JP5178545B2 - Device for preventing unnecessary operation of lightning arrester operation counter and lightning arrester operation counter - Google Patents

Description

  The present invention relates to an unnecessary operation prevention device and a lightning arrester operation counter for preventing unnecessary counting operation in a lightning arrester operation counter.

  In the Shinkansen substation, lightning arresters are installed at the power receiving points and feeders to protect the substation against lightning surges entering from the outside line. A lightning arrester is installed in the immediate vicinity of the primary and secondary terminals of the feeder transformer. This lightning arrester is configured to discharge at 90 KV, for example, when the working voltage in the electric line is 30 KV. In addition, a counter for measuring the number of operations of the lightning arrester is inserted into the grounding side wires of these lightning arresters so that the history of discharge due to lightning surges can be seen, so that signs of changes in the discharge characteristics can be captured. . It can also be used as reference data for investigating the cause of damage during a lightning strike. However, some counters of feeding arresters have an abnormally high number of operations, and there is a concern that the lightning arresters at those locations may deteriorate such as a decrease in discharge characteristics.

  However, since most of the timing of the count operation of the lightning arrester operation counter is when the switching switch is turned on, it is considered that it is operating with the switching surge at that time, and the actual number of operations of the lightning arrester due to the lightning surge is unknown. It is a situation. It can be said that this situation inherently has the possibility of overlooking the signs of lightning arrestor deterioration while causing a ground fault.

  Here, a circuit of a conventional lightning arrester operation counter (existing counter) is shown in FIG. The existing counter 13 is inserted between the lightning arrester 12 and the ground circuit GND, and a zinc oxide element (ZnO element, varistor) Rz, which is a non-linear resistance, a capacitor C, and an electromagnetic counter (counter) T are connected in parallel. ing. When the arrester 12 is discharged, the arrester discharge current Ia flows to the capacitor C, and the capacitor C is charged. When the capacitor C is charged and the voltage between the terminals of the capacitor C reaches, for example, 270V, the discharge current Ia flows to the varistor Rz, and the voltage of the capacitor C is maintained at about 270V. When the discharge of the lightning arrester 12 is completed, the electric charge charged in the capacitor C flows as a current to the driving coil of the counter T via the resistor R, and operates the counter T. This existing counter T performs a counting operation every time current flows, and displays the cumulative number of times the current has flowed using a mechanical display mechanism.

  As described above, the conventional product is an electromagnetic method in which the counter operation is performed by using the energy discharged from the electric charge charged in the capacitor C due to the voltage drop due to the discharge current. Therefore, even if the peak value of the discharge current Ia is low, it may be counted if the discharge time is long. For example, when a current of about 40 A to 50 A flows, the counter may operate. For this reason, an unnecessary counting operation may be performed due to an opening / closing surge of the switching switch, and a solution to this problem has been desired.

  In order to cope with the above problem, a lightning arrester operation counter capable of distinguishing the discharge current level has been developed (see Non-Patent Document 1). In order to solve the problem that the existing counter 13 is counted even when the peak value of the discharge current is low, the peak value of the surge current is measured using a CT (current transformer) for detecting the high-speed response. The current level is determined and counted. However, this lightning arrester operation counter requires an electronic circuit such as a detection CT output amplification circuit and a current value determination circuit, and an external power supply, which makes the configuration complicated and reliable because it uses the electronic circuit. There were concerns such as a decline.

Horie, Takagi et al., “Development of arrester operation counter capable of distinguishing discharge current level”, Transport and Electric Railway Study Group, TER-08-34, September 11, 2000

As described above, the conventional lightning arrester operation counter is an electromagnetic system in which the counter is operated using the energy discharged from the charge charged in the capacitor C by the discharge current from the lightning arrester. Therefore, there is a problem that even if the peak value of the discharge current is low, it is counted if the discharge time is long. For example, a surge operation of the switching switch sometimes performs a count operation that does not require a lightning arrester operation counter.
Further, in order to cope with the above problem, a lightning arrester operation counter capable of distinguishing the discharge current level has been developed, but this requires a fast response detection CT (current transformer), and the detection CT. An electronic circuit such as an output amplifier circuit and a current value determination circuit and an external power source are required, and there is a concern that the configuration becomes complicated and the reliability decreases.

  The present invention has been made in view of such circumstances, and a first object of the present invention is to provide a simple and reliable device without using an electronic circuit and an external power source by being attached to an existing lightning arrester operation counter. In addition to providing an unnecessary operation prevention device that can suppress unnecessary counting operation in an existing lightning arrester operation counter by a high method, it is also possible to detect (discriminate) the current level of the discharge current of the lightning arrester and perform a counting operation. An object is to provide an unnecessary operation prevention device.

  The second object of the present invention is to provide a lightning arrester operation counter capable of suppressing an unnecessary counting operation of the discharge current of the lightning arrester by a simple and reliable method without using an electronic circuit and an external power source, Another object of the present invention is to provide a lightning arrester operation counter capable of detecting (distinguishing) the current level of the discharge current of the lightning arrester and performing a counting operation.

  The present invention has been made to solve the above problems, and the unnecessary operation prevention device for a lightning arrester operation counter according to the present invention is inserted between a lightning arrester and a ground circuit that discharges the discharge current of the lightning arrester to the ground. And an unnecessary operation prevention device for a lightning arrester operation counter used by being attached to and used in a first electromagnetic counter that counts the number of times the discharge current flows using the discharge current as a driving power source, the lightning arrester and the grounding A resistor inserted between the circuit and a discharge tube inserted between the lightning arrester and the first electromagnetic counter.

  Further, the unnecessary operation preventing device for the lightning arrester operation counter according to the present invention is a series circuit of resistors composed of a first resistor and a second resistor inserted between the lightning arrester and the ground circuit, A series circuit of a discharge tube composed of a first discharge tube and a second discharge tube inserted between the lightning arrester and the first electromagnetic counter, the first resistor and the second A discharge current that is connected between the connection point of the resistor and the connection point of the first discharge tube and the second discharge tube and flows to the ground circuit through the first discharge tube and the second resistor is A second electromagnetic counter that counts the number of times the discharge current flows as a drive power supply, and setting the resistance value of the first resistor to be larger than the resistance value of the second resistor; The discharge start voltage of the second discharge tube is set larger than the discharge start voltage of the first discharge tube. Of either set or both configured to perform setting, and said.

  Further, the unnecessary operation preventing apparatus for the lightning arrester operation counter according to the present invention further includes a third electromagnetic counter between the second resistor and the ground circuit, and the third electromagnetic counter The discharge current flowing to the ground circuit through the second resistor is used as a drive power source, and the number of times the discharge current flows is counted.

  In addition, the unnecessary operation preventing device for the lightning arrester operation counter according to the present invention includes a series circuit of resistors composed of n (n ≧ 3) resistors inserted between the lightning arrester and the ground circuit, and the lightning arrester. And a first circuit of a discharge tube composed of n (n ≧ 3) discharge tubes, and N−1 (N = 2) of a series circuit of the resistors. , 3,..., N) connection point between the Nth resistor and the Nth resistor, and the N-1 (N = 2, 3,..., N) th discharge tube in the series circuit of the discharge tube. , And the connection point of the Nth discharge tube, each of which is connected to the connection point of the Nth discharge tube and counts the number of discharge currents flowing through the N-1th discharge tube to the Nth resistor. And the resistance values R1, R2,..., Rn of the n resistors are set as R1> R2> R3. ,...,> Rn, and setting the discharge start voltages VG1, VG2,..., VGn of the n discharge tubes to VG1 <VG2 <... <VGn. Or, it is configured to perform both settings.

  The lightning arrester operation counter of the present invention is inserted between the lightning arrester and a ground circuit that discharges the discharge current of the lightning arrester to the ground, and counts the number of times the discharge current flows using the discharge current as a driving power source. A lightning arrester operation counter having one electromagnetic counter, a resistor inserted between the lightning arrester and the ground circuit, and inserted between the lightning arrester and the first electromagnetic counter. And a discharge tube.

  The lightning arrester operation counter according to the present invention includes a series circuit of resistors composed of a first resistor and a second resistor inserted between the lightning arrester and the ground circuit, the lightning arrester and the first A series circuit of a discharge tube composed of a first discharge tube and a second discharge tube, and a connection point between the first resistor and the second resistor. And a discharge current flowing between the first discharge tube and the second discharge tube and flowing to the ground circuit through the first discharge tube and the second resistor as a driving power source, A second electromagnetic counter that counts the number of times the discharge current flows, a setting for making the resistance value of the first resistor larger than the resistance value of the second resistor, and the second One of the settings is set to make the discharge start voltage of the discharge tube larger than the discharge start voltage of the first discharge tube. Characterized in that, which is configured to perform both settings are.

  The lightning arrester operation counter according to the present invention further includes a third electromagnetic counter between the second resistor and the ground circuit. In the third electromagnetic counter, the second electromagnetic counter The discharge current flowing through the resistor to the ground circuit is used as a driving power source, and the number of times the discharge current flows is counted.

  The lightning arrester operation counter of the present invention includes a series circuit of resistors composed of n (n ≧ 3) resistors inserted between the lightning arrester and the ground circuit, the lightning arrester and the first A series circuit of discharge tubes composed of n (n ≧ 3) discharge tubes inserted between the electromagnetic counter and N−1 (N = 2, 3,... ., N) connection point between the Nth resistor and the Nth resistor, and the N-1 (N = 2, 3,..., N) th discharge tube and the Nth discharge of the series circuit of the discharge tube. N-1 electromagnetic counters, each of which is connected between the tube connection points and counts the number of discharge currents flowing through the N-1th discharge tube to the Nth resistor, respectively. The resistance values R1, R2,..., Rn of the n resistors are set to R1> R2> R3,. The configuration is such that either or both of the setting and the setting of setting the discharge start voltages VG1, VG2,..., VGn of the n discharge tubes to be VG1 <VG2 <. It is characterized by that.

  In the device for preventing unnecessary operation of the lightning arrester operation counter according to the present invention, it is possible to suppress unnecessary counting operation in the existing lightning arrester operation counter, and by a simple and reliable method without using an electronic circuit or an external power source. In addition, the count operation can be performed by detecting (distinguishing) the current level of the discharge current of the lightning arrester.

  In the lightning arrester operation counter according to the present invention, it is possible to suppress the unnecessary counting operation of the discharge current of the lightning arrester and to discharge the lightning arrester by a simple and reliable method without using an electronic circuit or an external power source. The count operation can be performed by detecting (discriminating) the current level of the current.

It is a figure which shows the structure of the unnecessary operation | movement prevention apparatus of the lightning arrester operation | movement counter which concerns on the 1st Embodiment of this invention. It is a figure which shows the structure of the lightning arrester operation | movement counter which concerns on the 2nd Embodiment of this invention. It is a figure which shows the structure of the unnecessary operation | movement prevention apparatus of the lightning arrester operation | movement counter which concerns on the 3rd Embodiment of this invention. It is a figure which shows the current pathway in case the discharge current Ia is I1 or less in the unnecessary operation prevention apparatus shown in FIG. It is a figure which shows the current pathway in case the discharge current Ia is I1-I2 in the unnecessary operation prevention apparatus shown in FIG. FIG. 4 is a diagram illustrating a current path when a discharge current Ia is equal to or greater than I2 in the unnecessary operation preventing apparatus illustrated in FIG. 3. It is a figure which shows the structure of the lightning arrester operation | movement counter which concerns on the 4th Embodiment of this invention. It is a figure which shows the structure of the unnecessary operation | movement prevention apparatus of the lightning arrester operation | movement counter which concerns on the 5th Embodiment of this invention. It is a figure which shows the structure of the lightning arrester operation | movement counter which concerns on the 6th Embodiment of this invention. It is a figure which shows the structure of the unnecessary operation | movement prevention apparatus of the lightning arrester operation | movement counter which concerns on the 7th Embodiment of this invention. It is a figure which shows the structure of the lightning arrester operation | movement counter which concerns on the 8th Embodiment of this invention. It is a figure which shows the structure of the conventional lightning arrester operation | movement counter.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
[First Embodiment]
FIG. 1 is a diagram showing a configuration of an unnecessary operation preventing apparatus for a lightning arrester operation counter according to the first embodiment of the present invention.
The unnecessary operation prevention device (also referred to simply as “unnecessary operation prevention device”) of the lightning arrester operation counter shown in FIG. 1 is used by being attached to the existing counter 13 shown in FIG. This is the most basic configuration of the apparatus.

  In FIG. 1, the lightning arrester 12 having one terminal connected to the electric line 11 has the other terminal (discharge-side terminal) connected to the terminal Na on the unnecessary operation prevention device 1 side. In the unnecessary operation preventing apparatus 1, a parallel circuit of a varistor Rz and a resistor R is connected between a terminal Na connected to the lightning arrester 12 and a terminal Nb connected to the ground circuit GND.

  Further, one terminal of the discharge tube G is connected to the terminal Na, and the other terminal of the discharge tube G is connected to the terminal In on the current input side of the existing counter 13 via the terminal Nc. The ground side terminal E of the existing counter 13 is grounded by the ground circuit GND. The varistor Rz is connected for the purpose of preventing dielectric breakdown of the resistor R in the event that the discharge tube G deteriorates and the discharge start voltage increases. This varistor Rz can be omitted.

  In the above configuration, when the lightning arrester 12 is discharged by a lightning strike or a switching switch switching surge, the discharge current Ia first flows through the resistor R. If the resistor current at this time is Ir, a voltage VR (Ir × R) is generated at both ends of the resistor R. When the voltage VR across the resistor R exceeds the discharge start voltage VG of the discharge tube G, the discharge tube G is discharged, the discharge current Ia flows to the existing counter 13 as the discharge tube current Ig, and the existing counter 13 counts. The existing counter 13 performs a counting operation every time a current flows, and displays the accumulated number of times the current flows by a mechanical display mechanism.

  For example, if the value of the resistor R is 2.5Ω and the discharge start voltage VG of the discharge tube G is 500 V, even if the lightning arrester 12 discharges, if the discharge current Ia is 200 A or less, VR becomes the discharge start voltage VG (500 V). Therefore, the lightning arrester 12 discharge current Ia all flows through the resistor R, and the existing counter 13 does not operate.

  When the discharge current Ia of the lightning arrester 12 exceeds 200 A, the voltage VR across the resistor R becomes equal to or higher than the discharge start voltage VG (500 V) of the discharge tube G, so that the discharge tube G is discharged and the existing counter 13 performs a counting operation. Therefore, the existing counter 13 does not operate at a current of 200 A or less, and operates only when a current of 200 A or more flows through the lightning arrester 12.

  This is based on actual measurement data in the field, and the current flowing to the lightning arrester due to the switching surge of the line switching switch is about 100 A at maximum, and the discharge current Ia is 200 A or more (for example, from several thousand A in the case of lightning strike). If the existing counter 13 is set to operate at tens of thousands of A), surges caused by lightning can be identified and counted.

  As described above, in the unnecessary operation preventing apparatus 1 for the lightning arrester operation counter according to the first embodiment of the present invention, by being attached to the existing counter 13, it is simple and reliable without using an electronic circuit and an external power source. By using a high method, unnecessary counting operations in the existing counter 13 can be suppressed, and discharges caused by lightning strikes can be identified and counted.

  The example of the unnecessary operation preventing apparatus 1 shown in FIG. 1 shows a configuration example in which one resistor R is used. However, in order to obtain a desired resistance value and capacity, the resistor R is a plurality of resistors. The serial circuit, the parallel circuit, or the series-parallel circuit can be configured. Moreover, although the example using one discharge tube G is shown, in order to obtain a desired discharge start voltage, a series circuit of a plurality of discharge tubes can be used.

  In the unnecessary operation preventing apparatus 1 of the first embodiment, the above-described first electromagnetic counter corresponds to the existing counter 13 (see FIG. 12), and the resistor corresponds to the resistor R. The discharge tube corresponds to the discharge tube G.

  The unnecessary operation preventing apparatus 1 according to the first embodiment uses the discharge current Ia of the lightning arrester 12 as a power source, and counts the number of times the discharge current Ia flows (the existing counter 13). ), A resistor inserted between the lightning arrester 12 and the ground circuit GND (resistor R), a lightning arrester 12 and a first electromagnetic counter (existing counter 13), And a discharge tube (discharge tube G) inserted between them.

  Thereby, in the unnecessary operation preventing apparatus according to the first embodiment, it is possible to suppress the unnecessary counting operation of the discharge current of the lightning arrester, and simple and reliable without using an electronic circuit or an external power source. The counting operation can be performed by detecting (distinguishing) the current level of the discharge current of the lightning arrester by a high method.

[Second Embodiment]
FIG. 2 is a diagram showing a configuration of a lightning arrester operation counter according to the second embodiment of the present invention. The lightning arrester operation counter 1A is configured as a lightning arrester operation counter 1A shown in FIG. 2 by integrating the unnecessary operation prevention device 1 and the existing counter 13 shown in FIG.

  That is, in the lightning arrester operation counter 1A shown in FIG. 2, an electromagnetic counter 14 (built-in counter) is provided between the discharge tube G and the terminal Nc instead of the existing counter 13, and the counter 14 is driven by the current flowing through the discharge tube G. Is configured to perform a counter operation. About another structure and operation | movement, it is the same as that of the unnecessary operation | movement prevention apparatus 1 shown in FIG. 1, The same code | symbol is attached | subjected to the same component and the overlapping description is abbreviate | omitted.

  The counter 14 is configured by an electromagnetic counter similar to the existing counter 13 shown in FIG. 12, and is an electromagnetic counter that is driven by using the discharge current Ia of the lightning arrester as a driving power source. As in the existing counter 13 shown in FIG. 2, a capacitor C, a varistor Rz, and a resistor R are provided. The counter 14 performs a count operation every time a current flows, and displays the cumulative number of times the current has flowed using a mechanical display mechanism.

  Also in the lightning arrester operation counter 1A of the second embodiment, as in the first embodiment shown in FIG. 1, the unnecessary counting of the discharge current Ia is suppressed, and an electronic circuit and an external power source are used. The count operation can be performed by detecting (distinguishing) the current level of the discharge current Ia of the lightning arrester by a simple and reliable method without any problem.

  In the unnecessary operation preventing apparatus 1 according to the second embodiment, the first electromagnetic counter described above corresponds to the counter 14, the resistor corresponds to the resistor R, and the discharge tube includes the discharge tube G. Equivalent to.

  The lightning arrester operation counter 1A of the second embodiment is inserted between the lightning arrester 2 and the ground circuit GND, and counts the number of times the discharge current Ia flows using the discharge current Ia of the lightning arrester 12 as a driving power source. A lightning arrester operation counter having a first electromagnetic counter (counter 14), a resistor (resistor R) inserted between the lightning arrester 12 and the ground circuit GND, a lightning arrester 12 and a first electromagnetic type A discharge tube (discharge tube G) inserted between the counter (counter 14).

  Thereby, in the lightning arrester operation counter 1A of the second embodiment, an unnecessary counting operation of the discharge current of the lightning arrester can be suppressed, and simple and highly reliable without using an electronic circuit or an external power source. By the method, the count operation can be performed by detecting (discriminating) the current level of the discharge current of the lightning arrester.

[Third Embodiment]
FIG. 3 is a diagram showing the configuration of the unnecessary operation preventing apparatus according to the third embodiment of the present invention. In the first and second embodiments, the example in which the count operation is performed only when the discharge current Ia exceeds one detection level (identification level) has been described. In the third embodiment of the present invention, an example in which there are two detection levels (identification levels) of the discharge current Ia, that is, a configuration example of the unnecessary operation preventing apparatus with a small current counter will be described.

  This can be considered that when the lightning arrester 12 is deteriorated, the discharge current of the lightning arrester 12 due to switching surge increases. In order to catch this sign, the apparatus shown in FIG. 3 is configured to have a counter 15 (built-in counter) built in the unnecessary operation preventing apparatus 2 and to operate within a certain range.

  The counter 15 is a counter having the same configuration as the existing counter 13 as shown in FIG. 12, and is an electromagnetic counter that operates using the discharge current from the lightning arrester 12 as a drive power source. The counter 15 is configured with a capacitor C, a varistor Rz, and a resistor R shown in FIG. 12 as necessary. The counter 15 performs a count operation each time a current flows, and displays the cumulative number of times the current has flowed using a mechanical display mechanism.

  In the unnecessary operation preventing apparatus 2 shown in FIG. 3, a series circuit of a resistor R1 and a resistor R2 is inserted between a terminal Na to which the lightning arrester 12 is connected and a terminal Nb on the ground side. A series circuit of the discharge tube G1 and the discharge tube G2 is inserted between the terminal Na and the connection terminal Nc to the existing counter 13. A counter 15 is connected between a connection point between the resistor R1 and the second resistor R2 and a connection point between the discharge tube G1 and the discharge tube G2.

  The varistors Rz1 and Rz2 are connected for the purpose of preventing dielectric breakdown of the resistors R1 and R2 when the discharge tubes G1 and G2 are deteriorated and the discharge start voltage is increased. The varistors Rz1 and Rz2 can be omitted.

  In the unnecessary operation preventing apparatus 2, the discharge tube G1 starts discharging when the current level of the discharge current Ia is equal to or higher than I1 (I1 <I2), and the discharge tube G2 has the current level of the discharge current Ia of I2 ( The discharge is started when I1 <I2) or more. In other words, the existing counter 13 counts a large current (discharge current of I2 or more), and the counter 15 counts a small current (discharge current in the range of I1 to I2).

  For this reason, the resistance value of the resistor R1 and the resistance value of the resistor R2 are set so that “R1> R2”, or when the resistance values are the same, the discharge start voltage VG1 of the discharge tube G1. Then, the discharge start voltage VG2 of the discharge tube G2 is set to be “VG1 <VG2”. Alternatively, “R1> R2” and “VG1 <VG2” are set.

  In the unnecessary operation prevention device 2 shown in FIG. 3, when the lightning arrester 12 is discharged, the discharge current Ia first flows into the ground circuit GND as the resistor current Ir1 of the resistor R1 and the resistor current Ir2 of the resistor R2, and the resistance A voltage VR1 is generated in the resistor R1, and a voltage VR2 is generated in the resistor R2. Here, when the current level of the resistor current Ir1 (discharge current Ia) is in the range of I1 to I2, the voltage VR1 of the resistor R1 becomes equal to or higher than the discharge start voltage VG1 of the discharge tube G1, and the discharge tube G1 is discharged. To start. For this reason, the discharge current Ia is commutated from the resistor current Ir1 to the discharge tube current Ig1 of the discharge tube G1.

  On the other hand, the voltage VR2 of the resistor R2 is equal to or lower than the discharge start voltage VG2 of the discharge tube G2, and the discharge tube G2 does not start discharging. For this reason, the discharge current Ia flows as the resistor current Ir2 of the resistor R2.

  Thus, when the current level of the discharge current Ia is in the range “I1 <discharge current Ia <I2” in the range of I1 to I2, the discharge current Ia passes through the discharge tube G1, the counter 15, and the resistor R2 to the ground circuit GND. The counter 15 performs a counting operation.

  When the current level of the discharge current Ia is equal to or higher than I2 and “I2 <discharge current Ia”, the voltage VR1 of the resistor R1 becomes equal to or higher than the discharge start voltage VG1 of the discharge tube G1, and the discharge tube G1 starts discharging. Also, the voltage VR2 of the resistor R2 becomes equal to or higher than the discharge start voltage VG2 of the discharge tube G2, and the discharge tube G2 also starts discharging. For this reason, the discharge current Ia flows to the existing counter 13 through a path of the discharge tube current Ig1 of the discharge tube G1 and the discharge tube current Ig2 of the discharge tube G2.

  Thus, when the discharge current Ia has a current level of I2 or more, the discharge current Ia flows to the ground circuit GND through the discharge tube G1, the discharge tube G2, and the existing counter 13, and the existing counter 13 performs a counting operation.

  Therefore, the counter 15 and the existing counter 13 do not operate when the current level of the discharge current Ia is equal to or less than I1, the counter 15 operates when Ia is in the range of I1 to I2, and the existing counter when Ia is equal to or greater than I2. 13 operates.

  For example, if the resistor R1 is 3Ω, the resistor R2 is 2.5Ω, the discharge start voltage VG1 of the discharge tube G1 is 300, and the discharge start voltage VG2 of the discharge tube G2 is 500V, I1 is 100A, I2 is 200A, The counter 15 operates in the range of 100 to 200A, and the existing counter 13 operates at 200A or more.

The above-described current paths for each current range of the discharge current Ia are shown in FIGS.
FIG. 4 is an example when the current level of the discharge current Ia of the lightning arrester 12 is I1 or less. In this case, the discharge current Ia of the lightning arrester flows to the ground circuit GND as the resistor current Ir1 and the resistor current Ir2 through the resistor R1 and the resistor R2 through the path indicated by the bold line portion in FIG.

  That is, when the current level of the discharge current Ia is I1 or less, the voltage VR1 across the resistor R1 does not exceed the discharge start voltage VG1 of the discharge tube G1, and the voltage VR2 across the resistor R2 is also the discharge tube. The discharge start voltage VG2 of G2 is not exceeded. Therefore, the discharge tubes G1 and G2 do not start discharging, and the discharge current Ia flows only through the resistors R1 and R2, and does not flow through the discharge tubes G1 and G2 and the counters 15 and 13.

  Therefore, when “discharge current Ia <I1”, the counter 15 and the counter 13 are not counted.

  FIG. 5 shows an example in which the current level of the discharge current Ia of the lightning arrester 12 is in the range “I1 <discharge current Ia <I2” in the range of I1 to I2. In this case, the discharge current Ia of the lightning arrester initially flows through the resistor R1 and the resistor R2 as the resistor current Ir1 and the resistor current Ir2 to the ground circuit GND, but “discharge current Ia> I1”. Therefore, the voltage VR1 of the resistor R1 becomes larger than the discharge start voltage VG1, and the discharge tube G1 starts discharging. When the discharge tube G1 starts discharging, the current Ir1 (discharge current Ia) flowing through the resistor R1 is commutated as the discharge tube current Ig1 (discharge current Ia) on the discharge tube G1 side.

  On the other hand, since “discharge current Ia <I2”, the voltage VR2 of the resistor R2 is smaller than the discharge start voltage VG2, so the discharge tube G2 does not start discharging.

  Accordingly, the discharge current Ia flows to the ground circuit GND through the path of the discharge tube G1, the counter 15, and the resistor R2 and is counted by the electromagnetic counter 15 as shown by the bold line portion in FIG. The counting operation by the counter 13 is not performed.

  Thus, when “I1 <discharge current Ia <I2”, only the counter 15 can perform the counting operation.

  FIG. 6 shows an example in which the current level of the discharge current Ia of the lightning arrester 12 is I2 or more and “I2 <discharge current Ia”. In this case, the discharge current Ia of the lightning arrester initially flows as the resistor current Ir1 and the resistor current Ir2 through the resistor R1 and the resistor R2, but the current level of the discharge current Ia is I1. As described above, since “I1 <discharge current Ia”, the voltage VR1 of the resistor R1 becomes higher than the discharge start voltage VG1, and the discharge tube G1 starts discharging.

  Similarly, since the current level of the discharge current Ia is equal to or greater than I2 and “I2 <discharge current Ia”, the voltage VR2 across the resistor R2 becomes higher than the discharge start voltage VG2, and the discharge tube G2 also starts discharging. For this reason, the discharge current Ia flows to the existing counter 13 through a path of the discharge tube current Ig1 of the discharge tube G1 and the discharge tube current Ig2 of the discharge tube G2.

  Accordingly, the discharge current Ia flows to the ground circuit GND through the discharge tube G1, the discharge tube G2, and the existing counter 13 as shown by the thick line portion in FIG. 6, and only the counting operation by the existing counter 13 is performed. No counting operation is performed.

  As described above, in the unnecessary operation preventing apparatus 2 according to the third embodiment, when “discharge current Ia <I1”, the count operation of the discharge current Ia is not performed and “I1 <discharge current Ia <I2” is not performed. ", The counter 15 counts the discharge current Ia. If" I2 <discharge current ", the counter 13 counts the discharge current Ia. In other words, the counter can be selected to perform the counting operation according to the current level of the discharge current Ia.

  As described above, the counter of the method for identifying the discharge current of the lightning arrester at a plurality of current levels has already been disclosed in Reference 1, but the counter shown in Reference 1 requires an electronic circuit and a control power supply. On the other hand, since the unnecessary operation preventing apparatus 2 of the present embodiment does not require an electronic circuit or a control power supply, it can be installed simply and with high reliability.

  Further, the counter disclosed in Document 1 is composed of an electronic circuit, and there is a concern about the reliability against a large current discharge of a lightning surge. However, the unnecessary operation prevention device 2 of the present embodiment includes a resistor R, a discharge tube Since it is composed of G1 and G2 and an electromagnetic counter (counter 15 and existing counter 13), it has a feature of high reliability against large current discharge.

  In the unnecessary operation preventing apparatus 2 according to the third embodiment, the above-described first electromagnetic counter corresponds to the existing counter 13, and the above-described first resistor corresponds to the resistor R1, The second resistor corresponds to the resistor R2. The first discharge tube corresponds to the discharge tube G1, the second discharge tube corresponds to the discharge tube G2, and the second electromagnetic counter corresponds to the counter 15.

  In the unnecessary operation preventing apparatus 2 according to the third embodiment, the first resistor (resistor R1) and the second resistor (resistor) inserted between the lightning arrester 12 and the ground circuit GND. A first discharge tube (discharge tube G1) and a second discharge inserted between a series circuit of resistors composed of a resistor R2) and a lightning arrester 12 and a first electromagnetic counter (existing counter 13). A series circuit of a discharge tube comprising a tube (discharge tube G2), a connection point between the first resistor (resistor R1) and the second resistor (resistor R2), and a first discharge tube (discharge tube) G1) and a discharge point connected to the connection point of the second discharge tube (discharge tube G2) and flowing to the ground circuit GND through the first discharge tube (discharge tube G1) and the second resistor (resistor R2). And a second electromagnetic counter (counter 15) that counts the number of times of the current Ia. Also, a setting for making the resistance value of the first resistor (resistor R1) larger than the resistance value of the second resistor (resistor R2), and the discharge start voltage of the second discharge tube (discharge tube G2) One or both of the settings of setting (VG2) to be larger than the discharge start voltage (VG1) of the first discharge tube (discharge tube G1) are configured.

  Thereby, in the unnecessary operation prevention device 2 of the lightning arrester operation counter according to the third embodiment, unnecessary counting operation of the discharge current of the lightning arrester can be suppressed, and it is simple without using an electronic circuit or an external power supply. In addition, the current level of the lightning arrester discharge current can be detected (discriminated) in three ranges by a highly reliable method, and the count operation can be performed in the range of the two current levels.

[Fourth Embodiment]
FIG. 7 is a diagram showing a configuration of a lightning arrester operation counter according to the fourth embodiment of the present invention.

  A lightning arrester operation counter 2A shown in FIG. 7 is configured by integrating the unnecessary operation prevention device 2 shown in FIG. 3 and the existing counter 13 as a lightning arrester operation counter 2A shown in FIG.

  As described above, the lightning arrester operation counter 2A shown in FIG. 7 is provided with the electromagnetic counter 14 between the discharge tube G2 and the terminal Nc, and causes the counter 14 to perform the counter operation by the current flowing through the discharge tube G2. Other configurations and operations are the same as those of the unnecessary operation preventing apparatus 3 according to the third embodiment shown in FIG. 3, and the same components are denoted by the same reference numerals, and redundant description is omitted. .

  In this lightning arrester operation counter 2A, the current level of the lightning arrester discharge current is detected (discriminated) in three ranges by a simple and reliable method without using an electronic circuit and an external power source, and two currents are detected. The count operation can be performed in the level range (large current and small current range).

  In the lightning arrester operation counter 2A of the fourth embodiment, the first electromagnetic counter described above corresponds to the counter 14, the first resistor corresponds to the resistor R1, and the second resistance. The resistor corresponds to the resistor R2. The first discharge tube corresponds to the discharge tube G1, the second discharge tube corresponds to the discharge tube G2, and the second electromagnetic counter corresponds to the counter 15.

  Then, a series circuit of resistors composed of a first resistor (resistor R1) and a second resistor (resistor R2) inserted between the lightning arrester 12 and the ground circuit GND, A series circuit of a discharge tube composed of a first discharge tube (discharge tube G1) and a second discharge tube (discharge tube G2) inserted between the first electromagnetic counter (counter 14); Connection point between the first resistor (resistor R1) and the second resistor (resistor R2), and connection point between the first discharge tube (discharge tube G1) and the second discharge tube (discharge tube G2). And a second electromagnetic counter (counter) that counts the number of discharge currents flowing through the first discharge tube (discharge tube G1) and the second resistor (resistor R2) to the ground circuit GND. 15). Also, a setting for making the resistance value of the first resistor (resistor R1) larger than the resistance value of the second resistor (resistor R2), and the discharge start voltage of the first discharge tube (discharge tube G1) One or both of the settings of setting (VG2) to be larger than the discharge start voltage (VG1) of the second discharge tube (discharge tube G2) are configured.

  Thereby, in the lightning arrester operation counter 2A of the fourth embodiment, an unnecessary counting operation of the discharge current of the lightning arrester can be suppressed, and simple and highly reliable without using an electronic circuit or an external power source. By the method, the current level of the discharge current of the lightning arrester can be detected (discriminated) in three ranges, and the count operation can be performed in the range of the two current levels.

[Fifth Embodiment]
FIG. 8 is a diagram showing the configuration of the unnecessary operation preventing apparatus according to the fifth embodiment of the present invention.
The unnecessary operation preventing apparatus 3 shown in FIG. 8 is that an electromagnetic counter 16 (built-in counter) is newly added to the unnecessary operation preventing apparatus 2 of the third embodiment shown in FIG. Is the same as the unnecessary operation preventing apparatus 2 shown in FIG.

  That is, the function of counting the discharge current Ia when the discharge current Ia is equal to or less than I1 and “I1 <discharge current Ia <I2” when the discharge current Ia is in the range of I1 to I2. Is added. Other configurations are the same as those of the unnecessary operation preventing apparatus 2 shown in FIG. For this reason, the same code | symbol is attached | subjected to the same component and the overlapping description is abbreviate | omitted.

  Thus, in the unnecessary operation preventing apparatus 3 of the fifth embodiment, when “discharge current Ia <I1” and “I1 <discharge current Ia <I2”, the counter 16 counts the discharge current Ia. If “I1 <discharge current Ia <I2”, the counter 15 counts the discharge current Ia. If “I2 <discharge current”, the existing counter 13 counts the discharge current Ia. Let it be done.

  That is, the three current levels can be identified, and the counter 16, the counter 15, and the existing counter 13 can be selected and counted. That is, the number of times that the discharge current Ia has flowed from the lightning arrester 12 can be counted, and the number of times that the discharge current Ia has flowed can be counted by identifying the current level.

  As described above, the unnecessary operation prevention device 3 shown in FIG. 8 is attached to the existing counter 13, so that unnecessary counting in the existing counter 13 can be performed by a simple and reliable method without using an electronic circuit and an external power source. Operation can be suppressed. Further, the current level of the discharge current Ia can be detected (discriminated), and the number of times the discharge current Ia flows can be counted.

  In the unnecessary operation preventing apparatus 3 for the lightning arrester operation counter according to the fifth embodiment, the aforementioned first electromagnetic counter corresponds to the existing counter 13 and the aforementioned second electromagnetic counter corresponds to the counter 15. The third electromagnetic counter described above corresponds to the counter 16.

  In the unnecessary operation preventing apparatus 3 according to the fifth embodiment, the second resistor (resistor R2) and the ground circuit are compared with the unnecessary operation preventing apparatus 2 according to the third embodiment shown in FIG. A third electromagnetic counter (counter 16) is further provided between the ground and GND, and the number of discharge currents flowing through the second resistor (resistor R2) to the ground circuit GND is counted. .

  As a result, the number of times the discharge current Ia has flowed from the lightning arrester 12 can be counted, and the number of times the discharge current Ia has flowed can be counted by detecting (distinguishing) the current level.

[Sixth Embodiment]
FIG. 9 is a diagram showing a configuration of a lightning arrester operation counter according to the sixth embodiment of the present invention.

  A lightning arrester operation counter 3A shown in FIG. 9 is formed by integrating the unnecessary operation prevention device 3 shown in FIG. 8 and the existing counter 13 as a lightning arrester operation counter 3A shown in FIG.

  As described above, the lightning arrester operation counter 3A shown in FIG. 9 is provided with the electromagnetic counter 14 between the discharge tube G2 and the terminal Nc, and causes the counter 14 to perform a counter operation by the current flowing through the discharge tube G2. Other configurations and operations are the same as those of the unnecessary operation preventing apparatus 3 according to the fifth embodiment shown in FIG. 8, and the same components are denoted by the same reference numerals and redundant description is omitted. .

  In this lightning arrester operation counter 3A, the three current levels are identified by a simple and reliable method without using an electronic circuit and an external power source, and the counter 16, the counter 15, and the counter 14 are selected and counted. be able to. That is, the number of times that the discharge current Ia has flowed from the lightning arrester 12 can be counted, and the number of times that the discharge current Ia has flowed can be counted by identifying the current level.

  In the lightning arrester operation counter 3A of the sixth embodiment, the above-described first electromagnetic counter corresponds to the counter 14, and the above-described second electromagnetic counter corresponds to the counter 15. The third electromagnetic counter corresponds to the counter 16.

  In the lightning arrester operation counter 3A of the sixth embodiment, the second resistor (resistor R2), the ground side, and the unnecessary operation prevention device 2 of the fourth embodiment shown in FIG. In addition, a third electromagnetic counter (counter 16) is provided to count the number of discharge currents flowing through the second resistor (resistor R2) to the ground circuit GND.

  As a result, the number of times the discharge current Ia has flowed from the lightning arrester 12 can be counted, and the number of times the discharge current Ia has flowed can be counted by detecting (distinguishing) the current level.

[Seventh Embodiment]
In the unnecessary operation preventing apparatus 2 of the third embodiment shown in FIG. 3, the example in which the detection level of the discharge current Ia is detected in two stages of I1 and I2 is shown. The detection is not limited, and the detection can be further divided into n (n ≧ 3) stages.

  FIG. 10 is a diagram showing the configuration of the unnecessary operation preventing apparatus according to the seventh embodiment of the present invention. In the unnecessary operation preventing apparatus 4 shown in FIG. 10, a series circuit of resistors R1, R2,..., Rn is inserted between the connection terminal Na to the lightning arrester 12 and the terminal Nb on the ground side.

  Further, a series circuit of the discharge tubes G1, G2,..., Gn is inserted between the connection terminal Na to the lightning arrester 12 and the connection terminal Nc to the existing counter 13.

  A counter 15-1 is inserted between the connection point of the discharge tubes G1 and G2 and the connection point of the resistors R1 and R2, and the connection point of the discharge tubes G2 and G3 and the connection point of the resistors R2 and R3. Counter 15-2 is inserted between Hereinafter, similarly, the counter 15-n-1 is connected between the connection point of the discharge tubes Gn-1, Gn and the connection point of the resistors Rn-1, Rn.

  Then, the resistance values of the resistors R1, R2, R3,... Rn are set such that “R1> R2> R3>...> Rn” or the discharge tubes G1, G2, G3,... Gn-1, Gn discharge start voltages VG1, VG2, VG3,..., VGn-1, VGn are set to satisfy "VG1 <VG2 <VG3 <... <VGn". The Alternatively, both the setting for the resistor and the setting for the discharge start voltage are performed.

  With the above configuration, when the current level of the discharge current Ia is equal to or lower than I1 and “discharge current Ia <I1” according to the current level of the discharge current Ia “I1 <I2 <I3. The discharge tubes G1, G2, G3,..., Gn-1, Gn do not discharge, and a current flows to the ground circuit GND through the resistors R1, R2,. In this case, the discharge current Ia does not flow through the counters 15-1, 15-2,..., 15-n-1 and the existing counter 13, and the counting operation is not performed.

  When the current level of the discharge current Ia is “I1 <discharge current Ia <I2”, only the discharge tube G1 starts discharging, and the discharge current Ia includes the discharge tube G1, the counter 15-1, and the resistor R2. , R3,..., Rn and the terminal Nb flow to the ground circuit GND. In this case, only the counter 15-1 performs the counting operation.

  When the current level of the discharge current Ia is “I2 <discharge current Ia <I3”, the discharge tubes G1 and G2 start discharging, and the discharge current Ia includes the discharge tubes G1 and G2, the counter 15-2, It flows to the ground circuit GND through the resistors R3,..., Rn and the terminal Nb. In this case, only the counter 15-2 performs the counting operation.

  Similarly, when the current level of the discharge current Ia is “In-1 <discharge current Ia <discharge current In”, the discharge tubes G1, G2, G3,..., Gn-1 start discharging. The discharge current Ia flows to the ground circuit through the discharge tubes G1, G2, G3,..., Gn-1, the counter 15-n-1, and the terminal Nb. In this case, only the counter 15-n-1 performs the counting operation.

  When the current level of the discharge current Ia is “In <discharge current Ia”, all of the discharge tubes G1, G2, G3,..., Gn−1, Gn start discharging, and the discharge current Ia Flows through the discharge tubes G1, G2, G3,..., Gn-1, Gn, the terminal Nc, and the existing counter 13 to the ground circuit GND. In this case, only the existing counter 13 performs a counting operation.

  Thus, n resistors R1, R2, R3,..., Rn, n discharge tubes G1, G2, G3,..., Gn-1, Gn and n counters 15- 1, 15-2, 15-3,..., 15-n-1 and the existing counter 13 can be used to detect (discriminate) and count the discharge current Ia in n stages. .

  In the unnecessary operation preventing apparatus 4 of the seventh embodiment, the n resistors (n ≧ 3) correspond to the resistors R1, R2,..., Rn, and n resistors (n ≧ 3). ) Corresponds to the discharge tubes G1, G2, G3,..., Gn, and the aforementioned N-1 electromagnetic counters are counters 15-1, 15-2,. -N-1 corresponds.

  A series circuit of resistors composed of n (n ≧ 3) resistors (resistors R1, R2, R3,..., Rn) inserted between the lightning arrester 12 and the ground circuit GND, It is composed of n (n ≧ 3) discharge tubes (discharge tubes G1, G2, G3,..., Gn) inserted between the lightning arrester 12 and the first electromagnetic counter (existing counter 13). N-1 (N = 2, 3,..., N) -th resistor and N series of a series circuit of discharge tubes and a series circuit of resistors (resistors R1, R2, R3,..., Rn) N-1 (N = 2, 3,..., N) th in the series circuit of the connection point of the th resistor and the discharge tube (discharge tubes G1, G2, G3,..., Gn-1, Gn). The number of discharge currents that are connected between the discharge tube and the connection point of the Nth discharge tube and flow through the N−1th discharge tube to the Nth resistor. , And N−1 electromagnetic counters (counters 15-1, 15-2,..., 15-n−1) for counting. Further, the resistance values R1, R2,..., Rn of the n resistors are set to R1> R2> R3,...> Rn, and the discharge start voltage VG1 of the n discharge tubes is set. , VG2,..., VGn are configured to perform one or both of the settings of setting VG1 <VG2 <.

  Thereby, in the unnecessary operation preventing apparatus 4 of the seventh embodiment, unnecessary counting operation of the discharge current of the lightning arrester can be suppressed, and simple and reliable without using an electronic circuit or an external power source. By this method, the current level of the discharge current of the lightning arrester can be distinguished and counted in n stages.

[Eighth Embodiment]
FIG. 11 is a diagram showing a configuration of a lightning arrester operation counter according to the fifth embodiment of the present invention.

  A lightning arrester operation counter 4A shown in FIG. 11 is configured by integrating the unnecessary operation prevention device 4 shown in FIG. 10 and the existing counter 13 as a lightning arrester operation counter 4A shown in FIG.

  In the lightning arrester operation counter 4A shown in FIG. 11, an electromagnetic counter 14 is provided between the discharge tube Gn and the terminal Nc, and the counter 14 is caused to perform a counter operation by a current flowing through the discharge tube Gn. Other configurations and operations are the same as those of the unnecessary operation preventing apparatus 4 of the seventh embodiment shown in FIG. 10, and the same components are denoted by the same reference numerals, and redundant description is omitted. .

  In this lightning arrester operation counter 4A, n resistors R1, R2, R3,..., Rn, n discharge tubes G1, G2, G3,. By using the counters 15-1, 15-2, 15-3,..., 15-n-1 and the counter 14, the discharge current Ia can be counted in n stages.

  As described above, the embodiments of the present invention have been described. The count operation can be performed by detecting (distinguishing) the current level of the discharge current of the lightning arrester by a simple and reliable method without using an electronic circuit or an external power source.

  In the lightning arrester operation counter of the present invention, unnecessary counting operation due to a discharge current other than the lightning arrester discharge current due to lightning can be suppressed, and a simple and reliable method without using an electronic circuit or an external power source Thus, the count operation can be performed by detecting (distinguishing) the current level of the discharge current of the lightning arrester.

  Although the embodiment of the present invention has been described above, the lightning arrester operation counter unnecessary operation prevention device and the lightning arrester operation counter of the present invention are not limited to the above illustrated examples, and depart from the gist of the present invention. Of course, various modifications can be made within the range not to be performed.

1, 2, 3, 4 ... Arrestor operation counter unnecessary operation prevention device, 1A, 2A, 3A, 4A ... Arrester operation counter, 11 ... Electric line, 12 ... Arrester, 13 ... Existing counter, 14, 15, 15-1, 15-2, 15-n-1, 15-n, 16 ... electromagnetic counter, Ia ... discharge current, G, G1, G2, G3, Gn -1, Gn ... discharge tube, R1, R2, R3, Rn-1, Rn ... resistor, VG1, VG2, VG3, VGn-1, VGn ... discharge start voltage, VR, VR1, VR2 , VRn−1, VRn... Voltage across the resistor

Claims (6)

A first electromagnetic counter that is inserted between a lightning arrester and a ground circuit that discharges the discharge current of the lightning arrester to the ground and that counts the number of times the discharge current flows using the discharge current as a driving power supply; A device for preventing unnecessary operation of the arrester operation counter used,
A series circuit of resistors composed of a first resistor and a second resistor, inserted between the lightning arrester and the ground circuit;
A series circuit of a discharge tube composed of a first discharge tube and a second discharge tube inserted between the lightning arrester and the first electromagnetic counter;
The first discharge tube and the second resistor are connected between a connection point of the first resistor and the second resistor, and a connection point of the first discharge tube and the second discharge tube. A second electromagnetic counter that counts the number of times the discharge current flows, using the discharge current flowing through the resistor as a drive power supply,
With
Setting the resistance value of the first resistor to be greater than the resistance value of the second resistor, and setting the discharge start voltage of the second discharge tube to be greater than the discharge start voltage of the first discharge tube Configured to configure one or both of the settings,
A device for preventing unnecessary operation. A third electromagnetic counter is further provided between the second resistor and the ground circuit, and in the third electromagnetic counter, a discharge current flowing to the ground circuit through the second resistor is generated. It was configured to count the number of times the discharge current flowed as a drive power supply,
The unnecessary operation preventing apparatus according to claim 1 . A first electromagnetic counter that is inserted between a lightning arrester and a ground circuit that discharges the discharge current of the lightning arrester to the ground and that counts the number of times the discharge current flows using the discharge current as a driving power supply; A device for preventing unnecessary operation of the arrester operation counter used,
A series circuit of resistors composed of n (n ≧ 3) resistors inserted between the lightning arrester and the ground circuit;
A series circuit of discharge tubes composed of n (n ≧ 3) discharge tubes inserted between the lightning arrester and the first electromagnetic counter;
The connection point of the N-1 (N = 2, 3,..., N) th resistor and the Nth resistor in the series circuit of the resistors, and N-1 (N = , N) discharge connected to the connection point of the Nth discharge tube and the Nth discharge tube, and flowing through the N-1th discharge tube to the Nth resistor. N-1 electromagnetic counters each counting the number of currents;
With
The resistance values R1, R2,..., Rn of the n resistors are set to R1>R2>R3,...> Rn, and the discharge start voltage VG1, n of the n discharge tubes is set. VG2,..., VGn are configured to perform one or both of the settings of setting VG1 <VG2 <.
A device for preventing unnecessary operation. Operation of a lightning arrester having a first electromagnetic counter that is inserted between a lightning arrester and a ground circuit that discharges the discharge current of the lightning arrester to the ground and counts the number of times the discharge current flows using the discharge current as a driving power source A counter,
A series circuit of resistors composed of a first resistor and a second resistor, inserted between the lightning arrester and the ground circuit;
A series circuit of a discharge tube composed of a first discharge tube and a second discharge tube inserted between the lightning arrester and the first electromagnetic counter;
The first discharge tube and the second resistor are connected between a connection point of the first resistor and the second resistor, and a connection point of the first discharge tube and the second discharge tube. A second electromagnetic counter that counts the number of times the discharge current flows, using the discharge current flowing through the resistor as a drive power supply,
With
Setting that the resistance value of the first resistor is larger than the resistance value of the second resistor, and setting that the discharge start voltage of the second discharge tube is larger than the discharge start voltage of the first discharge tube Configured to have one or both of these settings,
Features a lightning arrester operation counter. A third electromagnetic counter is further provided between the second resistor and the ground circuit, and in the third electromagnetic counter, a discharge current flowing to the ground circuit through the second resistor is generated. The drive power supply is configured to count the number of times the discharge current flows,
The lightning arrester operation | movement counter of Claim 4 characterized by these. Operation of a lightning arrester having a first electromagnetic counter that is inserted between a lightning arrester and a ground circuit that discharges the discharge current of the lightning arrester to the ground and counts the number of times the discharge current flows using the discharge current as a driving power source A counter,
A series circuit of resistors composed of n (n ≧ 3) resistors inserted between the lightning arrester and the ground circuit;
A series circuit of discharge tubes composed of n (n ≧ 3) discharge tubes inserted between the lightning arrester and the first electromagnetic counter;
The connection point of the N-1 (N = 2, 3,..., N) th resistor and the Nth resistor in the series circuit of the resistors, and N-1 (N = , N) discharge currents connected to the connection points of the Nth discharge tube and the Nth discharge tube, respectively, and flow into the Nth resistor through the N-1th discharge tube. N-1 electromagnetic counters each counting the number of times,
With
The resistance values R1, R2,..., Rn of the n resistors are set to R1>R2>R3,...> Rn, and the discharge start voltage VG1, n of the n discharge tubes is set. VG2,..., VGn are configured to perform one or both of the settings of setting VG1 <VG2 <.
Features a lightning arrester operation counter.

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