JP6971909B2 - Generator control device, power generation system, and generator control method - Google Patents

Description

The present invention relates to a generator control device, a power generation system, and a generator control method.

Patent Document 1 discloses a generator control device that controls a generator that supplies power to a load instead of a commercial power source in the event of a power failure. When this generator controller receives breaking news indicating that a disaster has occurred, it activates the generator regardless of the extent of the disaster and whether or not there is a power outage in the commercial power supply. Take control. If no power failure occurs within a predetermined period of time after the generator is started, the generator is stopped.

Japanese Unexamined Patent Publication No. 2009-95073

In order to keep the generator ready for immediate start-up, it is recommended to perform regular maintenance operation as a test run of the generator even during the period when no disaster occurs. However, the above-mentioned activation control according to Patent Document 1 is performed independently of the periodic maintenance operation. Therefore, a situation may occur in which periodic maintenance operation is performed immediately before or immediately after the start of the generator due to the occurrence of a minor disaster that does not lead to a power failure.

In this case, the operation of the generator by the above-mentioned start control has the same meaning as the maintenance operation, so that the maintenance operation is performed with an excessive frequency. Excessive performance of maintenance operations is not preferable as it results in wasted fuel stockpile of the generator.

On the other hand, in the generator control device according to Patent Document 1, if the generator is not started periodically, a situation may occur in which the generator is hardly started when a disaster rarely occurs. If the interval between the maintenance operation of the generator and the next maintenance operation is too wide, there is a concern that the generator cannot be started immediately in the event of a power failure.

An object of the present invention is a generator control device, a power generation system, and power generation, in which the interval between the maintenance operation of a generator and the next maintenance operation is prevented from being too wide, and the execution of the maintenance operation at an excessive frequency is suppressed. It is to provide a machine control method.

In order to achieve the above object, the generator control device according to the present invention is
When a power failure occurs in the commercial power source, a generator that supplies power to the load on behalf of the commercial power source and performs maintenance operation, which is an operation for maintenance, is controlled during the period when the commercial power source is sound. It ’s a generator control device.
Elapsed period length information indicating the elapsed period length from the maintenance operation previously executed by the generator, whether or not a disaster that may cause a power outage has occurred, and the disaster if the disaster occurs. It is necessary to acquire the power failure probability information representing the occurrence probability of the power failure due to the above, and to make the generator perform the maintenance operation by the combination of the acquired elapsed period length information and the power failure probability information. A determination means for determining whether or not a predetermined maintenance operation start condition is satisfied as an expression, and a determination means for determining whether or not the condition is satisfied.
When the determination means determines that the combination satisfies the maintenance operation start condition, a control command for executing the maintenance operation is output to the generator, and the determination means causes the combination to start the maintenance operation. If it is determined that the conditions are not satisfied, the control command output means for suspending the output of the control command to the generator and the control command output means.
Equipped with
Some of the combinations are determined by the determination means to not satisfy the maintenance operation start condition even when the power failure probability information indicates the occurrence of the disaster.
When the elapsed period length has reached a predetermined maximum allowable period length, the combination of the elapsed period length information and any power failure probability information is the maintenance operation start condition by the determination means. It is determined that the condition is satisfied.

According to the above configuration, even if the power failure probability information indicates the occurrence of a disaster, the determination means may determine that the maintenance operation start condition is not satisfied, and the output of the control command by the control command output means may be postponed. be. For this reason, compared to the conventional technique in which the generator is unconditionally started when a disaster occurs, it is possible to suppress the execution of maintenance operation at an excessive frequency.

Further, when the elapsed period length from the last maintenance operation performed by the generator has reached a predetermined maximum allowable period length, the combination of the elapsed period length information and any power failure probability information is determined. It is determined by the means that the maintenance operation start condition is satisfied, and the control command is output to the generator by the control command output means. Therefore, it is possible to prevent the interval between the maintenance operation of the generator and the next maintenance operation from being too wide.

Conceptual diagram showing the configuration of the power generation system according to the first embodiment A block diagram showing the configuration of the generator control device according to the first embodiment. Conceptual diagram showing the contents of the power failure probability index specific table according to the first embodiment. A block diagram showing the functions of the generator control device according to the first embodiment. Flow chart of power failure probability index identification processing according to the first embodiment Flowchart of elapsed period length index specification processing according to the first embodiment Flow chart of maintenance operation control according to the first embodiment Conceptual diagram which shows one display example of the display part of the generator control device which concerns on Embodiment 1. A conceptual diagram showing another display example of the display unit of the generator control device according to the first embodiment. Flow chart of maintenance operation control according to the second embodiment Conceptual diagram showing the configuration of the power generation system according to the third embodiment Conceptual diagram showing the configuration of the power generation system according to the fourth embodiment

Hereinafter, the power generation system according to the first to fourth embodiments of the present invention will be described with reference to the drawings. In the figure, the same or corresponding parts are designated by the same reference numerals.

[Embodiment 1]
As shown in FIG. 1, the power generation system 300 according to the present embodiment includes a generator 100 that supplies power to the load LD instead of the commercial power source when a power failure occurs in the commercial power source, and a generator that controls the generator 100. A control device 200 is provided.

The load LD refers to electrical equipment installed in factories, hospitals, buildings, and the like. Further, in the present specification, "power outage" means not only that the electric power that can be supplied by the commercial power supply becomes zero, but also that the electric power supplied from the commercial power supply becomes insufficient or unstable. The concept also includes the fact that the power supply cannot operate the load LD properly.

The generator 100 has a power generation mechanism 110 that generates electric power by being driven, and a prime mover 120 that drives the power generation mechanism 110.

The prime mover 120 includes an engine that generates kinetic energy by burning stored fuel, and a control unit that controls the start and stop of the engine and the number of revolutions at the time of start-up according to various commands from the generator control device 200. include. The electric power generation mechanism 110 converts the kinetic energy generated by the prime mover 120 into electric power by electromagnetic induction. The electric power generated by the electric power generation mechanism 110 is supplied to the load LD.

The electric power generation mechanism 110 can be switched between a connected state in which the power generation mechanism 110 is mechanically connected to the motor 120 and driven by the motor 120, and a non-connected state in which the transmission of power from the motor 120 is cut off. In the unconnected state, the prime mover 120 can be operated without generating electricity by the power generation mechanism 110.

The generator 100 performs a maintenance operation, which is an operation for maintenance, while the commercial power source is sound. In the maintenance operation, it is not necessary for the prime mover 120 to supply power to the load LD, so that the power generation mechanism 110 and the prime mover 120 may be in a non-connected state.

The purpose of the maintenance operation is to keep the prime mover 120 in a state where it can be started immediately by circulating the lubricating oil inside the engine constituting the prime mover 120 and eliminating the clogging of the piping through which the stored fuel passes. Is.

The generator control device 200 controls the generator 100 to perform maintenance operation. The generator control device 200 receives the disaster bulletin data DT indicating the occurrence of a disaster and the degree of the disaster that has occurred from the disaster bulletin system group DS provided by the Japan Meteorological Agency or the electric power company through the communication line NE.

Then, the generator control device 200 determines whether or not the generator 100 needs to perform the maintenance operation by using the received disaster bulletin data DT, and when it is determined that the maintenance operation is necessary, the generator control device 200 determines whether or not the maintenance operation is necessary. Have the generator 100 perform maintenance operation.

The disaster breaking news system group DS includes a lightning breaking system DS1 that provides lightning breaking data indicating the occurrence of lightning and the activity of the lightning that has occurred, and an earthquake that provides earthquake breaking data showing the occurrence of an earthquake and the degree of the earthquake that has occurred. The breaking system DS2 is included. That is, the disaster breaking news data DT includes lightning breaking news data and earthquake breaking news data.

Hereinafter, the generator control device 200 will be described in detail with reference to FIGS. 2 to 8.

As shown in FIG. 2, the generator control device 200 includes a communication unit 210 connected to the communication line NE. The disaster breaking news data DT provided by the disaster breaking news system group DS shown in FIG. 1 is taken into the generator control device 200 through the communication unit 210.

Further, the generator control device 200 is executed with a generator control program 221 that defines a maintenance operation control procedure including a determination as to whether or not to cause the generator 100 shown in FIG. 1 to perform maintenance operation. An auxiliary storage unit 220 is provided as a storage means for storing the maintenance operation execution date data 222 that records the date.

Further, the auxiliary storage unit 220 also stores a power failure probability index specifying table 223 for specifying a material for determining whether or not to cause the generator 100 to perform maintenance operation.

As shown in FIG. 3, the power outage probability index specification table 223 is used as power outage probability information indicating the probability of a power outage caused by the earthquake or lightning for each of the seismic intensity of the earthquake that occurred and the activity of the lightning that occurred. It is associated with the power outage probability index of.

The information for specifying the seismic intensity of the earthquake is included in the earthquake bulletin data output by the earthquake bulletin system DS2 among the disaster bulletin data DTs shown in FIG. Further, the information for specifying the activity level of lightning is included in the lightning breaking data output by the lightning breaking system DS1 among the disaster breaking news data DT shown in FIG.

The power outage probability index is an index that takes a larger value as the probability of power failure occurs, specifically, it is a value expressing the probability of power failure in percentage units. The greater the degree of disaster, the higher the probability of a power outage. Therefore, the power outage probability index takes a larger value as the degree of disaster, that is, the seismic intensity of an earthquake and the activity of lightning increases. This power failure probability index is used as a material for determining whether or not to cause the generator 100 to perform maintenance operation in the above-mentioned maintenance operation control.

Returning to FIG. 2, the explanation will be continued. The generator control device 200 also includes a display unit 230 as a determination result output means for displaying the result of determination as to whether or not to cause the generator 100 to perform maintenance operation. The display unit 230 is configured by a display that visually outputs the result of determination as to whether or not to perform maintenance operation for the user.

Further, the generator control device 200 includes a CPU (Central Processing Unit) 240 that executes the generator control program 221 and a main storage unit 250 that temporarily stores the generator control program 221 and various data by the CPU 240.

The CPU 240 functions as each unit shown in FIG. 4 that performs maintenance operation control in cooperation with each other by executing the generator control program 221. Hereinafter, the functions realized by the CPU 240 will be described with reference to FIG.

As shown in FIG. 4, the CPU 240 has a function of a determination unit 243 as a determination means for determining whether or not to cause the generator 100 to perform maintenance operation, and causes the generator 100 to perform maintenance operation by the determination unit 243. It has a function of the control command output unit 244 as a control command output means for outputting the control command CS for executing the maintenance operation to the generator 100 when the determination is made.

Further, the CPU 240 has a function of the power failure probability index specifying unit 241 as a power failure probability information specifying means. The power failure probability index specifying unit 241 performs a power failure probability index specifying process for specifying the power failure probability index using the disaster bulletin data DT and the power failure probability index specifying table 223 shown in FIG. 3, and determines the specified power failure probability index. Give to unit 243.

Further, the CPU 240 has a function of the elapsed period length index specifying unit 242 as the elapsed period length information specifying means. The elapsed period length index specifying unit 242 performs and specifies the elapsed period length index specifying process for specifying the elapsed period length index as the elapsed period length information indicating the elapsed period length from the last performed maintenance operation of the generator 100. The elapsed period length index is given to the determination unit 243.

The determination unit 243 acquires the power failure probability index specified by the power failure probability index specifying unit 241 and the elapsed period length index specified by the elapsed period length index specifying unit 242, and the acquired power failure probability index and elapsed period length index. And are used to specify a numerical value indicating the degree of necessity for the generator 100 to perform maintenance operation.

The determination unit 243 also controls the display unit 230 to display a power failure probability index, an elapsed period length index, and a numerical value indicating the degree of necessity for the generator 100 to perform maintenance operation.

Then, the determination unit 243 compares a numerical value indicating the degree of necessity for the generator 100 to perform the maintenance operation with a threshold value predetermined as indicating that the generator 100 needs to perform the maintenance operation. Therefore, it is determined whether or not the generator 100 is to perform the maintenance operation.

Hereinafter, the operation of each part shown in FIG. 4 will be described in detail with reference to FIGS. 5 to 7.

With reference to FIG. 5, the power failure probability index specifying process performed by the power failure probability index specifying unit 241 will be described. First, the power failure probability index specifying unit 241 confirms whether or not a disaster has occurred at present, that is, whether or not the disaster breaking news system group DS shown in FIG. 1 is transmitting the disaster breaking news data DT (step S11). ).

Next, the power failure probability index specifying unit 241 receives the disaster breaking news data DT when the disaster breaking news data DT is transmitted from the disaster breaking news system group DS (step S12; YES), and the received disaster breaking news data DT receives the disaster breaking news data DT. The power failure probability index corresponding to the degree of disaster to be represented is specified using the power failure probability index specification table 223 shown in FIG. 3 (step S13), and this process is completed.

In step S13, when the disaster bulletin data DT is earthquake bulletin data indicating the occurrence of an earthquake, the power failure probability index corresponding to the seismic intensity of the earthquake represented by the earthquake bulletin data DT is specified as the power failure probability index shown in FIG. Specified by table 223.

Similarly, when the disaster flash report data DT is lightning flash report data indicating the occurrence of lightning, the power failure probability index corresponding to the lightning activity represented by the lightning flash report data is determined by the power failure probability index specification table 223 shown in FIG. Be identified.

On the other hand, the power failure probability index specifying unit 241 specifies that the power failure probability index is zero (step S14) when the disaster bulletin data DT is not transmitted from the disaster bulletin system group DS (step S12; NO). Finish the process.

As described above, the power outage probability index takes a value of zero when there is no disaster, and takes a value exceeding zero when a disaster has occurred. Therefore, it is possible to identify whether or not a disaster has occurred by the power failure probability index.

Next, with reference to FIG. 6, the elapsed period length index specifying process performed by the elapsed period length index specifying unit 242 will be described.

As shown in FIG. 6, first, the elapsed period length index specifying unit 242 confirms the current date (step S21). The elapsed period length index specifying unit 242 has a timekeeping function for measuring the date and time, and the current date can be specified by the timekeeping function.

Next, the elapsed period length index specifying unit 242 refers to the maintenance operation execution date data 222 of the auxiliary storage unit 220 shown in FIG. 2, and confirms the date of the previous maintenance operation represented by the maintenance operation execution date data 222 (). Step S22).

Next, the elapsed period length index specifying unit 242 calculates the difference between the current date specified in step S21 and the date of the previous maintenance operation specified in step S22, thereby calculating the elapsed period from the previous maintenance operation. The number of days elapsed as the length is obtained (step S23).

Next, the elapsed period length index specifying unit 242 calculates the ratio of the elapsed days obtained in step S23 to the maximum allowable period length allowed as the maximum value of the interval between the maintenance operation and the next maintenance operation. The percentage is calculated in percentage units. The calculated numerical value is the elapsed period length index.

Specifically, in the present embodiment, the maximum allowable period length is 30 days, and the elapsed period length index specifying unit 242 calculates the number of elapsed days obtained in step S23 ÷ 30 days × 100%, and calculates the calculated value. The elapsed period length index is used (step S24). This completes the elapsed period length index specification process.

Next, with reference to FIG. 7, maintenance operation control including the operation of the determination unit 243 and the control command output unit 244 will be described.

As shown in FIG. 7, first, the power failure probability index specifying process of FIG. 5 described above is performed by the power failure probability index specifying unit 241 (step S31), and the elapsed period length index specifying unit 242 performs the power failure probability index specifying process of FIG. The elapsed period length index specifying process is performed (step S32).

Next, the determination unit 243 is specified by the power failure probability index specified by the power failure probability index specifying process and the elapsed period length index specifying process as a specific step to specify a numerical value indicating the degree of necessity for performing maintenance operation. The sum with the elapsed period length index is calculated (step S33).

This sum is a numerical value indicating the degree of necessity to carry out maintenance operation, and the degree of necessity of maintenance operation determined by the degree of disaster and the necessity of maintenance operation determined by the elapsed period from the previous maintenance operation. It is a numerical value that takes into account the degree.

Next, the determination unit 243 indicates that the sum obtained in step S33 needs to execute the maintenance operation as a determination step for determining whether or not to cause the generator 100 to execute the maintenance operation. It is determined whether or not the condition is satisfied, specifically, whether or not the sum obtained in step S33 is equal to or greater than a predetermined threshold value (step S34).

Here, the threshold value is a numerical value expressed in the same unit as the power failure probability index and the elapsed period length index. Specifically, in this embodiment, the threshold value is 100%.

Next, if the sum obtained in step S33 is equal to or greater than the threshold value (step S34; YES), the determination unit 243 indicates to the display unit 230 that the maintenance operation is to be performed because the maintenance operation start condition is satisfied. Display (step S35).

FIG. 8A illustrates a display mode of the display unit 230 in step S35. In this way, the display unit 230 not only indicates that maintenance operation is performed, but also indicates that the total index, which is the sum of the power failure probability index and the elapsed period length index, is 100% or more, which is a specific value of the total index. , And the respective values of the power failure probability index and the elapsed period length index as the breakdown thereof are displayed. Therefore, the user can grasp the cause leading to the execution of the maintenance operation.

Returning to FIG. 7, after step S35, the control command output unit 244 outputs the control command CS for executing the maintenance operation to the generator 100 (step S36). As a result, the maintenance operation of the generator 100 is carried out for a certain period of time.

Next, the elapsed period length index specifying unit 242 updates the maintenance operation execution date data 222 by recording the date on which the maintenance operation was executed in step S36 as the maintenance operation execution date data 222 shown in FIG. Step S37). After that, the process returns to step S31 again.

On the other hand, if the sum obtained in step S33 is less than the threshold value (step S34; NO), the determination unit 243 causes the display unit 230 to display that the maintenance operation is not yet performed because the maintenance operation start condition is not satisfied. (Step S38), the process returns to step S31 again. In this case, the output of the control command CS to the generator 100 by the control command output unit 244 is postponed.

FIG. 8B illustrates a display mode of the display unit 230 in step S38. In this way, the display unit 230 not only shows the specific contents of the maintenance operation start condition, that is, the maintenance operation is executed when the total index reaches 100%, but also the specific value of the current total index. The values of the power failure probability index and the elapsed period length index as the breakdown are displayed.

Therefore, the user can grasp the reason why the maintenance operation is not performed yet, and can grasp the degree of necessity of the maintenance operation at present by the total index.

As described above, according to the present embodiment, the power failure probability index indicating the degree of necessity of maintenance operation determined by the degree of disaster and the degree of necessity of maintenance operation determined by the elapsed period length from the previous maintenance operation. Whether or not to perform maintenance operation is determined in consideration of both the elapsed period length index representing the above. Therefore, as a result of optimizing the timing of performing maintenance operation, the following effects can be obtained.

That is, according to the present embodiment, even when the power failure probability index indicates the occurrence of a disaster, the determination unit 243 determines that the maintenance operation start condition is not satisfied, and the control command output unit 244 determines that the control command CS Output may be forgotten. Specifically, as shown in FIG. 8B, even if the power failure probability index takes a value exceeding zero, if the sum with the elapsed period length index is less than the threshold value of 100%, maintenance operation is performed. Since the start condition is not satisfied, the output of the control command CS by the control command output unit 244 is postponed.

As described above, when the degree of disaster is relatively small and the elapsed period length from the previous maintenance operation is less than 30 days, which is the maximum allowable period length, the maintenance operation is postponed. Therefore, as compared with the conventional technique in which the generator 100 is unconditionally started when a disaster occurs, it is possible to suppress the execution of maintenance operation at an excessive frequency.

Further, the elapsed period length index takes a value equal to 100%, which is the above-mentioned threshold value, when the elapsed period length from the previous maintenance operation reaches 30 days, which is the maximum allowable period length.

Therefore, when the elapsed period length from the previous maintenance operation has reached 30 days, the sum of the elapsed period length index and the arbitrary power failure probability index is determined by the determination unit 243 to satisfy the maintenance operation start condition. , The control command output unit 244 outputs the control command CS to the generator 100. Therefore, it is prevented that the interval between the maintenance operation and the next maintenance operation is longer than 30 days.

Further, in the power outage probability index, when the degree of the disaster that has occurred is above a predetermined level, specifically, as shown in FIG. 3, the seismic intensity of the earthquake is 6 or less or lightning. When the activity level of is 4 or more, the value equal to 100%, which is the above-mentioned threshold value, is taken.

Therefore, when a disaster above a certain level occurs, the sum of the arbitrary elapsed period length index and the power failure probability index is determined by the determination unit 243 to satisfy the maintenance operation start condition, and the control command output unit 244 determines. The control command CS is output to the generator 100. Therefore, in the event of a disaster above a certain level, maintenance operation is always carried out.

[Embodiment 2]
In the first embodiment, when the determination unit 243 determines that the maintenance operation needs to be performed, the generator 100 is made to perform the maintenance operation for a certain period of time, but a power failure occurs during the maintenance operation. In that case, power transmission to the load LD may be started while maintaining the operation of the generator 100. Hereinafter, a specific example thereof will be described.

As shown in FIG. 9, in the present embodiment, after the control command output unit 244 outputs the control command CS to the generator 100 through the above-mentioned step S35 and the maintenance operation is started (step S41), the control command is given. The output unit 244 determines whether or not a power failure has occurred in the commercial power supply (step S42).

If the commercial power supply has not had a power failure (step S42; NO), the control command output unit 244 determines whether or not a predetermined fixed period for performing maintenance operation has elapsed (step S43). If a certain period has not passed yet (step S43; NO), the process returns to step S42.

On the other hand, when a certain period of time has elapsed (step S43; YES), the control command output unit 244 ends the maintenance operation by outputting an end command to the generator 100 to end the maintenance operation. (Step S44). After that, the process proceeds to step S37 described above.

On the other hand, if a power failure occurs in the commercial power supply in step S42 (step S42; YES), the control command output unit 244 controls the generator 100 to transmit power to the load LD until the power failure is resolved (step S42). S45), the process proceeds to step S37 described above.

If the maintenance operation is started in the non-connected state in step S41 in a non-connected state in which the power transmission from the prime mover 120 shown in FIG. 1 to the power generation mechanism 110 is cut off, when YES is determined in step S42, The control command output unit 244 switches the generator 100 to a connected state in which power is transmitted from the prime mover 120 shown in FIG. 1 to the power generation mechanism 110, so that power can be transmitted from the generator 100 to the load LD.

According to the present embodiment, if a power failure occurs after the maintenance operation of the generator 100 is started, the power transmission to the load LD is started while the operation of the generator 100 is maintained. Therefore, the period from the occurrence of the power failure to the start of power transmission from the generator 100 to the load LD can be shortened. Other configurations and effects are the same as in the first embodiment.

[Embodiment 3]
In the first embodiment, as shown in FIG. 4, the generator control device 200 includes the power failure probability index specifying unit 241 as the power failure probability index specifying means, but the power failure probability index specifying means is the generator control device. A device other than 200 may be provided. Hereinafter, a specific example thereof will be described.

As shown in FIG. 10, the power generation system 500 according to the present embodiment includes a power failure probability index specifying device 400 as a power failure probability index specifying means. The power failure probability index specifying device 400 plays the same role as the power failure probability index specifying unit 241 shown in FIG. That is, the power failure probability index specifying device 400 receives the disaster bulletin data DT from the disaster bulletin system group DS, and uses the received disaster bulletin data DT to perform a power failure probability index specifying process for specifying the power failure probability index.

Further, the power generation system 500 according to the present embodiment includes a plurality of, specifically three generator control devices 200A, 200B, and 200C, a generator 100A controlled by the generator control device 200A, and a generator. The generator 100B controlled by the control device 200B and the generator 100C controlled by the generator control device 200C are provided.

The power failure probability index specifying device 400 functions as a power failure probability index specifying means common to the three generator control devices 200A, 200B, and 200C. Therefore, each of the three generator control devices 200A, 200B, and 200C has a configuration in which the power failure probability index specifying unit 241 shown in FIG. 4 is omitted in the generator control device 200 shown in FIG.

Each of the generators 100A, 100B, and 100C has the same configuration as the generator 100 shown in FIG. The generator 100A supplies power to the load LDA, the generator 100B supplies power to the load LDB, and the generator 100C supplies power to the load LDC. Loads LDA, LDB, and LDC are located in different areas.

The power failure probability index specifying device 400 generates three power failure probability data SA, SB, and SC using the disaster bulletin data DT, and outputs the three power failure probability data SA, SB, and SC to the generator control devices 200A, 200B, and 200C, respectively, through the communication line NE.

The power failure probability data SA includes a power failure probability index representing the probability that the commercial power supply that supplies power to the load LDA will fail. The power failure probability data SB includes a power failure probability index representing the probability that the commercial power supply that supplies power to the load LDB will fail. The power failure probability data SC includes a power failure probability index representing the probability that the commercial power supply that supplies power to the load LDC will fail.

Upon receiving the power failure probability data SA, the determination unit 243 of FIG. 4 constituting the generator control device 200A acquires the power failure probability index included in the power failure probability data SA. Upon receiving the power failure probability data SB, the determination unit 243 of FIG. 4 constituting the generator control device 200B acquires the power failure probability index included in the power failure probability data SB. Upon receiving the power failure probability data SC, the determination unit 243 of FIG. 4 constituting the generator control device 200C acquires the power failure probability index included in the power failure probability data SC.

The disaster breaking news data DT maps the degree of disaster in each area where the disaster occurred. The probability of a power outage due to a disaster may vary depending on the area where the loads LDA, LDB, and LDC are located. Therefore, the power failure probability index specifying device 400 uses the disaster breaking news data DT to generate power failure probability data SA, SB, and SC for each area where the loads LDA, LDB, and LDC are arranged.

According to the present embodiment, since each of the generator control devices 200A, 200B, and 200C does not have to have the function of the power failure probability index specifying means for specifying the power failure probability index, the generator control devices 200A, 200B, and 200C The configuration of 200C can be simplified. Other configurations and effects are the same as in the first embodiment.

[Embodiment 4]
In the first embodiment, the configuration in which the generator control device 200 is installed at the same place as the generator 100 without going through the communication line NE is exemplified. The generator control device 200 may be installed in a place different from the place where the generator 100 is installed. Hereinafter, a specific example thereof will be described.

As shown in FIG. 11, in the power generation system 600 according to the present embodiment, the generator control device 200 is installed at a place different from the place where the generator 100 is installed via the communication line NE. The generator control device 200 remotely controls the execution of maintenance operation of the generator 100 via the communication line NE.

According to this embodiment, it is not necessary to arrange the generator control device 200 at the place where the generator 100 is installed. As in the case of the third embodiment, even if a plurality of generators 100 are provided and one generator control device 200 remotely controls the execution of maintenance operation in each of the plurality of generators 100. good. Other configurations and effects are the same as in the first embodiment.

The embodiment of the present invention has been described above. The present invention is not limited to this, and the modifications described below are also possible.

In the first embodiment, the case where the combination of the elapsed period length information and the power failure probability information is the sum of the elapsed period length index and the power failure probability index has been described, but the elapsed period length index, the power failure probability index, and the threshold value are described. Depending on how it is defined, the combination of elapsed period length information and power outage probability information is the difference, product, or quotient between the elapsed period length index and power outage probability index, or the two variables of the elapsed period length index and power outage probability index. It may be a function.

As a specific example, when the elapsed period length index is an index that takes a larger value as the elapsed period from the previous maintenance operation is shorter, or the power failure probability index is an index that takes a larger value as the degree of disaster is smaller. , The combination of the elapsed period length information and the power failure probability information may be the difference between the elapsed period length index and the power failure probability index.

Further, the elapsed period length information may be any information indicating the elapsed period length from the previous maintenance operation, and may not necessarily be an index that takes a numerical value. Similarly, the power outage probability information may be any information as long as it indicates whether or not a disaster that may cause a power outage has occurred, and if a disaster has occurred, the probability of a power outage caused by the disaster, and is not necessarily a numerical value. It does not have to be an index to take.

As a specific example, when each of the elapsed period length information and the power failure probability information is a symbol, a table is provided that defines which combination of all the combinations of the symbols satisfies the maintenance operation start condition. Therefore, the determination made by the determination unit 243 can be realized.

In the first embodiment, the disaster breaking data DT received by the power failure probability index specifying unit 241 represents the occurrence and degree of lightning or an earthquake, but the disaster breaking data DT relates to other disasters. You may. As a specific example, the breaking news data DT may represent the occurrence and extent of a typhoon, tsunami, or flood.

In the first embodiment, the elapsed period length index specifying unit 242 measures the elapsed period length from the previous maintenance operation of the generator 100 in units of "days", but more finely, "hours", "minutes", Alternatively, it may be measured in units of "seconds". Further, the maximum allowable period length is not necessarily limited to 30 days, and may be a period of less than 30 days.

In the first embodiment, the prime mover 120 is composed of an engine, but the prime mover 120 is not particularly limited as long as it is an engine that generates kinetic energy converted into electric power. As a specific example, the prime mover 120 may be a gas turbine as well as an engine such as a diesel engine, a gasoline engine, or a gas engine. Further, the communication line NE shown in FIGS. 1, 10 and 11 may be a dedicated line or a public communication line.

The generator control device 200 according to each of the above embodiments can be realized by an existing computer. That is, by installing the generator control program 221 shown in FIG. 2 on a computer, the computer can function as the generator control device 200. The generator control program 221 may be distributed via a communication network, or may be stored and distributed in a computer-readable recording medium.

100, 100A, 100B, 100C ... generator, 110 ... power generation mechanism, 120 ... prime mover, 200, 200A, 200B, 200C ... generator control device, 210 ... communication unit, 220 ... auxiliary storage unit, 221 ... generator control Program 222 ... Maintenance operation execution date data, 223 ... Power failure probability index specification table, 230 ... Display unit, 240 ... CPU, 241 ... Power failure probability index specification unit (power failure probability information identification means), 242 ... Elapsed period length index specification unit (Elapsed period length information specifying means) 243 ... Judgment unit (judgment means) 244 ... Control command output unit (control command output means), 250 ... Main storage unit, 300, 500, 600 ... Power generation system, 400 ... Power failure probability Index specifying device (power failure probability index specifying means), CS ... control command, DS ... disaster breaking system group, DS1 ... lightning breaking system, DS2 ... earthquake breaking system, DT ... disaster breaking data, LD, LDA, LDB, LDC ... load , NE ... Communication line, SA, SB, SC ... Power failure probability data.

Claims (6)

When a power failure occurs in the commercial power source, a generator that supplies power to the load on behalf of the commercial power source and performs maintenance operation, which is an operation for maintenance, is controlled during the period when the commercial power source is sound. It ’s a generator control device.
Elapsed period length information indicating the elapsed period length from the maintenance operation previously executed by the generator, whether or not a disaster that may cause a power outage has occurred, and the disaster if the disaster occurs. It is necessary to acquire the power failure probability information representing the occurrence probability of the power failure due to the above, and to make the generator perform the maintenance operation by the combination of the acquired elapsed period length information and the power failure probability information. A determination means for determining whether or not a predetermined maintenance operation start condition is satisfied as an expression, and a determination means for determining whether or not the condition is satisfied.
When the determination means determines that the combination satisfies the maintenance operation start condition, a control command for executing the maintenance operation is output to the generator, and the determination means causes the combination to start the maintenance operation. If it is determined that the conditions are not satisfied, the control command output means for suspending the output of the control command to the generator and the control command output means.
Equipped with
Some of the combinations are determined by the determination means to not satisfy the maintenance operation start condition even when the power failure probability information indicates the occurrence of the disaster.
When the elapsed period length has reached a predetermined maximum allowable period length, the combination of the elapsed period length information and any power failure probability information is the maintenance operation start condition by the determination means. Judged to meet,
Generator control device. The elapsed period length information is an index that takes a larger numerical value as the elapsed period length is longer.
The power failure probability information is an index that takes a larger numerical value as the probability of occurrence of the power failure increases, and can specify whether or not the disaster has occurred based on the numerical value.
The combination of the elapsed period length information and the power failure probability information refers to the sum of the index represented by the power failure probability information and the index represented by the elapsed period length information.
The maintenance operation start condition refers to a condition in which the sum is equal to or higher than a predetermined threshold value indicating that the generator needs to perform the maintenance operation.
The generator control device according to claim 1. The disaster probability data indicating the occurrence of a disaster and the degree of the disaster that has occurred is received, the power failure probability information is specified using the received disaster bulletin data, and the specified power failure probability information is given to the determination means. Information identification means,
The generator control device according to claim 1 or 2, further comprising. The elapsed period length from the last performed maintenance operation of the generator is obtained, the elapsed period length information is specified based on the obtained elapsed period length, and the specified elapsed period length information is used as the determination means. Elapsed period length to give information identification means,
The generator control device according to any one of claims 1 to 3, further comprising. The generator control device according to any one of claims 1 to 4.
The generator controlled by the generator control device and
A power generation system. When a power failure occurs in the commercial power source, a generator that supplies power to the load in place of the commercial power source and performs maintenance operation, which is an operation for maintenance, is controlled during the period when the commercial power source is sound. It ’s a generator control method.
Elapsed period length information indicating the elapsed period length from the maintenance operation previously executed by the generator, whether or not a disaster that may cause a power outage has occurred, and the disaster if the disaster occurs. The degree of necessity for causing the generator to perform the maintenance operation by acquiring the power failure probability information indicating the occurrence probability of the power failure due to the above and using the acquired power outage length information and the power failure probability information. Specific steps to identify the numerical value to be represented, and
Based on the comparison between the numerical value specified in the specific step and a threshold value predetermined as indicating that the generator needs to perform the maintenance operation, the generator performs the maintenance operation. A judgment step to determine whether or not to make it
A generator control method.

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