JP7600707B2 - Power failure detection system and power failure detection method - Google Patents

Description

The present invention relates to a system and method for detecting and sensing power outages, and in particular to a power outage detection system and a power outage detection method for detecting power outages that cannot be detected by a power distribution automation system.

Conventionally, distribution automation systems have been installed and operated to monitor distribution systems and control switches, identify the outage area on the distribution system when a power outage occurs, and generate outage information such as the occurrence of a power outage and the restoration of power supply based on the results of monitoring and control. In other words, distribution line accidents involving the tripping of a feeder circuit breaker (FCB) or automatic tripping of a pole-mounted circuit breaker (DM) can be actively dealt with by recovering the accident through the detection of the accident by the distribution automation system. However, distribution automation systems cannot detect distribution line accidents such as breaks or open phases in high-voltage distribution lines that do not involve tripping of an FCB or automatic tripping of a DM. For this reason, they have responded passively to power outage and failure information from consumers.

There is also a known system that receives power outage information from a power meter installed in each home and determines the cause and factors of the power outage (see, for example, Patent Document 1). When this system receives power outage information from a power meter, it counts up the number of power outages on the corresponding service pole, and when that number reaches a threshold, it requests power outage information from power meters that have not transmitted power outage information within the service pole's area, thereby determining whether the power outage is caused by that service pole.

JP 2013-42609 A

However, because distribution automation systems cannot detect distribution line accidents such as breaks or loss of phase in high-voltage distribution lines, in the past, responses were made after on-site confirmation based on power outage and failure information from customers. In other words, when information about a power outage or failure was received from a customer, the initial response was usually made by one person, and then, when an on-site confirmation revealed that the cause was a break or loss of phase in a high-voltage distribution line, multiple recovery personnel were secured to respond to the restoration. This meant that it could take time and effort to restore the power outage. Similarly, even if an individual power outage occurred due to a defective service line or transformer, it could not be detected by the distribution automation system, so there was a risk that a prompt response could not be made.

In addition, although the system in Patent Document 1 can determine whether the cause of the power outage is a service pole, it cannot detect whether the cause is a break or missing phase in the high-voltage distribution line. For this reason, as with conventional systems, it may take time and effort to restore power.

The present invention aims to provide a power outage detection system and a power outage detection method that enable rapid restoration of power even in the event of a power outage caused by a phase loss in a high-voltage distribution line.

In order to solve the above problem, the invention of claim 1 is a power outage detection system that includes a power distribution automation system that monitors a power distribution system and, when a power outage occurs, controls switches to distribute power to areas other than the power outage area; a construction power outage storage means that stores construction power outage information including the scope and duration of the construction power outage; a watt-hour meter that is installed in each consumer's home and measures power consumption and has a function of detecting power outages; and a power outage management means that is communicatively connected to the power distribution automation system and the watt-hour meter and can acquire the construction power outage information, and the power outage management means is characterized in that, when it receives information that a power outage has been detected from the watt-hour meters of multiple banks on the same distribution line in an area other than the power outage area detected by the power distribution automation system and not during a construction power outage, it outputs a power outage warning that clearly indicates the identification information of the bank that is closest to the power source among the banks.

The invention of claim 2 is characterized in that in the power outage detection system of claim 1, when the power outage management means receives information indicating that a power outage has been detected from multiple watt-hour meters of a single bank on the same distribution line in an area other than the power outage section detected by the power distribution automation system and not during a construction outage, it issues a fault ticket to accept a bank fault.

The invention of claim 3 is characterized in that, in the power outage detection system of claim 1 or 2, when the power outage management means receives information from a single watt-hour meter on the same distribution line in an area other than the outage section detected by the power distribution automation system and not during a construction outage, if the customer's home where the watt-hour meter is installed is under contract, it issues a fault ticket to accept individual faults during the contract, and if the customer's home where the watt-hour meter is installed is not under contract, it issues a fault ticket to accept individual faults during non-contract.

The invention of claim 4 is a power outage detection method comprising: a power distribution automation system that monitors a power distribution system and, when a power outage occurs, controls switches to distribute power to areas other than the blackout area; a construction power outage storage means that stores construction power outage information including the scope and duration of the construction power outage; and a watt-hour meter that is installed in each consumer's home and measures power consumption and has a function of detecting power outages, and is characterized in that, in an area other than the blackout area detected by the power distribution automation system and not during a construction power outage, when information that a power outage has been detected from the watt-hour meters of multiple banks on the same distribution line is received, the method outputs a power outage warning that clearly indicates the identification information of the bank that is closest to the power source among the banks.

The invention of claim 5 is characterized in that, in the power outage detection method of claim 4, when information is received from multiple watt-hour meters of a single bank on the same distribution line that the power outage has been detected in an area other than the outage section detected by the power distribution automation system and that is not under construction, a fault ticket is issued to receive a bank fault.

The invention of claim 6 is characterized in that, in the power outage detection method of claim 4 or 5, when information is received from a single watt-hour meter on the same distribution line in an area other than the outage section detected by the power distribution automation system and not during a construction outage, if the customer's home where the watt-hour meter is installed is under contract, a fault ticket is issued to accept individual faults during the contract, and if the customer's home where the watt-hour meter is installed is not under contract, a fault ticket is issued to accept individual faults during non-contract.

According to the inventions described in claims 1 and 4, when information is received from the power meters of multiple banks of the same distribution line that a power outage has been detected in an area other than the outage section detected by the distribution automation system and that is not undergoing a construction outage, a power outage warning is output. Therefore, even if a power outage that cannot be detected by the distribution automation system or a power outage that is not a construction outage occurs, it is possible to quickly restore the power outage. For example, when a power outage occurs due to a phase loss in a high-voltage distribution line, a power outage may occur in the homes of customers in two or more banks of the same distribution line. Therefore, by outputting a power outage warning when information is received from the power meters of two or more banks of the same distribution line that a power outage has been detected, it is possible to quickly respond to a power outage due to a phase loss in a high-voltage distribution line and quickly restore the power outage. Moreover, since the power outage warning clearly indicates the identification information of the bank closest to the power source among the multiple outage banks, it is possible to quickly investigate and confirm the cause of the power outage and achieve early restoration by investigating the area around that bank.

According to the inventions described in claims 2 and 5, when information is received from multiple watt-hour meters of a single bank on the same distribution line in an area other than the outage section detected by the distribution automation system and not during a construction outage, a fault ticket is issued to accept the bank failure. Therefore, even if a bank-specific power outage occurs due to a transformer failure or the like that cannot be detected by the distribution automation system and is not due to a construction outage, it is possible to quickly restore the power outage. In other words, when a bank-specific power outage occurs due to a transformer failure or the like, a power outage may occur at multiple consumer homes of a single bank. Therefore, by issuing a fault ticket for a bank failure when information is received from multiple watt-hour meters of a single bank on the same distribution line that a power outage has been detected, it is possible to quickly respond to the bank-specific power outage and quickly restore the power outage.

According to the inventions described in claims 3 and 6, when information is received from a single watt-hour meter on the same distribution line that a power outage has been detected in an area other than the outage section detected by the power distribution automation system and that is not undergoing a construction outage, a fault ticket is issued to accept an individual fault. Therefore, even if a customer-specific power outage occurs due to a service line break or the like that cannot be detected by the power distribution automation system and is not due to a construction outage, it is possible to quickly restore the power outage. In other words, when a customer-specific power outage occurs due to a service line break or the like, a power outage occurs only at a single customer's home. Therefore, by issuing a fault ticket for an individual fault when information is received from a single watt-hour meter on the same distribution line that a power outage has been detected, it is possible to quickly respond to the customer-specific power outage and quickly restore the power outage.

In addition, because a different fault ticket is issued depending on whether the customer's home with the watt-hour meter is under contract or not, it becomes possible to quickly take the appropriate action depending on whether the customer is under contract or not. For example, if the customer is under contract, the customer can be contacted and visited to quickly respond and restore power, which can increase the customer's satisfaction and reliability.

1 is a schematic configuration diagram showing a power outage detection system according to an embodiment of the present invention. FIG. 2 is a schematic configuration diagram showing a power distribution automation system of the power failure detection system of FIG. 1. 2 is a flowchart showing a power outage detection flow by the smart meter management operation system of the power outage detection system of FIG. 1 . 1 is a diagram showing an example of a bank configuration of a power distribution line according to an embodiment of the present invention; FIG. 5 is a diagram showing a first example of a power outage in the bank configuration of FIG. 4 . FIG. 5 is a diagram showing a second example of a power outage in the bank configuration of FIG. 4 . FIG. 5 is a diagram showing a third example of a power outage in the bank configuration of FIG. 4 .

The present invention will be described below based on the illustrated embodiment.

Figure 1 is a schematic diagram showing a power outage detection system 1 according to an embodiment of the present invention. This power outage detection system 1 is a system that detects and notifies of power outages, and in particular can detect power outages that cannot be detected by the power distribution automation system 2. The power outage detection system 1 mainly comprises the power distribution automation system 2, a smart meter (electricity meter) 3 installed in each consumer's home H, a power outage information storage device (construction power outage storage means) 4, and a smart meter management operation system (power outage management means) 5. The power distribution automation system 2 and the smart meter management operation system 5 are communicatively connected via a communication network NW, and each smart meter 3 and the smart meter management operation system 5 are communicatively connected via the communication network NW. Here, the communication network NW may be one communication network or multiple different communication networks.

In addition, a distribution line L is installed via a utility pole 101, and a service line 31 drawn from a pole-mounted transformer 102 installed on the utility pole 101 is connected to a smart meter 3, and electricity is supplied to a consumer's home H via the smart meter 3.

The power distribution automation system 2 is a system that monitors the power distribution system and, when a power outage occurs, controls switches and feeder breakers to distribute power to areas other than the power outage area, and has the same configuration as the power distribution automation system widely adopted by electric power companies and others. That is, as shown in FIG. 2, it includes a power distribution automation server, a power distribution remote control device (remote monitoring and control device), a monitoring and control desk 21, a system planning desk (workstation), and the like, each of which is connected by a LAN (Local Area Network). In addition, a pole-mounted switch (DM) 103 attached to a utility pole 101 is connected to the power distribution remote control device by a transmission line (dedicated line) 22, and further, a distribution substation 24 and the power distribution remote control device are connected by the transmission line 22 via a general control center 23.

The system constantly monitors the operational status of the distribution line L, and when a power outage occurs due to a power line accident, the system identifies the power outage section while controlling the opening and closing of the pole-mounted switch 103, etc., and distributes power (automatic reverse transmission) to the distribution line L other than the power outage section. In this way, the power outage section is defined by the opening and closing control of the pole-mounted switch 103, etc., and the power outage section and the non-powered section are separated by the pole-mounted switch 103, etc. In addition, when a power outage occurs due to a substation accident (extra-high voltage accident, momentary voltage drop, etc.), power is distributed (automatic reverse transmission) from the surrounding distribution line L to the area where the power outage occurred. Such a power distribution automation system 2 can detect accidental power outages due to ground faults and short circuit accidents, but cannot detect individual power outages due to breaks or missing phases in the high-voltage distribution line (power distribution line L), or defects (such as blown fuses) in the pole-mounted transformer 102 or defects (such as breaks) in the service line 31.

The smart meter 3 is an electricity meter that measures the power consumption at the consumer's home H where it is installed, and has a communication function and a function to detect power outages and power restoration. In other words, it is capable of communicating with other smart meters 3 and the smart meter management operation system 5 using power line communication (PLC) via the service line 31 and the distribution line L. It also constantly monitors the voltage on the power source side, i.e., the service line 31 side, detects a power outage by detecting that the voltage has dropped below a predetermined value, and transmits information to the smart meter management operation system 5 that the power outage has been detected (hereinafter, appropriately referred to as "power outage information"). At this time, the power outage information includes the meter number, which is identification information of the smart meter 3, and the date and time of the power outage. It also detects the power outage recovery by detecting that the voltage on the power source side has recovered to a predetermined value or higher, and transmits information to the smart meter management operation system 5 that the power outage recovery has been detected (hereinafter, appropriately referred to as "recovery information"). At this time, the recovery information includes the meter number of the smart meter 3 and the date and time of recovery.

The power outage information storage device 4 is a storage device that stores construction power outage information, including the scope and duration of the construction power outage. In other words, when construction or work involving a power outage is planned, construction power outage information, including the scope of the power distribution system that will be affected by the construction and the duration and date and time of the power outage, is stored. Here, the power outage information storage device 4 may be configured as a system that plans and manages power outage construction work, and construction power outage information may be stored in this system.

The smart meter management and operation system 5 is a system that is communicatively connected to the power distribution automation system 2 and each smart meter 3, and can access the power outage information storage device 4 to acquire construction power outage information. It manages and operates each smart meter 3, and also has the function of detecting and notifying of power outages that are not detected by the power distribution automation system 2, as described below, as a power outage management means.

In this embodiment, the description of the management and operation of each smart meter 3 is omitted, but a database is provided that stores, for each meter number of each smart meter 3, the identification information of the bank to which the smart meter 3 belongs (identification information and pole number of the utility pole 101), the contract status indicating whether the power company and the consumer are under contract (power is being supplied to the consumer's home H) or not under contract (power is not being supplied to the consumer's home H), the name and title of the contracted consumer, the consumer's contact information (email address, telephone number, etc.), the installation location, etc. In addition, this database stores a power distribution system diagram, which allows the positional relationship between the power source side described below and each bank to be known. Thus, in this embodiment, the power distribution system diagram is stored in the smart meter management and operation system 5, but the power distribution system diagram may be stored in another system or device so that the smart meter management and operation system 5 can access it.

Next, the power outage management means (power outage detection method) will be explained with reference to the flowchart shown in FIG. 3. Here, as shown in FIG. 4, a first bank (transformer) B1, a second bank B2, a third bank B3, a fourth bank B4, and a fifth bank B5 are arranged in order from the power source side on the same distribution line, and multiple smart meters 3 are connected to each of the banks B1 to B5.

First, power outage information is received from the smart meter 3, and if the power outage continues for a first predetermined time (e.g., 5 minutes) or more (if restoration information is not received), it is recognized that a power outage event has occurred (step S1). In this way, the occurrence of a power outage event is recognized when the power outage continues for a predetermined time or more in order to prevent the frequent or erroneous output of a power outage warning, etc., which will be described later.

Next, it is determined whether this power outage is a known power outage (step S2). In other words, it is determined whether this power outage information was sent from the power outage section detected by the power distribution automation system 2 or the area under construction power outage based on the power outage section detected by the power distribution automation system 2 and the construction power outage information in the power outage information storage device 4. At this time, it is determined whether it was sent during the construction power outage period of the construction power outage information. Then, if it is a known power outage (if "Y" in step S2), the power outage information is locked and discarded, and the process is terminated (step S3).

On the other hand, if the power outage is not a known one (if "N" in step S2), it is determined whether multiple power outage events have occurred within a second predetermined time period (within the time period during which power outage information is expected to be transmitted from multiple smart meters 3 in the case of the same power outage), that is, whether power outage information has been received from multiple smart meters 3 (step S4). Then, if multiple power outage events have occurred (if "Y" in step S4) and power outage events have occurred in multiple banks of the same distribution line L (if "multiple banks" in step S5), a power outage warning is output to notify of the power outage (step S6).

That is, in an area where power outages are unknown (an area other than the section powered out by the power distribution automation system 2 and not under construction), when power outage information is received from the smart meters 3 of multiple banks on the same distribution line L, it is determined that a power outage has occurred due to a phase loss in the distribution line L, and a power outage warning is output. For example, as shown in FIG. 5, when a phase loss occurs in only one of the three phases in the distribution line L between the first bank and the second bank B2, some banks (e.g., the second bank B2, the fourth bank B4, and the fifth bank B5) will experience a power outage depending on the connection phase of the pole transformer 102, and some banks (e.g., the third bank B3) will not experience a power outage, and such a power outage due to a phase loss will not be detected by the power distribution automation system 2. For this reason, when power outage information is received from the smart meters 3 of these banks B2, B4, and B5, it is determined that a power outage has occurred due to a phase loss in the distribution line L, and a power outage warning is output.

Here, the power failure warning includes information identifying the power failure distribution line L and the identification information of the bank that transmitted the power failure information and is closest to the power source. For example, in the case of FIG. 5, the identification information of the second bank B2 is displayed in the power failure warning. Any method may be used to output the power failure warning. For example, the power failure distribution line L may be displayed specifically in the power distribution system diagram displayed on the display 211 of the monitoring and control console 21 of the power distribution automation system 2, and the identification information of the bank that is closest to the power source may be displayed in a blinking manner. In other words, any method may be used as long as the bank that is closest to the power source (open-phase bank) is displayed clearly. The power failure warning may also be sent to a mobile terminal or computer that is set and registered in advance. The power failure warning may also include identification information of all the power failure banks and may display the identification information of the bank that is closest to the power source as the identification information of the open-phase bank.

On the other hand, if multiple power outage events have occurred (if "Y" in step S4) and the power outage event has occurred only in a single bank in the same distribution line L (if "single bank" in step S5), a fault ticket is automatically issued to accept the bank fault (step S7). That is, in an area where power outages are unknown, if power outage information is received from multiple smart meters 3 in a single bank in the same distribution line L, a fault ticket is automatically issued to accept the fault for each bank. For example, as shown in FIG. 6, if a bank-specific power outage occurs in the second bank B2 of the same distribution line L due to a transformer failure or the like, it is not detected by the distribution automation system 2. For this reason, if power outage information is received from multiple smart meters 3 in only the second bank B2, a fault ticket is issued on the assumption that a bank-specific power outage (power outage below the pole transformer 102) has occurred.

Here, a fault ticket is a receipt used by customer centers, sales offices, etc. to receive individual faults and inquiries from customers, and is created by filling in a specified format with the identification information of the bank/utility pole 101 that has been determined to be a bank-specific power outage, the name/name of the customer belonging to this bank, the date and time of the power outage, etc. Such a fault ticket is then sent to and issued by a server/computer at a customer center or sales office, etc., and individual responses are made to the relevant bank/utility pole 101 and customer. For example, when a customer makes an inquiry to the customer center, it becomes possible to respond quickly and appropriately.

In addition, if a single power outage event occurs (if "N" in step S4), and power is restored within a third predetermined time (e.g., 30 minutes), that is, if "restoration information" is received from the smart meter 3 (if "Y" in step S8), it is determined that this is a temporary power outage due to replacement of the smart meter 3, etc., and no action or processing is taken (step S9).

On the other hand, if power is not restored within the third specified time (if "N" in step S8), a fault ticket is automatically issued to accept an individual fault. That is, in an area where power outages are unknown, if power outage information is received from only a single smart meter 3 on the same distribution line L, a fault ticket is automatically issued to accept an individual fault for each smart meter 3 and consumer. For example, as shown in FIG. 7, if a consumer-specific power outage occurs at a specific consumer's home H in the first bank B1 of the same distribution line L due to a broken service line or the like, this is not detected by the distribution automation system 2. For this reason, if power outage information is received from only one smart meter 3 in the first bank B1, a fault ticket is issued, assuming that a power outage specific to the smart meter 3 has occurred.

At this time, if the consumer's home H where the smart meter 3 is installed is under contract (power supplying) ("under contract" in step S10), a fault ticket is issued to accept individual faults during the contract (step S11). On the other hand, if the consumer's home H where the smart meter 3 is installed is not under contract (not supplying power) ("discontinued" in step S10), a fault ticket is issued to accept individual faults during the non-contract period (step S12).

These fault reports are reception slips for receiving individual faults and inquiries, similar to the fault report in step S7 above, and are created by filling in a prescribed format with the meter number of the smart meter 3 that has been determined to be an individual fault, the date and time of the power outage, and so on. Furthermore, a fault report for an under-contract customer is created by noting that the customer is under contract, along with the name and title of the customer and contact information, while a fault report for an out-of-contract customer is created by noting that the customer is not under contract, and so on. These are then sent and issued to a server computer at a customer center or sales office, where individual responses can be made to the customer.

As described above, according to the power outage detection system 1 and the power outage detection method using the power outage detection system 1, when power outage information is received from smart meters 3 of multiple banks on the same distribution line L in an area other than the outage section detected by the power distribution automation system 2 and not during a construction outage, a power outage warning is output. Therefore, even if a power outage that cannot be detected by the power distribution automation system 2 or a power outage that is not a construction outage occurs, it is possible to quickly restore the power outage. For example, when a power outage occurs due to a phase loss in a high-voltage distribution line, a power outage may occur in consumer homes H of two or more banks on the same distribution line L. Therefore, by outputting a power outage warning when power outage information is received from smart meters 3 of two or more banks on the same distribution line L, it is possible to quickly respond to a power outage due to a phase loss in a high-voltage distribution line and quickly restore the power outage.

Moreover, the power outage warning indicates the identification information of the bank that is closest to the power source among the multiple banks that have lost power, so by investigating the area around that bank, it is possible to quickly identify and confirm the cause of the power outage and ensure early restoration. In other words, if a power outage occurs in multiple banks due to a phase loss, it is more likely that the phase loss occurred on the power source side than in the bank that has lost power and is closest to the power source. For this reason, by indicating the identification information of the bank that has lost power and is closest to the power source in the power outage warning, it is possible to investigate the area around that bank and ensure early restoration.

In addition, when power outage information is received from multiple smart meters 3 of a single bank on the same distribution line L in an area other than the outage section detected by the distribution automation system 2 and not during a construction outage, a fault ticket is issued to accept the bank failure. Therefore, even if a bank-specific power outage occurs due to a transformer fault or the like that cannot be detected by the distribution automation system 2 and is not due to a construction outage, it becomes possible to quickly restore the power. In other words, when a bank-specific power outage occurs due to a transformer fault or the like, a power outage may occur at multiple consumer homes H of a single bank. Therefore, by issuing a fault ticket for a bank failure when power outage information is received from multiple smart meters 3 of a single bank on the same distribution line L, it becomes possible to quickly respond to the bank-specific power outage and quickly restore the power outage.

Furthermore, when power outage information is received from a single smart meter 3 on the same distribution line L in an area other than the outage section detected by the distribution automation system 2 and not during a construction outage, a fault ticket is issued to accept the individual fault. This makes it possible to quickly restore the power even if a consumer-specific power outage occurs due to a service line break or the like that cannot be detected by the distribution automation system 2 and is not due to a construction outage. In other words, when a consumer-specific power outage occurs due to a service line break or the like, a power outage occurs only at a single consumer home H. This makes it possible to quickly respond to the consumer-specific power outage and quickly restore the power by issuing a fault ticket for an individual fault when power outage information is received from a single smart meter 3 on the same distribution line L.

In addition, because a different fault ticket is issued depending on whether the consumer's home H of the smart meter 3 is under contract or not, it becomes possible to quickly take the appropriate action depending on whether the consumer is under contract or not. For example, if the consumer is under contract, the consumer can be contacted and visited to quickly respond and restore the service, which can increase the consumer's satisfaction and reliability.

Although the embodiment of the present invention has been described above in detail, the specific configuration is not limited to this embodiment, and the present invention includes design changes that do not deviate from the gist of the present invention. For example, in the above embodiment, the smart meter management operation system 4 is provided with a power outage management means, but the power outage management means may be incorporated into another system, or may be configured as an independent server computer.

1 Power outage detection system 2 Power distribution automation system 21 Monitoring and control console 211 Display (display unit)
3. Smart meter (electricity meter)
4. Power outage information storage device (construction power outage storage means)
5. Smart meter management and operation system (power outage management means)
101 Utility pole 102 Pole transformer 103 Pole switch (switch)
H Customer's house L Distribution line B1-B5 Bank NW Communication network

Claims (6)

An automated power distribution system that monitors the power distribution system and, when a power outage occurs, controls switches to distribute power to areas other than those affected by the outage.
A construction power outage storage means for storing construction power outage information including the scope and duration of the construction power outage;
A power meter is installed in each customer's home to measure the amount of power consumed and has the function of detecting power outages.
A power outage management means that is communicatively connected to the power distribution automation system and the watthour meter and can acquire the construction power outage information;
and when the power outage management means receives information indicating that a power outage has been detected from the watt-hour meters of a plurality of banks in the same distribution line in an area other than the power outage section detected by the power distribution automation system and not during a construction power outage, the power outage management means outputs a power outage warning indicating identification information of the bank that is closest to the power source among the banks.
A power outage detection system comprising: When the power outage management means receives information indicating that the power outage has been detected from a plurality of watt-hour meters of a single bank on the same distribution line in an area other than the power outage section detected by the power distribution automation system and not during a construction power outage, the power outage management means issues a fault ticket to accept a bank fault.
The power failure detection system according to claim 1 . When the power outage management means receives information from a single watt-hour meter on the same distribution line in an area other than the outage section detected by the power distribution automation system and not during a construction outage, if the consumer's home in which the watt-hour meter is installed is under contract, it issues a fault ticket to accept an individual fault during the contract, and if the consumer's home in which the watt-hour meter is installed is not under contract, it issues a fault ticket to accept an individual fault during a non-contract.
The power failure detection system according to claim 1 or 2. An automated power distribution system that monitors the power distribution system and, when a power outage occurs, controls switches to distribute power to areas other than those affected by the outage.
A construction power outage storage means for storing construction power outage information including the scope and duration of the construction power outage;
A power meter is installed in each customer's home to measure the amount of power consumed and has the function of detecting power outages.
and when information indicating that a power outage has been detected from the watt-hour meters of a plurality of banks in the same distribution line in an area other than the power outage section detected by the power distribution automation system and not during a construction power outage is received, a power outage warning indicating identification information of the bank that is closest to the power source among the banks is output.
A power outage detection method comprising: When receiving information indicating that the power outage has been detected from a plurality of watt-hour meters of a single bank on the same distribution line in an area other than the outage section detected by the power distribution automation system and not during a construction outage, a fault ticket is issued to accept a bank fault.
5. The method of claim 4, wherein the power failure detection method is When information is received from a single watt-hour meter on the same distribution line that a power outage has been detected in an area other than the outage section detected by the power distribution automation system and not during a construction outage, if the customer's home in which the watt-hour meter is installed is under contract, a fault ticket is issued to accept individual faults during the contract, and if the customer's home in which the watt-hour meter is installed is not under contract, a fault ticket is issued to accept individual faults during non-contract.
6. The power failure detection method according to claim 4 or 5.