KR102529846B1 - Outage-management system of distribution line and method thereof - Google Patents

Abstract

Disclosed are distribution line power outage management systems and methods. In the distribution line power outage management system according to one aspect of the present invention, auxiliary power is supplied for a certain period of time when the main power is turned off, detects the power on/off state from the watt-hour meter installed in the consumer, determines whether a power outage has occurred, and determines whether or not a power outage has occurred, A watt-hour meter modem that generates a power failure signal or a power recovery signal according to the watt-hour meter modem, a data concentrator that transmits the power failure signal or a power recovery signal to a server upon reception of the power failure signal or a power recovery signal from the watt-hour meter modem, and a power failure signal from the watt-hour meter modem or the data concentrator or a server that receives a power recovery signal, manages modem outage information in association with GIS information, and predicts a failure of a power distribution facility based on the modem outage information.

Description

Distribution line outage management system and method {OUTAGE-MANAGEMENT SYSTEM OF DISTRIBUTION LINE AND METHOD THEREOF}

The present invention relates to a system and method for managing power outages in distribution lines, and more particularly, by monitoring the power of a watt-hour meter or DCU to recognize power outages and restorations, and to secure power for power outage signal transmission through a super-capacitor. It relates to a power outage management system and method for distribution lines.

In general, a distribution automation system (Distributive on Automation System, DAS) is to install sensors that can be remotely monitored and automated switches that can be remotely operated in various parts of distribution lines to automate the distribution system for stable power supply, and to install them in a central control room. It refers to a system that is remotely monitored and operated by a computer.

Distribution line outage management is performed using a distribution automation system (DAS: Distribution Automation System). The distribution automation system utilizes computer and communication technology to remotely operate switchgear for distribution lines that are scattered far away from the office without going to the site, automatically find faulty sections, and automatically collect line operation information such as voltage and current. It is a system that

As shown in FIG. 1, the distribution automation system has a structure in which a substation 10 is connected in parallel to a central control device through, for example, a communication line, and a distribution line from the substation 10 is sequentially connected to a switch 20 in series. It is done. In addition, a switchgear controller for controlling and monitoring each switchgear 20 and a distribution control terminal connected to the switchgear controller to remotely monitor and control accidents and distribution information of the distribution system are installed, and the substation (10 ) is connected in parallel to the distribution control terminal, and a plurality of switches, switch controllers, and distribution control terminals are connected to the substation in the same way as the substation 10.

Since the introduction of the distribution automation system, there have been many achievements such as reducing the power outage time per house from tens of minutes to less than 10 minutes. There is a limit to the management of single-phase high-voltage lines, low-voltage failures of transformer units, and low-voltage customer-level power outages. am.

The background art of the present invention is disclosed in Korean Patent Publication No. 10-2017-0112465 (published 20171012, Disaster Monitoring Apparatus and Method in Intelligent Remote Meter Reading System).

The present invention has been made to improve the above problems, and an object of the present invention is to monitor the power of a watt-hour meter or DCU to recognize power failure and recovery, and to supply power for power failure signal transmission through a super-capacitor. It is to provide a power outage management system and method for distribution lines that can be secured.

Another object of the present invention is to provide a distribution line outage management system and method that manages modem outage information in association with GIS information and predicts a failure of a distribution facility based on the modem outage information.

The problem to be solved by the present invention is not limited to the above-mentioned problem (s), and another problem (s) not mentioned will be clearly understood by those skilled in the art from the following description.

In the distribution line power outage management system according to one aspect of the present invention, auxiliary power is supplied for a certain period of time when the main power is turned off, detects the power on/off state from the watt-hour meter installed in the consumer, determines whether a power outage has occurred, and determines whether or not a power outage has occurred, A watt-hour meter modem that generates a power failure signal or a power recovery signal according to the watt-hour meter modem, a data concentrator that transmits the power failure signal or a power recovery signal to a server upon reception of the power failure signal or a power recovery signal from the watt-hour meter modem, and a power failure signal from the watt-hour meter modem or the data concentrator or a server that receives a power recovery signal, manages modem outage information in association with GIS information, and predicts a failure of a power distribution facility based on the modem outage information.

In the present invention, the watt-hour meter modem includes a communication unit for communicating with the data concentrator or the server, a storage unit for storing meter reading data received from the watt-hour meter, a main power supply unit receiving power from the watt-hour meter, and a main power supply unit from the main power unit. An auxiliary power unit that is charged by the applied power and supplies the charged power when the main power unit fails, detects DC power supplied to the main power unit from the watt-hour meter to detect the power on/off state of the main power unit, A power state detection unit for transmitting the detected power on/off state to a control unit, and when detecting power off of the main power supply unit, drive by the power of the auxiliary power supply unit to generate a power outage signal, and restore power after the power outage signal is generated. When a power failure does not occur for a predetermined period of time, a control unit generating a recovery signal may be included.

In the present invention, the communication unit may include at least one of a first communication unit for wired communication with the data concentrator and a second communication unit for wireless communication with the server.

In the present invention, the auxiliary power supply unit may be a super capacitor.

In the present invention, the power outage signal may include at least one of customer information, a location where a current power outage occurs, and a power outage time.

In the present invention, the data concentrator includes a communication unit for communication with the watt-hour meter or the server, a storage unit for storing meter reading data received from the watt-hour meter, a main power supply unit that converts external alternating current into direct current and supplies it, and the main power supply unit. It is charged by power applied from the main power source, and detects the power on/off state of the main power source by detecting an auxiliary power source that supplies the charged power when the main power source fails, and DC power supplied to the main power source. A power state detection unit that transmits the detected power on/off state to the control unit, and when the main power unit detects power off, it is driven by the power of the auxiliary power unit to generate a power outage signal, and a power failure signal is generated, and then power is restored. In this case, a control unit generating a recovery signal when power failure does not occur for a predetermined period of time may be included.

In the present invention, the auxiliary power supply unit may be a super capacitor.

In the present invention, the server, when receiving a power outage signal through a communication unit for communication with the watt-hour meter or the data concentrator, a database in which distribution-related facility information and customer information are stored, and the communication unit link modem outage information with GIS information to form a map. It may include a modem outage management unit displayed in , and a failure prediction unit that predicts a cause of failure by combining the modem outage information and facility information of the corresponding customer.

The present invention may further include a notification unit for notifying a customer and an operator of notification information including location information and occurrence time when the power failure signal is received.

A power outage management method according to an aspect of the present invention includes detecting, by a modem, DC power supplied to a main power supply unit to detect a power on/off state of the main power supply unit, when detecting power off of the main power supply unit, the Generating a power failure signal by driving the modem by the power of the auxiliary power supply unit, determining whether power restoration is maintained without power failure for a predetermined period of time, when power recovery occurs after the power failure signal is generated, and and generating, by the modem, a recovery signal when power failure does not occur and power restoration is maintained for the predetermined time.

The present invention may further include receiving the power failure signal and displaying modem power failure information on a map in association with GIS information.

The present invention may further include the server predicting a cause of failure by combining the modem outage information and the facility information of the corresponding customer.

In addition to this, other methods for implementing the present invention, other systems, and computer programs for executing the methods may be further provided.

The system and method for managing power outages in distribution lines according to an embodiment of the present invention can monitor the power of a watt-hour meter or DCU to recognize power outages and restore power, and secure power for power outage signal transmission through a super-capacitor. there is.

A distribution line outage management system and method according to another embodiment of the present invention manages modem outage information in association with GIS information and predicts a failure of a distribution facility based on the modem outage information. It is possible to minimize power failure recovery time and power failure damage by managing power failure, high-tension line disconnection failure, transformer failure, incoming line failure, and customer-level power failure.

On the other hand, the effects of the present invention are not limited to the effects mentioned above, and various effects may be included within a range apparent to those skilled in the art from the contents to be described below.

1 is a diagram for explaining a power distribution automation system.
2 is a diagram for explaining a power outage management system for distribution lines according to an embodiment of the present invention.
3 is a block diagram schematically showing the configuration of a power meter modem according to an embodiment of the present invention.
4 is an exemplary diagram for explaining a method of generating a recovery signal after a power failure occurs according to an embodiment of the present invention.
5 is a block diagram schematically showing the configuration of an AMI server according to an embodiment of the present invention.
6 is an exemplary view showing modem outage information on a map according to an embodiment of the present invention.
7 is an exemplary diagram in which detailed blackout customers and blackout times are displayed on a map according to an embodiment of the present invention.
8 is a flowchart illustrating a method for managing power failure of a modem according to an embodiment of the present invention.

Hereinafter, a line constant calculation automation system and method of a power transmission line according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description.

Further, implementations described herein may be implemented in, for example, a method or process, an apparatus, a software program, a data stream, or a signal. Even if discussed only in the context of a single form of implementation (eg, discussed only as a method), the implementation of features discussed may also be implemented in other forms (eg, an apparatus or program). The device may be implemented in suitable hardware, software and firmware. The method may be implemented in an apparatus such as a processor, which is generally referred to as a processing device including, for example, a computer, microprocessor, integrated circuit, programmable logic device, or the like. Processors also include communication devices such as computers, cell phones, personal digital assistants ("PDAs") and other devices that facilitate communication of information between end-users.

In addition, terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded. Terms such as first and second may be used to describe various components, but components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same or corresponding components are assigned the same reference numerals, and overlapping descriptions thereof are omitted. I'm going to do it.

2 is a diagram for explaining a power outage management system for distribution lines according to an embodiment of the present invention.

Referring to FIG. 2 , the distribution line blackout management system according to an embodiment of the present invention includes a watt-hour meter 100 that generates meter reading data, a watt-hour meter modem 200 that communicates with the meter 100 and receives meter reading data, A data concentrator 300 that collects meter reading data by communicating with the watt-hour meter modem 200, and an advanced metering infrastructure (AMI) server 400 that receives and manages meter reading data by communicating with the data concentrator 300 can include

The watt-hour meter 100 is installed at a consumer and detects the amount of power consumed by the consumer. That is, the watt-hour meter 100 performs an automatic meter reading function by receiving AC power from the power line. At this time, the watt-hour meter 100 converts AC power input from the power line into DC power to supply DC power necessary for driving the modem for communication.

The power system modem supplies the power stored in the auxiliary power supply unit 240 as internal driving power even if power supply is cut off due to a power outage during operation. However, in a non-power failure state, the external power source (eg AC power source) is converted into a voltage level corresponding to the driving power source and used.

The watt-hour meter modem 200 detects the power on/off state from the watt-hour meter 100 installed in the consumer by supplying auxiliary power for a certain period of time when the main power is turned off, and determines whether a power outage has occurred, and depending on the determination result, a power outage signal or power restoration signal is generated. That is, the watt-hour meter modem 200 detects whether power is supplied from the watt-hour meter 100, determines whether a power failure has occurred, and generates a power failure signal or a power recovery signal according to the determination result. The watt-hour meter modem 200 is a device that performs power failure detection and communication functions. When power is not supplied from the watt-hour meter 100 for a certain period of time or longer due to a power supply interruption through the power line, it is driven using auxiliary power and is in a power-off state. (ie, a power failure state) is transmitted to the data concentrator 300 or the AMI server 400. Here, the power outage signal may include a current power outage location and a power outage time.

In addition, the watt-hour meter modem 200 has power failure/restoration detection time, period report, low voltage level setting, power failure detection transmission count, telephone number and customer number remote/area setting functions in the built-in storage 220, When a power outage occurs, this set information is transmitted to the data concentrator 300 or the AMI server 400 together with the power outage information so that the operator can conveniently and quickly find the location of the power outage based on the distribution GIS. In this way, the watt-hour meter modem 200 performing the blackout detection function embeds information such as telephone number and customer number, and transmits this information together to the AMI server 400 when a power outage occurs, thereby detecting power line outages in conjunction with distribution GIS information. By making it easy to determine the location, it is possible to expeditiously cope with power outage accidents, and there is an effect of facilitating recovery by the operator.

The Data Concentration Unit (DCU, 300) transmits a request signal for meter reading data to the watt-hour meter modem 200, collects meter reading data from the watt-hour meter modem 200, and sends the collected meter reading data to the AMI server 400. send. At this time, the data concentrator 300 may include a DCU modem 350 to transmit/receive data with the plurality of watt-hour meter modems 200. The data concentrator 300 transmits and receives data with the watt-hour meter modem 200 through a communication method such as high-speed PLC (Power Line Communication).

The data concentrator 300 may receive a power failure signal or recovery signal from the watt-hour meter modem 200 and transmit the power failure signal or recovery signal to the AMI server 400 .

The AMI server 400 receives a power outage signal or a power recovery signal from the watt-hour meter modem 200 or the data concentrator 300, manages the modem outage information in association with GIS information, and detects failures of power distribution facilities based on the modem outage information. can predict

3 is a block diagram schematically showing the configuration of a power meter modem 200 according to an embodiment of the present invention, and FIG. 4 is an example for explaining a method for generating a recovery signal after a power outage occurs according to an embodiment of the present invention. It is also

Referring to FIG. 3 , the watt-hour meter modem 200 according to an embodiment of the present invention includes a communication unit 210, a storage unit 220, a main power supply unit 230, an auxiliary power supply unit 240, and a power state detection unit 250. And it may include a control unit 260.

The communication unit 210 may perform communication with the data concentrator 300 or the AMI server 400 .

The AMI communication configuration may include a DCU method and a wireless communication network (mobile communication network) method. The wireless communication network method is a method of transmitting from the watt-hour meter modem 200 to the AMI server 400 through the network of a telecommunication company, and the DCU method collects the metering information of several watt-hour meters in the DCU first, and then collects the AMI server (400) through the network of the telecommunication company. ).

Therefore, in the case of a wireless communication network method, the communication unit 210 may perform a role of transmitting and receiving data with the AMI server 400 through a wireless communication network. In addition, in the case of the DCU method, the communication unit 210 may perform a role of transmitting and receiving data through the data concentrator 300 and the PLC.

The communication unit 210, under the control of the control unit 260, when a power outage is detected, power restoration is detected, or power usage exceeds a predetermined (or normal) usage amount by a specified margin or more, the communication unit 210 provides corresponding state information. Pre-designated users and related organizations can be notified. At this time, the related organization may include the AMI server 400, and other than that, users (ie, customers), power supply institutions (eg, KEPCO), social workers, electricity/safety personnel, and police stations may be included.

The storage unit 220 may store meter reading data received from the watt-hour meter 100 . In addition, the storage unit 220 may store telephone number and customer number. In addition, the storage unit 220 provides user and related organization information for notifying the corresponding state information when power failure is detected, power restoration is detected, or power usage exceeds a predetermined (or normal) usage by a specified margin or more. (e.g. contacts) can be saved.

The main power unit 230 may receive power from the watt-hour meter 100 . The main power supply unit 230 receives power for driving the watt-hour meter modem 200 from the watt-hour meter 100 . At this time, the main power supply unit 230 may change the voltage of the DC power through a DC-DC converter and supply it to each component of the watt-hour meter modem 200. The main power supply unit 230 converts power (eg, AC power) supplied from the outside into DC power suitable for driving power and supplies it to the inside.

The auxiliary power supply unit 240 may charge the supercapacitor using power converted from the main power supply unit 230 and supplied, and supply driving power to the internal components of the modem including the control unit 260 in a power failure state. The auxiliary power supply unit 240 may include a super capacitor or a battery.

The power state detection unit 250 may detect DC power supplied from the watt-hour meter 100 to the main power unit 230 to detect the power on/off state of the watt-hour meter 100. The power state detector 250 may transmit the detected power on/off state to the controller 260 . That is, the power state detection unit 250 detects whether current is supplied from the main power supply unit 230, and when power supply is cut off, it can detect this and transmit a power outage occurrence signal to the control unit 260.

The control unit 260 may process signals detected according to the power on/off state received from the power state detection unit 250 and manage main functions related to power failure detection. The control unit 260 may simultaneously perform a communication function of receiving a power on/off signal and transmitting it to the data concentrator 300 or the AMI server 400. At this time, the control unit 260 manages the watt-hour meter 100 with the customer number and manages the distribution pole with the pole number. To this end, the watt-hour meter modem 200 may include a storage unit 220 that stores set values including each customer number and telephone number.

The control unit 260 stores meter reading data transmitted from the watt-hour meter 100 in the storage unit 220, and upon receiving a power failure occurrence signal from the power failure detection unit 250, supplies power from the auxiliary power supply unit 240 to the remaining components. can As such, when a power outage occurs, the watt-hour meter modem 200 according to the present invention supplies charging power from the auxiliary power supply unit 240 to each element therein, and then normally stops the operation of each element. Accordingly, it is possible to prevent damage to devices due to sudden power failure or loss of stored data.

The control unit 260 detects whether the external power is re-supplied (ie, restored) while being driven by the power supplied from the auxiliary power supply unit 240 after the external power is out of power. When power restoration is detected, the control unit 260 may notify corresponding state information to pre-designated users and related organizations through the communication unit 210 .

The control unit 260 generates a power outage signal by being driven by the power of the auxiliary power unit 240 when detecting the power off of the main power unit 230, and when power is restored after the power outage signal occurs, the power failure does not occur for a predetermined period of time. In this case, the recovery signal may be transmitted to the data concentrator 300 or the AMI server 400 through the communication unit 210.

On the other hand, distribution lines operate reclose circuit breakers to shorten power outage time. More than 80% of simple failures such as contact with foreign objects are automatically recovered through re-closing operation. The circuit breaker mechanism performs reclosing up to three times based on the recloser, and in the event of a power failure after operating three times, the watt-hour meter modem 200 must generate signals for four power failures and three power recovery times.

The Super Capacitor used in the auxiliary power unit 240 has a simple and inexpensive structure compared to batteries, but the power supply time is short in case of power failure, so when transmitting frequent power failure/recovery signals continuously, the charging power is discharged, which is the most important last power failure information Transmission may be missed. Accordingly, the control unit 260 may generate a recovery signal when power failure does not occur for a predetermined period of time when power restoration occurs after power failure signal is generated.

A method of generating a recovery signal after a power failure will be described with reference to FIG. 4 . As shown in ② of FIG. 4 , in case of a power failure of power supplied from the watt-hour meter 100 to the watt-hour meter modem 200, the control unit 260 may generate a power failure signal, and if the power recovery signal does not occur, it is reclosed. Even if a power failure occurs as in ④ and ⑥, the power failure signal may not be transmitted. In addition, when power supplied from the watt-hour meter 100 to the watt-hour meter modem 200 is not interrupted for several seconds to several minutes after power is restored, the control unit 260 may transmit a power recovery signal.

As described above, after one power failure signal occurred in step ②, power restoration occurred in step ③, but the power recovery signal did not occur because it could not maintain several seconds or minutes, and additional power failures occurred in steps ④ and ⑥ because the power recovery signal was not generated. Even if this occurs, the watt-hour meter modem 200 does not transmit a power outage signal separately, so it is possible to prevent consumption of charging power to the capacitor and omission of the power outage signal due to unnecessary provision of power outage information.

The control unit 260 is a component that controls the operation of various components of the watt-hour meter modem 200, and may include at least one arithmetic unit, wherein the arithmetic unit is a general-purpose central processing unit (CPU), for a specific purpose. It may be a suitably implemented programmable device element (CPLD, FPGA), application specific integrated circuit (ASIC) or microcontroller chip.

Meanwhile, in this embodiment, only the watt-hour meter modem 200 has been described, but the DCU modem 350 may also include an auxiliary power supply unit 240 as in the watt-hour meter modem 200, and when power recovery occurs after a power outage signal occurs, a device A recovery signal can be transmitted only when power failure does not occur for a set period of time.

5 is a block diagram schematically showing the configuration of an AMI server according to an embodiment of the present invention, FIG. 6 is an exemplary view showing modem outage information on a map according to an embodiment of the present invention, and FIG. It is an exemplary view in which detailed blackout customers and blackout times are displayed on a map according to an embodiment.

Referring to FIG. 5, the AMI server 400 according to an embodiment of the present invention includes a communication unit 410, a database 420, a modem outage management unit 430, a failure prediction unit 440, and a notification unit 450. And it may include a control unit 460.

The communication unit 410 may communicate with the watt-hour meter or the data concentrator 300 .

The database 420 may store distribution line facility information and customer information.

When receiving a power outage signal through the communication unit 410, the modem outage management unit 430 may display modem outage information on a map in association with GIS information.

The modem outage management unit 430 connects modem outage information with GIS, identifies substation failures, distribution line failures, and customer-level blackouts, and can express the location of the power outage location on a map, and can check detailed power outage details. For example, as shown in FIG. 6 , the modem power outage management unit 430 may determine the number of power outages within a management area (500M×500M) and provide power outage information in color to a map. If the user wants to know detailed power failure details, the user can click a colored square. Then, the modem outage management unit 430 may display detailed outage customers and outage time as shown in FIG. 7 .

The modem outage management unit 430 may manage power outage information per customer. In other words, while managing a large number of customers, there are customers who are particularly sensitive to power outages. For example, customers using life support devices, raw fish restaurants, and fish farms are expected to suffer damage due to power outages. Current distribution automation systems are effective in identifying outages of a certain scale or higher, but have limitations in providing customized services to these customers. Therefore, if the modem outage signal is used, it is possible to determine in real time whether the customer has a power outage or not, and in connection with the SMS server 400, it is possible to promptly recover from a power outage and minimize power outage damage by providing information to the customer and the power company in real time. there is.

The failure prediction unit 440 may predict the cause of the failure by combining the modem outage information and the facility information of the corresponding customer.

Facility information and customer information may be linked as shown in Table 1 below.

The failure prediction unit 440 can predict a failure as shown in Table 2 below by combining equipment for each customer with a power outage while constantly monitoring the status of modem outage information.

Referring to Table 2, as in Case 1, when a blackout occurs in some customers among several transformers, the failure prediction unit 440 may estimate that the high-voltage line is disconnected. In addition, as in Case 5, when a power outage occurs in only some customers among all customers of the transformer, the failure prediction unit 440 may determine that only one out of three transformers is out of order.

Upon reception of a power outage signal, the notification unit 450 may notify customers and operators of notification information including location information and occurrence time of power outage. At this time, the notification unit 450 may notify power failure occurrence information using a text message or the like.

Meanwhile, the modem outage management unit 430, the failure prediction unit 440, and the notification unit 450 may each be implemented by a processor required to execute a program on a computing device. As such, the modem outage management unit 430, the failure prediction unit 440, and the notification unit 450 may be implemented as physically independent components or functionally separated within one processor. .

The control unit 460 includes various components of the AMI server 400 including a communication unit 410, a database 420, a modem outage management unit 430, a failure prediction unit 440, a notification unit 450 and a control unit 460. A configuration for controlling the operation of the units, which may include at least one arithmetic unit, wherein the arithmetic unit is a general-purpose central processing unit (CPU), a programmable device element (CPLD, FPGA) implemented to suit a specific purpose, It can be an application specific integrated circuit (ASIC) or microcontroller chip.

8 is a flowchart illustrating a method for managing power failure of a modem according to an embodiment of the present invention.

Referring to FIG. 8 , the power state detection unit 250 detects the power supply state of the main power supply unit 230 (S810) and determines whether the power supply is off (power outage) state (S820). That is, the power state detection unit 250 may detect the power on/off state of the watt-hour meter 100 by detecting DC power supplied from the watt-hour meter 100 to the main power supply unit 230.

As a result of the determination in step S820, if the power supply is off, the controller 260 transmits a power outage signal to the data concentrator 300 or the AMI server 400 (S830).

When step S830 is performed, the control unit 260 determines whether restoration has occurred (S840). That is, when a power outage is detected, the control unit 260 may detect whether external power is re-supplied (ie, restored) while being driven by the power supplied from the auxiliary power supply unit 240 . At this time, the control unit 260 may generate a power failure signal at the first power failure, and may not transmit a power failure signal even if a power failure occurs due to reclosing when a power recovery signal is not generated. In addition, when power is not interrupted for several seconds to several minutes after power is restored, the control unit 260 may transmit a recovery signal.

When restoration occurs as a result of the determination in step S840, the controller 260 determines whether power failure has not occurred for a predetermined period of time (S850). After the power failure signal is generated, power restoration occurs, but if the power restoration does not maintain a predetermined predetermined time (several seconds to several minutes), the control unit 260 may not generate a power recovery signal. As such, if power restoration is not maintained for a certain period of time, the power recovery signal is not generated, so even if an additional power failure occurs, the watt-hour meter modem 200 does not transmit a power failure signal separately, thereby reducing the consumption of capacitor charging power and omission of the power failure signal due to the provision of unnecessary power failure information. It can be prevented.

As a result of the determination in step S850, if power failure does not occur for a predetermined time, the control unit 260 transmits a recovery signal (S860).

As described above, the distribution line outage management system and method according to an embodiment of the present invention monitors the power of the watt-hour meter 100 or the DCU to recognize power failure and restoration, and transmits a power outage signal through a super-capacitor. can secure power for

A distribution line outage management system and method according to another embodiment of the present invention manages modem outage information in association with GIS information and predicts a failure of a distribution facility based on the modem outage information. It is possible to minimize power failure recovery time and power failure damage by managing power failure, high-tension line disconnection failure, transformer failure, incoming line failure, and customer-level power failure.

The present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and those skilled in the art can make various modifications and equivalent other embodiments. will understand Therefore, the true technical protection scope of the present invention should be determined by the claims below.

100: power meter
200: power meter modem
210, 410: communication department
220: storage unit
230: main power unit
240: auxiliary power unit
250: power state detection unit
260, 460: control unit
300: data concentrator
350: DSU modem
400: AMI server
420: database
430: modem outage management unit
440: failure prediction unit
450: notification unit

Claims (12)

A watt-hour meter modem that supplies auxiliary power for a certain period of time when the main power is turned off, detects the power on/off state from the watt-hour meter installed in the consumer, determines whether a power failure has occurred, and generates a power failure signal or a recovery signal according to the determination result;
a data concentrator for transmitting the power failure signal or restoration signal to a server when receiving the power failure signal or restoration signal from the watt-hour meter modem; and
A server that receives a power outage signal or power recovery signal from the watt-hour meter modem or the data concentrator, manages modem outage information in association with GIS information, and predicts failure of distribution facilities based on the modem outage information,
The server,
Each customer's facility information and customer information are linked and managed, and the status of modem outage information is monitored at all times, and the failure of the distribution facility is predicted by combining facilities for each customer with power outage.
The server predicts a failure due to disconnection of a high voltage cable in a specific distribution line when a power failure occurs in a customer of phase A among a specific distribution line in a specific substation, and predicts a failure as a total blackout of the transformer in a specific distribution line when a power failure occurs in all customers of transformers in a specific distribution line in a specific substation. When a power outage occurs to customers who receive power from some transformers in a specific distribution line, failure is predicted due to a power outage in some high-voltage sections of a specific distribution line, and when a power outage occurs for only some customers out of all customers Distribution line outage management system characterized by predicting failures due to power outages of customers' transformers.
According to claim 1,
The watt-hour meter modem,
a communication unit for communication with the data concentrator or the server;
a storage unit to store meter reading data received from the watt-hour meter;
a main power unit receiving power from the watt-hour meter;
an auxiliary power supply unit charged by power supplied from the main power supply unit and supplying the charged power when the main power supply unit fails;
a power state detector detecting DC power supplied from the watt-hour meter to the main power supply unit, detecting a power on/off state of the main power supply unit, and transmitting the detected power on/off state to a control unit; and
When the power of the main power unit detects power off, the controller is driven by the power of the auxiliary power unit to generate a power failure signal, and generates a power failure signal when power failure does not occur for a predetermined period of time when power failure occurs after the power failure signal occurs. Distribution line outage management system comprising a.
According to claim 2,
The communication department,
The distribution line power outage management system comprising at least one of a first communication unit for wired communication with the data concentrator and a second communication unit for wireless communication with the server.
According to claim 2,
The auxiliary power unit,
Distribution line outage management system, characterized in that the supercapacitor.
According to claim 2,
The power outage signal,
A distribution line power outage management system comprising at least one of customer information, a location where a current power outage occurs, and a power outage time.
According to claim 1,
The data concentrator,
a communication unit for communication with the watt-hour meter or the server;
a storage unit to store meter reading data received from the watt-hour meter;
Main power unit for converting external alternating current into direct current and supplying it;
an auxiliary power supply unit charged by power supplied from the main power supply unit and supplying the charged power when the main power supply unit fails;
a power state detection unit for detecting DC power supplied to the main power supply unit, detecting a power on/off state of the main power supply unit, and transmitting the detected power on/off state to a control unit; and
When the power of the main power unit detects power off, the controller is driven by the power of the auxiliary power unit to generate a power failure signal, and generates a power failure signal when power failure does not occur for a predetermined period of time when power failure occurs after the power failure signal occurs. Distribution line outage management system comprising a.
According to claim 6,
The auxiliary power unit,
Distribution line outage management system, characterized in that the supercapacitor.
According to claim 1,
The server,
a communication unit for communicating with the watt-hour meter or the data concentrator;
A database in which distribution-related facility information and customer information are stored;
a modem outage management unit that displays modem outage information on a map in association with GIS information when a power outage signal is received through the communication unit; and
A distribution line outage management system comprising a failure prediction unit that predicts a cause of failure by combining the modem outage information and the customer's facility information.
According to claim 8,
The distribution line power outage management system further comprising a notification unit for notifying customers and operators of notification information including location information and occurrence time when the power failure signal is received.
detecting, by a modem, DC power supplied to the main power supply unit to detect a power on/off state of the main power supply unit;
generating a power outage signal by driving the modem by the power of the auxiliary power unit when detecting power off of the main power unit;
determining, by the modem, whether power restoration is maintained without power failure occurring for a predetermined period of time when power restoration occurs after the power failure signal is generated; and
generating, by the modem, a recovery signal when power restoration is maintained without power failure occurring for the predetermined time;
a server receiving the power outage signal and displaying modem power outage information on a map in association with GIS information; and
The server further comprises predicting a cause of failure by combining the modem outage information and the facility information of the corresponding customer,
In the step of predicting the cause of the failure,
The server predicts a failure due to disconnection of a high voltage cable in a specific distribution line when a power failure occurs in a customer of phase A among a specific distribution line in a specific substation, and predicts a failure as a total blackout of a specific distribution line transformer when a power outage occurs in all customers of a specific distribution line transformer in a specific substation When a power outage occurs to customers who receive power from some transformers in a specific distribution line, failure is predicted due to a power outage in some high-voltage sections of a specific distribution line, and when a power outage occurs for only some customers out of all customers Distribution line outage management method characterized by predicting failures due to power outages of customers' transformers.
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