JP2008109735A - Transfer trip system for distributed power supply - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transfer trip system for a distributed power supply, which is not required to be connected to a power distribution automating system. <P>SOLUTION: The transfer trip system 1 for the distributed power supply has a configuration in which a transfer trip signal transmitter 2, a console box 3, a substation information providing device 4, a PLC modem 5, a transfer trip device 6 and a distributed power supply 7 are connected via a network 8. The transmitter 2 acquires information about power distribution lines CB/Ry from the providing device 4, and acquires information about a power distribution system from the console box 3. Then, the system recognizes a distributed power supply 7 as a target of transfer trip by tripping the power distribution line CB and the occurrence of power failure section on the basis of information about power distribution lines and sections, and stores the recognized power supply into a storage. If an accident occurs in a power distribution system, a transfer trip signal is transmitted to the transfer trip device 6 connected to the distributed power supply 7 as a target of transfer trip stored in the storage. The console box 3 is used to update the information about power distribution system of the transmitter 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention cuts off power transmission from a distribution substation when an accident such as a ground fault occurs in a distribution system under a substation where a large number of distributed power sources such as solar power generation devices are arranged in parallel. The present invention relates to a distributed power supply transfer cut-off system in which a distributed power supply is disconnected from the distribution system by transfer cut-off.

The applicant of the present application has already described a distributed power supply transfer cutoff system that can suppress the distributed power source to be disconnected when an accident occurs in the distribution system according to the system state at that time. An application has been filed (see Patent Document 1). In that system, the transfer cut-off signal transmission device periodically distributes power distribution system information (distributed power supply position information, pole opening / closing) from a power distribution automation system that manages the state of the power distribution system (in Patent Document 1, such as a sales office database). Device information), and automatically recognize and store the distributed power source that is subject to transfer interruption in the event of an accident. When a system fault occurs, a single transfer type power supply is provided by sending a transfer cut-off signal to the transfer cut-off devices with PLC modems connected to all the distributed type power supplies stored as transfer cut-off targets. It is a mechanism to prevent driving.
JP 2005-198446 A

  However, in the distributed power transfer interruption system of Patent Document 1, since it is necessary to construct a communication interface between the transfer interruption signal transmission device and the distribution automation system, the spread of the distributed power transfer interruption system to other companies is widespread. May be disturbed.

  The present invention has been made in view of the above problems, and a main object of the present invention is to provide a distributed power transfer interruption system that does not need to be connected to a distribution automation system.

  In order to solve the above-mentioned problem, the present invention receives power from a substation and interrupts power transmission from the substation when an accident occurs in a distribution system connecting a distributed power source. A distributed power transfer interruption system for disconnecting power from a power distribution system by remote control using a transfer interruption signal, wherein a transfer interruption signal transmission device for transmitting the transfer interruption signal includes at least a feeder and a feeder. A storage unit that preliminarily stores power distribution system information including information specifying a section of a distribution line to be connected, a distributed power source connected to the section, and a transfer cutoff device that cuts off the distributed power source, and the power distribution system In the event of an accident, the distribution system information stored in the storage unit is referred to identify the distributed power source connected to the section of the power distribution line that has failed. Characterized in that it comprises a processing unit for sending the transfer trip signal to the transfer trip device that performs the blocking.

  According to this configuration, since it is not necessary to connect the transfer interruption signal transmission device to a distribution automation system that distributes distribution system information in real time, the distribution automation system is different from a power company or a non-power industry that does not have a distribution automation system. It is also possible to easily introduce and disseminate systems to companies. In particular, since there is no change in the connection configuration for the upper system unrelated to the distribution automation system, the system information once set can be sufficiently handled.

Further, the present invention is a distributed power transfer cutoff system, comprising a console box connected to the transfer cutoff signal transmission device, the console box acquires the power distribution system information from the outside, the acquired A power distribution system information update unit is provided that transmits power distribution system information to the transfer cutoff signal transmission device.
According to this configuration, the distribution system information in the transfer cutoff signal transmission device can be updated using the console box as necessary. Also, since GPIB is used, the transfer cutoff signal transmission device and the console box can be easily connected.

The present invention is also a distributed power transfer interruption system, wherein the console box acquires failure information of the transfer interruption signal transmission device from the transfer interruption signal transmission device, the transfer interruption device and the distribution A maintenance unit is provided that acquires failure information of the transfer cutoff device and the distributed power source from the type power supply via the transfer cutoff signal transmission device, and displays the acquired failure information on a display unit.
According to this configuration, maintenance of the transfer cutoff signal transmission device, the transfer cutoff device, and the distributed power source can be performed with reference to the displayed failure information.

Further, the present invention is a distributed power transfer cutoff system, wherein the console box acquires the status of the distributed power source from the distributed power source via the transfer cutoff signal transmission device, and acquires the distributed type Displaying the state of the power supply and the change of the state on the connection configuration of the power distribution system on the display unit, and the distributed type according to the operation of the light pen with respect to the distributed power source displayed on the display unit A distributed power management unit that transmits a power on / off control signal to the distributed power via the transfer cutoff signal transmission device is provided.
According to this configuration, the distributed power supply can be monitored online with reference to the displayed connection configuration of the distribution system and the state of the distributed power supply. In addition, the distributed power supply can be turned on and off remotely. Furthermore, future operation can be examined with reference to the state change of the distributed power source.

  In addition, other problems disclosed in the present application and solutions thereof will be clarified by the column of the best mode for carrying out the invention and the drawings.

  ADVANTAGE OF THE INVENTION According to this invention, the transfer interruption | blocking system for distributed power supplies which does not need to connect with a distribution automation system can be provided. According to this, electric power companies having different power distribution automation systems can be used without modifying the distributed power transfer interruption system, and therefore the introduction of the system can be promoted. In addition, the system can be spread to companies outside the power industry that do not have a distribution automation system.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. The distributed power supply transfer cut-off system according to the embodiment of the present invention receives power transmission from a substation and cuts off power transmission from the substation when an accident occurs in a distribution system connected to the distributed power supply. The distributed power supply is disconnected from the power distribution system by remote control using a transfer cut-off signal, and the transfer cut-off signal transmission device generates an accident in the power distribution system based on preset power distribution system information. A transmission interruption signal is transmitted to a distributed power source that is sometimes recognized as a transfer interruption target.

≪System configuration and overview≫
FIG. 1 is a diagram showing a configuration of a distributed power transfer cutoff system 1. The distributed power transfer interruption system 1 includes a transfer interruption signal transmission device 2, a console box 3, a substation information providing device 4, a PLC (Power Line Communication) modem 5, a transfer interruption device with a PLC modem (hereinafter referred to as a transfer). 6) and a distributed power source 7 are connected via a network 8. The PLC modem 5, the transfer blocking device 6 and the distributed power source 7 are generic names of the PLC modems 5A and 5B, the transfer blocking devices 6A and 6B, and the distributed power sources 7A and 7B, respectively.

  The transfer cut-off signal transmission device 2 is installed in a power company sales office and plays a central role in the distributed power transfer cut-off system 1. The console box 3 connected to the transfer interruption signal transmission device 2 updates the distribution system information of the transfer interruption signal transmission device 2, maintains the transfer interruption signal transmission device 2, the transfer interruption device 6, and the distributed power source 7, and the distributed type. Used to manage the power supply 7. The console box 3 is connected to the transfer cutoff signal transmission device 2 as necessary.

Specifically, the transfer interruption signal transmission device 2 acquires information on the CB (Circuit Breaker) and Ry (Relay: protection relay) of the distribution line from the substation information providing device 4 and distributes power from the console box 3. System information (distribution line information including a transmission source feeder of distribution lines, distribution line section information and power failure section information to which each distributed power source is connected) is acquired. In addition, the information regarding CB and Ry (hereinafter, referred to as CB / Ry information) is information indicating CB and Ry that are activated when an accident occurs. The transfer cutoff signal transmission device 2 acquires distribution line system information in advance and stores it in the storage unit. And when the accident of the distribution system occurred, CB / Ry information was acquired, and it was connected to the section of the power distribution line that failed due to the acquired CB / Ry information and the distribution system information stored in the storage unit. The substation information providing device 4 that identifies the distributed power supply 7 and sends a transfer cut-off signal to the transfer cut-off device 6 that cuts off the specified distributed power supply 7 is connected to the distribution lines CB and Ry at the substation. Connected and sends CB / Ry information directly to the transfer cutoff signal transmission device 2.

  When the distribution line is an overhead line, the PLC modem 5 is installed on a pillar, and performs communication by carrying a signal between the transfer cutoff signal transmission device 2 and the transfer cutoff device 6 on the power line or the like.

  The transfer interruption device 6 is connected to a system parallel switch (hereinafter referred to as a switch) of a distributed power source 7 installed in a customer's house. When the transfer cutoff device 6 receives the transfer cutoff signal sent from the transfer cutoff signal transmission device 2 installed in the business office, the transfer cutoff device 6 shuts off the switch. Thereafter, in response to the confirmation signal sent from the transfer cutoff signal transmission device 2, a response signal (answerback signal) indicating that the cutoff is completed is returned. Note that the switch is turned on again by the automatic parallel function of the distributed power source 7 itself. The transfer blocking device 6 also has a communication function based on TCP / IP (Transmission Control Protocol / Internet Protocol).

  The distributed power source 7 is a private power source such as a solar power generator or a wind power generator installed on the consumer side, and is connected to a power distribution system. When an accident occurs in the power distribution system, there is a concern that the accident may expand due to the distributed power source 7 being in a single operation state. As a countermeasure, it is effective to disconnect the distributed power source 7 from the distribution system by blocking transfer. Specifically, the distributed power source 7 is disconnected from the power distribution system by the transfer interrupting device 6 interrupting the switch of the distributed power source 7.

  The network 8 is a communication network that connects the transfer cutoff signal transmission device 2, the substation information providing device 4, and the PLC modem 5, and is realized by an IP (Internet Protocol) network such as a VPN (Virtual Private Network).

<< Device configuration >>
FIG. 2 is a diagram illustrating a configuration of the transfer cutoff signal transmission apparatus 2. The transfer cutoff signal transmission device 2 includes a host interface unit (processing unit) 21, a storage unit 22, a slave station interface unit (processing unit) 23, a storage unit 24, an alarm output unit 25, and an alarm display unit 26 as hardware.

  The upper interface unit 21 is connected to the console box 3 and the substation information providing device 4, acquires information from the console box 3 and the substation information providing device 4, updates the data in the storage unit 22 according to the acquired information, The slave station interface unit 23 is instructed to send a transfer cutoff signal to the transfer cutoff device 6, and the alarm output unit 25 is instructed to output an alarm to the alarm display unit 26. The storage unit 22 stores data from the higher-order interface unit 21 and reads the stored data.

  The slave station interface unit 23 transmits a transfer blocking signal to the transfer blocking device 6 in accordance with an instruction from the higher level interface unit 21, receives data related to the transfer blocking device 6 and the distributed power source 7, and passes it to the higher level interface unit 21. To do. The storage unit 24 stores data from the slave station interface unit 23 and reads the stored data.

  The alarm output unit 25 outputs an alarm to the alarm display unit 26 in accordance with an instruction from the upper interface unit 21. The alarm display unit 26 displays the received alarm in accordance with instructions from the alarm output unit 25. The alarm display unit 26 includes one or more LEDs (Light Emitting Diodes) and a part that controls light emission. Here, the alarm is, for example, an alarm regarding a failure detected by a health check.

  The upper interface unit 21, the slave station interface unit 23, and the alarm output unit 25 are realized by a CPU (Central Processing Unit). The storage unit 22 and the storage unit 24 are realized by a nonvolatile storage device such as a flash memory or a hard disk device.

  The host interface unit 21 includes a GPIB communication control unit 211, a substation communication control unit 212, a section state check unit 213, an alarm management unit 214, a main data management unit 215, and inter-CPU communication control units 216 and 217. The GPIB communication control unit 211 communicates with the console box 3 via the GPIB, and exchanges data (distribution system information, the state of the transfer interrupting device 6 and the distributed power supply 7) with the main data management unit 215. Do. The substation communication control unit 212 communicates with the substation information providing apparatus 4 in accordance with the TCP / IP communication procedure, and exchanges data (CB / Ry information, etc.) with the main data management unit 215. When the state of the distribution system changes, the section state check unit 213 includes distribution line information and section information (distribution system information) acquired from the console box 3, and distribution line information stored in the storage unit 22 at that time, and The section information is collated, and if the two sets of information do not match as a result of the collation, the fact is notified to the alarm management unit 214 and the main data management unit 215. Upon receiving the notification from the section state check unit 213, the alarm management unit 214 instructs the inter-CPU communication control unit 216 to notify the alarm output unit 25 of the alarm.

  The main data management unit 215 receives the distribution system information from the console box 3 and the CB / Ry information from the substation information providing device 4 and sends a transfer cut-off signal to the slave interface unit 23 to the inter-CPU communication control unit 217. Instruct the sending request. Further, the main data management unit 215 receives the notification from the section state check unit 213 and updates the distribution line information and section information stored in the storage unit 22 to the newly acquired distribution line information and section information. The inter-CPU communication control unit 216 notifies the alarm output unit 25 of an alarm according to an instruction from the alarm management unit 214. The inter-CPU communication control unit 217 requests the slave station interface unit 23 to transmit a transfer cutoff signal in accordance with an instruction from the main data management unit 215.

  The GPIB communication control unit 211, the substation communication control unit 212, the section state check unit 213, the alarm management unit 214, the main data management unit 215, and the inter-CPU communication control units 216 and 217 are stored in a predetermined memory. This is realized by executing the program.

  The storage unit 22 stores main data 221, substation information 222, and alarm information 223 as data. The main data 221 is data (distribution system information) related to the distribution system acquired from the console box 3, and includes distribution line information and section information. Details will be described later. The substation information 222 is CB / Ry information acquired from the substation information providing apparatus 4. The alarm information 223 is a section information collation result by the section state check unit 213 and an alarm to be output according to the collation result.

  The slave station interface unit 23 includes an inter-CPU communication control unit 231, a transfer cutoff control unit 232, and a slave station communication control unit 233. The inter-CPU communication control unit 231 receives a request for sending a transfer cutoff signal from the host interface unit 21 and notifies the transfer cutoff control unit 232 of the request. In response to the notification from the inter-CPU communication control unit 231, the transfer blocking control unit 232 converts the ID of the transfer blocking device 6 to which the transfer blocking signal is to be sent into an IP address, and controls the converted IP address to the slave station communication control Output to the unit 233. The slave station communication control unit 233 receives the output from the transfer blocking control unit 232 and sends a transfer blocking signal to the transfer blocking device 6 corresponding to the IP address. The transmission blocking signal is transmitted according to a UDP / IP (User Datagram Protocol / Internet Protocol) communication procedure.

  The inter-CPU communication control unit 231, the transfer cutoff control unit 232, and the slave station communication control unit 233 are realized by the CPU executing a program stored in a predetermined memory.

  The storage unit 24 stores control information 241 and slave station information 242 as data. The control information 241 is a table or the like in which the distributed power supply 7 is registered during the transfer blocking process (batch cancellation command to polling completion). The slave station information 242 is information regarding the transfer blocking device (slave station) 6, for example, information indicating the correspondence between the ID of the transfer blocking device 6 and the IP address.

  The alarm output unit 25 includes an inter-CPU communication control unit 251, an alarm output control unit 252, and a D1 / D0 control unit 253. The inter-CPU communication control unit 251 receives an alarm notification from the upper interface unit 21 and passes it to the alarm output control unit 252. The alarm output control unit 252 receives the alarm notification from the inter-CPU communication control unit 251 and instructs the D1 / D0 control unit 253 to operate the bit of the data register directly connected to the LED of the alarm display unit 26. The D1 / D0 control unit 253 writes 0 or 1 to a predetermined bit in the data register included in the CPU in accordance with the operation procedure instructed by the alarm output control unit 252, thereby causing the alarm display unit 26 to Controls LED display.

  The inter-CPU communication control unit 251, the alarm output control unit 252 and the D1 / D0 control unit 253 are realized by the CPU executing a program stored in a predetermined memory.

  FIG. 3 is a diagram illustrating a hardware configuration of the console box 3. The console box 3 includes a display unit 31, an operation unit 32, a processing unit 33, a GPIB connection unit 34, a storage unit 35, and a medium input / output unit 36. The display unit 31 displays the connection configuration of the power distribution system, the status of each device and the distributed power source, and is realized by a scanning line type display or the like. The operation unit 32 is used by a sales office operator to input power distribution system information and instruct the display of the status of each device and distributed power supply, and is realized by a keyboard, a light pen, or the like. The processing unit 33 controls the entire console box 3 and is realized by a CPU or the like. The GPIB connection unit 34 enables communication between the console box 3 and the transfer cutoff signal transmission device 2 by connecting GPIB, and is realized by a GPIB interface board or the like. The storage unit 35 stores data according to instructions from the processing unit 33 and reads the stored data, and is realized by a non-volatile storage device such as a flash memory or a hard disk device. The medium input / output unit 36 is for inputting / outputting data to / from an external storage medium, and is realized by a CD (Compact Disc) drive, a DVD (Digital Versatile Disk) drive, or the like.

  FIG. 4 is a diagram illustrating a functional configuration of the processing unit 33 of the console box 3. The processing unit 33 includes an overall control unit 331, a distribution system information update unit 332, a maintenance unit 333, and a distributed power management unit 334. The overall control unit 331 determines whether other events in the processing unit 32 occur according to an event that has occurred (for example, acquisition of distribution system information via the operation unit 32 or acquisition of the state of the distributed power source via the GPIB connection unit 34). By starting the respective units, the processing flow of the entire processing unit 32 is controlled. In addition, messages and data are exchanged by controlling the interface between the display unit 31, the operation unit 32, the GPIB connection unit 34, the storage unit 35, the medium input / output unit 36, and other units in the processing unit 33. . The overall control unit 331 is a program module called a so-called kernel or scheduler.

  Each of the distribution system information update unit 332, the maintenance unit 333, and the distributed power management unit 334 is a program module that realizes specific functions of the console box 3 by operating under the control of the overall control unit 331. . The distribution system information update unit 332 acquires the distribution system information from the storage medium set in the operation unit 32 or the medium input / output unit 36, and transmits the acquired distribution system information to the transfer cutoff signal transmission device 2 via GPIB. The maintenance unit 333 acquires failure information of the transfer cutoff signal transmission device 2 from the transfer cutoff signal transmission device 2 via GPIB, and transfers from the transfer cutoff device 6 and the distributed power source 7 via the transfer cutoff signal transmission device 2 and GPIB. The failure information of the shut-off device 6 and the distributed power supply 7 is acquired, and the acquired failure information is displayed on the display unit 31. The distributed power management unit 334 acquires the state of the distributed power source 7 from the distributed power source 7 via the transfer cutoff signal transmission device 2 and GPIB, and the acquired state of the distributed power source 7 and the change in the state of the distributed power source 7 The above-described connection configuration is displayed on the display unit 31, and a signal for controlling on / off of the distributed power source 7 according to the operation of the light pen on the distributed power source 7 displayed on the display unit 31 is transferred to GPIB and transferred It transmits to the distributed power source 7 via the cutoff signal transmission device 2.

<< Data structure >>
FIG. 5 is a diagram illustrating a configuration example of data stored in the storage unit 22 of the transfer cutoff signal transmission apparatus 2. FIG. 5A shows a configuration example of the main data 221. The main data 221 includes distribution system information 224, and the distribution system information 224 includes distribution line information 225 and section information 226. The distribution line information 225 is information related to feeders and sections of distribution lines that are distribution systems. The section information 226 is information related to the distributed power source connected to each section of the distribution line.

  FIG. 5B shows a configuration example of the distribution line information 225. The distribution line information 225 includes a record including a substation ID 2251, a feeder ID 2252, and a section ID 2253. The substation ID 2251 is a number unique to the substation managed by the power company. The feeder ID 2252 is a number unique to the feeder installed at the substation indicated by the substation ID 2251. The section ID 2253 is a number unique to each section of the distribution line connected to the feeder indicated by the feeder ID 2252. According to FIG.5 (b), the feeders A1 and A2 used as the power transmission source are installed in the substation A, for example. The feeder A1 is connected to a distribution line composed of sections A11, A12, and A13. The feeder A2 is connected to a distribution line including sections A21 and A22.

  FIG. 5C shows a configuration example of the section information 226. The section information 226 includes a record including a section ID 2261, a distributed power source ID 2262, position information 2263, and a transfer blocking device ID 2264. The section ID 2261 is a number unique to each section of the distribution line. The distributed power source ID 2262 is a number unique to the distributed power source connected to the section indicated by the section ID 2261. The position information 2263 is information indicating the position of the distributed power source indicated by the distributed power source ID 2262, and is, for example, latitude and longitude. The transfer blocking device ID 2264 is a number unique to the transfer blocking device that blocks the distributed power source indicated by the distributed power source ID 2262. According to FIG.5 (c), power supply A111, A112, and A113 are connected to area A11. The device Z1 shuts off the power source A111. The device Z2 shuts off the power sources A112 and A113.

≪System processing≫
Next, processing of the distributed power supply transfer cutoff system will be described. FIG. 6 is a flowchart showing transfer blocking processing by the distributed power transfer blocking system 1.

  First, the transfer interruption signal transmission device 2 acquires distribution line information and section information (distribution system information) from the console box 3, and constructs main data 221 in the storage unit 22 according to the acquired distribution line information and section information (S601). ). In this case, in the console box 3, the distribution system information update unit 332 acquires the distribution system information via the operation unit 32 or the medium input / output unit 36, and transfers the acquired distribution system information via the GPIB connection unit 34. Transmit to the transmission device 2. When the operation unit 32 is used, the distribution system information input by the operator of the sales office using the operation unit 32 is acquired. On the other hand, when the media input / output unit 36 is used, the operator at the sales office sets a storage medium (CD, DVD, etc.) in the medium input / output unit 36, so that the storage medium can be stored in advance by a PC (Personal Computer) or the like. Acquire stored distribution system information. The distribution system information acquired via the medium input / output unit 36 may be displayed on the display unit 31, and the displayed distribution system information may be further acquired by the operator of the sales office using the operation unit 32.

  Subsequently, in the transfer cutoff signal transmission device 2, the GPIB communication control unit 211 of the upper interface unit 21 receives the distribution system information from the console box 3 via GPIB and passes it to the main data management unit 215. The main data management unit 215 receives the power distribution system information from the GPIB communication control unit 211 and stores it as main data 221 in the storage unit 22. The storage format of the main data 221 is as shown in FIG.

  In addition, when there was a change in the state of the distribution system, the transfer cutoff signal transmission device 2 acquires the changed contents of the distribution line information and the section information from the console box 3 and stored in the transfer cutoff signal transmission device 2 The main data 221 may be updated. Changes in the state of the power distribution system may include, for example, a temporary change in the feeder as a power transmission source or a change in the position of the distributed power source due to work related to the distribution line.

  Next, the transfer interruption signal transmission device 2 checks whether or not CB / Ry information is transmitted from the substation information providing device 4 (S602). In this case, the substation communication control unit 212 confirms whether or not the CB / Ry information is received from the substation information providing apparatus 4. If it is not transmitted (NO in S602), the CB / Ry information is checked again (S602). If it has been transmitted (YES in S602), the transfer cutoff signal transmission process described below is performed.

  The transfer interruption signal transmission device 2 receives the CB / Ry information (accident distribution line information) transmitted from the substation information providing device 4, and from the main data 221 of the storage unit 22, the feeder that has lost the power is transmitted. And a distributed power source connected to the section is extracted (S603). Referring to FIG. 5, the main data management unit 215 first searches the distribution line information 225 in FIG. 5B for a section ID 2253 that is receiving power transmission to the ID 2252 of the feeder that has failed. For example, when feeder A1 has a power failure, sections A11, A12, and A13 are applicable. Next, the ID 2262 of the distributed power source connected to the corresponding section ID 2261 is extracted from the section information 226 in FIG. For example, for the section A11, power supplies A111, A112, and A113 are extracted.

  Subsequently, the transfer cutoff signal transmission device 2 transmits a transfer cutoff signal all at once to the transfer cutoff devices connected to the extracted distributed power supply (S604). In this case, first, the main data management unit 215 obtains the ID 2264 of the transfer blocking device that blocks the extracted distributed power supply ID 2262 from the section information 226 in FIG. 5C. For example, the device Z1 is acquired for the power source A111. Also, the device Z2 is acquired for the power sources A112 and A113. Then, the main data management unit 215 transmits an instruction to transmit a transfer blocking signal to the transfer blocking device of the acquired ID to the slave station interface unit 23 via the inter-CPU communication control unit 217. In the slave station interface unit 23, the transfer cutoff control unit 232 converts the transfer cutoff device ID received by the CPU communication control unit 231 from the upper interface unit 21 into an IP address according to the slave station information 242. Next, the slave station communication control unit 233 transmits a transfer blocking signal to the transfer blocking device 6 of the IP address after conversion. Then, the transfer cutoff control unit 232 registers the ID of the distributed power source 7 during the transfer cutoff process in the control information 241.

  On the other hand, the transfer cutoff device 6 that has received the transfer cutoff signal from the transfer cutoff signal transmission device 2 sends a switch-off signal to the switch connected to the distributed power source 7 to be cut off, and then turns off the switch. Confirm (S605). After confirming that the switch is turned off, an answer back signal is transmitted to the transfer cutoff signal transmission device 2 as a response to the transfer cutoff signal. On the other hand, in the transfer cutoff signal transmission device 2, the main data management unit 215 polls the answer back signal from the transfer cutoff device 6 and checks the transfer cutoff device 6 that is the transmission source of the received answer back signal. Thus, it is confirmed whether or not all the extracted distributed power sources have been disconnected (S606).

  If any of the extracted distributed power sources is not disconnected (YES in S607), the transfer cutoff signal transmission device 2 is directed toward the transfer cutoff device 6 connected to the distributed power source that is not disconnected. A transfer cut-off signal is transmitted (S608). In response to this, the transfer blocking device 6 that has received the transfer blocking signal performs processing (S605). If none of the extracted distributed power sources has been disconnected (NO in S607), the CB / Ry information is checked again (S602), assuming that the transmission interruption signal transmission processing has been completed.

  FIG. 7 is a flowchart showing failure information acquisition processing by the distributed power supply transfer cutoff system 1. First, the console box 3 requests failure information of the master station (transfer cutoff signal transmission device 2) from the transfer cutoff signal transmission device 2 (S701). In this case, in the console box 3, the maintenance unit 333 acquires the request message input by the operator at the sales office via the operation unit 32, and transmits the request message to the transfer cutoff signal transmission device 2 via the GPIB connection unit 34 (S704). The same applies to S707). In response to the request message from the console box 3, the transfer cutoff signal transmission device 2 acquires failure information of itself (master station) and transmits it to the console box 3 (S702). The console box 3 receives and displays the failure information of the master station from the transfer cutoff signal transmission device 2 (S703). In this case, in the console box 3, the maintenance unit 333 acquires the failure information of the master station via the GPIB connection unit 34 and displays it on the display unit 31 (the same applies to S706 and S709).

  Next, the console box 3 requests failure information of the slave station (transfer blocking device 6) from the transfer blocking signal transmission device 2 (S704). The transfer cutoff signal transmission device 2 transfers the received request message to the transfer cutoff device 6. The transfer blocking device 3 receives the request message from the transfer blocking signal transmission device 2, acquires its own (slave station) failure information, and transmits it to the transfer blocking signal transmission device 2 (S705). The transfer cutoff signal transmission device 2 transfers the received failure information of the slave station to the console box 3. The console box 3 receives the failure information of the slave station from the transfer cutoff signal transmission device 2 and displays it (S706).

  Subsequently, the console box 3 requests the transfer cutoff signal transmission apparatus 2 for failure information of the power source (distributed power source 7) (S707). The transfer cutoff signal transmission device 2 transfers the received request message to the distributed power source 7. In response to the request message from the transfer cutoff signal transmission device 2, the distributed power source 7 acquires its own (power supply) failure information and transmits it to the transfer cutoff signal transmission device 2 (S708). The transfer cutoff signal transmission device 2 transfers the received power supply failure information to the console box 3. The console box 3 receives and displays power failure information from the transfer cutoff signal transmission device 2 (S709). When acquiring power supply failure information, the transfer cutoff signal transmission device 2 may request failure information from the distributed power source 7 via the transfer cutoff device 6, or may request the transfer cutoff device 6 to request the failure information. The failure information of the distributed power supply 7 may be acquired.

  FIG. 8 is a flowchart showing the processing of monitoring and controlling the distributed power source by the distributed power source transfer cutoff system 1. First, the console box 3 requests status information of the power source (distributed power source 7) from the transfer cutoff signal transmission device 2 (S801). In this case, in the console box 3, the distributed power management unit 334 acquires a request message input by the sales office operator via the operation unit 32, and transmits the request message to the transfer cutoff signal transmission device 2 via the GPIB connection unit 34. (S806 is the same). The transfer cutoff signal transmission device 2 transfers the received request message to the distributed power source 7. The distributed power supply 7 receives the request message from the transfer cutoff signal transmission device 2, acquires its own (power supply) status information, and transmits it to the transfer cutoff signal transmission device 2 (S802). The transfer cutoff signal transmission device 2 transfers the received power supply state information to the console box 3.

  The console box 3 receives the power supply state information from the transfer interruption signal transmission device 2 and displays it (S803). In this case, in the console box 3, the distributed power management unit 334 acquires power state information via the GPIB connection unit 34 and displays it on the display unit 31 (the same applies to S809). In addition, when displaying the power supply state information on the display unit 31, the connection configuration of the power distribution system may be displayed and superimposed. Further, every time the power supply state information is received, it is stored in the storage unit 35, and the change (history) of the state of the predetermined power supply is displayed (S804).

  Further, when the console box 3 recognizes the operation of the light pen (S805), the console box 3 transmits a power on / off signal corresponding to the operation of the light pen to the transfer cutoff signal transmission device 2 (S806). For example, when a distributed power source displayed on the display unit 31 is touched by a light pen, an on / off signal that changes the current state (on / off) of the distributed power source may be transmitted. It is done. The transfer cutoff signal transmission device 2 transfers the received on / off signal to the distributed power source 7. The distributed power source 7 receives the on / off signal from the transfer cutoff signal transmission device 2 and performs on / off operation of itself (power supply) according to the received on / off signal (S807). Then, it acquires the state information of itself (power supply) and transmits it to the transfer cutoff signal transmission apparatus 2 (S808). The transfer cutoff signal transmission device 2 transfers the received power supply state information to the console box 3. The console box 3 receives the power supply status information from the transfer cutoff signal transmission device 2 and displays it (S809).

  In addition, when acquiring the status information of a power supply or transmitting an on / off signal, the distributed power supply 7 may be accessed from the transfer cutoff signal transmission device 2 via the transfer cutoff device 6, or the transfer The distributed power source 7 may be controlled by requesting the blocking device 6.

  Although the embodiment of the present invention has been described above, a program executed by a processing unit (CPU) of each device is executed by a computer in order to cause each device in the distributed power transfer cutoff system 1 shown in FIG. It is assumed that the distributed power supply transfer cut-off system 1 according to the embodiment of the present invention is realized by recording in a readable recording medium, causing the computer to read and execute the recorded program. Note that the program may be provided to the computer via a network such as the Internet, or a semiconductor chip or the like in which the program is written may be incorporated in the computer.

  According to the embodiment of the present invention described above, it is not necessary to connect the transfer cutoff signal transmission device 2 to a distribution automation system that distributes distribution system information in real time. Therefore, in the past, when installing a distributed power transfer interruption system in an electric power company with different specifications of the distribution automation system, it is necessary to modify the upper interface unit 21 of the transfer interruption signal transmission device 2, which requires extra labor and Although expensive, according to the present invention, power companies with different specifications of the distribution automation system can be used without remodeling the distributed power supply transfer cut-off system 1, and the introduction thereof is promoted.

  Conventionally, companies in non-electric power industries such as gas companies do not have a distribution automation system itself, and if they do not obtain distribution system information in some way, they may use a distributed power transfer interruption system. However, according to the present invention, since the distribution automation system is unnecessary, it is possible to spread the distributed power supply transfer cutoff system 1 to companies outside the power industry.

  Furthermore, since there is no change in the connection configuration for the upper system unrelated to the power distribution automation system, the system information once set can be sufficiently handled. For example, in the past, when using a special high-voltage / high-voltage generator, there is a part where a dedicated communication line is drawn to secure a transmission path for the transfer cutoff signal from the substation to the generator. However, according to the present invention, the system to which the extra high voltage / high voltage generator is connected has almost no change, so the existing infrastructure can be used without connecting to the distribution automation system. The distributed power transfer interruption system 1 can be used, and the cost can be reduced.

  Next, the distribution system information 224 (distribution line information 225 and section information 226) stored in the storage unit 22 of the transfer cutoff signal transmission device 2 can be updated using the console box 3 as necessary. And since GPIB is used, the transfer interruption | blocking signal transmission apparatus 2 and the console box 3 can be connected easily.

  Furthermore, maintenance of the transfer cutoff signal transmission device 2, the transfer cutoff device 6, and the distributed power source 7 can be performed with reference to the displayed failure information. In addition, the distributed power supply 7 can be monitored online with reference to the displayed connection configuration of the distribution system and the state of the distributed power supply 7. Further, the distributed power source 7 can be turned on and off remotely. The future operation can be examined with reference to the state change of the distributed power source 7.

  Although the best mode for carrying out the present invention has been described above, the above embodiment is intended to facilitate understanding of the present invention and is not intended to limit the present invention. The present invention can be changed and improved without departing from the gist thereof, and equivalents thereof are also included in the present invention.

It is a figure which shows the structure of the transfer interruption | blocking system 1 for distributed power supplies. 2 is a diagram illustrating a configuration of a transfer cutoff signal transmission device 2. FIG. 2 is a diagram showing a hardware configuration of a console box 3. FIG. 3 is a diagram illustrating a functional configuration of a processing unit 33 of the console box 3. FIG. It is a figure which shows the structural example of the data memorize | stored in the memory | storage part 22 of the transfer interruption | blocking signal transmission apparatus 2, (a) shows the structural example of the main data 221, (b) shows the structural example of the distribution line information 225. , (C) shows a configuration example of the section information 226. It is a flowchart which shows the transfer interruption | blocking process by the transfer interruption | blocking system 1 for distributed power supplies. It is a flowchart which shows the acquisition process of the failure information by the transfer interruption | blocking system 1 for distributed power supplies. It is a flowchart which shows the process of the monitoring and control of the distributed power supply by the transfer interruption | blocking system 1 for a distributed power supply.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Transfer interruption | blocking system for distributed power supplies 2 Transfer interruption | blocking signal transmission apparatus 21 Host interface part (processing part)
22 storage unit 221 main data 23 slave station interface unit (processing unit)
24 Storage Unit 241 Control Information 3 Console Box 31 Display Unit 32 Operation Unit 332 Distribution System Information Update Unit 333 Maintenance Unit 334 Distributed Power Management Unit 4 Substation Information Providing Device 5, 5A, 5B PLC Modem 6, 6A, 6B PLC Modem Transfer blocking device (transfer blocking device)
7, 7A, 7B Distributed power supply 8 Network

Claims (4)

When an accident occurs in a distribution system that receives power transmission from a substation and connects a distributed power source, the power transmission from the substation is interrupted, and the distributed power source is remotely controlled by a transfer cutoff signal. A transmission block system for a distributed power supply that is disconnected from
The transfer cutoff signal transmission device for transmitting the transfer cutoff signal is:
Memory storing in advance power distribution system information including information specifying at least a feeder, a section of a distribution line connected to the feeder, a distributed power source connected to the section, and a transfer cutoff device that cuts off the distributed power source And
In the event of an accident in the power distribution system, refer to the power distribution system information stored in the storage unit, identify the distributed power source connected to the section of the power distribution line that has failed, and shut off the identified distributed power source A processing unit that sends the transfer cutoff signal to a transfer cutoff device that
A transfer interruption system for a distributed power source, comprising: It is the transfer interruption | blocking system for distributed power supplies of Claim 1, Comprising:
A console box connected to the transfer cutoff signal transmission device;
The console box includes a distribution system information update unit that acquires the distribution system information from the outside and transmits the acquired distribution system information to the transfer cutoff signal transmission device. . It is the transfer interruption | blocking system for distributed power supplies of Claim 2, Comprising:
The console box is
The failure information of the transfer cutoff signal transmission device is acquired from the transfer cutoff signal transmission device, and the failure of the transfer cutoff device and the distributed power source via the transfer cutoff signal transmission device from the transfer cutoff device and the distributed power source. A distributed power transfer interruption system, comprising: a maintenance unit that acquires information and displays the acquired failure information on a display unit. The transfer interrupting system for a distributed power source according to claim 2 or claim 3,
The console box is
The state of the distributed power source is acquired from the distributed power source via the transfer cutoff signal transmission device, and the acquired state of the distributed power source and a change in the state are displayed on the connection configuration of the distribution system. A signal for controlling on / off of the distributed power source according to a light pen operation on the distributed power source displayed on the display unit to the distributed power source via the transfer cutoff signal transmission device. A distributed power supply transfer cut-off system comprising a distributed power supply management unit for transmission.

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