Power distribution automation system

Abstract

To provide a power distribution automation system that can properly monitor or control a power distribution system that is for a plurality of management areas by a simple structure.SOLUTION: In the power distribution automation system, a power distribution system is divided in a plurality of management areas 101 and 102 and adjacent ones of the management areas form one overall area 100. The power distribution automation system includes: a system state storage device 21 for storing the state of the power distribution of the overall area 100; and a monitor control desk 4 for controlling a facility in the power distribution system. The monitor control desk can monitor the state of the total power distribution system in the overall area and can control a facility in the power distribution system of an authorized management area.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a power distribution automation system that monitors and controls a power distribution system, and more particularly to a power distribution automation system that can appropriately monitor and control a power distribution system that spans the management areas of a plurality of business offices. [Background technology]

[0002] Conventionally, distribution automation systems have been installed and operated to monitor distribution systems and control switches, identify the outage area on the distribution system when a power outage occurs, and generate outage information such as the occurrence of a power outage and the restoration of power supply based on the results of monitoring and control. Conventionally, this distribution automation system has been monitoring and control for each sales office, and for example, the monitoring and control desk of sales office A can monitor and control only the distribution system within management area A, and the monitoring and control desk of sales office B can monitor and control only the distribution system within management area B.

[0003] For this reason, for example, assume that switch AB installed on the boundary between management areas A and B is treated as non-remotely controlled by the monitoring and control console of sales office A, but as remotely controlled by the monitoring and control console of sales office B. In this case, when an accident occurs in management area A, switch AB cannot be remotely controlled from the monitoring and control console of sales office A, and automatic reverse transmission is not possible from sales office B / management area B. On the other hand, although switch AB can be remotely controlled from the monitoring and control console of sales office B, it cannot monitor or recognize the accident in management area A, and therefore cannot automatically reverse transmission to sales office A / management area A.

[0004] For this reason, a power distribution system operation device is known that can remotely monitor the power system even in the distribution lines near the boundary of a business office (see, for example, Patent Document 1). This device holds distribution system equipment data and distribution system display data within the jurisdiction of the business office, as well as distribution system equipment data and distribution system display data within the jurisdiction of other adjacent business offices, and connects the distribution system control device installed in the business office and the distribution system control device installed in the other adjacent business office via a transmission line, and transmits distribution system status information within the jurisdiction of the business office to each other. Also, when the necessary control is included in the adjacent distribution system, the operation request output means sends an operation request to the adjacent distribution system operation device, and in response to this operation request, controls the relevant equipment of the distribution system. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 06-165380 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the distribution system operation device described in Patent Document 1, each office must hold distribution system equipment data and distribution system display data for its own office and neighboring offices, which imposes a large burden on the equipment and increases costs. In addition, when the necessary control is included in an adjacent distribution system, if an operation is requested to an adjacent distribution system operation device, the corresponding equipment can be indirectly controlled even if the situation of the adjacent distribution system is not accurately and precisely understood. As a result, there is a risk that inappropriate or unnecessary control will be performed.

[0007] SUMMARY OF THE PRESENT EMBODIMENTS Accordingly, an object of the present invention is to provide a power distribution automation system that is capable of appropriately monitoring and controlling a power distribution system that spans a plurality of management areas with a simple configuration. [Means for solving the problem]

[0008] In order to solve the above problem, the invention of claim 1 relates to a power distribution system divided into multiple management areas. ,next The present invention comprises a system status storage device that stores the power distribution system status of a plurality of adjacent management areas as one generalized area, and a monitoring and control device capable of controlling equipment in the power distribution system, the monitoring and control device being capable of monitoring the status of all the power distribution systems in the generalized area and being capable of controlling equipment in the power distribution system of a management area to which the monitoring and control device is given authority. Cage , The power distribution system status of the system status storage devices of adjacent generalization areas can be mutually transmitted and received, and the monitoring and control device of one generalization area can monitor the power distribution system status of the other generalization area that is necessary for controlling the one generalization area. The present invention relates to a power distribution automation system.

[0009] The invention of claim 2 is characterized in that, in the power distribution automation system according to claim 1, the supervisory control device can be given authority over a plurality of control areas.

[0010] The invention of claim 3 is characterized in that, in the power distribution automation system according to claim 1 or 2, the boundary between adjacent management areas is changeable. Effect of the Invention

[0012] According to the invention described in claim 1, the monitoring and control device can monitor the state of all the distribution systems in the general area and can control the equipment in the distribution system of the management area to which it is authorized, so that it is possible to properly monitor and control the distribution system across multiple management areas. That is, since the monitoring and control device can monitor the state of the distribution system not only in the management area to which it is authorized but also in adjacent management areas, for example, when it monitors and recognizes the occurrence of an accident in an adjacent management area, it is possible to automatically reverse the transmission to the adjacent management area by controlling the equipment in the management area to which it is authorized. Moreover, since the monitoring and control device can control only the management area to which it is authorized and cannot control the management area to which it is not authorized, it is possible to prevent and suppress inappropriate and unnecessary control. In this way, it is possible to properly monitor and control the distribution system across multiple management areas, and the reliability and stability of the power supply are improved.

[0013] Also , multipleThe status of all distribution systems in a general area, which includes multiple management areas, is stored in one system status storage device, and the monitoring and control device can monitor the status of all distribution systems. In other words, since it is not necessary to store the status of the distribution systems in each management area and its adjacent management areas (to have a system status storage device for each management area), the configuration is simple and it is possible to reduce the burden and cost of facilities.

[0014] According to the invention described in claim 2, since the authority of multiple management areas can be given to the monitoring control device, one monitoring control device can control the equipment of multiple management areas, which reduces equipment costs and personnel. Moreover, by controlling the equipment of multiple management areas with one monitoring control device depending on the emergency situation or system status, it becomes possible to prevent and suppress conflicting control and inappropriate / unnecessary control. In other words, it becomes possible to more appropriately monitor and control the power distribution system that spans multiple management areas.

[0015] According to the invention described in claim 3, since the boundaries of adjacent management areas can be changed, when the range of the management area managed by each sales office actually changes, the boundaries of the management areas on this distribution automation system are changed accordingly. This makes it possible to properly monitor the state of the distribution system corresponding to the changed management area with the monitoring and control device, and to properly control the equipment in the changed management area with the monitoring and control device. In this way, even if the range of the management area managed by each sales office actually changes, it becomes possible to properly monitor and control the distribution system that spans multiple management areas.

[0016] Claim 1According to the invention described in the above, since the monitoring control device of one generalization area can monitor the power distribution system state of the other generalization area, it is possible to properly monitor and control the power distribution system even between adjacent generalization areas. In other words, it is possible to properly monitor and control the power distribution system not only within one generalization area but also across multiple adjacent generalization areas. Moreover, only the power distribution system state necessary for controlling one generalization area can be monitored among the power distribution system states of the other generalization area, and there is no need to transmit and receive the entire power distribution system state of the other generalization area, so that the amount of transmission and reception and the amount of storage can be reduced and the configuration is simplified. On the other hand, since the power distribution system state necessary for controlling one generalization area can be monitored, it is possible to properly monitor and control the power distribution system. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a first explanatory diagram showing which management areas can be monitored and controlled depending on authority in the power distribution automation system according to the embodiment of the present invention. [Diagram 2] 1 is a schematic configuration diagram showing a power distribution automation system according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram showing a divided state of a power distribution system in the power distribution automation system according to the embodiment of the present invention. [Figure 4] FIG. 3 is a second explanatory diagram showing which management areas can be monitored and controlled depending on the authority in the power distribution automation system of FIG. 2. [Diagram 5] FIG. 11 is a third explanatory diagram showing which management areas can be monitored and controlled depending on the authority when the boundaries of the management areas are changed in the power distribution automation system of FIG. [Figure 6] FIG. 4 is a fourth explanatory diagram showing which generalized areas can be monitored and controlled depending on the authority in the power distribution automation system of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the present invention will be described based on the illustrated embodiment.

[0019] 1 to 6 show an embodiment of the present invention, and Fig. 2 is a schematic configuration diagram showing a power distribution automation system 1 according to this embodiment. This power distribution automation system 1 is a system that monitors and controls a power distribution system, and monitors and controls the power distribution system across management areas 101, 102, 201... of a plurality of sales offices A, B, C...

[0020] 3, the entire power distribution system is divided into a plurality of management areas 101, 102, 201..., and one management area 101, 102, 201... or adjacent management areas 101, 102, 201... are associated as one general area 100, 200.... In this embodiment, a case will be mainly described in which an area including the management area 101 and the management area 102 is set as the general area 100, and an area including the management area 201 is set as the general area 200.

[0021] The power distribution automation system 1 differs from the conventional one in the monitoring and control configuration described below, and detailed description of the equivalent configuration to the conventional one will be omitted, but the system is roughly configured as follows: That is, as shown in Fig. 2, the power distribution automation server 2 and each remote control master station (power distribution remote control device) 3 are communicatively connected, and the power distribution automation server 2 and a monitoring and control console (monitoring and control device) 4 are communicatively connected. Also, a remote control slave station 41 attached to each utility pole P is communicatively connected to the remote control master station 3, and the remote control slave station 41 controls the opening and closing of a remote control switch 42 on the utility pole P.

[0022] The operating status of the distribution lines (distribution system status) is constantly monitored, and when a power outage occurs due to a distribution line accident, for example, the location of the accident that caused the power outage is identified while controlling the remote control switch 42, etc., and power is distributed (automatic reverse transmission) to distribution lines other than the accident section by operation from the monitoring control desk 4 or automatically. In this way, the power outage area is determined by opening and closing the remote control switch 42, etc., and the power outage area and the non-powered area are separated by the remote control switch 42, etc. In addition, when a power outage occurs due to a substation accident (extra-high voltage accident, momentary voltage drop, etc.), power is distributed (automatic reverse transmission) from surrounding distribution lines to the area where the power outage occurred by operation from the monitoring control desk 4 or automatically.

[0023] Here, a power distribution automation server 2 is installed in an operation control center, and a remote control master station 3 is installed in each of sales offices A, B, C, etc. In this embodiment, in a general area 100, sales office A is the operation control center, i.e., a general sales office, and sales office B is a general sales office. The remote control master station 3 of the general sales office A is connected to a remote control slave station 41 in a management area 101, and the remote control master station 3 of the general sales office B is connected to a remote control slave station 41 in a management area 102. In addition, while FIG. 2 illustrates a case in which two monitoring and control consoles 4 are installed in the general sales office A, one monitoring and control console 4 may be installed in the general sales office A and the other monitoring and control console 4 may be installed in the general sales office B, as described later.

[0024] In addition, as described above, the general area 200 includes only the management area 201, so that as shown in FIG. 6 described later, the sales office C that monitors and controls the management area 201, i.e., the general area 200, becomes the general sales office, and a distribution automation server 2 and a remote control master station 3 are installed therein.

[0025] Next, a characteristic monitoring and control configuration of this power distribution automation system 1 will be described.

[0026] First, a system status storage device (database) 21 that stores the power distribution system status of each generalized area 100, 200... is provided for each generalized area 100, 200... (for each general sales office A, C...). That is, the above-mentioned management areas 101, 102, 201... and generalized areas 100, 200... are divided and set on the power distribution system diagram, and the power distribution system status monitored for each generalized area 100, 200... is stored sequentially in real time in each system status storage device 21 for each generalized area 100, 200....

[0027] For example, in the case of the general area 100, as shown in Fig. 1, the power distribution system status of the general area 100 including the management areas 101 and 102 is stored in a system status storage device 21 disposed in a general sales office A. Similarly, in the case of the general area 200, as shown in Fig. 6, the power distribution system status of the general area 200 including the management area 201 is stored in a system status storage device 21 disposed in a general sales office C.

[0028] Here, the system state storage device 21 is connected to the distribution automation server 2 of the general sales offices A, C, etc., so that the management areas 101, 102, 201, etc. on the distribution system diagram can be divided and set arbitrarily by input from the distribution automation server 2 or other devices. Therefore, the boundaries between adjacent management areas 101, 102, 201, etc. can be changed by input from the distribution automation server 2, etc. For example, the switches (including remote control and non-remote control) indicating the boundaries between the management areas 101, 102, 201, etc. can be set and changed arbitrarily. Also, it is possible to determine which management areas 101, 102, 201, etc. belong to which generalization areas 100, 200, etc. by input from the distribution automation server 2, etc.

[0029] The monitoring and control console 4 is a device capable of supervising and monitoring the state of the power distribution system and controlling the equipment within the power distribution system, and at least one monitoring and control console 4 is provided for each general area 100, 200.... This monitoring and control console 4 belongs to one of the set general areas 100, 200..., that is, to general sales offices A, C.... Here, the monitoring and control console 4 may be provided only in general sales offices A, C..., or may also be provided in general sales office B.... For example, as shown in FIG. 1, two monitoring and control consoles 4 may be provided in general sales office A and one monitoring and control console 4 may be provided in general sales office B.

[0030] This monitoring and control desk 4 is connected to the distribution automation server 2 of the general sales office A, C, etc. to which it belongs, and is capable of monitoring the state of all the distribution systems in the general area 100, 200, etc. to which it belongs. In other words, no matter which sales office A, B, C, etc. it is located in, it is possible to read out the state of all the distribution systems in the general area 100, 200, etc. managed by the general sales office A, C, etc. to which it belongs from the system state storage device 21 and display it on a monitor for monitoring. For example, in the case of FIG. 1 above, the monitoring and control desk 4 located in the general sales office A and the monitoring and control desk 4 located in the general sales office B can be monitored by displaying the same screen, that is, the state of all the distribution systems in the general area 100 (for example, the entire state from substation A to substation B in FIG. 1) on the monitor.

[0031] Moreover, the monitoring and control console 4 can control the equipment in the power distribution system of the management areas 101, 102, 201, etc. to which it has been given authority. In other words, it is possible to set which management areas 101, 102, 201, etc. can be controlled by which monitoring and control console 4 from each monitoring and control console 4, from each monitoring and control console 4 or from the power distribution automation server 2. In this case, a software interlock may be applied so that only the specified management areas 101, 102, 201, etc. can be controlled from a specified monitoring and control console 4, or authority may be given to an operator, and authority may be indirectly given to the monitoring and control console 4. For example, it is possible to allow an operator to control the specified management areas 101, 102, 201, etc. by inputting a specified ID, password, etc. into any monitoring and control console 4.

[0032] As a result, for example, in the case of Fig. 1 above, one of the monitoring control consoles 4 (4-1) installed in the general sales office A can control only the equipment in the management area 101, and cannot control the equipment in the management area 102. On the other hand, the other monitoring control console 4 (4-2) installed in the general sales office A and the monitoring control console 4 (4-3) installed in the general sales office B can control only the equipment in the management area 102, and cannot control the equipment in the management area 101.

[0033] Furthermore, the monitoring control console 4 can be given authority for multiple management areas 101, 102, 201... That is, by using an interlock or the like as described above, one monitoring control console 4 can be given authority for multiple management areas 101, 102, 201..., and one monitoring control console 4 can control the equipment in the power distribution system of the multiple management areas 101, 102, 201.... However, the monitoring control console 4 cannot control beyond the general area 100, 200... to which it belongs, but only within the general area 100, 200... to which it belongs. For example, when the monitoring control consoles 4 are arranged as in FIG. 1, as shown in FIG. 4, one monitoring control console 4 (4-1) arranged in the general sales office A can be given authority for the two management areas 101 and 102, and one monitoring control console 4 (4-1) can control the equipment in the two management areas 101 and 102.

[0034] Furthermore, when the boundaries between adjacent management areas 101, 102, 201, ... are changed as described above, the equipment that can be controlled by each monitoring control console 4 also changes accordingly. For example, assume that authority is granted to each monitoring control console 4 as shown in FIG. 1 above, and the remote control switch 42 indicating the boundary between management area 101 and management area 102 is shifted to the management area 102 / substation B side (management area 101 is expanded to the management area 102 side) as shown in FIG. 5. In this case, the other monitoring control console 4 (4-2) of general sales office A and the monitoring control console 4 (4-3) of general sales office B can control the three remote control switches 42 (42-1, 42-2, 42-3) on the substation B side before the change, but can control only one remote control switch 42 (42-1) after the change. In contrast, one of the monitoring and control consoles 4 (4-1) at the head office A was unable to control the three remote control switches 42 (42-1, 42-2, 42-3) on the substation B side before the change, but after the change it will be able to control two remote control switches 42 (42-2, 42-3).

[0035] In addition, the power distribution system status of the system status storage device 21 of the adjacent generalization areas 100, 200... can be exchanged between them, and the monitoring and control console 4 of one generalization area 100, 200... can monitor the power distribution system status of the other generalization area 100, 200... that is necessary for controlling one generalization area 100, 200.... That is, the power distribution automation servers 2 of the adjacent generalization areas 100, 200... are connected to each other so as to be able to communicate with each other, and one power distribution automation server 2 transmits and receives the power distribution system status of the other generalization area 100, 200... that is necessary for controlling its own generalization area 100, 200... from the system status storage device 21 of the other power distribution automation server 2 in real time, and stores it in the system status storage device 21. The power distribution system status of the other generalization area 100, 200... can be displayed and monitored on the monitor of the monitoring and control console 4 at all times or as necessary.

[0036] Here, the power distribution system state of the other generalized area 100, 200... necessary for controlling the own generalized area 100, 200... depends on the configuration and state of the power distribution system, but in this embodiment, it is a simplified power distribution system state including the state of the dummy power source indicating whether the other generalized area 100, 200... (particularly, the periphery of the adjacent area) is charged or not, and the state of the switch (including remote control and non-remote control) installed on the boundary with the other generalized area 100, 200.... For example, as shown in Fig. 6, the monitoring control desk 4 of the generalized area 100 (e.g., general sales office A) displays the entire power distribution system state 100S of the own generalized area 100 and the simplified power distribution system state 200S' indicating the state of the dummy power source and the boundary switch (e.g., remote control switch 42) of the adjacent generalized area 200, and can be monitored. Similarly, the monitoring control desk 4 in the centralized area 200 (centralized sales office C) displays the entire power distribution system status 200S of the centralized area 200 itself and a simplified power distribution system status 100S' indicating the status of the dummy power source and boundary switch (e.g., remote control switch 42) of the adjacent centralized area 100, making it possible to monitor them.

[0037] According to the power distribution automation system 1 configured as above, the monitoring and control console 4 can monitor the state of all the power distribution systems in the general areas 100, 200, etc. to which it belongs, and can control the equipment in the power distribution systems of the management areas 101, 102, 201, etc. to which it is authorized, so that it is possible to properly monitor and control the power distribution system across a plurality of management areas 101, 102, 201, etc. That is, for example, the monitoring and control console 4 of the general sales office B shown in FIG. 1 can monitor not only the power distribution system state of the management area 102 to which it is authorized, but also the power distribution system state of the adjacent management area 101. Therefore, for example, when the occurrence of an accident in the adjacent management area 101 is monitored and recognized, it is possible to automatically reverse the power transmission to the adjacent management area 101 by controlling the equipment of the management area 102 to which it is authorized (for example, the remote control switch 42 located at the boundary with the management area 101).

[0038] Moreover, the monitoring control console 4 can only control the management areas 101, 102, 201... for which it has been granted authority, and cannot control the management areas 101, 102, 201... for which it has not been granted authority, making it possible to prevent and suppress inappropriate or unnecessary control. In this way, it becomes possible to properly monitor and control the power distribution system that spans multiple management areas 101, 102, 201..., improving the reliability and stability of the power supply.

[0039] Furthermore, the status of the entire distribution system in one management area 101, 102, 201... or in a generalization area 100, 200... including multiple management areas 101, 102, 201... is stored in one system status storage device 21, and the status of the entire distribution system in the generalization area 100, 200... to which each monitoring and control console 4 belongs can be monitored and shared. For example, in Fig. 1, one system status storage device 21 is provided for one generalization area 100, and the monitoring and control console 4 of general sales office A and the monitoring and control console 4 of general sales office B can both monitor and share the status of the entire distribution system in the generalization area 100. In this way, since there is no need to store the power distribution system status of each management area 101, 102, 201... (sales offices A, B, C...) and the adjacent management areas 101, 102, 201... (providing a system status storage device 21 for each management area 101, 102, 201...), the configuration is simplified and it is possible to reduce the equipment burden and costs.

[0040] 4, since authority for multiple management areas 101, 102 can be given to one monitoring control console 4, one monitoring control console 4 can control the equipment in multiple management areas 101, 102, reducing equipment costs and personnel. Moreover, by controlling the equipment in multiple management areas 101, 102 with one monitoring control console 4 (one operator) in an emergency, depending on the system configuration, status, etc., it becomes possible to prevent and suppress conflicting control, and inappropriate / unnecessary control. In other words, it becomes possible to more appropriately monitor and control the power distribution system spanning multiple management areas 101, 102.

[0041] 5, since the boundary between adjacent management areas 101, 102 can be changed, when the range of the management areas 101, 102 managed by each of the sales offices A, B actually changes, the boundary between the management areas 101, 102 on the power distribution automation system 1 is changed accordingly. This makes it possible to properly monitor the state of the power distribution system corresponding to the management areas 101, 102 after the change by the monitoring and control desk 4, and to properly control the equipment in the management areas 101, 102 after the change by the monitoring and control desk 4. In this way, even if the range of the management areas 101, 102 managed by each of the sales offices A, B actually changes, it becomes possible to properly monitor and control the power distribution system spanning multiple management areas 101, 102.

[0042] As shown in FIG. 6, the monitoring and control console 4 of one generalization area 100, 200 can monitor the power distribution system state of the other generalization area 100, 200, so that the power distribution system can be properly monitored and controlled even between adjacent generalization areas 100, 200. That is, it is possible to properly monitor and control not only the power distribution system in one generalization area 100, 200 but also the power distribution system spanning multiple adjacent generalization areas 100, 200. Moreover, only the power distribution system state necessary for controlling one generalization area 100, 200 among the power distribution system states of the other generalization area 100, 200, that is, only the simplified power distribution system state 100S', 200S' indicating the state of the dummy power source and the boundary switch, can be monitored. That is, since it is not necessary to transmit and receive the entire power distribution system state of the other generalization area 100, 200, the amount of transmission and reception and the amount of storage can be reduced, and the configuration is simplified. On the other hand, since the power distribution system state required for controlling one of the generalized areas 100, 200, that is, the simplified power distribution system states 100S', 200S', can be monitored, it becomes possible to appropriately monitor and control the power distribution system.

[0043] Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there are design changes within the scope of the present invention, they are included in the present invention. For example, the division configuration of the distribution system and the configuration of the generalization areas 100, 200... are not limited to those described above, and for example, a generalization area may be composed of three or more adjacent management areas. In this case, the management areas may be adjacent in a chain, and it is sufficient that the management area is adjacent to any of the management areas, and it is not necessary that the management area is adjacent to all management areas. [Explanation of symbols]

[0044] 1. Power distribution automation system 2. Power distribution automation server 21 System status memory device 3 Remote control master station (power distribution remote control device) 4. Monitoring and control console (monitoring and control device) 41 Remote control slave station 42 Remote control switch 101, 102, 201 Management Area 100, 200 General area

Claims

1. a system status storage device in which a power distribution system is divided into a plurality of management areas, a plurality of adjacent management areas are regarded as one generalized area, and a power distribution system status of the generalized area is stored; A monitoring and control device capable of controlling equipment in a power distribution system; The monitoring and control device is capable of monitoring the state of the entire power distribution system in the general area and controlling the equipment in the power distribution system of the management area to which the authority is given, The power distribution system status of the system status storage device of the adjacent general area can be mutually exchanged, The monitoring and control device of one generalization area is capable of monitoring a power distribution system state necessary for controlling the one generalization area among the power distribution system states of the other generalization area. A power distribution automation system comprising:

2. The monitoring control device can be given authority over a plurality of management areas.

2. The power distribution automation system according to claim 1 .

3. The boundaries of adjacent management areas can be changed.

3. The power distribution automation system according to claim 1 or 2.

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