JP7613074B2 - Power distribution automation system - Google Patents

Description

The present invention relates to a distribution automation system that monitors and controls a power distribution system, and in particular to a distribution automation system that can properly monitor and control a power distribution system that spans the management areas of multiple sales offices.

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, in this distribution automation system, monitoring and control were performed for each sales office, and for example, the monitoring and control desk at sales office A could monitor and control only the distribution system within management area A, and the monitoring and control desk at sales office B could monitor and control only the distribution system within management area B.

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 at the monitoring and control console of sales office A, but as remotely controlled at 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 the monitoring and control console of sales office B can remotely control switch AB, it cannot monitor or recognize the accident in management area A, and therefore cannot automatically reverse transmission to sales office A/management area A.

For this reason, a power distribution system operation device is known that can remotely monitor the power system even on 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 itself, 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 itself to 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 itself to each other. Furthermore, if the required control is included in the adjacent distribution system, an operation request output means is used to request an operation to the adjacent distribution system operation device, and in response to this operation request, the device controls the relevant equipment of the distribution system.

Japanese Patent Application Publication No. 06-165380

However, with 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 adjacent offices, which imposes a large burden on the equipment and increases costs. Furthermore, when the required control is included in an adjacent distribution system, if an operation is requested from the adjacent distribution system operation device, the relevant equipment can be indirectly controlled even without detailed and accurate knowledge of the status of the adjacent distribution system. As a result, there is a risk that inappropriate or unnecessary control will be performed.

The present invention aims to provide a power distribution automation system that can properly monitor and control a power distribution system that spans multiple management areas with a simple configuration.

In order to solve the above problem, the invention of claim 1 is a power distribution automation system comprising: a power distribution system divided into a plurality of management areas , a plurality of adjacent management areas being treated as one generalization area; a system status memory device that stores the power distribution system status of the generalization area; and a monitoring and control device capable of controlling equipment in the power distribution system, wherein the monitoring and control device is capable of monitoring the status of the entire power distribution system in the generalization area and is capable of controlling equipment in the power distribution system of an authorized management area, and the power distribution system status of the system status memory device of adjacent generalization areas can be mutually exchanged, and the monitoring and control device of one generalization area is capable of monitoring the power distribution system status of the other generalization area that is necessary for controlling the one generalization area .

The invention of claim 2 is characterized in that in the power distribution automation system described in claim 1, the monitoring and control device can be given authority for multiple management areas.

The invention of claim 3 is characterized in that in the power distribution automation system described in claim 1 or 2, the boundaries between adjacent management areas can be changed.

According to the invention described in claim 1, the monitoring and control device can monitor the state of all 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 that spans multiple management areas. In other words, 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 only control 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 that spans multiple management areas, improving the reliability and stability of the power supply.

In addition , the status of all distribution systems in a general area including 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 provide 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.

According to the invention described in claim 2, since the authority for multiple management areas can be granted to the monitoring control device, one monitoring control device can control the equipment in multiple management areas, which reduces equipment costs and personnel. Moreover, by controlling the equipment in multiple management areas with one monitoring control device in response to emergencies, system conditions, 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 that spans multiple management areas.

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.

According to the invention described in claim 1 , 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 not only a power distribution system within one generalization area, but also a power distribution system that spans 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.

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. 1 is a schematic configuration diagram showing a power distribution automation system according to an embodiment of the present invention. 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. 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 . 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. 2 . 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. 2 .

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

Figures 1 to 6 show an embodiment of the present invention, and Figure 2 is a schematic 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, etc. of multiple sales offices A, B, C, etc.

As shown in FIG. 3, the entire power distribution system is divided into a number of management areas 101, 102, 201, etc., and one management area 101, 102, 201, etc. or adjacent management areas 101, 102, 201, etc. are associated as one general area 100, 200, etc. In this embodiment, the case where an area including management area 101 and management area 102 is set as general area 100, and an area including management area 201 is set as general area 200 will be mainly described.

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 connected so as to be able to communicate with each other, and the power distribution automation server 2 and the monitoring and control console (monitoring and control device) 4 are connected so as to be able to communicate with each other. In addition, the remote control slave stations 41 attached to each utility pole P are connected so as to be able to communicate with the remote control master station 3, and the remote control slave stations 41 control the opening and closing of the remote control switches 42 on the utility poles P.

The system constantly monitors the operational status of the distribution lines (distribution system status), 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 switches 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 switches 42, etc., and the power outage area and non-powered area are separated by the remote control switches 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.

Here, a power distribution automation server 2 is installed in the operation control center, and a remote control master station 3 is installed in each of the sales offices A, B, C, etc. In this embodiment, in the general area 100, the sales office A is the operation control center, i.e., the general sales office, and the sales office B is a general sales office. The remote control master station 3 of the general sales office A is connected to the remote control slave station 41 in the management area 101, and the remote control master station 3 of the general sales office B is connected to the remote control slave station 41 in the 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.

In addition, as described above, the general area 200 includes only the management area 201, so as shown in FIG. 6 described later, sales office C, which 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 there.

Next, we will explain the characteristic monitoring and control configuration of this power distribution automation system 1.

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

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

The system status storage device 21 is connected to the distribution automation server 2 of the general sales offices A, C, etc., and can be freely accessed, and can arbitrarily divide and set the management areas 101, 102, 201, etc. on the distribution system diagram 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) that indicate the boundaries between the management areas 101, 102, 201, etc. can be arbitrarily set and changed. Also, it is possible to determine which management areas 101, 102, 201, etc. belong to which general area 100, 200, etc. by input from the distribution automation server 2, etc.

The monitoring and control console 4 is a device capable of monitoring and supervising 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, etc. This monitoring and control console 4 belongs to one of the set general areas 100, 200, etc., that is, to general sales offices A, C, etc. Here, the monitoring and control console 4 may be provided only in general sales offices A, C, etc., or may also be provided in general sales office B, etc. For example, as shown in Figure 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.

This monitoring and control console 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 status of all 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 status of all 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 status storage device 21 and display it on a monitor for monitoring. For example, in the case of Figure 1 above, the monitoring and control console 4 located in the general sales office A and the monitoring and control console 4 located in the general sales office B can be monitored on the same screen, that is, the status of all distribution systems in the general area 100 (for example, the entire status from substation A to substation B in Figure 1) can be displayed on the monitor.

The monitoring and control console 4 can control the equipment in the distribution system of the management areas 101, 102, 201, etc. for which it has been granted authority. In other words, which management areas 101, 102, 201, etc. can be controlled by which monitoring and control console 4 can be set from each monitoring and control console 4 or the distribution automation server 2. In this case, a software interlock may be set so that only a specific management area 101, 102, 201, etc. can be controlled from a specific 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, an operator may be able to control a specific management area 101, 102, 201, etc. by inputting a specific ID or password into any monitoring and control console 4.

As a result, for example, in the case of Figure 1 above, one of the monitoring control consoles 4 (4-1) located at the general sales office A can only control 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) located at the general sales office A and the monitoring control console 4 (4-3) located at the general sales office B can only control the equipment in the management area 102, and cannot control the equipment in the management area 101.

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 multiple management areas 101, 102, 201.... However, the monitoring control console 4 can only control within the general area 100, 200... to which it belongs, and cannot control beyond 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, 102, and one monitoring control console 4 (4-1) can control the equipment in the two management areas 101, 102.

In addition, when the boundaries between adjacent management areas 101, 102, 201, etc. 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 areas 101 and 102 is shifted to the management area 102/substation B side (management area 101 is expanded toward management area 102) 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 after the change they can only control one remote control switch 42 (42-1). 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).

The power distribution system status of the system status storage device 21 of the adjacent generalized areas 100, 200... can be exchanged between them, and the monitoring and control console 4 of one generalized area 100, 200... can monitor the power distribution system status of the other generalized area 100, 200... that is necessary for the control of one generalized area 100, 200.... In other words, the power distribution automation servers 2 of the adjacent generalized areas 100, 200... are connected to each other so that they can communicate with each other, and one power distribution automation server 2 sequentially exchanges and receives the power distribution system status of the other generalized area 100, 200... that is necessary for the control of its own generalized 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 generalized area 100, 200... can be displayed and monitored on the monitor of the monitoring and control console 4 at all times or as needed.

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... (especially the surrounding area 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 console 4 in the general area 200 (general sales office C) displays the overall power distribution system status 200S of the local general area 200 and a simplified power distribution system status 100S' showing the status of the dummy power source and boundary switch (e.g., remote control switch 42) of the adjacent general area 100, making it possible to monitor them.

According to the power distribution automation system 1 configured as described above, the monitoring and control console 4 can monitor the status of all the power distribution systems in the general area 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 has been granted authority, making it possible to properly monitor and control the power distribution system that spans multiple 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 status of the management area 102 to which it has been granted authority, but also the power distribution system status of the adjacent management area 101. Therefore, for example, when 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 has been granted authority (for example, the remote control switch 42 located on the border with the management area 101).

Moreover, the monitoring and 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.

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

As shown in FIG. 4, authority for multiple management areas 101 and 102 can be granted to one monitoring control console 4, so that one monitoring control console 4 can control the equipment in multiple management areas 101 and 102, reducing equipment costs and personnel. Furthermore, by controlling the equipment in multiple management areas 101 and 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 or unnecessary control. In other words, it becomes possible to more appropriately monitor and control the power distribution system that spans multiple management areas 101 and 102.

Furthermore, as shown in FIG. 5, the boundaries of adjacent management areas 101, 102 can be changed, so that when the range of the management areas 101, 102 managed by each of sales offices A and B actually changes, the boundaries of the management areas 101, 102 on this distribution automation system 1 are changed accordingly. This makes it possible to properly monitor the state of the distribution system corresponding to the changed management areas 101, 102 using the monitoring and control console 4, and to properly control the equipment in the changed management areas 101, 102 using the monitoring and control console 4. In this way, even if the range of the management areas 101, 102 managed by each of sales offices A and B actually changes, it becomes possible to properly monitor and control the distribution system spanning multiple management areas 101, 102.

As shown in FIG. 6, since the monitoring and control console 4 of one generalized area 100, 200 can monitor the power distribution system status of the other generalized area 100, 200, it is possible to properly monitor and control the power distribution system even between adjacent generalized areas 100, 200. In other words, it is possible to properly monitor and control the power distribution system not only within one generalized area 100, 200 but also across multiple adjacent generalized areas 100, 200. Moreover, only the power distribution system status necessary for controlling one generalized area 100, 200 among the power distribution system statuses of the other generalized areas 100, 200, that is, only the simplified power distribution system statuses 100S', 200S' indicating the status of the dummy power source and the boundary switch, can be monitored. In other words, since there is no need to exchange the entire power distribution system status of the other generalized 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, the power distribution system state required for controlling one of the generalized areas 100, 200, i.e., the simplified power distribution system state 100S', 200S', can be monitored, making it possible to properly monitor and control the power distribution system.

Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and design changes that do not deviate from the gist of the present invention are also included in the present invention. For example, the division configuration of the power distribution system and the configuration of the generalized areas 100, 200, etc. are not limited to those described above, and for example, a generalized 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 one of the management areas, and it is not necessary that the management area is adjacent to all management areas.

1 Power distribution automation system 2 Power distribution automation server 21 System status storage 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 Control area 100, 200 General area

Claims (3)

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: The monitoring control device can be given authority over a plurality of management areas.
2. The power distribution automation system according to claim 1 . The boundaries of adjacent management areas can be changed.
3. The power distribution automation system according to claim 1 or 2.