JPH06141467A - Accident-restoration operating apparatus - Google Patents

Abstract

PURPOSE:To achieve that an electric-power supply trouble due to an accident can be eliminated by a simple means in the accident-restoration operating apparatus in a distribution system. CONSTITUTION:An accident-restoration operating apparatus is composed of a telecontrol device 1 which makes and breaks a circuit breaker, a computer 2, an operator console 3 and a storage device 4 which stores the state of a distribution system. The computer 2 is provided with a monitoring and control means 21 which monitors and controls the state of the distribution system, with a load computation means 22 which computes the power margin of a distribution line and with an interchange power-transmission procedure formation means 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer-based fault recovery operation device for a distribution line system.

[0002]

2. Description of the Related Art The current disaster recovery operation method for distribution systems is
For example, as shown in Japanese Patent Application No. 53-37777, the reserve capacity of all distribution lines of the distribution system is calculated, and the unrestored section is minimized from the combination of the reserve capacity and the switch on the system. The configuration is such that a flexible transmission procedure is created based on the combination that is found.

[0003]

As the power distribution system becomes larger, the number of distribution lines and switches in the power distribution system also increases, resulting in an enormous number of combinations. Therefore,
It is necessary to find the optimum combination from the huge number of combinations. Therefore, it takes a long time to find the optimum combination and to create the flexible transmission procedure, which may not be suitable for the recovery of the power supply failure due to a highly urgent accident. The present invention has been made in view of the above circumstances, and provides an accident recovery operation device capable of significantly reducing the time required for finding an optimal combination and quickly solving a power supply failure due to an accident. It is an object.

[0004]

An accident recovery operating device according to [Claim 1] of the present invention is, as shown in FIG. 1, a teleconverter device 1 for monitoring and operating an actual switch, a computer 2, and a console. 3 and a storage device 4 for storing the state of the distribution system, the computer monitors and controls the state of the distribution system.
Control means 21 and load calculation means for calculating reserve capacity of distribution line
22 and an interchange power transmission procedure creating means 23. or,
The accident recovery operating device according to [Claim 2] has the same hardware configuration as that of Claim 1, and is different only in the function of the interchange power transmission procedure creating means 23.

[0005]

In the accident recovery operation device according to [Claim 1] of the present invention, the teleconverter device 1 monitors and controls the current load current value of the distribution line, changes in the on / off state of the components of the distribution system, etc. in the computer 2. The means 21 is notified, and the monitoring / control means 21 receiving the notification saves the data and the result of the system change in the storage device 4.
When the monitoring / control means 21 is notified that an accident has occurred in the power distribution system via the teleconverter device 1, the occurrence of an accident section and a power supply failure section is compared with the power distribution system in the storage device 4 and the like. The monitoring / control means 21 recognizes. When the monitoring / control means 21 recognizes that a power failure section has occurred, it notifies the interchange power transmission procedure creating means 23 of the power failure section. In determining the interchange route, the distantly controllable switches connected to the power failure section are collected as the restoration target switches, the reserve power of the power distribution line of the restoration target switches is calculated by the load calculation means 22, and each restoration target switching is performed. Register and save vessels and their reserves. Further, the load calculation means 22 calculates the load of each section from the current value of the distribution line including the power failure section before the power supply failure, and the section load related to the power failure section is stored. Then, rearrange the registered reserve switches in descending order of reserve capacity, and select the switch with the maximum reserve capacity as a flexible switch candidate.
The section load of the power failure section connected to the flexible switch is compared. If the switch reserve is greater than the section load,
Register the switch as a flexible switch. By registering the accommodation switch, the power failure section connected to the accommodation switch is registered as an already restored section, and the number of power failure sections is reduced by one section. New collection of switches to be restored,
Any one of the following termination conditions for the above processing
Repeat until one is met. All blackout sections are already restored sections. All switches to be restored are registered as interchange switches. The reserve capacity of the remaining switch to be restored is smaller than the section load before the power supply failure in the connected power failure section. After the flexible route is determined, the procedure is edited and displayed on the console 3. Further, the execution of the operation procedure is notified to the monitoring / control means 21, and the monitoring / control means 21 transmits a control command to the teleconverter device 1 to execute the corresponding procedure.

The accident recovery operating device according to [Claim 2] of the present invention is the same as the above [Claim 1] in the preparation of the flexible transmission procedure.
The difference between the two is that when selecting the interchangeable switch that has the same reserve capacity, the unrecovered section remains on the power supply side by giving top priority to the switch whose one side section has been restored and one side section is the normal power failure section. It is a point to eliminate the problem. That is, the details are as follows. When the accommodation route is determined by the accommodation power transmission procedure creating means 23, if there are a plurality of restoration operation target switches having the same reserve capacity, the restoration operation target candidate switches are selected in the following priority order. A switch that is adjacent to the already-restored section and the concession section is adjacent to the load side. A switch that is adjacent to the already restored section and the concession section is adjacent to the power supply side. Switch other than. When the selected switch for restoration operation target switch hits, the following is performed. (a) Calculate the total section load in the group of healthy blackout sections that can be systematically interchanged from the section. (b) Calculate the total reserve capacity of the switches to be restored which are connected to the above section group. (c) If (a) <(b), the selected switch for restoration operation target is not set as the restoration operation target switch, and the switch with the next highest priority is selected. (d) If (a) ≥ (b), the selected switch for restoration operation target is the switch for restoration operation target. (e) When there are multiple restoration operation target switchgear for which (a) ≧ (b), the total reserve capacity and total zone load are compared in the following priority order.・ The switch with the larger difference between the total reserve capacity and the total section load.・ If the difference is the same, the switch with the larger total section load.・ If the total section load is the same, the switch on the more load side. If the selected switch is applicable, the switch is selected as the switch for restoration operation. The selected switch subject to restoration operation has the following conditions, that is, the reserve capacity of the distribution line that is the power source of the switch subject to restoration operation is larger than the load before the power failure in the concession section. The switch to be restored can be remotely controlled. If the condition is satisfied, the switch to be restored is registered as an interchange switch. Then, the recovery operation target switches are newly collected and the above process is repeated until the following end condition is satisfied. All blackout sections are already restored. All switches to be restored are registered as flexible switches. The remaining reserve of the switch to be restored is smaller than the section load before the power supply failure in the connected power failure section.

[0007]

Embodiments Embodiments will be described below with reference to the drawings. FIG. 1 shows an embodiment of an accident recovery operation device according to the present invention,
FIG. 2 shows a system diagram in a healthy state. In FIG. 2, CB represents a breaker of the distribution line, S represents a switch, and K represents a section. Further, the switches which are painted out are in the on state, and the switches which are not painted are in the off state. FIG. 9 shows a flow of determining a flexible route. In FIG. 1, the accident recovery operation device is composed of a teleconverter device 1 for opening and closing a switch, a computer 2, a console 3 and a storage device 4 for storing the state of the distribution system, and the computer 2 monitors the state of the distribution system. A monitoring / control means 21 for controlling, a load calculating means 22 for calculating the reserve capacity of the distribution line, and an interchange power transmission procedure creating means 23 are provided.

Next, the operation will be described. Figure 3 is section K
41 shows the state of the accident. In this case, the monitoring / control means 21 recognizes this by the notification from the teleconverter device 1. The load calculation means 22 calculates the section load of each blackout section (sections K42, K43, K44 in FIG. 3) of the accident distribution line CB4,
It is stored in the section load table shown in FIG. 7 (a) (F in FIG. 9).
1). When calculating the section load, the distribution line load current value before the accident, which is stored in advance in the storage device 4 via the monitoring / control means 21 from the teleconverter 1, is set in advance for each section in each section. This is performed by proportional distribution based on the section basic load set and stored in the storage device 4.
Next, the switches that are connected to each power cut section that can be remotely controlled are collected (target switch collection, F2 in FIG. 9). In this case, the switches (Sb, Sc, Se) connected to each power failure section are the restoration target switches, and the power distribution line (Sb) of each restoration target switch (Sb
For CB1, Sc for CB3, Se for C
The reserve force of B6) is calculated by the load calculating means 22 of FIG. The reserve capacity can be calculated as a difference between the allowable current value preset for each CB facility and the current distribution line load current value input from the teleconverter device 1 to the monitoring / control means 21. This reserve becomes the reserve for each switch to be restored (F3 in FIG. 9). Figure 7 (b) shows the switch table to be restored. FIG. 7 (c) shows the result of rearranging the switch tables to be restored in order of increasing reserve capacity (F4 in FIG. 9).

Sc having the maximum reserve capacity is extracted as a switch target candidate for accommodation (F5 in FIG. 9) and compared with the section load of the section K42 to which Sc is connected (F6 in FIG. 9). Since the reserve capacity of Sc is 100 and the section load of K42 is 50, Sc is registered in the interchange target switch table shown in FIG. 7D as an interchange target switch (F7 in FIG. 9). If the section load connected is larger than the reserve capacity of the switch that is a candidate for interchange, that switch is removed from the switch to be restored, and the switch with the next largest reserve is targeted for interchange. As a switch candidate, the section load of the connecting section is compared (F in FIG. 9).
8). In the section K42, since Sc is the switch to be restored, it is excluded from the power failure section as the already restored section from the power failure section, but other power failure sections remain (F9 in Fig. 9).
Again, the switches to be restored are collected (F2 in FIG. 9). S
Since c becomes the interchange target switch, the switch S43 connected to K42 becomes the recovery target switch newly connected to the power failure section. The system at this time is shown in FIG. The switch S43 is newly registered as a recovery target switch in the recovery target switch table. At this time, the reserve force of the switch S43 becomes a value obtained by subtracting the section load of the section K42 from the reserve force of the switch Sc (calculation of reserve capacity of F3 in FIG. 9). Fig. 8 (a) shows the recovery target switch table as a result of collection of recovery target switches. When the switch tables to be restored are sorted in the order of reserve capacity (F4 in FIG. 9) and the switch with the largest reserve capacity is extracted (F5 in FIG. 9), Sb becomes the target and the section K44 where Sb is connected. Since the reserve capacity of Sb is larger than the load, it is registered in the interchange target switch table (F in FIG. 9).
6). Fig. 8 (b) shows the interchangeable switch table at this time,
FIG. 5 shows the system state at this time.

The section K44 becomes an already restored section due to Sb, but the blackout section remains (F9 in FIG. 9).
The switches to be restored (F2 in FIG. 9) are collected and the switches S
44 are newly collected as switches to be restored. The reserve capacity is calculated (F3 in FIG. 9), and the restoration target switch table is rearranged (F4 in FIG. 9). The results are shown in Fig. 8 (c). The switch S44 having the maximum reserve is extracted as the next switch to be restored (F5 in FIG. 9), and the section load and reserve of the connection section K43 are compared (F6 in FIG. 9). Since the reserve capacity of the switch S44 is larger, it is registered in the interchange target switch table, and the section K43 is set as the already restored section (F in FIG. 9).
7). As a result, all the power outage sections become already restored sections, the end conditions are satisfied, and the interchange route determination is completed (F in FIG.
9). The system state at this time is shown in FIG. 6, and the interchangeable switch table is shown in FIG. 8 (d). Based on the data in the interchangeable switch table shown in Fig. 8 (d), in order to recover the accident from the switch name that is electrically connected to the load side (hereinafter, load side) in the fault distribution line Procedures (hereafter, accident recovery procedures) will be created. According to FIG. 6, since the switch Sb is connected to the recovery section on the load side of Sc, it is the first procedure. By turning on Sb, the switch S44 can be turned on, which is the second procedure. As the third procedure, the switch Sc is turned on. In this way, a recovery procedure is created for each accommodation route, and the recovery procedure is executed after registration as an accident recovery procedure from the accommodation route that recovers the recovery section on the load side.
Since the number of combinations of distribution line reserves and switches is reduced, it is possible to create restoration procedures at high speed,
It has become possible to significantly reduce the time required for restoration.

The above embodiment is a system in which the progressive transfer switch has the highest priority when determining the transfer route. Therefore, when there is no switch to be accommodated in the power supply side section or when the reserve capacity is insufficient, the power supply side cannot be restored, and as a result, the unrestored section may increase. In the example shown below, regarding the selection of the interchange target switch having the same reserve capacity, by selecting the switch whose one side section has already been restored and whose one side section is the sound power failure section as the highest priority, it has not been restored to the power supply side. It is intended to eliminate the remaining section. Figure 1
0 and FIG. 11 will be described. Fig. 10 is a system diagram for a healthy condition, Fig. 1
Figure 1 shows the system diagram when an accident occurs. It should be noted that the system diagrams of FIGS. 10 to 17 used in the present embodiment are newly created to facilitate the description of the present embodiment. Further, FIG. 18 is a table used in determining an accommodation route, and FIG. 19 is a flow chart showing a flow of selecting an accommodation target switch having the same reserve capacity.

The monitoring / control means 21 receives a power failure from the teleconverter device 1, and the load calculating means 22 calculates the section load of the power failure section, as in the above-mentioned embodiments.
The accident point in this case is the position of CB3, and therefore the blackout section is K31, K32, K33, K34, K35, K36.
Then, the section load of each power failure section is stored in the section load table shown in FIG. 18 (a) (F1 in FIG. 9). Next, Fig. 18 (b) shows the switch to be restored that is connected to each power failure section that can be controlled remotely.
It collects in the switch table for recovery operation shown in (F2 of FIG. 9). Switches Sa, Sb, Sd connected to each blackout section
, Se are the switches to be restored. In addition, the distribution line CB of each switch to be restored (CB for Sa, CB1 for Sb, CB for Sd, CB for Se, and CB for Se)
The reserve force of 5) is calculated by the load calculating means 22 (FIG. 9).
F3). This reserve becomes the reserve for each switch to be restored. Fig. 18 (c) shows the result of rearranging the switch tables for restoration operation in Fig. 18 (b) in descending order of reserve capacity (Fig. 9).
F4). 18 (c), Sa having the maximum reserve is selected as a flexible switch candidate (F5 in FIG. 9) and compared with the section load of the section K33 to which Sa is connected (F6 in FIG. 9).

The reserve capacity of Sa is 100 and the section load of K33 is 30.
Therefore, Sa is registered as an interchange switch (F7 in FIG. 9). Since Sa becomes an interchange switch, section K33 becomes an already restored section and is excluded from the blackout section. The system at this time is shown in FIG. In this state, since the conditions for ending the flexible route are not satisfied (F9 in FIG. 9), the reserve forces of the remaining recovery operation target switches S33, S34, Sc, Sb, Sd, Se are calculated again (see FIG. 9). F3) and rearrange in descending order of reserve capacity (F4 in FIG. 9). The results are shown in Fig. 18 (d). Figure
From 18 (d), S33 and S34 have the same maximum reserve,
The switch S33 adjacent to the already-restored section and having the concession section adjacent to the load side is selected as a candidate switch for restoration operation (see FIG. 19).
F1) and S33, the total section load and the total reserve are calculated (F3 in FIG. 19). Since the total section load of sections K31 and K32 = 70> reserve capacity of Sb = 50, S33 is selected as the switch for restoration operation (F4 in Fig. 19), and the reserve capacity of S33 and the section K32 where S33 is connected. Compare with the section load (F6 in FIG. 19).

Since the reserve capacity of S33 is 70 and the section load of K32 is 30 (F6 in FIG. 9), S33 is registered as an interchange switch (F7 in FIG. 9). Since S33 has become an interchange switch, section K32 becomes an already restored section and is excluded from the blackout section.
The system at this time is shown in FIG. In this state, since the conditions for ending the flexible route are not satisfied (F9 in FIG. 9), the remaining recovery operation target switches Sc, Sd, Se, S32, and S34 are left.
Are calculated again (F3 in FIG. 9) and sorted in descending order of reserve (F4 in FIG. 9). The results are shown in Fig. 18 (e). From Fig. 18 (e), Sc with the maximum reserve is selected as an interchange switch candidate (F5 in Fig. 9) and compared with the reserve of Sc and the section load of section K36 where Sc connects (F in Figure 9).
6). Since the reserve capacity of Sc is 60 and the section load of K36 is 20, Sc is registered as an interchange switch (F7 in FIG. 9).
Since Sc has become an interchange switch, section K36 becomes an already restored section and is removed from the power failure section. Diagram of system at this time
Shown in 14. In this state, since the conditions for ending the flexible route are not satisfied (F9 in FIG. 9), the reserve forces of the remaining recovery operation target switches Sd, S32, S34 and S36 are calculated again (F3 in FIG. 9), and the reserve is prepared. Sort in descending order of strength (F in Figure 9
4). The results are shown in Fig. 18 (f). 18 (f), Sd having the maximum reserve is selected as an interchange switch candidate (F5 in FIG. 9) and compared with the reserve of Sd and the section load of section K34 where Sd is connected (F6 in FIG. 9). . Where the reserve of Sd is
Since the section load of 50 and K34 is 30, Sd is registered as an interchange switch (F7 in FIG. 9).

Since Sd has become a flexible switch, section K
34 is an already restored section and is excluded from the blackout section. The system at this time is shown in FIG. In this state, since the conditions for ending the accommodation route are not satisfied (F9 in FIG. 9), the reserve forces of the remaining recovery operation target switches S32, S35, S36 are calculated again (F3 in FIG. 9), and the reserve force is calculated. Sort in descending order (Fig. 9
F4). The results are shown in Fig. 18 (g). 18 (g) to S
The switches 32 and S36 have the same maximum reserve capacity, are adjacent to the already restored section, and have the concession section adjacent to the load side.
For S32, section load of section K31 = 40> reserve capacity of S31 = 0, and for S36, section load of section K35 = 25> reserve capacity of S35 = 20 (F3 in Fig. 19), so S32 is the recovery operation target. It is selected as a candidate switch (F8 in FIG. 19) and compared with the reserve capacity of S32 and the section load of section K31 to which S32 connects (F6 of FIG. 19). S32 reserve capacity is 40, K31 section load is
Since it is 40 (F6 in FIG. 9), S32 is registered as an interchange switch (F7 in FIG. 9). Since S32 becomes an interchange switch, section K31 has already become a restoration section, and the system at this time is shown in FIG.

In this state, since the condition for ending the flexible route is not satisfied (F9 in FIG. 9), the reserve capacity of the remaining restoration operation target switches S35 and S36 is calculated again (F in FIG. 9).
3), rearrange in descending order of reserve capacity (F4 in FIG. 9).
The results are shown in Fig. 18 (h). From Fig. 18 (h), select S36 with the maximum reserve as a flexible switch candidate (F in Fig. 9).
5) Compare the reserve capacity of S36 with the section load of the section K35 to which S36 connects (F6 in FIG. 9). S36 reserve is 40, K35
Since the section load of (5) is 25, S36 is registered as an interchange switch (F7 in FIG. 9). Since S36 has become an interchange switch, section K35 will be an already restored section and will be excluded from the blackout section.
The system at this time is shown in FIG. Since all the concession sections have already been restored according to FIG. 17, the concession route creation is completed (F9 in FIG. 9). According to the above-mentioned embodiment, even if there is no switch on the power supply side, the unrestored section on the power supply side can be set as the restored section.

[0017]

As described above, according to claim 1 of the present invention, by reducing the number of combinations, it is possible to shorten the time required to create a recovery procedure as compared with the conventional method, and to perform a quick accident recovery operation. Is possible. Further, according to claim 2, even when the power source side switch does not exist or the accommodation reserve capacity is insufficient, it becomes possible to determine the accommodation route so that the unrestored section does not remain on the power source side. .

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of an accident recovery operation device according to the present invention.

FIG. 2 is a sound distribution system diagram.

FIG. 3 is a distribution system diagram when an accident occurs in section K41.

FIG. 4 is a system diagram when Sc is selected.

FIG. 5 is a system diagram when Sb is selected.

FIG. 6 is a system diagram of the end of the interchange route determination.

FIG. 7 is a section load table and a switch table that store section loads of each power failure section.

FIG. 8 shows a recovery target switch and a recovery target switch table that stores a recovery target switch and reserve capacity.

FIG. 9 is a diagram showing a flow of determining an interchange route.

FIG. 10 is a system diagram for explaining another embodiment in a healthy state.

FIG. 11 is a system diagram in which an accident has occurred in the system of CB3.

[Fig. 12] System diagram for sequentially recovering from power failure sections.

[Fig. 13] System diagram for sequentially recovering from power failure sections.

[Fig. 14] System diagram for sequentially recovering from power failure sections.

[Fig. 15] System diagram for sequentially recovering from power failure sections.

[Fig. 16] System diagram for sequentially recovering from a power failure section.

[Fig. 17] System diagram for sequentially recovering from power failure sections.

FIG. 18 is a table used in determining a flexible route.

FIG. 19 is a flowchart showing a flow of setting the interchangeable switch having the same reserve capacity.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Teleconverter device 2 Computer 3 Operator console 4 Storage device 21 Monitoring / control means 22 Load calculation means 23 Flexible transmission procedure creation means

Claims (2)

[Claims] 1. An accident in a distribution system in which the distribution system is monitored, a power supply failure section on the distribution system is detected based on the monitoring information, and flexible power transmission is performed from the other distribution line to the power supply failure section. When creating the interchange power transmission procedure in the restoration operation device, only the switches on the distribution line adjacent to the concession section are the restoration target switches, and the switches are selected in descending order of reserve capacity of the distribution line that will be the power source. However, when each switch satisfies the following two conditions, from the load before the power supply failure in the concession section occurs,
The reserve capacity of the switch to be restored is larger. The switch to be restored can be controlled remotely. At that time, it was registered as an interchange switch, and the concession section adjacent to the accommodation switch was set as an already-restored section, and the following three conditions and the section to be accommodated were all already-restored sections. All the switches to be restored have been registered as interchange switches. The remaining reserve of the switch to be restored became smaller than the load before the power supply failure in the concession section. An accident recovery operation device, characterized in that when any one of the above is satisfied, the switch is operated as the end of the interchange power transmission procedure. 2. An accident in a distribution system in which a distribution system is monitored, a power supply failure section on the distribution system is detected based on the monitoring information, and flexible power transmission is performed from the other distribution line to the power supply failure section. When creating the interchange power transmission procedure in the restoration operation device, only the switches on the distribution line adjacent to the concession section are the restoration target switches, and the switches are selected in descending order of reserve capacity of the distribution line that will be the power source. In addition, when there are multiple recovery operation target switches with the same reserve capacity,
A switch with the restoration target selected in the following priority order, adjacent to the already restored section and the concession section adjacent to the load side. A switch that is adjacent to the already restored section and the concession section is adjacent to the power supply side. Switch other than. When the selected switch is the priority order, the total section load in the healthy blackout section group that can be systematically interchanged from the relevant switch and the reserve capacity of other restoration target switches connected to the section group When the total section load is larger, the relevant switch is selected as the target switch for restoration operation, and when the total reserve is larger, the relevant switch is targeted for restoration operation. If there is more than one restoration operation target candidate switch whose total section load is larger, the restoration operation target candidate switch with the next highest priority is selected. Compares the total reserve capacity with the total section load in the following priority order, and the switch with the larger difference between the total reserve capacity and the total section load. If the difference is the same, the switch with the larger total section load. The switch on the more load side if the total section loads are the same. When the selected switch has the above priority,
When the switch is selected as the switch for recovery operation, and the selected switch satisfies the following conditions, the power supply of the switch for recovery operation is applied from the load before the power failure in the concession section. The reserve of electric wire is larger. The switch to be restored can be controlled remotely. The switch to be restored is registered as an interchange switch, and the concession section adjacent to that switch is the already restored section. When any of the following conditions is satisfied, all the concession sections are already restored sections. . All the switches to be restored have been registered as interchange switches. The reserve capacity of the remaining switch to be restored is smaller than the load before the power failure in the concession section. An accident recovery operation device characterized in that a switch is operated at the end of the interchange power transmission procedure.