JPH03183323A - Power system trouble recovering apparatus - Google Patents

Abstract

PURPOSE:To form recovering sequence for a power system trouble by applying knowledge stored in recovery knowledge storing means to the priority of a set facility to be recovered and the state of the stored facility. CONSTITUTION:Priority setting means 66 applies knowledge regarding priority varied according to seasons of a facility for forming a power system 1 stored in priority knowledge storage means 65 to the state of the system 1 stored in facility data storage means 61 to set priority to the facility to be recovered of a power system trouble. Recovery sequence forming means 64 applies knowledge regarding recovery of the trouble stored in recovery knowledge storage means 63 to the priority of the facility to be recovered, set by the means 22 and the state of the system 1 stored in the means 1 to form recovery sequence for the trouble of the system 1 and outputs it to a CRT unit 7 and power system monitor control means 62.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a power system fault recovery device that creates an accurate recovery procedure in the event of a power system fault.

(Prior Art) When equipment that makes up an electric power system, such as a power transmission line or a transformer, stops due to an accident, customers who use those equipment to receive electricity will experience a power outage.

Therefore, in order to save these consumers from a power outage, a method is generally used to send power from another healthy system, and this method is called accident recovery. This accident recovery operation is carried out in a system state different from normal without using the equipment where the accident occurred (hereinafter referred to as the accident equipment).Therefore, the priority of the restoration target at that time, the power supply capacity and It is necessary to perform accident recovery operations after carefully considering the load balance, the capacity of power transmission lines and transformers, the installation status of maintenance relays, etc., and confirming that there are no problems.

(Problem to be solved by the invention) Accidents in the power system that occur on a large scale have a large social impact, and prompt restoration is required. Under such circumstances, it is important to prioritize restoration targets according to the time. difficult to consider,
Accident recovery operations based on these priorities become extremely difficult.

For example, consider prioritizing the restoration of trains during morning commuting hours, prioritizing the restoration of recreational areas during summer holidays, and prioritizing the restoration of event venues when there is an event such as a summit. accident recovery operations must be carried out.

Against this background, in recent years, technology has been developed to automatically create procedures for accident recovery operations using computers, but this technology has not yet been established.

The present invention has been made in view of the above-mentioned circumstances, and is an electric power system accident recovery device that is capable of creating a recovery procedure that takes into consideration the priority of equipment to be restored depending on the time in the process of creating an accident recovery procedure. is intended to provide.

[Structure of the invention] (Means for solving the problem) The structure for achieving the above object is described in the first embodiment corresponding to the embodiment.
To explain using a diagram, the present invention includes an equipment data storage means 61 that stores power system equipment data including status data of a monitored system, and stores knowledge regarding priorities that change depending on the time of the equipment that constitutes the monitored system. and a priority setting means 66 that uses the contents of the equipment data storage means 61 and the contents of the priority knowledge storage means 65 to set priorities for equipment to be restored from an electric power system accident.
and a recovery procedure creation means 64 that creates a restoration procedure for a power system accident using the priority of the equipment to be restored set by the priority setting means 66, the contents of the equipment data storage means 61, and the contents of the restoration knowledge storage means 63. It was composed of.

(Function) Status data input from the monitored system is input to the equipment data storage means 61 and stored. The priority knowledge storage means 65 stores knowledge regarding the priorities of the equipment constituting the monitored system, which change depending on the season. The priority setting means 66 applies the knowledge stored in the priority knowledge storage means 65 to the state of the equipment stored in the equipment data storage means 61 to set priorities for the equipment to be restored from the power system accident.

Further, the recovery knowledge storage means 63 stores knowledge related to recovery from power system accidents. The recovery procedure creation means 64 applies the knowledge stored in the recovery knowledge storage means 63 to the priority of the equipment to be restored set in the priority setting means 66 and the state of the equipment stored in the equipment data storage means 61. and create recovery procedures for power system accidents.

(Example) Examples will be described below with reference to the drawings.

FIG. 1 is a functional block diagram of an embodiment of the power system accident recovery support device according to the present invention. In FIG. 1, 1 is an electric power system, 2.3.4.5 is an information transmission device between the electric power system 1 and a computer 6 to be described later, and 2 is an upstream transmission from the electric power system 1 to the electronic computer I16. station, 3 is also an upstream receiving station, 4 is a downstream receiving station from electronic meter xm6 to power system 1,
Similarly, 5 is a downstream receiving station. Reference numeral 6 is an electronic meter X that creates a recovery procedure based on the status of the power system 1 obtained via the transmitting station 2 and receiving station 3. 7 is a CRT device that displays the recovery procedure created by the computer 6; In the electronic computer 6, reference numeral 61 models the power system 1 and further stores the state thereof, equipment data storage means, θ2 inputs the state of the power system 1 and stores it in the equipment data storage means 61, X, Power system monitoring and control means transmits a restoration procedure obtained by a restoration procedure creation means 64, which will be described later, as a control signal through the downlink transmitting station 5 and the downlink receiving station 4; Priority knowledge storage means 66 stores knowledge regarding power system accidents by applying the knowledge stored in the priority knowledge storage means 65 to the state of the power system 1 stored in the equipment data storage means 61. Priority setting means for setting priorities for equipment to be restored; reference numeral 63 denotes a recovery knowledge storage means for storing knowledge related to restoration from power system accidents; reference numeral 64 represents the priority of the equipment to be restored and the equipment set by the priority setting means 66; A recovery procedure for an accident in the power system 1 is created by applying the knowledge stored in the recovery knowledge storage means 63 to the state of the power system 1 stored in the data storage means 61, and this is
This is means for creating a recovery code output to the RT device 7 and the power system monitoring and control means 62.

FIG. 2 shows the output of the recovery procedure to the CRT device 7 in the power system accident recovery support device. In the diagram, each generator #1
．． #2. It shows how #3 is connected to the power system, and the boxed area represents the electrical station. Boxes with diagonal lines inside indicate power outage stations, and boxes without hatching indicate charging stations. Further, the area surrounded by dotted lines indicates high-priority equipment and power transmission lines for restoring high-priority equipment.

FIG. 3 is a flowchart showing a process for creating a recovery procedure for outputting as shown in FIG. 2 for a CRT device, and is a process for the computer as a whole. first,
In step S31, the power system monitoring and control means 62 takes in the state of the power system 1, determines the power outage state and charging state of each facility, and outputs the results to the CRT device 7. In step S32, priority is set for the equipment to be restored according to the time period.

In the output example shown in FIG. 2, the O electrical station is displayed with a high priority. In step S33, a recovery procedure is created according to the priority of the equipment to be restored determined in S32, and outputted to the CRT device 7. In the output example shown in Figure 2, the recovery procedure for restoring the O electric station with priority is the DJ line,
The JO line is displayed.

In step 834, the restoration procedure determined in step 333 is executed via the power system monitoring and control means 62.

Next, in step S35, it is determined whether or not accident recovery has been completed, and if it has not been completed, the process returns to step S31.
If completed, the process ends.

Since the above-mentioned processing contents are the processing when the electronic computer is viewed as a whole, the individual processing shown in FIG. 3 will be explained below.

First, the process of step S31 in FIG. 3 will be explained. Here, using FIG. 5, power failure charging determination for equipment will be explained using the power system shown in FIG. 2 as an example.

First, in step S51, a generator in operation or undergoing trial power transmission,
The interchange power is placed in a charging state. In the case of FIG. 2, if #1 heavy electrical machine and #3 interchangeable power are in operation or during trial transmission, #1 heavy electrical machine and #3 interchangeable power are in a charging state. In step S52, all the equipment that has been brought into a charging state in step S51 is taken out. In step 353, all equipment connected to the equipment taken out by Stella 7S52 is brought into a charging state. For example, if #1 heavy electrical machine and #3 interchange power are the equipment taken out in step S52, since #1 heavy electrical machine is connected to electric station A, electric station A is newly charged, and S, #3 Since the interchange power is connected to electric station B, electric station B is newly placed in a charging state. Step S
In step S54, it is determined whether or not the processes of steps S52 and S53 have been carried out for all the equipment, and if there is a piece of equipment that has not been carried out, the process returns to step S52 and the above-mentioned processes are performed, and if not, the process for determining power outage charging is ended. do. In the above example, since electric station A and electric station B are newly in a charging state, the equipment connected to them, that is, the AC line, BDI, and BEI, is in a charging state. In this way, by repeating steps S52 to S54, the process of determining power failure charging of the equipment is performed.

Next, the inference processing of Stellaf S32 in FIG. 3 will be explained using FIG. 6. In step S61, the state of the power system 1 stored in the equipment data storage means 61 is stored as short-term memory. In step S62, one piece of knowledge is extracted from the priority knowledge storage means 65, and in step S63, the condition part of the knowledge extracted in step S62 is compared with the state of short-term memory, and whether there is any that satisfies the condition part. Determine whether or not. If there is something that satisfies the condition part, the process proceeds to step S64, and if there is nothing that satisfies the condition part, the process proceeds to step S65. In step S64, the knowledge whose condition part is satisfied is added to the competing knowledge set and stored.

Then, in step S65, it is determined whether all the knowledge has been applied. If all the knowledge has been applied, the process advances to step 866; if other knowledge exists, the process returns to step S62.
The steps 7362, S63, and S64 are repeated. In step S66, it is determined whether there is any knowledge in the competing knowledge sets, and if even one is saved, the process proceeds to step S67, and if there is no knowledge set, the process proceeds to step 368. In step S67, the knowledge with the highest priority is selected from the competing knowledge sets, and priority is assigned to the short-term memory recovery target equipment according to the execution unit. Furthermore, the competing knowledge sets are initialized, and the process returns to step S62, targeting all knowledge again. On the other hand, in step S68, the priority assigned to the equipment to be restored from the short-term memory is outputted to step S33 in FIG.
32 ends.

Next, the inference processing in step S33 in FIG. 3 will be explained using FIG. 7. In step S71, the priority of the equipment to be restored and the power system 1 output from step 332 in FIG.
The state of is stored as short-term memory. In step S72, one piece of knowledge is extracted from the recovery knowledge storage means 63, and in step S73, the condition part of the knowledge extracted in step S72 is compared with the state of short-term memory, and it is determined whether the condition part is satisfied or not. Determine. If the condition part is satisfied, the process advances to step S74, and if it is not satisfied, the process advances to step S75. Stella 7S74 internally (Stella 7S741) determines the execution part of knowledge for which the condition part is satisfied, and if it is a recovery procedure, saves the execution part of knowledge as a possible recovery procedure (step 5742).
L, otherwise store the knowledge in a competing knowledge set (
Step 5743 ). In step 375, it is determined whether all the knowledge has been applied. If all the knowledge has been applied, the process proceeds to step 376, and if there is any other knowledge that has not been applied, the process returns to step 372 and the steps 372 to S7
Repeat step 4.

In step 376, it is determined whether or not there is a competing knowledge set. If there is even one, the process advances to step S77; if there is none, the process advances to step S878.

In step S77, one piece of knowledge with the highest priority is selected from the competing knowledge sets, its execution part is executed on the short-term memory, the competing knowledge set is initialized, and the step is performed again targeting all knowledge. Return to S72. Step 37
At step 8, the plurality of saved recovery procedures are outputted to step S34 in FIG. 3 and displayed on the CRT device 7 at the same time, and the processing at step S33 in FIG. 3 is ended.

Next, in step S34 in FIG. 3, the restoration procedure is executed by sending the restoration procedure inputted from step 333 as a control signal to the power system 1 through the downlink transmitting station 5 and the downlink receiving station 4.

Next, the process of step S35 in FIG. 3 will be explained using FIG. In step S35, as shown in the flowchart, the system status is determined to find that there are no unrestored power sources (step S81), no supply problems (step S82), and no overloads (step S83).
If there is no abnormal voltage (step 584) and the system is stable (step 585), it is determined that the accident recovery has been completed. Otherwise, it is considered incomplete.

Next, a configuration example of the equipment data storage means 61 will be explained.

FIG. 4 explains the state of the power system 1 stored in the equipment data storage means 61, taking the power system shown in FIG. 2 as an example. In Figure 4, the part surrounded by parentheses forms a collection of data regarding one piece of equipment, and the first element within 0 is the equipment name,
The second element is the equipment type, and the third and subsequent elements are data for each equipment type. In the case of electrical station data, the third and subsequent elements are composed of bus bar data, connectable equipment data, load data, etc. For example, at electric station A, the bus bar is for charging, and the bus bar is #
This shows that a single electric machine is connected and that an AC line can be connected to the bus bar. Furthermore, the bus bar of electric station B is for charging, and it is connected to the #2 generator, #3 interchange power, BO line, and BE line, indicating that there are no other connectable facilities. At Electric Station C, the busbar is out of power and there is no connection equipment.
The connectable facilities are the AC line, CDI, CG line, and CH line, and # indicates that the importance of the load connected to electric station C is f rank. Here, the importance of a load is determined relatively within the entire power system; for example, a
.

They are distinguished in descending order of importance, such as b, c, d, e, and f ranks. Furthermore, in the case of generator data, the third and subsequent elements consist of the operating status and connected equipment. For example, it is shown that heavy electrical machine #1 is in a trial power transmission operation and is connected to electrical station A. Furthermore, in the case of power transmission line data, the third and subsequent elements are comprised of charging/power outage status and connectable equipment data. For example, the AC line is out of power, and electric station A
This shows that it can be connected to electric station C.

Next, a specific example of the knowledge regarding the priority of the equipment to be restored that changes depending on the time of year will be explained using FIG. 9, which is stored in the priority knowledge storage means 65. Rule 1 is that if the 11th section holds that the hours are between 5:00 and 9:30 in summer,
This shows that the power station is more important than the power station M. Rule 2 shows that if Part 11 holds true, that is, the time is between 13:00 and 18:00 in summer, then M electric station is more important than 0 electric station. Furthermore, Rule 3 is a rule in which the 11th part always holds true, indicating that the 0 electricity station is always more important than the 0 electricity station. Therefore,
When there are these three rules, if it is between 5:00 and 9:30, O Electrical Station will be the most important than rule 1 and rule 3, and if it is between 1:00 and 18:00, then rule 2 and rule 3. Therefore, the M electric station becomes the most important. In the example shown in Figure 2, the accident occurred between 5:00 and 9:30, and the 0 electricity station is the most important.

Next, a specific example of the knowledge regarding creation of a recovery procedure stored in the recovery knowledge storage means 63 will be explained.

Knowledge related to creating recovery procedures includes knowledge of accident recovery procedures and knowledge for prioritizing accident recovery procedures.

Specific examples of these knowledge are shown in FIGS. 10 and 11, respectively, and an example of application will be explained using the situation shown in FIG. 2 as an example.

Figure 10 is an example of knowledge about accident recovery procedures. Focusing on electric station C, f! of electric station C is shown. If a power line goes out and there is an AC line as a power transmission line that can be connected to that bus, then the bus at electric station A is charged and an AC line is used as a power transmission line that can be connected to that bus.
A TF section is established in which there is a line and electric station C and electric station A are different. As a result, a restoration procedure is created in which the bus line of electric station C and the f line of electric station A are restored using the power transmission line AC line.

FIG. 11 is an example of knowledge for prioritizing recovery procedures. In this case, focusing on electric station C and electric station I, and assuming that the load of electric station C is more important than the load of electric station 11 that the busbar of electric station ■ is restored using electric station Dcr) fR: line and transmission line DI line, and electric station C has a more important load than electric station ■. section is established. As a result, the recovery procedure of restoring the busbar of electric station C using the busbar of electric station A and the power transmission line AC line was such that the busbar of electric station I was restored using the busbar of electric station A and the transmission line DIi[! It is given higher priority than the recovery procedure that uses .

[Effects of the Invention] As explained above, according to the present invention, when the accident recovery operation procedure is automatically created by a computer, the recovery procedure is created in consideration of the priority of the equipment to be restored depending on the time. Therefore, since knowledge can be easily replaced, it is possible to flexibly respond to events such as summits.

[Brief explanation of drawings]

Fig. 1 is a functional block diagram of an embodiment of the power system fault recovery device according to the present invention, Fig. 2 is an output side diagram of the recovery procedure according to the present invention, and Fig. 3 is an output to a CRT device as shown in Fig. 2. FIG. 4 is a side view of the configuration of the equipment data storage means, FIG. 5 is a flowchart showing the process for determining power outage charging of the equipment in step S31 of FIG. 3, and FIG. A flowchart showing the processing of the priority setting means, FIG. 7 is step S in FIG.
8 is a flowchart showing the processing in step S35 of FIG. 3, FIG. 9 is a side view of the configuration of the priority knowledge storage means, and FIG. 10 is the restoration knowledge storage means. FIG. 11 is a knowledge side diagram of the accident recovery procedure in the configuration example, and FIG. 11 is a knowledge side diagram for prioritizing the recovery procedure in the configuration example of the recovery knowledge storage means. 1...Power system 2...Uplink transmitting station 3...
・Upstream receiving station 4...Downstream receiving station 5...Downstream transmitting station 6...Electronic computer 7...CRT device 61...Equipment data storage means 62...Power system monitoring and control means 63...・Recovery knowledge storage means 64...Recovery procedure creation means 65...Priority knowledge storage means 66...Priority setting means

Claims (1)

[Claims] equipment data storage means for storing power system equipment data including status data of the monitored system; priority knowledge storage means for storing knowledge regarding priorities that change depending on the season of equipment forming the monitored system; and the equipment data. A priority setting means for setting a priority for equipment to be restored from an electric power system accident using the contents of the storage means and the contents of the priority knowledge storage means, and a recovery knowledge storage means for storing knowledge regarding restoration for an electric power system accident. and a recovery procedure creation means for creating a recovery procedure for an electric power system accident using the priority of the equipment to be restored set by the priority setting means, the contents of the equipment data storage means, and the contents of the recovery knowledge storage means. A power system accident recovery device characterized by: