JPH01148023A - Release supporting device for electric power system accident - Google Patents

Abstract

PURPOSE:To offer an operator the feeling of security, by displaying a plurality of procedures studied in a process for creating a release procedure, and a discriminated optimum release procedure, with the color conversion of an equipment. CONSTITUTION:An electric power system accident release supporting device is composed of information transmitters 2-5 between a power system 1 and an electronic computer 6, the computer 6, and a CRT device 7. The electronic computer 6 is provided with an equipment data base 61 for modelling the power system 1 to be stored, a power system monitoring and controlling mechanism 62, an intelligence base 63, an inference mechanism 64, and an equipment color converting mechanism 65. The input of a state data from the power system 1, to the equipment data base 61 is provided and is stored, and in the intelligence base 63, an intelligence in relation to the creation of a release procedure and an intelligence for selecting one optimum release procedure from a plurality of release procedures are stored, Besides, by the inference mechanism 64, the stored intelligence of the intelligence base 63 is adequately used, and the release procedure is created. At the time of the creation, the release procedure among the candidates and the release procedure adopted from the candidates are displayed with color conversion.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a power system accident recovery device that accurately informs an operator of recovery procedures in the event of a power system accident.

(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 performed under a system condition different from normal without using the equipment where the accident occurred (hereinafter referred to as accident equipment). Therefore, it is necessary to carefully consider the balance between power supply capacity and load, the capacity of power transmission lines and transformers, the installation status of protective relays, etc., and confirm that there are no problems before performing accident recovery operations.

(Problem to be solved by the invention) A large scale accident in the power system has a large impact on society, so prompt recovery is required, and under such circumstances, the above-mentioned accident recovery operations are extremely difficult. Become something.

Against this background, in recent years, technology has been developed to automatically create procedures for accident recovery operations using computers, but this technology still needs to be established.

The present invention has been made in view of the above-mentioned circumstances, and by clearly indicating a plurality of recovery procedures considered in the process of creating an accident recovery procedure and a recovery procedure selected as being determined to be optimal, The purpose is to provide a power system accident recovery support device that can give operators a sense of security.

[Structure of the invention]

(Means for solving the problem) A first configuration corresponding to the embodiment to achieve the above purpose.
To explain using a diagram, the present invention includes an equipment database 61 that stores power system equipment data including status data of monitored systems, a knowledge base 63 that stores knowledge regarding recovery from power system accidents, and the contents of this equipment database. an inference mechanism 64 that creates a recovery procedure for a power system accident using the information and the contents of a knowledge base; a plurality of recovery procedures created as candidates in this inference mechanism; and a recovery procedure particularly adopted among the plurality of recovery procedures. an equipment color changing mechanism 65 for discriminating the procedure; and a CRT device 7 for displaying the discrimination results.
Consisting of 9.

(Function) Status data input from the power system is input to the equipment database 61 and stored. The knowledge e-63 stores knowledge regarding the creation of recovery procedures and knowledge about selecting the optimal one from among a plurality of recovery procedures. Reasoning mechanism 6
In step 4, a recovery procedure is created by applying the knowledge stored in the knowledge base 63 to the power system status stored in the equipment database. Then, when creating a recovery procedure, the recovery procedures that have been selected as candidates and the nine recovery procedures that have been adopted among them are displayed in different colors.

(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 a power system, 2, 3, 4.5 are information transmission devices between the power system 1 and a computer 6, which will be described later, and 2 is an information transmission device from the power system 1 to the computer 6. 3 is also an upstream receiving station, 4 is a downstream receiving station from the computer 6 to the power system 1, 5
is also a downstream transmitting station. 6 is a computer and transmitting station 2
A recovery procedure is created based on the state of the power system 1 obtained through the receiver station 3 and the receiving station 3. 7 is a CRT device that displays the recovery procedure created by the computer 6; Further, in the electronic computer 6, 61 models the power system 1, and furthermore,
An equipment database 62 that stores the state of the power system 1 inputs the state of the power system 1 and stores it in the equipment database 61, and a recovery procedure obtained by an inference mechanism 64 to be described later.
A power system monitoring and control mechanism that transmits control signals through the downlink transmitting station 5 and the downlink receiving station 4; 63 is knowledge that stores knowledge about creating a recovery procedure and knowledge about selecting an optimal one from a plurality of recovery procedures; The base 64 is an inference mechanism that applies the knowledge stored in the knowledge base 63 to the state of the power system 1 stored in the equipment database 61 to create a recovery procedure and outputs it. 65 is the state of the power system 1 that is taken in via the power system monitoring and control mechanism 62 and a plurality of recovery procedures that are output from the inference mechanism 64;
This is an equipment color changing mechanism that outputs the restoration procedure selected from among them to the CRT device 7 in a different color.

FIG. 2 shows the output side port to the CRT device 7 of the recovery procedure in the power system accident recovery support device. In the figure, each generator φ
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. Furthermore, the thick line portion surrounded by dotted lines indicates power transmission lines that are ``being considered as a possible recovery procedure'' to restore the power station that was out of power.

FIG. 3 is a flowchart showing a process for creating a rounding recovery procedure to be outputted as shown in FIG. 2 to a CRT device, and is a process for the computer as a whole. First, in Stella 7'31, the power system monitoring and control mechanism 62 captures the state of the power system 1, determines the power outage state and charging state of each equipment, and changes the equipment color based on the results of determining the faulty equipment. By the mechanism 65, for example, power outage equipment is colored green, Toden equipment is colored white, and accidental equipment is colored cyan (blue-green).
Output to 7. In step 32, a plurality of possible restoration procedures are extracted, and the equipment color changing mechanism 65 outputs the extracted parts to the CRT device 7, for example, by making the corresponding parts red. In the output example shown in FIG. 2, the AC line, CD line, DI line, and DJ line are displayed in red. In step 33, only one optimal restoration procedure is determined from among the plurality of restoration procedures determined by Stella f32, and the equipment color change mechanism 65 outputs the optimal one to the CRT device 7 as white, for example. In the output example of FIG. 2, if the optimal recovery procedure is the AC line, this AC line will be displayed changing from red to white. In step 34, the optimal recovery procedure determined in step 33 is executed via the power system monitoring and control mechanism 62. Next, in step 35, it is determined whether or not accident recovery has been completed. If it has not been completed, the process returns to step 31, and if it has been completed, the process is terminated.

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 31 in FIG. 3 will be explained. This process consists of two processes: determination of equipment power outage and charging, and determination of faulty equipment. The results of the accident determination are output to the above-mentioned continuous equipment color changing mechanism 65, and, for example, the faulty equipment is displayed in cyan on the CRT device 7. Ru. 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 Stella 7'51, the generator in operation or on trial power transmission and the interchangeable power are brought into a charging state. In the case of Figure 2,
Assuming that the 1st generator and the 3rd interchange power are in operation or trial transmission, the φ1 generator and the φ3 interchangeable power are in a charging state.

In step 52, all the equipment that has become charged in step 51 is taken out. In step 53, all equipment connected to the equipment taken out in step 52 is brought into a charging state. For example, φ1 heavy electric machinery and φ3 interchange power
Assuming the equipment taken out in step 52, the N1 generator is connected to electric station A, so electric station A is newly charged, and the +3 interchange power is connected to electric station B, so it is not charged. Place B is newly charged. In step 54, it is determined whether or not the processes in steps 52 and 53 have been carried out for all equipment. If there is any equipment for which the process has not been carried out, the process returns to step 52 and the above-mentioned processes are performed. If not, the process for determining power outage charging is performed. finish. 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, BD line, and BE line, is in a charging state. By repeating the STELLA f52 or C:i step 54 in this manner, the equipment power failure charging determination process is performed. As described above, the results are displayed on the CRT device 7.

Next, the inference processing at step 32 in FIG. 3 will be explained using FIG. 6. In step 61, the system status is stored as short-term memory. In step 62, one piece of knowledge is extracted from the knowledge pace, and in step 63, the condition part of the knowledge extracted in step 62 is compared with the state of short-term memory, and it is determined whether the condition part is satisfied. . If the condition part is satisfied, the process proceeds to step 64; if not, the process proceeds to step 65. Step 64
Then, inside it (Stella f641), determine the execution part of the knowledge whose condition part is satisfied, and if it is a recovery procedure, save the execution part of the knowledge as a possible recovery procedure (step 642), otherwise L stores the knowledge in a competing knowledge set (step 643). In step 65, it is determined whether all the knowledge has been applied. If all the knowledge has been applied, the process proceeds to step 66; if there is any other knowledge that has not been applied, the process returns to step 62 and processes steps 62 to 64. Repeat. In step 66, it is determined whether there is a competing knowledge set. If there is one, the process proceeds to step 67; if there is none, the process proceeds to step 68. In step 67, 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 62. The Stella f68 outputs the plurality of stored recovery procedures to the equipment color conversion mechanism 65, displays them in red, for example, on the CRT device 7, and ends the process of step 32 in FIG.

Next, the inference processing at step 33 in FIG. 3 will be explained using FIG. 7. Step 32 in Figure 3 for Stella F71
Save the multiple recovery procedures output in short-term memory. In step 72, one piece of knowledge is extracted from the knowledge pace, and in step 73, the condition part of the knowledge extracted in step 72 is compared with the state of short-term memory, and it is determined whether there is one that satisfies the condition part. do. If there is something that satisfies the condition part, the process proceeds to step 74; if there is nothing that satisfies the condition, the process proceeds to step 75. In step 74, the knowledge whose condition part is satisfied is added to the competing knowledge set and stored. Then, in step 75, it is determined whether all the knowledge has been applied. If all the knowledge has been applied, the process proceeds to step 76, and if there is other knowledge, the process returns to step 72 and steps 72, 73, and 74 are performed. Repeat each process, step 7
In step 6, it is determined whether there is any knowledge in the competing knowledge sets, and if even one knowledge set is saved, the process proceeds to Stella f77, and if there is less than one knowledge set, the process proceeds to Stella f7B. In step 77, one piece of knowledge with the highest priority is selected from among the competing knowledge sets, and priority is given to a plurality of short-term memory recovery procedures according to the execution part. Furthermore, initialize the competing knowledge set,
The process returns to step 72, targeting all knowledge again. On the other hand, in step 78, the recovery procedure with the highest priority from the short-term memory is outputted as the optimum recovery procedure to the equipment color conversion mechanism 65, and displayed on the CRT device 7 in white, for example, and the process ends.

Next, the process of step 35 in FIG. 3 will be explained using FIG. 8. In step 35, as shown in the flowchart, the system status is determined and there is no unrestored power supply (step 81), there is no supply problem (step 82),
If there is no overload (Stella F83), no abnormal voltage (Step 84), and the grid is stable (Step 85),
It is determined that accident recovery is complete. Otherwise, it is considered incomplete.

Next, a configuration example of the equipment database 61 will be explained.

FIG. 4 explains the state of the power system 1 stored in the equipment database 61, using the power system shown in FIG. 2 as an example. In Figure 4, the part surrounded by parentheses forms a collection of data for one piece of equipment K1m, the first element in parentheses is the equipment name, the second element is the equipment type, and the third and subsequent elements are the equipment type. This is the data for each time. 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, in electric station A, the bus bar is for charging, a ÷1 heavy electric machine is connected to the bus bar, and 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 φ2 generator, φ3 interchange power, BD line, and BE line, indicating that there are no other connectable facilities. In addition, the bus bar of electric station C is out of power, the connected equipment is ka<, the connectable equipment is AC line, CD line, CG line, and CH line, and the importance of the load connected to electric station C is f. It shows the rank of Jin. Here, the load importance is determined relatively within the entire power system, and is classified in descending order of importance, such as a, b, a, d, . . ., f rank. There is.

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 the S1 generator is in trial power transmission operation and is connected to the electric station AK. 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, A
Line C is out of power, indicating that it can be connected to electric station A and electric station C.

Next, a specific example of the knowledge regarding the creation of a plurality of recovery procedures stored in the knowledge base 63 and the knowledge for selecting one of the recovery procedures will be explained.

Knowledge related to creating multiple recovery procedures includes knowledge of accident recovery procedures and knowledge of manipulating short-term memory for accident recovery procedures, and knowledge of selecting the optimal one from among multiple recovery procedures. has the knowledge to prioritize recovery steps, and
There is knowledge and removal of recovery procedures. Specific examples of these knowledge are shown in FIG. 9, FIG. 10, FIG. 11, and FIG. 12, respectively, and an example of application will be explained using the situation shown in FIG. 2 as an example.

Figure 9 is an example of knowledge about accident recovery procedures. Focusing on electric station C, there is a power outage at the bus bar of electric station C, and there is an AC line as a power transmission line that can be connected to the bus. 1. The bus bar of A is charged, the AC line is the power transmission line that can be connected to the bus bar, and electric station C and electric station A are different.
Part 2 is established. As a result, the bus line of electric station C and the bus line of electric newcomer.

A restoration procedure is created to restore the power transmission line using the AC power transmission line.

Figure 1O is an example of knowledge for manipulating short-term memory for accident recovery procedures. In this case, if the accident equipment is a CH line, CI
(There is an IF section indicating that this power transmission line CH line is the faulty equipment, and as a result, the data of the power transmission line CH line that can be connected to that bus line is deleted.

FIG. 11 is an example of knowledge for prioritizing recovery procedures. In this case, we focus on electric station C and electric station I, and assume that the load of electric station C is electric station! If the load is more important than the load, the bus of electric station C will be restored using the bus of electric station A and the transmission line AC line, and the bus of electric station I will be restored using the bus of electric station A and the transmission line D.
An IF section is established in which power is restored using the I line, and electric station C has a more important load than electric station ■. As a result, the restoration procedure is to restore the busbar of electric station C using the busbar of electric station A and the power transmission line AC line, but the busbar of electric station ■ is restored using the busbar of electric station A and the transmission line DI line. It is given a higher priority than the recovery procedure.

FIG. 12 is an example of knowledge for deleting recovery procedures.

In this case, if AC4jl were to charge, the Hueranti phenomenon would occur, but if the bus of electric station C is restored using the bus of electric station A and the AC line of the transmission line, and the AC line of the transmission line is charged, the Hueranti phenomenon would occur. The IF section is established. As a result, the restoration method 11I of restoring the busbar of electric station C using the busbar of electric station A and the power transmission line AC line is deleted.

FIG. 13 is a functional block diagram of another embodiment of the power system accident recovery support device according to the present invention. In this embodiment, the created recovery procedure is explained to the operator in charge of the accident recovery operation so that the operator understands the procedure. 13th
In the figure, the same functional parts as in FIG. 1 are denoted by the same reference numerals, and the explanation thereof will be omitted.

In the figure, reference numeral 8 denotes an input device that receives an explanation request from an operator and starts an explanation mechanism to be described later.

Further, in the electronic computer 6, 66 is an inference process 7 isle that stores the inference process of the inference mechanism 64, and 67 is an inference process file 66 that retrieves the situation at the time of coughing based on an explanation request from the input device 8. , is an explanation mechanism that passes information on a plurality of recovery procedures and the optimal recovery procedure to the equipment color change mechanism 65.

FIG. 14 is a flowchart for explaining the operation, which will be used in the following explanation. First, step 1 in case an accident occurs.
Inference is made in step 01 to create a recovery procedure and estimate its execution time. The result is output to the CRT device, and at the same time, the inference status is stored in the inference process file 66. If the operator feels that there is a lack of understanding in step 102, he specifies an arbitrary time using the input device 8 in step 103. Stella f104 extracts the situation at the requested time from the inference process file 66 and explains it.

In this case, for example, a plurality of recovery procedures will be displayed in red, and the optimum recovery procedure among them will be displayed in white on the CRT device 7 for explanation.

FIG. 15 is a flowchart showing the inference processing in step 101 of FIG. Now step 31.3
2.33, 34.35 are the same as those shown in FIG. 3, so their explanation will be omitted. In step 110, the time required for the optimal recovery procedure is estimated and calculated using the method described below.
It is output to the inference process file 66.

FIG. 16 is a specific example of knowledge for estimating the time required for a recovery procedure. Using this knowledge, the procedure for estimating the time required for the restoration procedure will be explained using the power system shown in FIG. 2 as an example of application.

Suppose that the optimal restoration procedure is to restore the busbar of electric station C using the busbar of electric station A and the AC line of the power transmission line, but the busbar of electric station C and the AC line of the power transmission line are not connected, and the An IF that the busbar of station A and the AC transmission line are not connected, electric station C is a manned electric station, and electric station A is a manned electric station.
If this is true, the estimated time required is 10 minutes.

As is clear from the above description, if the operator requests an explanation after the creation of the recovery procedure by inference is completed, the inference process is explained, so that the operator's understanding can be obtained.

Further, in each of the above embodiments, color changing by an equipment color changing mechanism is used as a means for distinguishing and displaying a plurality of recovery procedures and the optimal recovery procedure, but a plink function is added to this equipment color changing mechanism. You may want to emphasize the differences. This allows the operator to understand more intuitively.

〔Effect of the invention〕

As explained above, according to the present invention, when automatically creating a procedure for accident recovery operations using a computer, a plurality of recovery procedures considered in the process of creating the recovery procedure and a recovery procedure determined to be optimal are installed. By changing the color of the K, it can be clearly indicated, giving the operator a sense of security.
As a result, operators can quickly take correct action even in emergency situations.

[Brief explanation of the drawing]

Fig. 1 is a functional block diagram of an embodiment of the power system accident recovery support device according to the present invention, Fig. 2 is an output side view 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 database; FIG. 5 is a flowchart showing the equipment power failure charging determination process in step IK of FIG. 3; and FIG. 6 is the inference in step 32 of FIG. 3. A flowchart showing the processing, FIG. 7 is a flowchart showing the inference processing in step 33 of FIG. 3, and FIG. 8 is a flowchart showing the inference processing in step 3 of FIG. 3.
Figure 9 is a knowledge side view of accident recovery procedures, Figure 1θ is a knowledge side view of operating short-term memory for accident recovery procedures, and Figure 11 is a knowledge side view of prioritizing recovery procedures. 12 is a knowledge side diagram for deleting a recovery procedure, FIG. 13 is a functional block diagram of another embodiment of the power system accident recovery support device according to the present invention, and FIG.
15 is a flowchart showing the inference processing in step 101 of FIG. 14,
FIG. 16 is a knowledge diagram for estimating the time required for the recovery procedure. l...Power system, 2...Uplink transmitting station, 3.
... Upper receiving station, 4... Lower receiving station, 5...
Downlink transmitting station, 6...Electronic computer, 7...CR
T device, 61...Equipment database, 62...Power system monitoring and control mechanism, 63...Knowledge pace, 64...Inference mechanism, 65
...Equipment color changing mechanism. Patent Applicant Toshiba Corporation Patent Attorney Norio Ishii Fig. 2 Fig. 3 Fig. 6 Fig. 7 Fig. 8 (IF electric 'AFJ'rS 1's bus line B1 is connected to the bus line B1 which is out of power. Possible power transmission line 1 is slow current ft, F7'rS
Busbar 82 of 2 and charging busbar 132+'C@j night possible power transmission line 1 GAMERO ELECTRIC ff1sI and electricity, PfTS
Connect bus 81 of 2t different HEN electric station MrS1 to bus B2 of electric station S2.
Figure 9 (Construction F Transmission line 1 connectable to bus B1
Figure 10 (IF Electrical NlI S l's Busbar B1) Electrical Station S2's Busbar B2 and Transmission Line The bus B3 of electricity m53, which is to be restored using 1, is connected to the bus B4 of electricity station S4, and the transmission line is connected to the bus B4 of electricity station S4. The power station B2 and the power transmission line of the electric station B2 will be restored in 1 use. (The power station B3 of the power station S3 will be restored in the 2nd use. y high) (IF Electrical station S1 bus line B1 Meiden BS2 bus line B2 and transmission line L
When the power transmission line is restored using 1 and charged with 1, the Hueranci phenomenon occurs HE
N (Restore using the bus line Bit of electric station S1, the bus line B2 of electric shield S2, and the power transmission line) (Use cutting obstacle 1) Figure 12 Figure 15 (Engineer F (81 people on the bus line of electric station S1) Fn52's bus B2 and power transmission line are used to restore power).
Ko1! - Already done) NOT (Bus line B2 of electric station S2 and transmission line 1 (Moon side night) Electric station Sit co-Confucian electric door °mero@ni'lT S 2 tl Manned electric, Figure 16

Claims (3)

[Claims] (1) Using an equipment database that stores power system equipment data including status data of monitored systems, a knowledge base that stores knowledge regarding recovery from power system accidents, and the contents of the equipment database and the knowledge base. an inference mechanism that creates a recovery procedure for a power system accident; and an equipment color change mechanism that discriminates between a plurality of recovery procedures created as candidates in the inference mechanism and a recovery procedure that is particularly adopted among the plurality of recovery procedures. , C that displays the discrimination results.
A power system accident recovery support device comprising: an RT device. (2) By inputting a specified time, the recovery procedures that are candidates at that time and the recovery procedures that have been specifically adopted among them are distinguished and displayed.
The power system accident recovery device described in Section 1. (3) A power system accident according to claim 1 or 2, characterized in that a plurality of restoration procedures created as candidates and a restoration procedure particularly adopted among them are distinguished by blinking. Recovery support equipment.