JP2654225B2 - How to determine switch operating procedures at substations - Google Patents

Description

The present invention relates to a procedure determination method for automatically determining a switch operation procedure in a substation.

B. Summary of the Invention The present invention relates to a procedure determining method for automatically determining a switch operation procedure in a substation, comprising: a concept key for specific contents of the switch type, operation direction, equipment type, and rule set. , And the procedure creation rule attaches the concept key of each operation procedure to create the procedure, the step of specifying the created procedure with the concept key, and combining multiple concept keys with AND and OR By providing a process, it is possible to refer to a group of procedures expressed in various levels, and to provide a technique that allows the procedures to be freely rearranged.

C. Conventional Technology In power plants and substations, transformers, buses, transmission lines, etc. may be shut down or put into service from a stopped state in order to perform maintenance work on the equipment.

At that time, a switch around the equipment must be operated, and the operation of the switch is performed in a procedure (sequence) preset for each equipment in accordance with the operation rules of the equipment. The procedure is very complicated, including various procedures for safety confirmation and procedures for contacting other departments in addition to the operation of the main circuit. In addition, since an operation procedure is created for each facility, it is necessary to create a new operation procedure when a new facility or an additional facility is installed.

Knowledge when creating the operating procedure of a switch can be basically classified into the following two concepts.

(1) Which switch should be turned on or off.

(2) In what order are the operations performed?

The operation procedure when stopping the equipment is significant in the order of operation. For example, for knowledge on the sequence of operating procedures, release LS after releasing CB.

Before stopping the bus, the transformer is connected to the bus and the transformer is loop-switched to another bus.

The order in which the transformer is disconnected from the surrounding equipment is the tertiary CB,
This is performed in the order of the secondary CB and the primary CB.

Therefore, it is necessary to rearrange the individual switch operation procedures created by the procedure creation rules having knowledge of which switch should be opened in accordance with those rules. The reordering process of this procedure is also set by rules, and the created procedure is specified by a specific switch type or operation name, or the loop switching is performed by specifying a plurality of procedures using an abstract concept. In each case, the specified procedure is extracted and sorted.

D. Problems to be Solved by the Invention Here, as an example of recognizing the operation procedure, when stopping a certain facility, individual procedures in a series of operation procedures include the following elements. In other words, a person who uses the operation procedure recognizes the contents of the procedure from a plurality of viewpoints as described below and performs the operation.

(1) CB on / off (2) LS on / off (3) CB operation (4) CB status check (5) LS operation (6) LS status check (7) Switch operation ( 8) Confirmation of switch status (9) Loop switching operation group (10) Equipment disconnection operation group (11) Equipment connection operation group (12) Equipment combined operation group (13) Equipment combined operation release group (14) Others .

As described above, since the expression level for specifying the procedure is different from the specific type to the procedure group of the abstract concept, the overall procedure in which these are mixed (created by the knowledge of (1) of the concept) is used. ), The process of extracting one or more required procedures becomes complicated, and it is extremely difficult to create a new switch operating procedure when newly installing or adding equipment.

The present invention has been made in view of such a problem, and it is possible to refer to a group of procedures expressed in various levels, freely rearrange the procedures, and to store equipment information when newly installing or adding equipment. An object of the present invention is to provide a method for determining a switchgear operation procedure of a substation that automatically creates an operation procedure only by additional changes.

E. Means for Solving the Problems The means for solving the above problems in the present invention are a power equipment information section that expresses equipment, switches, and their connection relations in a frame structure, and the knowledge required for creating procedures. The required information is stored in a knowledge base consisting of a procedure table creation logical information part expressed by a creation rule, and an operation procedure is created by forward inference of the information. Set concept keys for their specific contents for each direction, equipment type, and rule set,
The procedure creation rule includes a step of creating a procedure by attaching the concept key of each operation procedure, a step of identifying the created procedure by a concept key, and a step of combining a plurality of concept keys by AND and OR. It shall be based on the method of determining the switch operation procedure of the substation.

F. Function The present invention is to create a procedure using a knowledge base system when determining the order of operating the switches of a substation. Since the operation of the switch is performed in accordance with the operation rules of the equipment, the knowledge base is composed of the power equipment information section and the logic information section for creating the procedure table. The procedure table creation theory information section expresses knowledge necessary for procedure creation by procedure creation rules (production rules), stores such necessary information, and creates an operation procedure by forward inference. At this time, in addition to the procedure information, information on the nature of the procedure (switch type, operation direction, equipment type, rule set that generated the procedure) (referred to as a concept key in the present invention).
Is output, attached and saved, and a concept key is specified and specified from among a plurality of created procedures. When there are a plurality of concept keys attached to one procedure, they are combined by AND and OR to extract a desired procedure. Since information in which individual operation procedures are summarized by a higher-level knowledge concept is stored, a group of procedures expressed in various levels can be referred to, and the order of the procedures can be freely rearranged.

G. Examples Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a configuration diagram of one embodiment of the present invention. In FIG. 1, a knowledge base system for creating an operation procedure is:
It is composed of a knowledge base unit 1, an inference mechanism 2, and a work area 3, and the knowledge base unit 1 includes a power equipment information unit 1a and procedure table creation logic information 1b.

The knowledge base unit 1a stores information for creating operation procedures, and the power equipment information unit 1a expresses the connection relationship between the facilities, switches, and facilities of the substation in a frame structure.
The procedure table creation logic information section 1b exposes knowledge for procedure creation using production rules. The rule is, for example, "" i
f "determines if there is an open circuit breaker between the facilities, and" then "creates a procedure to open the circuit breaker." A system having these knowledge bases can be easily constructed by using a general-purpose expert system construction tool having a forward reasoning function and a frame representation function.

The inference mechanism 2 performs forward inference with reference to the information in the knowledge base 1 and outputs an operation procedure to the work area 3. The work area 3 is a work area used by the inference mechanism 2, and an operation procedure is output.

In the present invention, in order to freely change the order of the procedure, the following is performed in the rule expression and its execution.

(1) When creating an individual procedure using a procedure creation rule (a rule having knowledge of the concept (1)), in addition to the procedure information,
Output the concept key related to the nature of the procedure and keep it organized.

(2) In a rule having the knowledge of the concept (2), one concept key is designated and a desired procedure is extracted from a plurality of procedures.

(3) In a rule having knowledge of the concept (2), a procedure can be extracted by AND and OR of a plurality of concept keys.

Table 1 is a table showing an example of concept keys used in the embodiment.

With this setting, all the procedures of the switch of the desired type can be taken out by (1).

By performing an AND operation with (2), all operation procedures in a specific direction of a desired switch type can be obtained.

By (3), only the procedure in the desired operation direction can be extracted.

By (4), all procedures relating to desired equipment can be taken out.

By (5), a group of procedures of a certain concept can be extracted.

 And so on.

Next, the relationship between the concept key and a specific procedure will be described.
Table 2 shows the bus B of the equipment configuration shown in the single-line diagram in FIG.
6 is a table showing an example of a procedure for stopping the operation.

Each of the above procedures has a concept key shown in the following table as attached information. For example, the procedure NO1 includes concept keys of switch type; LS, operation direction; ON, equipment type; transformer and rule set; and loop switching.

Table 3 is a table showing an example of such concept-based procedure information.

By storing information in which individual procedures are summarized based on a higher-level knowledge concept, a group of procedures expressed in various levels can be easily referred to, and the procedures can be rearranged freely.

H. Effects of the Invention As described above, according to the present invention, by storing information in which individual procedures are summarized by a higher-level knowledge concept, a group of procedures expressed in various levels can be referred to, and It is possible to provide a method for deciding a switchgear operation procedure of a substation, which can rearrange freely and automatically create an operation procedure only by adding and changing the equipment information when newly installing or adding equipment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of an embodiment of the present invention, and FIG. 2 is a single-line diagram of a configuration of a target facility. 1 ... Knowledge base unit, 2 ... Inference mechanism, 3 ... Work area, 1a ... Power equipment information unit, 1b ... Procedure table creation logical information unit.

Continued on the front page (72) Inventor Akira Tanaka 2-1-1-17 Osaki, Shinagawa-ku, Tokyo Inside Meidensha Co., Ltd. (56) References JP-A-1-238429 (JP, A) JP-A-2-28726 (JP JP-A-1-166224 (JP, A) JP-A-1-274242 (JP, A) JP-A-60-129845 (JP, U)

Claims (1)

(57) [Claims] 1. A power equipment information section for realizing a facility, a switch, and a connection relation in a substation in a frame structure, and an operation procedure table for expressing knowledge required for creating an operation procedure of the switch by an operation procedure creation rule. In a method for determining a switch operation procedure in which required information is stored in a knowledge base consisting of a creation logical information section and an operation procedure is created by forward inference of the information, a switch type, an operation direction, and a facility type are determined in advance. A concept key representing specific contents of the operation procedure such as for each rule set is set, and a corresponding concept key is selected and specified for each operation procedure created according to the operation procedure creation rule. When one operation procedure includes a plurality of concept keys, a desired operation procedure is obtained by combining AND and OR. To determine switch operating procedures at power plants.