JPH03277128A - Deciding method for switch operating sequence in generating substation - Google Patents

Abstract

PURPOSE:To freely realign a sequence and to automatically form an operating sequence merely by adding or altering facility information at the time of increasing new facility by setting a concept key of a switch type, an operating direction, etc., and combining the operating sequence and a plurality of concept keys. CONSTITUTION:A knowledge base 1 stores information for forming an operating sequence, a power facility information unit 1a expresses facility of a generating substation, switches, connecting relation of the facility in a frame structure, and sequence table forming logic information unit 1b expresses knowledge for forming sequence in a production rule. An inferring mechanism 2 refers to information of the base 1 to inter forward, and outputs the sequence to a working area 3. The area 3 is an area used by the mechanism 2, and outputs the sequence. The information in which individual sequences are summarized in knowledge concept is reserved, and the sequences are freely realigned by referring to a group of the sequences by the expression of various levels.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a procedure determining method for automatically determining switch operating procedures in power generation and substations.

B9 Summary of the Invention The present invention provides a procedure determination method for automatically determining switch operation procedures in power generation and substations, which provides concept keys for specific contents of each switch type, operation direction, equipment type, and rule set. The process of creating a procedure by setting the procedure creation rule and attaching the concept key to each operation procedure, the process of identifying the created procedure with the concept key, and the process of combining multiple concept keys with AND and OR. By having this, it is possible to refer to a group of procedures expressed at various levels, and it provides a technology that allows the order of procedures to be freely rearranged.

C0 Conventional technology At power plants and substations, for equipment maintenance and inspection work,
Equipment such as transformers, busbars, and power transmission lines may be stopped or put into use from a stopped state.

In that case, the switches around the equipment must be operated.
The operation of this switch is performed according to a procedure (sequence) that is preset for each piece of equipment in accordance with the operation rules of the equipment. The procedures are extremely complex, including not only the operation of the main circuit, but also various safety confirmation procedures and procedures for contacting other departments. Furthermore, since operating procedures are created for each piece of equipment, it is necessary to create new operating procedures when new or expanded equipment is installed.

Knowledge when creating operating procedures for switches can basically be classified into the following two concepts.

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

(2) In what order should the operations be performed?

The order of operations when stopping equipment has meaning. For example, knowledge regarding the sequence of operation procedures includes: (1) Release LS after releasing CB.

■Before stopping the bus, loop-switch the transformer connected to the bus to another bus.

■The order in which the transformer is disconnected from the surrounding equipment is the tertiary side CB.
, secondary side CB, and primary side CB in this order.

There are several rules, and it becomes necessary to rearrange the individual switch operation procedures created using procedure creation rules that have knowledge such as which switch should be opened, according to those rules. In the case of ■ and ■ above, where the procedure is set by the reordering rule and the created procedure is specified by a specific switch type or operation name, or multiple procedures are specified by abstract concept. In the case of loop switching described in (2) above, each designated procedure is extracted and rearranged.

03 Problems to be Solved by the Invention Here, to give an example of recognition of operating procedures, when a certain equipment is to be stopped, each individual procedure in a series of operating procedures consists of the following elements. In other words, the person using the operating procedure recognizes the content of the procedure from multiple viewpoints as described below and performs the operation.

(+) CB on/off (2) LS turning on/off (3) CB operation (4) Checking the status of CB (5) LS operation (6) Checking the LS status (7) Switch operation (8) Check the status of the switch (9) Loop switching operation group (10) Equipment disconnection operation group (11) Equipment connection operation group (I2) Combined equipment operation group (13) Equipment combination operation cancellation group (14) Others.

As mentioned above, since the expression level for specifying a procedure is different from a concrete type to a group of procedures of an abstract concept, the whole procedure ((1) of the above concept
The process of extracting one or more necessary procedures from the procedures (procedures created using the knowledge of ) is complicated, and it is extremely difficult to create new switch operating procedures when installing or expanding equipment.

The present invention was created in view of these problems, and
It is possible to refer to a group of procedures expressed at various levels, freely rearrange the order of procedures, and automatically create operating procedures by simply adding and changing equipment information when installing or expanding equipment. The purpose of this invention is to provide a method for determining switch operation procedures.

E. Means for Solving the Problems The means for solving the above problems in the present invention are a power equipment information department that expresses equipment, switches, and their connection relationships in the form of a structure, and a power equipment information department that expresses the knowledge necessary for creating procedures. In a method for determining a switch operation procedure, the required information is stored in a knowledge base consisting of a procedure table creation logical information section expressed by a creation rule, and an operation procedure is created by forward inference of this information. Set concept keys for specific contents for each direction, equipment type, and rule set,
The procedure creation rule includes a step of creating a procedure by attaching its concept key to each operation procedure, a step of specifying the created procedure with a concept key, and a step of combining multiple concept keys using AND and OR. This shall be based on the method used to determine switch operation procedures for power generation and substations.

F. Function The present invention creates a procedure using a knowledge-based system when determining the order in which to operate the switches in a power generation and substation. Since the operation of the switch is performed according to the equipment operation rules, the knowledge base is composed of the power equipment information section and the procedure chart creation logic information section, and the power equipment information section describes the equipment, switches, and their connection relationships in a frame structure. The procedure chart creation logic information unit expresses the knowledge necessary for creating a procedure in the form of procedure creation rules, stores the necessary information in these rules, and creates an operating procedure by forward reasoning. At that time, in addition to the procedure information, information (referred to as a concept key in the present invention) regarding the nature of the procedure (switch type, operation direction, equipment type, and the rule set that generated the procedure) is output and organized. Save it and specify and identify the concept key from among the multiple procedures created. If there are multiple concept keys attached to one procedure, the desired procedure is retrieved by combining them with AND and OR. Since information that summarizes individual operating procedures using higher-level knowledge concepts is stored, it is possible to refer to a group of procedures expressed at various levels, and the procedures can be rearranged freely.

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

FIG. 1 is a configuration diagram of an embodiment of the present invention.

In FIG. 1, the knowledge base system for creating operating procedures consists of a knowledge base section 1, an inference mechanism 2, and a work area 3.
The knowledge base section 1 is composed of the power equipment information section 1a and the knowledge base section 1a.
and a procedure chart creation logic information section 1b.

The knowledge base part 1 stores f-level information for creating operating procedures, and the power equipment information part 1a expresses the connection relationships among equipment, switches, and equipment of power generation and substations in a frame structure.
The procedure chart creation logic information unit 1b expresses knowledge for creating a procedure using production rules. A rule can be, for example, ““
``If'' is used to determine if there is an open circuit breaker between the equipment, and ``then'' is used to create a procedure to open the circuit breaker.'' Systems with these knowledge bases can be easily constructed using general-purpose Exverton stem construction tools that have forward inference and frame representation capabilities.

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

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

(1) When creating individual procedures using procedure creation rules (rules that have the knowledge of concept (1) above), in addition to procedure information, a concept key regarding the nature of the procedure is output and stored in an organized manner.

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

(3) L for rules that have knowledge of (2) of the above concept)
Then, the procedure can be retrieved by AND and OR of multiple concept keys.

Table 1 is An example of a concept key used in the example This is a table showing

Table 1 If you set it up like this, (1) ■[You can retrieve the procedure for the desired type of switch from here.

(2) By ANDing ■ and ■, all operating procedures for a desired switch type in a specific direction can be retrieved.

(3) With (■), the number of steps in the desired direction of operation can be retrieved.

(4) Complete the procedures related to the desired equipment according to () and take out the equipment.

(5) A group of procedures for a certain concept can be extracted using ■.

It becomes possible somehow.

Next, the relationship between concept keys and specific procedures will be explained. Table 2 is a table showing an example of a procedure for stopping bus B in the equipment configuration shown in the single line diagram of FIG. 2.

Table 2 in the margin below Each of the above procedures has the concept key shown in the table below as attached information. For example, the procedure NOI includes switch type, LS,
Operation direction: ON1 equipment type, transformer and rule set,
It has a concept key called loop switching.

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

Table 3 concept key Step N with the key.

By storing this information, it is possible to easily refer to a group of procedures expressed at various levels, and to rearrange the procedures at will.

11. Effects of the Invention As explained above, according to the present invention, by storing information that summarizes individual procedures using higher-level knowledge concepts, it is possible to refer to a group of procedures expressed at various levels, and the sequence of procedures can be It is possible to provide a method for determining switch operation procedures for power generation and substations that automatically creates operation procedures by simply adding and changing equipment information when installing or expanding equipment.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention, and FIG. 2 is a single line diagram of the target equipment configuration. 1...Knowledge base section, 2...Inference mechanism, 3...Work area, 1a...Power equipment information section, 1b...Procedure chart creation logic information section.

Claims (1)

[Claims] (1) The knowledge base consists of the power equipment information section that expresses equipment, switches, and their connection relationships in a frame structure, and the procedure chart creation logic information section that expresses the knowledge necessary for procedure creation using procedure creation rules. In a method for determining switch operation procedures that stores information and creates operating procedures by forward inference from that information, concept keys are set for specific contents for each switch type, operation direction, equipment type, and rule set. However, the procedure creation rule includes a process of creating a procedure by attaching its concept key to each operation procedure, a process of specifying the created procedure with a concept key, and a process of combining multiple concept keys with AND and OR. 1. A method for determining switch operation procedures in a power generation substation, comprising: