JP2637245B2 - How to determine switchgear operating procedures for substations - Google Patents

Description

The present invention relates to a method for determining a switch operation procedure of a substation.

B. Summary of the Invention The present invention realizes a procedure in an inference mechanism for determining an operation procedure of a switch of a substation by a forward inference method based on a production rule from a procedure table creation logical information section, and the rule Is divided into the main circuit rule, the auxiliary equipment rule, and the check item rule, and the inference is performed in the order of inference for creating the main circuit procedure, inference for creating the auxiliary equipment procedure, and inference for creating the check item procedure. At the time of inference, a procedure based on the generated procedure is evaluated, and at the time of inference, a procedure based on evaluating both the procedures generated at and is added.

C. Conventional technology During maintenance and inspection work on power plants and substation facilities, facilities such as transformers, buses, and transmission lines are stopped or used from a stopped state. At that time, the switch around the equipment is operated. The operation of the switch is performed according to a predetermined procedure (sequence) for each equipment in accordance with the operation rules of the equipment. This procedure includes, in addition to the operation of the main circuit, various safety confirmation procedures, procedures for contacting other departments, and the like.

D. Problems to be Solved by the Invention For this reason, the operation procedure is extremely complicated. In addition, since an operation procedure is created for each equipment, it is necessary to create a new switch operation procedure when a new equipment is added or expanded.

The present invention has been made in view of such a problem with the conventional technology, and an object of the present invention is to operate a switch of a power substation with an operation command for stopping or using equipment. Automatically create switch operation procedures from pre-registered information, so that when installing or expanding equipment at a substation, it is possible to open and close the substation only by adding or changing equipment information. It is an object of the present invention to provide a method for determining a device operating procedure.

E. Means for Solving the Problems In order to achieve the above object, a method for determining a switch operation procedure of a substation according to the present invention includes a procedure in an inference mechanism for determining a switch operation procedure, a procedure table creation theoretical information. The method is realized by a forward inference method based on a production rule from a department, wherein the rule is divided into a main circuit rule, a rule of an attached facility, and a check item rule, and the inference is performed.
Inference is made in the order of inference for creating the main circuit procedure, inference for creating the auxiliary equipment procedure, and inference for creating the confirmation item procedure.
When inferring auxiliary equipment procedures, create the main circuit procedures.Evaluate the procedures generated in the inference and add the auxiliary equipment procedures. It is characterized in that both procedures generated by the inference to be performed are evaluated and a confirmation item procedure is added.

F. Operation The production rules are divided into three rules: main circuit rules, accessory equipment rules, and confirmation items rules, so that the rules are easy to understand and easy to write.

The main circuit procedure is created by performing inference for creating the main circuit procedure according to the main circuit rule.

Next, the accessory facility procedure is created by evaluating the main circuit procedure created above and inferring to create the accessory facility procedure according to the accessory facility procedure rule.

In addition, the confirmation procedure is created by evaluating the main circuit procedure and the accessory equipment procedure created above and making an inference to create the confirmation procedure.

Since the operation procedures are created in the above order, the creation of the operation procedures becomes easy, and there is no need to process an extra rule at a time, so that the inference processing speed is improved.

G. Embodiment An embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, a knowledge base unit 1 stores information for creating an operation procedure, and power equipment information that expresses data such as equipment of a substation, switches, and connection relations of equipment in a frame structure. A part 1a and a procedure table creation logic information part 1b that expresses the knowledge for creating the procedure by the production rules, using a general purpose expert system construction roots having a forward reasoning function and a frame expression function,
A system having a knowledge base of the power equipment information section 1a and the procedure creation logic information section 1b is constructed.

The inference mechanism 2 performs forward inference by referring to information from the knowledge base unit 1 according to an operation command, and outputs an operation procedure to the work area 3.

As shown in FIG. 2, the production rules for creating the operation procedure of the procedure table creation logic information section 1b are classified into three types: main circuit rules, accessory equipment rules, and check items rules, and each rule is related. A plurality of individual rules are managed by a set of rules 11 to 13.

Is a rule for creating a procedure for operating the switch of the main circuit.

Is a rule for creating a procedure for operating equipment such as a voltage regulator for controlling equipment and a system in a substation and a device such as a protection rule for protecting the equipment and the system.

Is a rule for operating a procedure for confirming the measured value of the power circuit in accordance with the above operation.

In addition, the main circuit rule, the attached equipment rule, and the check item rule can be configured by a plurality of rule sets, respectively. When creating multiple rule sets, the main circuit,
Before inferring auxiliary equipment and items to be confirmed, processing to determine the rule set to be applied from the contents of the operation command is added.

As shown in FIG. 3, the order of the inference of the operation procedure by the rule in the inference mechanism 2 is performed in the order of the inference for creating the main circuit procedure, the inference for creating the auxiliary equipment procedure, and the inference for creating the check item procedure. . This inference is performed at each stage by extracting the rule sets 11 to 13 and using the rules therein.

 The creation of each procedure will be described with reference to FIG.

The procedure a of the main circuit is created by performing inference for creating the main circuit procedure according to the main circuit rule.

The procedure b for the accessory equipment is created by inferring the procedure a of the main circuit created above as an evaluation target and creating an accessory equipment procedure based on the accessory equipment rules, and adding the procedure to the main circuit procedure a.

Procedure c for confirmation items is based on the procedure a for the main circuit created above and procedure b for accessory equipment, and makes inferences to create a procedure for confirmation items to be evaluated, and is added to procedure a for the above circuit and procedure b for accessory equipment. Create in shape.

The reason for ordering the above inferences is that the auxiliary equipment procedure created in the inference above is the procedure determined by the main circuit procedure a created in the above inference, and the confirmation item procedure created in the inference above is also inferred. This is because the procedure is determined by the obtained main circuit procedure b and attached equipment procedure b.

When stopping the equipment, first, the switch of the main circuit is opened to complete the actual power outage work. The procedures for the operation of the attached equipment and the items to be confirmed are determined by the operation of the main circuit.

An operation procedure is significant in the order of procedures to be created. When creating the accessory equipment procedure b by the inference, insert the procedure by indicating the relative position to the procedure a of the result of the inference. The rules for that are easier to write.

FIG. 4 shows a specific example in the case where the procedure of “stopping the transmission line” is created. In the drawing, CB is a circuit breaker, and LS is a line switch.

H. Effects of the Invention Since the present invention is configured as described above, the following effects can be obtained.

(1) It is easy to understand because the production rules are created separately for the purposes of the main circuit rule, the accessory equipment rule, and the check item rule.

(2) By creating a procedure in the order of the main circuit, the auxiliary equipment, and the items to be confirmed, the additional procedure can be output by specifying the relative position of the existing procedure, and it is easy to create a meaningful operation procedure in the order.

(3) The procedure of the attached equipment is determined by the procedure of the main circuit. The procedure of the items to be confirmed depends on the procedure of the main circuit and the attached equipment. Therefore, the rules can be easily written by referring to the existing procedure in the if part of the rules.

(4) Since the existing procedure can be referred to, the inference is simple.

(5) By creating the procedure in the order of the main circuit, the accessory equipment, and the items to be confirmed, it is not necessary to process extra rules at once, and the speed of inference processing is improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram for explaining the classification of rule sets in a procedure table creation logical information section in the embodiment, and FIG. 3 explains the order of inference in the embodiment. FIG. 4 shows a flowchart of the inference processing in the embodiment. 1 ... Knowledge base unit, 1a ... Power equipment information unit, 1b ... Procedure table creation logical information unit, 2 ... Inference mechanism, 3 ... Work area.

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Akira Tanaka 2-1-1-17 Osaki, Shinagawa-ku, Tokyo Inside Meidensha Co., Ltd. (56) References JP-A-62-256128 (JP, A) JP-A-62- 128333 (JP, A) IEEJ Power Technology Research Group PE-87-166 (1987) 61-70 Transactions of the Institute of Electrical Engineers of Japan, C / Electronic Information Systems, Section 107, No. 2 (Showa 62-2) 121− 126

Claims (1)

(57) [Claims] A procedure in an inference mechanism for determining an operation procedure of a switch is realized by a forward inference method based on a production rule from a procedure table creation logical information section, wherein the operation procedure is a main circuit procedure. In addition to categorizing the procedures into the procedures for the accessory circuits and the procedures for confirming items, the rules are divided into the main circuit rules corresponding to the types of procedures, the rules for the auxiliary equipment, and the rules for confirming items. The inference for creating the main circuit procedure based on the rules of the accessory equipment and the rules of the check items, the inference for creating the accessory equipment procedure, and the inference for creating the check item procedure are performed in this order. Make inferences to create the auxiliary equipment procedure by using the rules of the auxiliary equipment with the procedure of the main circuit generated by the inference to create the procedure as the evaluation target, and describe the procedure to the main circuit. In addition to the procedures, when making inferences to create the procedure for confirmation, the items to be confirmed shall be evaluated with the procedure of the main circuit and the procedure of auxiliary equipment generated by the inference to create the main circuit procedure and the inference to create the auxiliary equipment procedure. A method for determining a switchgear operation procedure for a substation, comprising: inferring a procedure for confirming items according to a rule; and adding the procedure to the procedure of the main circuit and the procedure of ancillary equipment.