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Bus fault diagnosis method and system, readable medium and equipment

A diagnostic method and a bus fault technology, applied in the field of power system, can solve the problem that the calculation of small differential current cannot be realized, the grid topology model does not meet the requirements of the grid to quickly obtain fault diagnosis results, and the topology relationship between the incoming and outgoing lines and the bus cannot be judged. and other problems, to achieve the effect of improving speed, wide application range and improving reliability

Active Publication Date: 2021-03-16
SHANDONG SHANDONG UNIV ELECTRIC POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (3) For the small difference protection, the topological relationship between the incoming and outgoing lines and the busbar cannot be judged only by the position of the circuit breaker. Calculation of Differential Differential Current
[0009] To sum up, the traditional method of manually adjusting the topology model of the power grid does not meet the requirements of the power grid to quickly obtain fault diagnosis results.

Method used

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  • Bus fault diagnosis method and system, readable medium and equipment
  • Bus fault diagnosis method and system, readable medium and equipment
  • Bus fault diagnosis method and system, readable medium and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The busbar wiring mode of a 220kV substation is double busbar, and some main wiring diagrams in the substation are as follows Figure 4 As shown, part of the content of the CIME file at the time of failure is as follows Figure 5 As shown (in order to make this case more intuitive, the contents irrelevant to the plant and station lines are deleted, leaving only Figure 4 Contents of relevant primary devices in ).

[0062] The technical scheme that present embodiment adopts is:

[0063] A bus fault diagnosis method based on D5000 and fault recording information, including the following steps:

[0064] (1) Establish the basic model of the primary equipment of the substation according to the main wiring diagram of the primary equipment of the substation. Each primary device recognizes the identity of the matching data.

[0065] (2) Based on the ID identification of lines and bus couplers in the D5000 system, establish the relationship between the fault recording inform...

Embodiment 2

[0101] A bus fault diagnosis system, comprising:

[0102] The primary equipment model building module is configured to establish the basic model of the primary equipment of the substation according to the main wiring diagram of the primary equipment of the substation, the model is established according to the ID of the corresponding primary equipment, and the ID is used as the identification and matching data of each primary equipment in the basic model of the primary equipment logo;

[0103] The current data mapping module is configured to establish the association relationship between the fault recording information and the line and bus coupler in the basic model of the primary equipment based on the ID, and connect the current recording channel in the fault recording system to the line and bus coupling in the basic model of the primary equipment. The bus coupler is matched to complete the data mapping of the current;

[0104] The equipment operation model building module i...

Embodiment 3

[0107] A computer-readable storage medium, in which a plurality of instructions are stored, and the instructions are suitable for being loaded by a processor of a terminal device and executing the steps of the above-mentioned bus fault diagnosis method.

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Abstract

The invention provides a bus fault diagnosis method and system, a readable medium and equipment. The method comprises the steps: taking fault recording information as the basis, fusing model file information, analyzing the ID and state information of a circuit breaker and an isolation knife switch in a file, mapping the position state information to a primary equipment basic model through an ID identifier to form a primary equipment operation model, obtaining the connection relationship between the bus and each connected unit through the primary equipment operation model, obtaining the currentinformation of the bus according to the primary equipment ID in the interval, further carrying out differential current calculation, and automatically diagnosing the bus fault. According to the invention, the defect that the bus branch is manually associated during traditional differential current calculation is overcome, the differential current calculation speed at the fault moment is increased, the conditions of misoperation and the like during branch manual association are avoided, and the reliability of bus fault diagnosis is improved.

Description

technical field [0001] The disclosure belongs to the technical field of power systems, and relates to a bus fault diagnosis method, system, readable medium and equipment. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] As a member of the primary equipment of the power grid, the busbar plays the role of collecting and distributing electric energy, and is a very important equipment in the power system. When a bus failure occurs, if the failure cannot be removed in time, it will cause serious damage to many electrical equipment and seriously affect the stability of the power system. In severe cases, it will cause large-scale power outages and even lead to the collapse of the power system. Therefore, the requirements for busbar protection in actual operation are very high, and they need to have high safety and reliability, and they also have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/22H02H1/00H02H3/28G06F30/18G06F113/04
CPCG06F30/18G06F2113/04H02H1/0061H02H1/0092H02H3/28H02H7/22
Inventor 安泽石王增祥
Owner SHANDONG SHANDONG UNIV ELECTRIC POWER TECH
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