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A Method for Evaluating the Importance of High-Voltage Circuit Breaker Components

A technology of high-voltage circuit breakers and importance, which is applied in the field of evaluation of the operating status of power equipment, to achieve the effect of overcoming subjective dependence and multiple adjustments of the judgment matrix

Active Publication Date: 2017-06-06
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the expert analysis method has a certain degree of subjectivity, and the AHP needs to adjust the judgment matrix many times to meet the consistency inspection requirements, so it is necessary to provide a new importance evaluation method

Method used

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  • A Method for Evaluating the Importance of High-Voltage Circuit Breaker Components
  • A Method for Evaluating the Importance of High-Voltage Circuit Breaker Components
  • A Method for Evaluating the Importance of High-Voltage Circuit Breaker Components

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The specific implementation steps are as follows:

[0029] Take the component importance evaluation of the LW10B-252 type SF6 circuit breaker produced by a certain company as an example. The rated voltage of the circuit breaker is 252kV, the rated current is 3150A, and the rated frequency is 50Hz. This product uses SF6 gas as the arc extinguishing medium, and adopts a single-voltage variable-opening arc extinguishing chamber structure to cut off the rated current and fault current, switch lines, and realize the control and protection of high-voltage transmission lines and electrical equipment; each pole has a An independent hydraulic system can be operated in separate phases to realize single-phase automatic reclosing; through electrical linkage, it can also be operated in three-phase linkage to realize three-phase automatic reclosing. By querying the instruction manual and overhaul operation instruction of the LW10B-252 SF6 circuit breaker, the standard values ​​of the...

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Abstract

The invention discloses an importance degree assessment method of parts of a high-voltage circuit breaker. The method includes that according to a statistical result about fault reasons of the high-voltage circuit breaker in national large power grid conference and academy of national power sciences, eight typical faults about opening coil, closing coil, energy-storing motor, opening contact, closing contact, SF6 gas, body and insulation unit are selected and analyzed to finish by five steps. The importance degree assessment method of the parts of the high-voltage circuit breaker has the advantages that the relative distance between a practical value and a standard value of characteristic parameters of typical faults of the high-voltage circuit breaker is calculated, and normalization is performed to obtain the importance degree of the parts. Therefore, the calculated result can overcome the defects of subjective dependency and judgment matrix multiple-time adjustment of traditional methods, the importance degree of the parts of the circuit breaker can be effectively and accurately determined, and basis can be provided for troubleshooting and maintaining of the circuit breaker.

Description

technical field [0001] The invention belongs to the field of evaluating the operating state of electric equipment, in particular to a method for evaluating the importance of components of a high-voltage circuit breaker. Background technique [0002] The circuit breaker is the equipment with the most frequent mechanical and electrical actions in the substation, and its reliability directly affects the safety and stability of the substation. A high-voltage circuit breaker is usually composed of multiple components. The higher the importance of a component, the greater the impact of the component on the reliability of the circuit breaker. In the detection and maintenance decision analysis, it will take a lot of manpower and material resources to analyze each component in detail one by one. Therefore, it is necessary to evaluate the importance of the components of the circuit breaker and determine the relative priority of the components, so as to make a reasonable allocation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 陶松梅郭丽娟张炜
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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