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Condition evaluation method for high-voltage circuit breaker

A high-voltage circuit breaker and state evaluation technology, which is applied to instruments, emergency protection circuit devices, calculations, etc., can solve the problems of grayness of evaluation factors, lack of high-voltage circuit breaker data, and low reliability of evaluation results, etc.

Inactive Publication Date: 2014-10-08
SHANDONG UNIV
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AI Technical Summary

Problems solved by technology

Although the artificial neural network is widely used in data prediction, it requires a large amount of data as the basis, and the high-voltage circuit breaker data itself is relatively scarce, and the lack is serious, so the artificial neural network is not suitable for the state assessment of high-voltage circuit breakers
Although the fuzzy comprehensive evaluation and its improved method can deal with the complex fuzzy system well, it does not consider the grayness of the evaluation factors, so the credibility of the evaluation results is low

Method used

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  • Condition evaluation method for high-voltage circuit breaker
  • Condition evaluation method for high-voltage circuit breaker
  • Condition evaluation method for high-voltage circuit breaker

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Embodiment Construction

[0068] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0069] Such as figure 1 As shown, a state assessment method for a high-voltage circuit breaker includes the following steps:

[0070] Step 1: Establish a judging factor set

[0071] As a complex multi-factor system, high-voltage circuit breakers have mechanical, electrical, and insulation factors that are the main factors that affect the state of the circuit breaker. In addition, there are other factors that should be considered, such as working environment, appearance, and maintenance. Wait. Based on the system engineering point of view, considering the operation mechanism of the circuit breaker and related test items, selecting representative indicators, taking into account the rationality and comprehensiveness of the modeling, a comprehensive evaluation model for high-voltage circuit breakers is established, as shown in Table 1.

[0072] Table 1 J...

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Abstract

A condition evaluation method for a high-voltage circuit breaker comprises the steps of establishing a hierarchical level evaluation model of the high-voltage circuit breaker, establishing judgment grade sets for various factors, determining weight sets of the various factors, establishing a weight set matrix according to the model parts and the grey parts of the weight sets, establishing the grey fuzzy judgment matrixes of all hierarchical levels, synthesizing a grey fuzzy comprehensive judgment result under a parent layer, and obtaining the operation state of the high-voltage circuit breaker. The condition evaluation method for the high-voltage circuit breaker has the advantages that the judgment result is more effectively and reliably close to the practical operation state, and the system problems of being fuzzy and incomplete in information can be more effectively solved.

Description

technical field [0001] The invention relates to a state evaluation method of a high-voltage circuit breaker. Background technique [0002] The high-voltage circuit breaker plays a dual role of protection and control in the power grid. Its protection function is mainly reflected in that when the power line or equipment fails, it cooperates with the relay protection device to quickly remove the faulty part from the power grid to ensure that there is no fault in the power grid. The normal operation of the faulty part, its control function is mainly reflected in the normal operation of the power grid, according to the operation needs of the power grid, use high-voltage circuit breakers to put some power equipment or lines into or out of operation. Therefore, as one of the core switchgears in the power system, its operating status has a significant impact on the safe and stable operation of the power system. At present, the maintenance of circuit breakers is still in the stage o...

Claims

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Application Information

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IPC IPC(8): G06F19/00H02H7/26
Inventor 李可军国连玉梁永亮高洪霞
Owner SHANDONG UNIV
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