Distribution automation switch fault diagnosis method and device, and readable storage medium

Abstract

The invention discloses a distribution automation switch fault diagnosis method and device, and a readable storage medium. The method comprises steps of 1, selecting a characteristic quantity, building a comment set and a fault diagnosis fault set of a state evaluation index system, and forming a distribution automation switch state evaluation index system; step 2, establishing a fuzzy evaluationmodel factor set, layering and evaluation factor membership functions, and finally establishing a power distribution automation switch state evaluation model based on layered fuzzy comprehensive evaluation; and step 3, establishing a fuzzy C-means clustering distribution automation switch fault diagnosis model according to an improved grey correlation degree method of the fuzzy C-means. The methodis advantaged in that the most representative sequence is selected by clustering the reference sequence through the fuzzy C-means clustering method, the improved analysis method improves calculationefficiency, a purpose of completing efficient fault diagnosis through system information is achieved, the result can be well distinguished, the error of judging bias is not easy to generate, and accuracy and efficiency of fault identification are improved.

Description

【Technical field】 [0001] The invention belongs to the field of fault diagnosis of a power distribution automation switch, and relates to a fault diagnosis method, equipment and a readable storage medium of a power distribution automation switch. 【Background technique】 [0002] With the continuous development of economy and society, the whole society puts forward higher requirements on the reliability of power supply. As a terminal system that has a direct relationship with users, the distribution network reflects the safety and economic requirements of users in real time, and its safety and stability are very important. The improvement of the power supply reliability of the distribution network is inseparable from the highly reliable distribution automation switchgear. Improving the reliability of distribution automation switches is an inevitable requirement for improving the stability of distribution network power supply. [0003] In order to improve the reliability of di...

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Problems solved by technology

There are literatures that use the sampling method to evaluate the switchgear as a whole, and use online monitoring data for individual evaluation, but it only starts from the individual switchgear and lacks the consideration of the overall operation of the power grid; Quantify the information of electric switchgear and obtain its overall state evaluation results, but it does not carry out weight analysis on the layered part, and only completes the state evaluation; there are also literatures that propose a layered fuzzy comprehensive evaluation combined with entropy weight theory solution, but it does not consider the cause of the fault, and cannot be used as a reference for fault diagnosis

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