State evaluating method applied to secondary equipment of intelligent transformer station

Abstract

The invention discloses a state evaluating method applied to secondary equipment of an intelligent transformer station. The state evaluating method comprises a step 1 of according to an evaluation object, acquiring online real-time detection data from correlative secondary equipment and acquiring historical data and basic data from a database; a step 2 of fusing multiple types of data and performing comprehensive evaluation by using multiple evaluating methods; and a step 3 of according to an evaluated result, guiding a worker to overhaul and replacement of the secondary equipment. The state evaluating method applies online monitoring information to a state evaluating system, integrates the historical data of the secondary equipment into the state evaluation in order to provide guarantee for detection reliability, objectively determines the weights of evaluating factors by using an experts objective weight method in group decision, and fast and effectively monitors the health state of the secondary equipment by the combination of the weighted TOPSIS evaluating method and an improved fuzzy integration SVM state evaluating method so as to facilitate the maintenance of the secondary equipment.

Description

technical field [0001] The invention relates to a state evaluation method applied to secondary equipment of an intelligent substation, belonging to the field of state monitoring of the secondary equipment of the intelligent substation. Background technique [0002] For a long time, electric power equipment has relied on regular off-line testing, but it has great limitations and shortcomings in preventing accidents. Off-line testing cannot reflect the various states of the equipment under operating conditions throughout the process, and cannot detect sudden failures. predict in advance. [0003] With the development of sensor technology and detection technology, the online monitoring of power system primary equipment has made unprecedented progress. However, how to effectively monitor the secondary equipment in the power system such as sensors has become a difficult problem. [0004] Although secondary equipment is less expensive than primary equipment and is less important...

AI Technical Summary

Problems solved by technology

[0005] At present, the status monitoring or evaluation of secondary equipment in conventional stations or smart substations mainly relies on on-site sampling by secondary staff, and the corresponding maintenance strategies are obtained by uniformly inputting the evaluation methods in PMIS (Project Management Information System) and carried out. The evaluation equipment is mainly limited to relay protection and secondary circuits, and the related evaluation algorithms are relatively simple, so it is not enough in real-time, simplicity, and feasibility; secondly, the status evaluation of the secondary equipment in the smart substation still refers to the conventional Therefore, exploring the potential power of smart substations will effectively improve the effectiveness, simplicity and real-time performance of the status evaluation of secondary equipment in smart substations.

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