Assessment method and system for electric transmission and transformation equipment states

Abstract

The invention relates to an assessment method and system for electric transmission and transformation equipment states. The assessment method comprises the steps of collecting site data of N equipment state characteristics of the electric transmission and transformation equipment; separately calculating the cumulative probability of the N equipment state characteristics according to the site data and a corresponding cumulative distribution function obtained by pre-modeling; calculating a score-reducing value of the N equipment state characteristics according to the cumulative probability and a characteristic degradation score-reducing model corresponding to the cumulative distribution function; separately setting weights for the N equipment state characteristics; and obtaining a total score-reducing value of the electric transmission and transformation equipment according to the score-reducing value and the weights of the N equipment state characteristics, and assessing the states of the electric transmission and transformation equipment according to the total score-reducing value of the electric transmission and transformation equipment. The assessment method is simple, free of demand on the data size, capable of rapidly and accurately assessing the healthy condition of the electric transmission and transformation equipment, and relatively high in practicability.

Description

technical field [0001] The invention relates to the field of power transmission and transformation systems, in particular to a method and system for evaluating the status of power transmission and transformation equipment. Background technique [0002] Economic development is inseparable from electric energy, and power transmission and transformation equipment is an important part of the power grid. With the development of the national economy and the power grid, on the one hand, the scale of the power grid continues to expand, the number of power transmission and transformation equipment surges, and the pressure on the reliability of power supply increases; [0003] At present, the judgment of the health level and operation status of power transmission and transformation equipment at home and abroad is mainly based on relevant standards, experts and operating experience benchmarks, through power failure preventive tests PT (PreventionTest) and regular maintenance TBM (TimeB...

AI Technical Summary

Problems solved by technology

[0004] Judging from the current research situation at home and abroad, the degradation evaluation system of power transmission and transformation equipment is still in its infancy and many aspects are not perfect enough.

Although some scholars have also applied some intelligent methods to the evaluation system of power transmission and transformation equipment, such as: expert system diagnosis method, fuzzy mathematics, neural network, genetic algorithm, Bayesian network, evidence theory, but these evaluation methods are relatively complicated. , requires a large amount of data, but the amount of data currently available is not enough, which leads to the fact that the various evaluations have not been closely connected with the actual situation, and the practicability is not high

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