Prediction method of insulator equivalent salt density accumulation rate based on ba-grnn

Abstract

The invention discloses a BA‑GRNN-based method for predicting the equivalent salt density accumulation rate of insulators. First, a set of random solutions is initialized, and then the optimal solution is searched iteratively, and a local new solution is generated by random flight around the optimal solution. , the local search is strengthened, so as to realize the prediction of the equivalent salt density accumulation rate of insulators; compared with other algorithms, BA is far superior to other algorithms in terms of accuracy and effectiveness, and there are not many parameters to be adjusted, and it also has convergence The advantages of fast speed and few adjustment parameters of radial basis function.

Description

technical field [0001] The invention belongs to the technical field of insulator pollution analysis, and more specifically relates to a BA-GRNN-based method for predicting the equivalent salt density accumulation rate of insulators. Background technique [0002] The equal salt deposit density (ESDD), referred to as salt density, is the main basis for determining the pollution level and drawing the distribution map of the grid pollution area. [0003] With the rapid development of the national economy, the scale of my country's power grid continues to increase, and the rated voltage level of the power grid continues to increase. Therefore, the pollution flashover accidents of the external insulation of the power transmission and transformation equipment in the power system are also becoming more and more serious. It is difficult to grasp the occurrence rules of pollution flashover accidents, and there are no current measures to effectively prevent such accidents. [0004] Un...

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Problems solved by technology

It is difficult to grasp the occurrence rules of pollution flashover accidents, and there are no current measures to effectively prevent such accidents

[0004] Under normal circumstances, the inspection and maintenance personnel of the power system operation management department usually take measures such as increasing the creepage ratio distance, using pollution-resistant insulators as much as possible, regularly spraying anti-fouling paint on the surface of insulators, and regularly power-off or live cleaning of insulators. These methods can reduce the risk of pollution flashover to a certain extent, but at the same time inevitably have a certain degree of passivity, blindness, and uncertainty in the prevention effect, so the effect of pollution flashover accident prevention is still not enough. ideal mouth

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