Intelligent assessment method of main isolation condition of paper insulation and transformer oil

摘要

The invention provides an intelligent assessment method of the main isolation condition of paper insulation and transformer oil that comprises: establishing at least one standard state;For each default state,Run accelerated thermal aging tests on a plurality of samples to place samples in the standard state,Where each plurality of samples passes the accelerated thermal ageing tests for different periods of time;Extract time domain and frequency characteristic parameters from each sample plurality;Form a function vector using the time domain and frequency characteristic parameters of each sample,And form a knowledge base from function vectors of all samples;Train a classifier with the use of the knowledge base function vectors;And evaluate the main isolation condition with the use of the trained classifier. The intelligent evaluation method of the invention considers isolation geometry,Temperature and transformer oil,And,Like this,Is suitable for field assessment of different voltage classes of insulation condition of transformer immersed in oil.