摘要 空气绝缘间隙在高压输电系统中广泛存在。为了实现短空气间隙的工频击穿电压准确预测,将空气间隙击穿路径上的分段平均电场强度作为输入量,间隙的工频击穿电压作为输出量,利用支持向量机建立击穿电压预测模型。通过分析空气间隙的分段平均电场强度特性,将空气间隙的击穿特性分为有突增现象和无突增两种,借助支持向量机对无突增现象的空气间隙击穿电压做预测,预测结果良好。该预测方法可为工程绝缘设计提供依据,减少耐压试验次数。 Air insulation gaps are widespread in high-voltage power transmission systems.In order to predict the power frequency breakdown voltage of the short air gap,the segmented average electric field strength on the air gap breakdown path is used as the input,and the power frequency breakdown voltage of the gap is the output.The support vector machine is used to establish the breakdown voltage Forecast model.By analyzing the segmented average electric field strength characteristics of the air gap,the breakdown characteristics of the air gap are divided into two types:with sudden increase and without sudden increase.With the help of support vector machines,the breakdown voltage of the air gap without sudden increase is predicted.The model get a good forecast.This prediction method can provide a basis for engineering insulation design and reduce the number of withstand voltage tests.
机构地区 福州大学电气工程与自动化学院
出处 《电气开关》 2021年第1期55-58,87,共5页 Electric Switchgear
基金 国家自然科学基金项目(51607041) 电力系统国家重点实验室资助课题(SKLD19KM06)。
关键词 空气间隙 分段平均电场强度 支持向量机 击穿电压预测 air gap segmented average electric field strength support vector machine breakdown voltage prediction
