Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《High Voltage Engineering》 2018-05
Add to Favorite Get Latest Update

Effect of Soluble Contaminants on the Effective Pollution Degree of Insulators

JIANG Xingliang;LIU Youchao;LIU Yaofeng;ZHANG Huan;LI Yongfu;ZHANG Zhijin;State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University;Maintenance Company,State Grid Hunan Electric Power Company;Electric Power Research Institute, State Grid Chongqing Electric Power Company;  
In natural conditions, different kinds of compositions of contaminants will accumulate on the surface of insulators, and many of them are soluble contaminants, which have an influence on the flashover characteristics of insulators. Consequently, taking a standard LXY4–160 insulator is taken as research subject, we performed artificial tests in which insulators were contaminated with soluble contaminants Na Cl, Na NO3, Na2 SO4, KNO3, NH4 NO3, Mg(NO3)2, Mg SO4, and Ca SO4. And the dissolution and pollution flashover characteristics were obtained. The research results show that the flashover voltage gradient of insulator is different under various soluble contaminants, as the conductivity is one of main causes. However, the same kind of soluble contaminants has similar effect on the flashover voltage gradient of insulators, the difference is less than 5%. In addition, by taking the flashover voltage gradient and percentage of different kind of soluble contaminant into account, the weight of each kind of soluble contaminant is obtained. As a result, the effective pollution degree of typical contaminant is put forward and the formula between flashover voltage gradient and effective pollution degree is presented. And the relative error is less than 5% between the calculated value and the test value according to the formula. It has a reference value to assess the contamination level in different areas.
【Fund】: 国家电网公司科技项目(SGTYHT/14–JS–188)~~
【CateGory Index】: TM216
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved