Analysis and detection of electric field distribution characteristics of degraded insulators

Author:

Wang Lemiao1,He Baina1,Xie Yadi1,Jiang Renzhuo1,Mao Yazhe1,Zhou Yuyang1

Affiliation:

1. Shandong University of Technology, College of Electric and Electronic Engineering, Zibo 255000, PR China

Abstract

AbstractAfter long-term operation, the electrical performance of UHV transmission line insulator string decreases and zero-value insulators are prone to occur. The existence of zero-value insulators leads to the flashover of insulator strings, which causes large-scale power outages in serious cases. In order to improve the power quality and detect the zero-value insulators of transmission lines more timely and efficiently, the influence of zero-value insulators on the electric field distribution of insulator strings is simulated and calculated by finite element method. At the same time, taking the grounding current of insulator string as the cut-in point, the principal component analysis method is used to screen the effective characteristic quantities, and then as the input of artificial neural network, and the fault area of insulator string is determined by the neural network. The simulation results show that the recognition accuracy of artificial neural network based on insulator string grounding current is high, and it has certain engineering application value.

Publisher

Walter de Gruyter GmbH

Subject

Energy Engineering and Power Technology

Reference44 articles.

1. EMTP-based distributed simulation of 330kV voltage insulator strings;J Shanghai Univ Electr Power,2015

2. Grounding current characteristic study of 35kV composite insulator under pollution condition;Insul Mater,2012

3. Research on fault diagnosis of high-voltage circuit breaker based on the improved BP neural network;The 2nd international conference on information science and engineering,2010

4. Diagnosis of porcelain and glass insulators conditions using phase angle index based on experimental tests;IEEE Trans Dielectr Electr Insul,2016

5. Calculation of the voltage distribution of insulator strings in 500kV lines based on the combination of electrical field and road;High Volt Appar,2018

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3