摘要
针对配网内部故障难以提前发现并预防的问题,提出了一种新型配网高压设备运行隐患在线监测方法,旨在通过测量配网高压设备各相之间的电压总谐波畸变率(THD)最大差异值,并与规程设定的限值进行比较,从而判定设备是否存在隐患。基于此,设计并开发了一台高压设备运行隐患在线检测仪。最后,为验证所提方法的有效性,选取了150台不同类型的高压运行设备进行验证实验。结果表明,该方法能够极大降低隐患排查难度,可为配网高压设备正常运行提供有力保障,具有较好的实用性。
A new online monitoring method for hidden dangers in the operation of high-voltage equipment in the dis-tribution network is proposed to address the problem of difficult early detection and prevention of internal faults.The aim is to determine whether the equipment has hidden dangers by measuring the maximum difference in total harmonic distortion(THD)between the voltage phases of high-voltage equipment in the distribution network and co-mparing it with the limit values set by regulations.Based on this,an on-line detector for hidden dangers of high-voltage equipment is designed and developed.Finally,in order to verify the effectiveness of the proposed method,150 different types of high-voltage operation equipment are selected for verification experiments.The results show that this method can greatly reduce the difficulty of identifying hidden dangers,provide strong support for the normal operation of high-voltage equipment in the distribution network,and have good practicality.
作者
李峰
王翠林
张文伟
樊小朝
LI Feng;WANG Cui-lin;ZHANG Wen-wei;FAN Xiao-chao(State Grid Hunan Province Electric Power Co.,Ltd.Xiangxi Power Supply Branch,Jishou 416000,China;Department of New Energy Science and Engineering,Xinjiang University of Engineering,Urumqi830023,China)
出处
《电力电子技术》
2025年第3期65-69,共5页
Power Electronics
基金
国家自然科学基金(52266018)
新疆工程学院博士启动金项目(2023XGYBQJ01)
新疆维吾尔自治区重点研发项目(2022B01009)。
关键词
配网
高压设备
总谐波畸变率
distributionnetwork
high-voltage equipment
total harmonie distortion
