欢迎来到天天文库
浏览记录
ID:52500481
大小:410.36 KB
页数:6页
时间:2020-03-28
《高压并联电容器在线监测系统的研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第34卷第2期电力电容器与无功补偿Vo1.34No.22013年4月PowerCapacitor&ReactivePowerCompensationApr.2013高压并联电容器在线监测系统的研究张建军,孙红华(1.唐山供电公司,河北唐山063000;2.北京诺德威电力技术开发有限责任公司,北京100070)摘要:高压并联电容器在长期运行中,由于缺陷、故障较多,而目前电网检修运行方式无法有效实现提前预判设备故障,状态检修工作实施困难,以致易出现单台电容器故障扩大为整组故障,存在较大的设备安全运行隐患。按照国家电网公司智能化电网建设要求
2、,状态检修工作要求,有必要研究出一种高压并联电容器在线监测系统,以及时发现设备异常,为高压并联电容器状态检修工作提供依据。因此本文提出了基于对温度值、电容值和不平衡电压进行检测的高压并联电容器在线监测方法,介绍了其原理和结构。实际运行表明高压并联电容器在线监测系统对电容量的监测精度可以达到0.5级,能够及时发现设备异常对降低高压并联电容器缺陷率、事故率,具有重要意义。关键词:高压并联电容器;在线监测;电流传感器;电容量;温度;不平衡电压;无线传输中图分类号:TM531.4文献标识码:A文章编号:1674—1757(2013)02-00
3、22-06ResearchofOn-lineMonitoringSystemforHighVoltageShuntCapacitorsZHANGJian.Jun,SUNHong.hua(1.TangshanPowerSupplyCompany,Tangshan063000,China;2.BeijingNUODEWEIPowerTechnologyDevelopmentCo.,Ltd.,Beijing100070,China)Abstract:Sincemanydefectsandfaultsofhighvoltageshuntcap
4、acitorduringoperationperiod,andthepresentmaintenanceandoperationmodeinpowerdcannoteffectivelypredictthefaultsinad—vance,theconditionbasedmaintenanceisdificulttobeimplemented,thuscausingthefaultofsingleunitofcapacitortodevelopintocompletebankfaultandbiggersafeoperationhi
5、ddendangerofequip-ments.AccordingtothesmartpowerdconstructionandconditionbasedmaintenancerequirementsofStateGridofChinaCorp(SGCC),itisnecessarytodevelopakindofon-linemonitoringsystemforhighvohageshuntcapacitorinordertofindoutabnormalitiesofequipmentsandprovidethebasisfo
6、rcondition—basedmaintenanceofhighvoltageshuntcapacitor.Inthispaper,theon—linemonitoringmeasurementmethodofhighvohageshuntcapacitorswhichbasedonthedetectionoftemperature,ca—pacitanceandimbalancevoltageisraisedanditsprincipleandstructureareintroduced.Itisindicatedbytheact
7、ualoperationthattheon·linemonitoringsystemforhighvoltageshuntcapacitorcanmonitorthecapacitanceuptoclass0.5,canfindabnormalitiesoftheequipmentquicklyandhasimportantpracticalsignificancetoreducethedefectandaccidentrateofhighvoltageshuntcapacitor.Keywords:highvoltageshuntc
8、apacitors;on—linemonitoring;currentsensor;capacitance;temper—ature;imbalancedvoltage;wirelesstransmission率因数最常
此文档下载收益归作者所有