500kV豫北变电站1主变放电事故分析.docVIP

500kV豫北变电站1#主变C相高压套管放电事故分析 俎洋辉 郑强 李新雷 苗桂喜 郝安民 （安阳供电公司，河南 安阳，455000） 摘要：在500kV电压等级的变电站中，主变作为中枢电气设备的作用是举足轻重的。但是由于运行时间过长或是产品质量等问题的存在，直接威胁着主变的安全运行，使电网的可靠性降低。在对500kV豫北变电站1#主变进行变压器油色谱分析检查时，发现该主变变压器油乙炔含量超标，通过跟踪检查，发现该主变变压器油乙炔含量又有增加趋势，吊罩发现豫北1#主变C相高压套管底部放电，这一事故是豫北地区第一起500kV变电站主变放电事故。本文针对通过这一事故产生的原因，阐述500kV高压套管产生放电的过程，以及事故处理经过，总结出此类事故产生的根本原因以及防御该类事故的典型经验。 关键词：电压等级 高压套管 放电 1# lord of north transformer substation of the 500 kV yu changes the C mutually a tube of high pressure turns on electricity the trouble analysis ZU Yang-hui ZHENG-Qiang LI Xin-lei MIAO Gui-xi HAO An-min (Anyang Power Supply Company, Anyang, Henan, 455000) Abstract: In the transformer substation of the 500 kV electric voltage grade, the lord changes the function of be the axis electricity equipments is prominent.But because of circulate time lead long or the product quantity etc. existence of problem, directly threaten the safety that lord change movement, make the credibility of the charged barbed wire net lower.While changing to carry on the transformer oil color table analysis check to 1# lord of north transformer substation of the 500 kV yu , discover that that lord changes the super mark of the transformer oil acetylene content, pass to follow the check, discover that that lord changes the transformer oil acetylene content and have the increment trend, mourn the cover to discover that north 1# lord of yu changes the C is mutually a tube the bottom turn on electricity, this trouble is a north region of yu and together the 500 kV transformer substation lord changes to turn on electricity the trouble.This text aims at to pass the output reason of this trouble, elaborating the process that the high pressure a tube of 500 kV creation turn on electricity, and the trouble processing process, tally up a this kind of basic reason with output trouble and defendoof the typical model experience of that type of trouble. Keyword:Electric voltage grade A tube of high pressure Turn on electricity 0.引