摘要
换流变压器在线监测系统是特高压换流变电站智能化的重要建设内容,其监测可靠性直接影响着换流变压器的运行寿命,目前主要通过同样检测原理的带电检测手段对其进行评估。文中通过对某±800 kV特高压换流变电站换流变压器油色谱在线监测乙炔报警与局部放电重症监护系统报警后的带电检测诊断分析,给出了在线监测系统信号报警后的缺陷分析方法以及换流变压器在线监测报警信号存在的问题,便于后续运行过程中对其进行状态评价。试验结果证明:单独的一种在线监测报警信号不能完成特高压换流变压器的运行状态评价,需结合两种非同源原理在线监测装置的报警信号分析以及相应的带电检测手段诊断才可以完成其内部缺陷的定性。
The on-line monitoring system of converter transformer is an important construction content of intelligent UHV converter substation, and its monitoring reliability directly affects the operating life of converter transformer. At present, it is mainly evaluated by the method of live detection of the same detection principle. In this paper, based on the analysis of the live detection and diagnosis of the two oil chromatograph and partial discharge on-line monitoring system of a ＋800 kV UHV converter transformer, the defect analysis method after the online monitoring system signal alarm and the problems of the online monitoring alarm signal of the converter transformer are given, which is convenient for the state evaluation of its subsequent operation. The test results show that a single on-line monitoring method cannot complete the operation status analysis of UHV converter transformer. It is necessary to combine the alarm signal analysis of the on-line monitoring device with non-homology principle and the diagnosis of the corresponding live detection method to complete the characterization of its internal defects.
作者
牛勃
马飞越
周秀
倪辉
房子祎
田禄
魏莹
周秀萍
NIU Bo;MA Feiyue;ZHOU Xiu;NI Hui;FANG Ziyi;TIAN Lu;WEI Ying;ZHOU Xiuping(Power Research Institute of State Grid Ningxia Power Co.,Yinchuan 750011,China)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第11期245-252,259,共9页
High Voltage Apparatus
关键词
在线监测
带电检测
重症监护系统
特高压换流变
局部放电
油色谱
on-line monitoring
live detection
intensive care system
UHV converter transformer
partial discharge
oil chromatography
