紫外脉冲计数法测量直流电晕起始及熄灭电压  

Measuring DC Corona Inception and Extinction Voltage by Pulse Counts Using UV Corona Monitor

作　　者：王柯[1] 廖永力 王黎明[1] 关志成[1] 霍锋[3] 胡伟[3] 

机构地区：[1]清华大学深圳研究生院,深圳518055 [2]南方电网技术研究中心,广州510623 [3]国网电力科学研究院,武汉430074

出　　处：《高电压技术》2010年第4期862-868,共7页High Voltage Engineering

基　　金：国家重点基础研究发展计划(973计划)(2009CB724503)~~

摘　　要：为了能够指导均压环和屏蔽环等的设计和改良使其满足特高压工程的需要,需要研究其电晕特性。研究的难点在于如何对可见电晕做出判定,常用的判定方法受实验人主观感觉和环境影响很大,会降低实验数据的准确性和可靠性。为此,提出了基于自主研制的紫外电晕监测仪进行电晕起始、熄灭电压的测量方法,并利用其在实验室对正、负极性的直流电压下棒-板电极的电晕起始、熄灭电压进行了测量,随后在国网电力科学研究院武汉院区的特高压户外实验场对正极性直流电压下多种外径和管径的均压环做了测量。结果表明该方法可以有效排除人工观察主观感受的影响,用于电晕起始、熄灭电压的测量。In order to guide the design and improvement of grading and shielding rings to meet the requirements of UHV projects in China,research on corona characteristics of these components is needed. A new method to measure DC corona inception and extinction voltage based on UV corona monitor was presented. Measurements of corona inception and extinction voltage on the rob tip in a rob-plate setting under both positive and negative DC voltage were carried out in the laboratory. The same measurements on grading rings with different diameters under positive DV voltage were performed in State Grid Electric Power Research Institute. The results show that this method can be used to obtain the corona inception and extinction voltage.

关 键 词：紫外电晕监测 可见电晕 电晕起始电压 电晕熄灭电压 脉冲计数法 电晕峰值分布 

分 类 号：TM835[电气工程—高电压与绝缘技术]