摘要
为了判断特高压避雷器的运行工况,针对国家电网公司特高压交流试验基地的情况,在4次1000kV变压器投合的背景下,对6相特高压避雷器用监测器的动作次数和电流进行了分析。分析表明,晋东南—荆门1000kV特高压交流试验示范工程1000kV瓷外套式金属氧化物避雷器技术协议中提出的监测器的下限动作电流难以正确反应避雷器实际运行工况,为此提出了监测器门槛动作电流的新概念并明确了门槛动作电流的区间范围,按此原理调整监测器将能更准确的动作,更利于特高压避雷器的运行工况判断。
For judging the operating condition of the Ultra-High-Voltage arresters, the overvoltage level in the AC Ultra-High-voltage test base of SGCC is researched. In the background of 1000 kV transformer switching on for four times, the action times and the current of the 6 phases of the Ultra-High-Voltage arrester monitor are researched. It is showed that according to 1000 kV porcelain Metal-Oxide-Arresters technology agreement of the Jindongnan-Jingmen 1000 kV Ultra-High Voltage AC testing demonstration project, it is difficult to judge the real act condition of the monitor by the lower limit of the action current. A new concept of current threshold for the monitor is proposed and the range of monitor of the threshold action current is suggested. By this principle, the new designed monitor will he able to act more accurately. It is more beneficial to judge the operating condition of the Ultra- High-Voltage arresters.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2008年第11期2295-2299,共5页
High Voltage Engineering
基金
国家电网公司重点科技项目(SGTGY[2008]614)~~
