CAJ | 학술논문

氧化锌避雷器老化劣变的重要标志是运行电压下阻性电流增大,但对其阻性电流进行测量时存在多种干扰,给判断避雷器是否老化、受潮带来困难。文章对某变电站的氧化锌避雷器阻性电流测量结果出现负值这一特殊情况进行了详细分析,找出了阻性电流测量值为负值的主要原因。
양화자피뢰기노화렬변적중요표지시운행전압하조성전류증대,단대기조성전류진행측량시존재다충간우,급판단피뢰기시부노화、수조대래곤난。문장대모변전참적양화자피뢰기조성전류측량결과출현부치저일특수정황진행료상세분석,조출료조성전류측량치위부치적주요원인。
The important mark of the aging and degradation of zinc-oxide arrester is the increase of resis- tive current under running voltage, which leads to interferences of the measurement of the resistive cur- rent and therefore causes difficulty in judging whether it is an aging and dampened arrester. This paper makes a detailed analysis of a special case in which the measurement of the resistive current of zinc-oxide arrester turns out to be negative in a transformer substation, and finds out the main reason why the resistive current is negative.