一批油浸倒置式电流互感器故障分析及改进措施
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吴玉硕,胡春江,彭鹏,张晓玲,温定筠,王晓飞
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Fault Analysis and Improvement Measures of Oil Immersed Inverted Current Transformer
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Wu Yushuo,Hu Chunjiang,Pen Peng,Zhang Xiaolin,Wen Dingjun,Wang Xiaofei
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表2 局部放电量测试数据
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Tab.2 Test data of partial discharge capacity
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| （a）第一次：局部放电测量,时间10：35,电压（100~251）kV | | | | | | 电压/kV | 100 | 109 | 132 | 132/4min | 132/5min | 132/10min | 150 | | | | | | 放电量/pC | 背景 | 118 | 300 | 1 900 | 1 000 | 700 | 2 000 | | | | | | 电压/kV | 150/5min | 200 | 200/5min | 210/5min | 251 | 251/5min | 65 | | | | | | 放电量/pC | 3 000 | 6 000 | 500 | 150 | 550 | 90 | 熄灭电压 | | | | | | （b）第二次：加局部放电放测量,时间11：35,电压（123~408）kV | | | | | | 电压/kV | 123 | 157 | 183 | 200 | 240 | 280 | 320 | | | | | | 放电量/pC | 32 | 2 000 | 900 | 110 | 330 | 280 | 170 | | | | | | 电压/kV | 363 | 363/5min | 408/1min | 363 | 251 | 62 | | | | | | | 放电量/pC | 170 | 130 | 160 | 130 | 110 | 熄灭电压 | | | | | | | （c）第三次：在（1.2~0.8）Um/kV电压下监测局部放电 | | 电压/kV | 251 | | | | | 231 | | 210 | | 189 | 168 | | 时间 | 11:50 | 12:50 | 13:00 | 13:11 | 13:11 | 13:14 | 13:17 | 13:19 | 13:22 | 13:25 | 13:29 | | 局放量/pC | 100 | 460 | 650 | 1 400 | 1 500 | 1 600 | 2 000 | 2 100 | 2 300 | 2 400 | 2 400 | | （d）第四次：局部放电监测,时间15：05~15：55 | | 电压/kV | 168 | 189 | 210 | 210 | 210 | 210 | 210 | | | | | | 时间 | 15:06 | 15:07 | 15:08 | 15:12:30 | 15:28:30 | 15:42:26 | 15:55:33 | | | | | | 局放量/pC | 1 050 | 1 100 | 1 100 | 1 300 | 2 000 | 3 000 | 4 000 | | | | |
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