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METHOD FOR DIAGNOSING INTERNAL FAULT OF OIL-IMMERSED TRANSFORMER THROUGH COMPOSITION RATIO OF DISSOLVED GAS IN OIL
METHOD FOR DIAGNOSING INTERNAL FAULT OF OIL-IMMERSED TRANSFORMER THROUGH COMPOSITION RATIO OF DISSOLVED GAS IN OIL
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机译:通过油中溶解气体组成比确定油浸式变压器内部故障的方法
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摘要
The present invention relates to a method for diagnosing an internal fault of an oil-immersed transformer by analyzing the composition ratio of dissolved gas in oil that is caused when an internal fault of the oil-immersed transformer occurs. According to the present invention, a method for diagnosing an internal fault of an oil-immersed transformer by extracting and analyzing dissolved gas in oil from the oil-immersed transformer for which an internal fault is to be diagnosed comprises: a first step of calculating the composition ratio of each of CH4/H2, C2H2/C2H4, C2H4/C2H6 and C2H4/CH4 from among the extracted dissolved gas in oil; a second step of determining whether the internal fault is an electrical fault or a thermal fault using the calculated composition ratios of CH4/H2 and C2H2/C2H4; and a third step of determining, if said internal fault is determined to be an electrical fault in the second step, whether the electrical fault is a partial discharge (PD), a discharge of low energy (D1) or a discharge of high energy (D2) using the calculated composition ratios of C2H2/C2H4 and C2H4/C2H6.
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机译:本发明涉及一种通过分析当油浸式变压器的内部故障发生时引起的油中溶解气体的组成比来诊断油浸式变压器的内部故障的方法。根据本发明,一种用于通过从要诊断其内部故障的油浸式变压器中提取和分析油中的溶解气体来诊断油浸式变压器的内部故障的方法,该方法包括:计算所述故障的第一步骤。提取的油中溶解气体中CH 4 / H 2,C 2 H 2 / C 2 H 4,C 2 H 4 / C 2 H 6和C 2 H 4 / CH 4的组成比;第二步,使用计算出的CH4 / H2和C2H2 / C2H4的组成比,确定内部故障是电气故障还是热故障;第三步,如果在第二步中确定所述内部故障是电气故障,则确定电气故障是局部放电(PD),低能量放电(D1)还是高能量放电(PD)。 D2)使用计算出的C2H2 / C2H4和C2H4 / C2H6的组成比。
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