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Analysis on burning failures with 110kV dry-type reactors by salinity accumulation

机译:用盐度累积法分析110kV干式电抗器的燃烧故障

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Two times of burning failures with 110kV ACF dry-type reactors happened in ±500kV Gaoling Converter Substation because of the salinity and dirtiness accumulation. The first time happened with No.5642 ACF group at Northeast Grid side and kept burning for 2h when the dry-type reactor was totally damaged. 12 days later No.5632 ACF group at North Grid side burned and resulted in all the noise-absorbing sponge on the sound-proof cover ruined. After an investigation, the sponge accumulated the salinity airing from the near sea and got a reduction of insulation capability accompanying with humidity. The sponge burned by discharge with high voltage. After the sponge was totally removed the reactors have been working safely for one year.
机译:在±500kV高岭换流站,由于盐分和污垢的积累,110kV ACF干式电抗器发生了两次烧毁事故。第一次发生在东北电网一侧的5642 ACF组,并在干式反应堆完全损坏时保持燃烧2小时。 12天后,位于北电网一侧的No.5632 ACF组被烧毁,导致隔音罩上所有吸音海绵被破坏。经过调查,海绵积累了从近海吹来的盐度,并伴随着湿度降低了隔热能力。海绵因高压放电而燃烧。完全除去海绵后,反应器已经安全运行了一年。

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