瓦斯继电器定值校验及影响因素分析
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摘要
瓦斯继电器是变压器内部故障的主要保护元件,能灵敏反应变压器短路故障、铁心故障、绕组内部匝间短路及绝缘劣化和油面下降。因此,需定期对瓦斯继电器进行定值校验。本文简要介绍了油杯式和空芯浮子式瓦斯继电器动作的原理,并详细分析了瓦斯继电器定值的确定和校验方法,分析了影响试验结果的原因,针对瓦斯继电器校验提出了相关建议。
Gas relay is the main protection component of transformer internal fault. It can sensitively react transformer short circuit fault, core fault, winding internal turn-to-turn short circuit, insulation deterioration and oil level drop.Therefore, it is necessary to check the fixed value of gas relay regularly. This paper briefly introduced the operation principle of oil cup type and air core float type gas relay, and analyzed in detail the determination and calibration method of gas relay fixed value, analyzed the reasons affecting test results, and put forward relevant suggestions for gas relay calibration.
Gas relay is the main protection component of transformer internal fault. It can sensitively react transformer short circuit fault, core fault, winding internal turn-to-turn short circuit, insulation deterioration and oil level drop.Therefore, it is necessary to check the fixed value of gas relay regularly. This paper briefly introduced the operation principle of oil cup type and air core float type gas relay, and analyzed in detail the determination and calibration method of gas relay fixed value, analyzed the reasons affecting test results, and put forward relevant suggestions for gas relay calibration.
引文
[1]李璐,陈正鸣.气体继电器误动作分析及处理[J].高压电器,2009(6):145-147.
[2]樊静波.河曲电厂发变组非电量保护分析[J].河南科技,2017(3):122-124.
[3]王楠,孙成.220kV变压器有载分接开关瓦斯继电器故障分析[J].变压器,2014(6):74-76.
[4]国家能源局.瓦斯继电器检验规程:DL/T 540—2013[S].北京:中国电力出版社,2013.
[5]单莉,蒋昆,陈文礼,等.浮球式瓦斯继电器真空密封试验装置的研制[C]//2013年中国电机工程学会年会.2014.
[2]樊静波.河曲电厂发变组非电量保护分析[J].河南科技,2017(3):122-124.
[3]王楠,孙成.220kV变压器有载分接开关瓦斯继电器故障分析[J].变压器,2014(6):74-76.
[4]国家能源局.瓦斯继电器检验规程:DL/T 540—2013[S].北京:中国电力出版社,2013.
[5]单莉,蒋昆,陈文礼,等.浮球式瓦斯继电器真空密封试验装置的研制[C]//2013年中国电机工程学会年会.2014.