主变发生近区短路故障跳闸后高压试验  

High voltage test after tripping due to short circuit fault near the main transformer

作　　者：闫明飞 Yan Mingfei(Shenzhen Power Supply Bureau Co.,Ltd,Shenzhen Guangdong,518000)

机构地区：[1]深圳供电局有限公司,广东深圳518000

出　　处：《电子测试》2022年第10期102-104,共3页Electronic Test

摘　　要：电力变压器作为电力系统中重要的设备之一,变压器跳闸后,会给供电可靠性带来巨大威胁,影响电网稳定,供电可靠性降低,直接影响用户用电。主变事故跳闸后,应对主变进行试验,查找事故原因,判断主变是否异常,能否立即使用等等,从而达到快速复电。抢修试验一般包括变压器绕组变形试验、绝缘特性试验、变压器的直流电阻试验。针对上述三种试验,介绍了相关试验的试验方法,同时也对相应试验的试验原理进行了分析,对今后进行变压器抢修试验具有一定的借鉴意义。As one of the important equipment in the power system,the power transformer will bring a great threat to the power supply reliability after the transformer trips,affect the stability of the power grid,reduce the power supply reliability,and directly affect the power consumption of users.After the main transformer trips in an accident,the main transformer shall be tested to find out the cause of the accident,judge whether the main transformer is abnormal,whether it can be used immediately,etc.,so as to achieve rapid power restoration.The emergency repair test generally includes transformer winding deformation test,insulation characteristic test and transformer DC resistance test.For the above three tests,the test methods of relevant tests are introduced,and the test principle of corresponding tests is also analyzed,which has certain reference significance for transformer emergency repair test in the future.

关 键 词：主变跳闸 绕组变形 绝缘特性 直流电阻 

分 类 号：TM421[电气工程—电器]