小电流接地系统整流变压器副边电容性过电压的研究

The study of secondary over-voltage for rectifier transformer in the non-effectively grounded system

以某铸造厂7000kVA中频电炉供电系统为例,分析小电流接地系统十二脉整流变压器由于原副边之间分布电容、原边(输电线)对地分布电容以及副边对地分布电容的存在,当原边发生缺相或某相接地故障时,变压器副边产生电容性耦合过电压的原因,并提出相应的解决方案.

Taking a 7200KVA power system for medium-frequency induction furnaceas the example, the reason for over-voltage of the non-effectively grounded system of rectifier transformer is determined and a corresponding solution is proposed.