一种基于变流器开关状态控制的换流变压器局部接地绝缘缺陷在线监测新策略

Power electronic converters are operated under rapid and frequent switching actions. Large electrical stresses and various current harmonics have critical effects on insulation ageing and reliable operation of converter transformers. In this article, a novel online monitoring strategy for the localized grounding insulation defect is proposed based on the control of converter switching states (CSS)...