Lilong Dou

Aug 24, 2023 | mdpi.com | Shuaibing Li |Hongwei Li |Zongying Li |Lilong Dou

1. IntroductionThe on-load voltage regulating a transformer plays a crucial role in power systems by regulating voltage and reactive power flow to ensure smooth operation. The oil-immersed on-load tap changer (OLTC) is a key component of the on-load voltage-regulating transformer responsible for voltage regulation. However, it is prone to wear, spark, and ablation during the tapping process, which can degrade its performance.