Xiu Zhou

Aug 12, 2024 | mdpi.com | Xiu Zhou |Jin Bai |Lin Zhu |Tian Tian

1. IntroductionThe 750 kV transformers that are crucial electrical equipment in the Yinchuan East converter station directly impact the safe and stable operation of Ultra-High-Voltage Power Grids in Northwest and North China. Many researchers have carried out a statistical analysis of transformer faults and found winding short-circuit faults are a common type of fault for transformers [1]. The breakdown and surface discharge of interturn insulation are the main causes of short-circuit faults [2].

Feb 22, 2024 | mdpi.com | Xiu Zhou |Yan Luo |Lin Zhu |Jin Bai

1. IntroductionIn recent years, the UHVDC transmission system has ushered in a vigorous momentum of development [1]. As one of the indispensable key electrical components in this system, the stable operation of converter transformers is crucial to the safety and stable operation of the whole system [2]. Iron core is the core component of the converter transformers, and once failure occurs, it may lead to widespread power failure, resulting in huge economic losses [3].