Analyses on an electronic voltage transformer's failure by its resonance with very fast transient overvoltage and suppression

作     者：Ruoyu Han Houda Zhu Qing Chen Hongbin Li Yue Tong Linshan Han Yang Jiao 

作者机构：School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhanChina China Electric Power Research InstituteWuhanChina School of Artificial Intelligence and AutomationHuazhong University of Science and TechnologyWuhanChina 

出 版 物：《High Voltage》 (高电压（英文）)

年 卷 期：2024年第9卷第1期

页      面：150-162页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0837[工学-安全科学与工程] 0703[理学-化学] 

基　　金：National Natural Science Foundation of China Grant/Award Number:U1866201 

主　　题：transient resonance mentioned 

摘      要：As voltage measuring devices are widely used in the high voltage power system with a primary-secondary-fusion structure,electronic voltage transformers are directly connected to the primary conductor and would face much more serious electromagnetic environments than general secondary *** a result,they would still experience failures even when general protection measures are adopted to suppress overvoltages *** address this issue,an innovative method is proposed after analyses are conducted on the resonance between a transformer and an *** this method,an air-cored coil is installed in a transformer to artificially shift its natural frequency and to dodge the high-frequency dominant component of a transient overvoltage,avoiding the aforementioned resonance and suppressing the secondary *** addition,simulations and laboratory tests are conducted to prove this method s validity.