电力系统保护与控制2024，Vol.52Issue(14)：59-70,12.DOI:10.19783/j.cnki.pspc.240186
基于单芯移相变压器的差动保护配置研究
Differential protection configuration based on a single core phase shifting transformer
摘要
Abstract
A phase-shifting transformer can effectively regulate the flow of electricity,and it is essential to equip it with high-performance protection devices to ensure the safe and reliable operation of the power system.Taking a 35 kV single-core symmetrical phase-shifting transformer as the research object,this paper proposes a corresponding protection scheme for the transformer.First,the operating characteristics of the transformer are analyzed based on Kirchhoff's current law and the law of electromagnetic induction.Then,based on its topological structure,the installation position of the protection current transformer is designed,and electrical and magnetic balance differential protection schemes are constructed.This scheme can cover the internal phase-to-phase faults and winding-to-winding faults of each winding and the winding lead of the single-core phase-shifting transformer.Finally,a single-core phase-shifting transformer model is built on the Matlab/Simulink platform by setting up typical faults within the transformer body,and the validity of the two differential protection configuration schemes proposed is verified.关键词
单芯移相变压器/区内故障/电平衡差动保护/磁平衡差动保护Key words
single-core phase shifting transformer/internal fault/electric balance differential protection/magnetic balance differential protection引用本文复制引用
郑涛,申由,于佳旭,眭程曦,薛玉石,张栋..基于单芯移相变压器的差动保护配置研究[J].电力系统保护与控制,2024,52(14):59-70,12.基金项目
This work is supported by the Joint Project of National Natural Science Foundation of China(No.U2166205). 国家自然科学基金联合基金项目资助(U2166205) （No.U2166205）
国网河北省电力有限公司科技项目资助(kj2022-074) （kj2022-074）
