电网技术2025，Vol.49Issue(7)：2979-2988,中插84-中插85,12.DOI:10.13335/j.1000-3673.pst.2024.0309
对称型双芯移相变压器复合型差动保护方案研究
Research on Compound Differential Protection Method of Symmetrical Dual Core Phase Shifting Transformer
摘要
Abstract
As a power flow control equipment,symmetrical dual core phase shifting transformer can realize the dynamic adjustment of transmission power transmission power of transmission lines,which greatly improves the flexibility of power flow transmission.However,due to its complex and compact wiring form and internal structure,the symmetrical dual core phase shifting transformer has complex topological structure and the coupling and interleaving of internal fault characteristics,which brings difficulties to its body protection configuration.In order to solve this problem,based on the analysis of its magnetic circuit structure,this paper establishes a symmetrical dual core phase shifting transformer composite differential protection scheme based on basic circuit principles such as Kirchhoffs current law and electromagnetic induction law.This scheme configures only one set of relays which can reflect the turn-to-turn and turn-to-ground faults of series transformers and excitation transformers and the short-circuit faults of the lines between them.In addition,the specific fault location is realized in combination with the current balance differential,not only reducing the actual number of current transformers,but also increasing economic benefits.Eventually,in order to verify the feasibility and effectiveness of the scheme proposed in this paper,a simulation model of symmetrical dual core phase shifting transformer is established by MATLAB/Simulink and a large number of simulation is carried out.关键词
对称型双芯移相变压器/本体保护/复合型差动保护/电平衡差动/故障定位Key words
symmetrical dual core phase shifting transformer/transformer protection/composite differential protection/current balance differential/fault location分类
信息技术与安全科学引用本文复制引用
郑涛,眭程曦,张骥,张红梅,路宇,郑紫尧..对称型双芯移相变压器复合型差动保护方案研究[J].电网技术,2025,49(7):2979-2988,中插84-中插85,12.基金项目
国家自然科学基金联合基金项目(No.U2166205) （No.U2166205）
国网河北省电力有限公司科技项目项目(混合型潮流控制器保护系统及装置研究,kj2023-062).Project Supported by Joint Funds of the National Natural Science Foundation of China(No.U2166205) （混合型潮流控制器保护系统及装置研究,kj2023-062）
State Grid Hebei Electric Power Co.,Ltd.,Science and Technology Project Funding(kj2023-062). （kj2023-062）
