基于合闸控制策略的变压器励磁涌流抑制措施研究  

Study on inrush current suppression method based on the breaker control strategy

作　　者：沃建栋[1] 郑涛[2] 万磊 柳维衡[2] 

机构地区：[1]金华电业局,浙江金华321000 [2]华北电力大学电气与电子工程学院,北京102206 [3]山东电力集团超高压公司,山东济南250000

出　　处：《电力系统保护与控制》2010年第22期32-36,共5页Power System Protection and Control

基　　金：国家自然科学基金资助项目(50607006)~~

摘　　要：现有处理励磁涌流的主要措施是采用数学方法对其进行特征识别,防止继电保护装置误动,而励磁涌流引起的其他危害却无法避免。介绍了控制合闸策略的基本理论,对延时合闸策略和瞬时合闸策略的方法进行了说明,并提出了故障后变压器空投的合闸方案,有效地抑制了励磁涌流的产生。在考虑铁芯剩磁的情况下,通过仿真实验分别依据两种合闸策略对变压器进行空载合闸,仿真结果表明:该方法可大幅减小励磁涌流的冲击,使变压器迅速进入稳态。In order to prevent the mal-operation of protective relays, the current major countermeasures are to recognize inrush currents based on the mathematical methods. Damages to other aspects caused by inrush current can not be avoided. This paper introduces basic theory of the breaker control strategy, illustrates methods of delayed switching strategy and rapid switching strategy, and proposes the closing scheme of transformer after fault, which can eliminate the occurrence of inrush currents effectively. Simulations of transformer switching on with no-load under different core residual flux conditions have been done. Simulation results indicate that these strategies can greatly reduce the impact of inrush current so that transformers enter into steady-state operation rapidly. This work is supported by the National Natural Science Foundation of China （No.50607006）.

关 键 词：励磁涌流 控制策略 抑制方法 剩磁 分相控制 

分 类 号：TM407[电气工程—电器]