摘要
在变压器经济运行过程中存在着空载合闸的现象,而在随机关合空载变压器的时候会产生幅值很大的励磁涌流,可能导致继电保护装置误动作,降低电能质量。针对此种情况,提出一种变压器软启动控制策略来有效减小励磁涌流,并基于PSCAD/EMTDC搭建的变压器空载合闸仿真模型,通过仿真算例分析,验证了变压器软启动控制策略的可行性和有效性。
There is a no-load switching phenomenon in the process of economic operation of transformers,and it will produce large amplitude of the inrush current when circuit breakers randomly close no-load transformer, and it may lead to relay protection device malfunction and reduce electric energy quality. This paper presents a soft start method,and it can effectively reduce the inrush current in transformer no-load closing. it builds the model of the transformer transformer no-load switching through PSCAD simulation software,and through the a-nalysis of simulation results,it can verify the feasibility and effectiveness of this control strategy.
出处
《东北电力大学学报》
2013年第5期31-35,共5页
Journal of Northeast Electric Power University
关键词
励磁涌流
变压器软启动
变压器经济运行
PSCAD仿真
Inrush current
Transformer soft start
Economic operation of transformer
PSCAD simulation
