抑制电力电容投切消极影响的控制策略  

A control strategy to suppress negative influence of power capacitor switching

作　　者：海涛[1] 时雨 陈永鉴 李俊杰 刘振语 HAI Tao;SHI Yu;CHEN Yong-jian;LI Jun-jie;LIU Zhen-yu(College of Electrical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学电气工程学院,南宁530004

出　　处：《桂林理工大学学报》2021年第2期415-420,共6页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(51867003);广西科技计划项目(桂科AB16380193)。

摘　　要：为抑制机械开关投切补偿电容过程中易产生的大电流、过电压等消极影响,提出一种抑制电容投切消极影响的同步控制策略,加入基于过零检测的实时周期测量环节,并根据投切环境变化确定时间补偿值来预测投切开关动作时间。通过仿真及测试确定该策略的可行性,并运用该策略进行投切实验。实验结果表明,通过该控制策略,电容在电压过零点安全投入,电流过零点安全切除,无明显消极影响,验证了该策略切实可行。Suppressing large current and overvoltage usually happen in the process of switching the compensa-tion capacitor of the mechanical switch.A synchronous control strategy to suppress the negative influence of ca-pacitor switching is proposed.The strategy of real-time period measurement is put forward based on zero-cross-ing detection.The time compensation value is determined according to the switching environment to predict the switching operation time.The feasibility of the strategy is determined through simulation and testing.This strat-egy was applied in the switching experiments.The results show that through this control strategy,the capacitor can be switched on at the zero-crossing voltage and the zero-crossing current can be cut off without significant negative effects.

关 键 词：电容补偿 同步控制 过零检测 投切实验 

分 类 号：TM53[电气工程—电器] TP23[自动化与计算机技术—检测技术与自动化装置]