摘要
平均功率法同相供电补偿电流检测,需要积分一个周期才能得出检测结果,存在实时性差的缺点,且受电网电压畸变影响。提出了两种补偿电流检测方法:有延时的两相构造和无延时的两相虚拟。通过理论分析和仿真结果证明,两种方法都能达到对同相供电系统补偿电流的实时检测,平衡三相,消除三相谐波及无功电流。后者算法简单,动态跟踪速度快,检测精度高。
It needs to integrate one period to get the results of average power method on detecting compensating currents in cophase power supply system which leads to bad real time detecting and easily be affeeted by aberrant voltage. Two detecting methods on compensating currents, including two phase with time delay and two virtual phase without time delay, are proposed in this paper. The theoretical analysis and simulation results show that both two methods can realize detecting compensating currents in cophase power supply system, balancing three-phase, filtering harmonics and reactive power currents. The latter method has the characteristics of simple arithmetic, quick dynamic response and high detecting precision.
出处
《继电器》
CSCD
北大核心
2006年第2期53-57,共5页
Relay
关键词
同相供电
补偿电流
实时检测
有源滤波器
eophase power supply
compensating currents
real-time detecting method
active power filter
