改进的p-q检测法在D-STATCOM电流检测中的应用

详细信息

Application of Improved p-q Detection Method in D-STATCOM Current Detectio

摘要: 分析了传统的p-q检测法检测负载电流中的谐波、无功和负序电流量时产生误差的原因,提出了一种改进的p-q检测法。改进的p-q检测法利用电网中的一相电压构造虚拟的对称三相系统以代替实际电网的三相电压,可在电网电压不对称时仍能准确地检测出负载电流中的谐波、无功和负序电流,从而消除不对称因素造成的补偿电流检测的误差。仿真结果证实了该检测法的正确性。
- 电网 /
- 三相电压 /
- 电流补偿 /
- 不对称 /
- p-q检测法 /
- D-STATCOM /
- Matlab仿真
Abstract: The paper analyzed error cause by ues of traditional p-q detection method to detect harmonic current,reactive current and negative current of load current,and proposed an improved p-q detection method. The improved p-q method makes use of one-phase voltage to construct virtual and symmetrical three-phase voltage to replace real three-phase voltage,it can detect harmonic current,reactive current and negative current when voltages of power network is asymmetric,so as to eliminate error of compensation current detection caused by asymmetric cause.The simulation result validated the detection method.
- power network /
- three-phase voltage /
- current compensation /
- asymmetry /
- (p-q) detection method /
- D-STATCOM /
- Matlab simulatio