王睿宣,孙玉坤,黄永红,李秋燕.基于FBD法的光伏并网系统谐波和无功电流的检测与补偿[J].电测与仪表,2015,52(1):. WANG Rui-xuan,SUN Yu-kun,HUANG Yong-hong,LI Qiu-yan.Method for Detecting Harmonics and Reactive Current Based on FBD Method Applied in the grid-connected PV System[J].Electrical Measurement & Instrumentation,2015,52(1):.
基于FBD法的光伏并网系统谐波和无功电流的检测与补偿
Method for Detecting Harmonics and Reactive Current Based on FBD Method Applied in the grid-connected PV System
Based on the grid-connected PV system and the parallel APF have many similarities on topological structure, operation mode and control method, we put forward a new kind of grid-connected PV integration system, which can combine active filter with compensation of reactive power. In order to detect the harmonics and reactive current of the power supply system, we propose a detection method based on FBD. Compared with the current detection method based on the theory of instantaneous reactive power, this method has no complex Park transform and d-q transform, so it can detect the real-time current more effectively. In the meanwhile, it can be flexibly applied in unbalanced three-phase power supply system. The simulation results have shown the correctness and effectiveness of the current detection method.
