程启明,胡晓青,吴凯,白园飞,赵晋斌.统一电能质量调节器的谐波检测与补偿策略研究[J].电测与仪表,2012,49(3):19-23. CHENG Qi-ming , HU Xiao-qing , WU Kai , BAI Yuan-fei , ZHAO Jin-bin.The Research of Harmonic Detection and Control Strategy for Unified Power Quality Conditioner[J].Electrical Measurement & Instrumentation,2012,49(3):19-23.
统一电能质量调节器的谐波检测与补偿策略研究
The Research of Harmonic Detection and Control Strategy for Unified Power Quality Conditioner
The unified power quality conditioner(UPQC) combines the advantages of both the series active filter and the parallel active filter,it can compensate current and voltage as a whole at the same time,and it has a comprehensive adjustment function of power quality.In this paper,the dq0 harmonic detection method is used as an integrate detection method of UPFC voltage and UPFC current,the SVPWM control strategy is used as a control methods in the series side UPQC,the active disturbance rejection controller(ADRC) is used in the parallel side that the load current and the source voltage are all contributed to total disturbances,and the expending state observer is used to estimate.Then the disturbance can be compensated by the nonlinear state error feedback control law.So the complicated current reference calculation is avoided,which makes the system adaptive to the different load.The detection method and the compensation strategy of voltage and current are simulated on Matlab software platform.The simulation results verify the correctness and the effectiveness of the detection method and the control strategy in the paper.