Title :
Harmonic current suppression for three phase PV generation system under unbalanced grid voltage
Author :
Ting Shou ; Huidong Wang ; Tieming Zhu ; Lianhuan Zhu ; Qianggang Wang ; Xiaoxuan Lou ; Jiajia Wang ; Niancheng Zhou
Author_Institution :
Power Supply Bur. of Xiaoshan, Hangzhou, China
Abstract :
The ride-through operation of photovoltaic (PV) generation under unbalanced grid voltage will produce apparent harmonic current. This paper studies on power control of PV under unbalanced voltage, and has analyzed the total harmonic distortion (THD) and each order of the harmonics in the inverter currents. Then the analytic formulas of power fluctuation, current THD and each order of current harmonic of the PV inverter are derived, and two algorithms of the adjustment coefficients of PV power control are proposed. The control strategy model of current harmonic suppression under unbalanced grid voltage is built. The feasibility of this method is verified by the simulation result produced by PSCAD/EMTDC.
Keywords :
harmonic distortion; harmonics suppression; invertors; photovoltaic power systems; power control; power grids; PSCAD-EMTDC; PV inverter; PV power control; apparent harmonic current; current THD; harmonic current suppression; photovoltaic generation; power control; power fluctuation; three phase PV generation system; total harmonic distortion; unbalanced grid voltage; Fluctuations; Harmonic analysis; Photovoltaic systems; Power system harmonics; Reactive power; Voltage control; harmonic suppression; odd harmonic; photovoltaic; power fluctuation; unbalanced grid voltage;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2013 IEEE PES Asia-Pacific
Conference_Location :
Kowloon
DOI :
10.1109/APPEEC.2013.6837219
