Study Harmonic Current Detection and Compensation of Active Power Filter in Power System of Platform

In order to meet the demand of harmonic current detection and compensation of active power filter in power system of oil production platform, The paper proposes the harmonic current detection method based on the instantaneous reactive power theory and analyzes this method. the simulation and experiment show that this detection method not only has fast dynamic response speed, also has very good accuracy. For the compensation control strategy of APF, firstly, this paper builds the mathematical model of the three-phases three-wires parallel active power filter and then it studies the basic PWM control principles of the space voltage vector. The simulation and model machine experiment results show that the space voltage vector PWM control strategy has the best compensation effect.