Research on harmonic compensation effects for a kind of isolated power system

Due to the disadvantages of passive filter such as big size, easy occurrence of resonance with the power and the poor compensation effect, the active harmonic compensation technology was put forward in recent years. Compared with the harmonic compensation in the independent power system, active compensation supported by embedded technology can quickly achieve the single harmonic compensation and all compensation, with good compensation effect and flexible operation. An experimental platform to solve the harmonic current of the isolated oil rig power supply system is built up in this paper. Besides the introduction of the principles and compositions of active compensation device as well as the extraction and control of the compensation current, the results of harmonic compensation of the device in three-phase three-wire power system on the experimental platform is emphasized, as well as the methods to improve the compensation effect. The platform lays a solid foundation for the ultimate application of compensate device in the oil drilling power system.