Hybrid Active Filter And Its Power Supply System In Shaoguan Smelter

The paper is concerned with the important project of Shaoguan smelting factory in 2002 - the power net harmonics elimination in Shaoguan smelting factory .According to the results obtained by the harmonics measurement device and the actuality analysis of the power net in our factory, we have taken appropriate measures to eliminate the harmonics.Firstly, this paper introduces the concept of harmonics and its harm to power grid. And it also demonstrates the necessity of eliminate harmonics, and briefly introduces several methods to eliminate harmonics.Secondly, it recommends the fundamental theories of harmonic analysis and the difference between those methods. And then introduces several methods of eliminating harmonics, and emphatically introduces the working principle of HAPF(Hybrid Active Power Filter) which have excellent performance and good application foreground.Finally this paper illustrates the key techniques used in the development of the system and the application results of the project, combining with the development of HAPF. The application results used in the power net shows that the system is very effective in eliminating harmonics and has achieved good economical results.