| In the power market, power supply behaves as a kind of financial service, being as merchandise, power has quality like the other merchandises. With the development of the power electric technology, nonlinear loads and the impulse loads make the power quality declining, and have seriously influenced the normal production and living of people.In this paper, the author analyzes the reasons and harm of the decline of power quality, and introduces several methods to promote power quality at present inland and abroad. The author investigated the current situation of power system of Ulanqab, measured and calculated its power quality, and finally put forwarded several measures to promote the power quality of Ulanqab power system, so that to supervise the layout, construct and management of the city power system. As an example of Tugui plant, we carry on the process of choice the filters and capacity basing on calculation and tested the level after the instruments are installed, which incline to satisfy the national standard. |