| The power plants provide the most reactive power in the whole power system. In recent years, the power of generators and the voltage of EHV transmission system keep rising significantly. So that, Voltage is not only the most important factor for the stability of electric power networks and economic running, but also the key estimate of the quality of electric power networks. Reactive power and voltage control, can reduce network losses, improve power system stability and security, and improve the economic efficiency of the networks. Automatic voltage control system (AVC) is an important means of reactive power and voltage control.This paper introduces basic control principles of AVC,By analyse the AVC practical application situation in Qinhangdao power plant, we can obtain through the AVC equipment setup around data contrast analysis:A period of operation shoes that AVCsystem is important for power system running in the status of security,high quality and economy. |
