The Voltage And Reactive Power Control System (AVC) Application Analysis In Power System

The basic goal of the power system and power enterprises is the safety, quality, economic power to the users, while the voltage-is one of the important indicators of power quality, ensure voltage quality to ensure the safe and reliable operation of power systems, the user safety and improve the service life of electrical devices, has a very important significance. The rational allocation of reactive power sources and power flow distribution to ensure the voltage quality has a decisive role, so the automatic voltage has become to improve voltage quality and reduce the burden of substation operation and maintenance personnel is very important means of reactive power control devices and software. In the automatic voltage and reactive power control device and the software, is the most widely used VQC software is installed or local control device in the substation, the working principle of the control device is the use of the vast majority of nine zone diagram method. In addition, in recent years there is a basic idea of expert system based on the four distance functions, the use of dispatching automation system control center, voltage regulation and reactive power centralized control center is arranged on the reactive power control system of voltage, the control system is very strict requirements on the reliability of control automation system, the need to consider the enough safety measures.In this paper, the power system reactive power related problems of management and control, reactive power control system based on voltage (AVC) technique and control strategy, aiming at the automatic voltage control system (AVC) problems and defects in the actual operation of the power system, a modified control strategy and parameter setting related programs, and to track and analyze the running effect of the improved system control can make the AVC system more reasonable and effective, so as to improve the operation efficiency, reduce theory intensity of power regulation, guarantee the actual effect of safe and stable operation of the grid. At the same time, this paper takes Yu-hang district electric power system in Hangzhou city of Zhejiang Province as an example, analysis of the actual effect of improvement measures and schemes of the AVC control system, to further verify the theory and method of practical significance.