Research and design of the system reactive power automatically regulating device based on voltage control

Analyzes the principle, software, hardware design and application in power system of a kind of new reactive power automatically regulating device based on voltage control. This device aims at controlling output voltage to realize reactive power local balance by regulating the middle-voltage side voltage of 220KV substation while considering the high-voltage side voltage adjusting. Thus it decreases the reactive power flow in the network and drops down the power loss; meanwhile the quality of voltage is also improved. It can exchange information with the master station (dispatch center) to overall control and regulate the reactive power and voltage of the 220KV voltage level power network in order to optimize the reactive power flow in the primary network.