Control method for reactive compensation of network

Abstract

The invention provides a control method for reactive compensation of a network, which comprises the steps of: connecting and collecting passive demand information of an adjacent transformer substation through the network; if the network is disconnected, controlling the switching on or off of a capacitor according to the passive demand of the transformer substation; and if the network is connected, before each switching on or off, sending data to the adjacent transformer substation, and receiving the data of the adjacent transformer substation, and controlling the switching on or off of the capacitor according to the reactive demands of the transformer substation and the adjacent transformer substation to ensure that only one transformer substation switching capacitor exists each time.

Description

technical field [0001] The invention relates to a control method for reactive power compensation, in particular to a control method for network reactive power compensation. Background technique [0002] Most of the electrical loads in the grid, such as motors and transformers, are inductive loads, and corresponding reactive power must be provided to these devices during operation. [0003] After installing reactive power compensation equipment such as shunt capacitors in the grid, it can provide reactive power consumed by inductive reactance, reducing the reactive power provided by the grid power supply to the inductive load and transported by the line, due to the reduction of reactive power in the grid Therefore, it can reduce the power loss caused by the transmission of reactive power in lines and transformers, which is reactive power compensation. Reactive power compensation can improve the power factor, which is a loss reduction and energy saving measure with less inves...

AI Technical Summary

Problems solved by technology

[0009] The network control method can better meet the requirements of the current reactive power compensation control, but it has high requirements for the central control system and is highly dependent on the communication network. Once the communication network is blocked, the system will not be able to operate normally. is not common

[0010] When using the VQC control method or single-station control method, when the reactive power demand of several or all substations on a 110kV line cannot meet the conditions for the capacitor input of the station, the upper-level substation (330kV station) must pass The transmission line supplies the reactive power gap, which increases the power loss of the transmission line and affects the economic operation of the entire system