Method for reversely sending passive limit value

Abstract

The invention relates to a method for reversely sending a passive limit value. The method comprises the following steps of determining a passive limit value reversely sent by each substation accordingto theory requirement of a power grid, setting an upper limit value and a lower limit value in a D5000 system, adding passive out-of-limit information reversely sent by the substation into a real-time integral and intelligent warning interface, and uploading out-of-limit information in a warning window when a certain station reversely sends the passive out-of-limit information so that a monitoring watcher finds out and takes manual adjustment within first time and the electric energy quality is improved. By the method, the passive limit value reversely sent by the substation is set, the passive out-of-limit information reversely sent by the substation is added into the real-time integral and intelligent warning interface of the system, a support is provided for the watcher to find out thecondition of reversely sending the passive power, and manual adjustment is facilitated.

Description

technical field [0001] The invention relates to a method for returning reactive power limit value. Background technique [0002] The principle of reactive power compensation is layered partitioning and local balance. With the continuous expansion of the grid scale in Hengshui area, the increase of new load points, new investment substations and expanded transformers, the distribution of reactive power in Hengshui area has changed. In the above situation, the AVC system strategy in D5000 is not perfect for the reactive power flow distribution algorithm of the grid network, and the reactive power compensation strategy is not suitable. ), the capacitor is at the input position, which causes the reactive power compensated by the load capacitor to return 110kV to the line through the transformer, and then return to the 220kV network through the main transformer of the 220kV substation, resulting in increased network loss and reduced power quality. Contents of the invention [...

AI Technical Summary

Problems solved by technology

[0002] The principle of reactive power compensation is layered partitioning and local balance. With the continuous expansion of the grid scale in Hengshui area, the increase of new load points, new investment substations and expanded transformers, the distribution of reactive power in Hengshui area has changed. In the above situation, the AVC system strategy in D5000 is not perfect for the reactive power flow distribution algorithm of the grid network, and the reactive power compensation strategy is not suitable. ), the capacitor is at the input position, which causes the reactive power compensated by the load capacitor to return 110kV to the line through the transformer, and then return to the 220kV network through the main transformer of the 220kV substation, resulting in an increase in network loss and a decline in power quality