Configuration method of bundled reactive power compensation capacity in 220kv substation

Abstract

The invention discloses a 220 kV transformer station binding type reactive compensation capacity configuration method, comprising selecting f 220 kV transformer stations which are communicated through 220 kV circuits to bind the transformer stations to a target group, determining boundary groups, a target circuit, boundary circuits, and boundary points, acquiring parameters of a main transformer and circuit models; then, predicting active power sent by a target group main transformer, power factors, and reactive flow direction factors under a large method and a small method, and active power transmitted by a target circuit, active power transmitted by the boundary circuits, power factors on the boundary points, and transmitted reactive flow direction factors; then, calculating total reactive load of the target group, and reactive power of the boundary circuits flowing from the boundary points to the target group; and finally, calculating inductive and capacitive reactive compensation total capacity of the target group, and according to a power transformation capacity equipartition principle, performing configuration. The method is suitable to be used for reactive compensation planning of 220 kV transformer stations, and is beneficial for balance near reactive layering and divided sections and preventing blindness of reactive configuration.

Description

technical field [0001] The invention relates to reactive power compensation planning of a substation, in particular to a capacitive and inductive reactive power compensation capacity configuration method of a 220kV substation. Background technique [0002] The voltage quality and reactive power management standards of my country's Southern Power Grid require that the reactive power configuration of the power system should be able to ensure the reactive power balance of the stratified and partitioned systems under the operating mode of active load peak and load trough. [0003] The capacitive reactive power compensation of the 220kV substation is mainly to compensate the reactive power loss of the main transformer, and appropriately compensate the reactive power loss of some lines. The compensation capacity is configured according to 10% to 30% of the main transformer capacity, and when the maximum load of the 220kV main transformer is met, the power factor of the high-voltag...

AI Technical Summary

Problems solved by technology

[0004] Configuring reactive power compensation according to this principle has the advantages of simplicity, convenience, and strong operability. However, this principle does not make a more optimal configuration according to the reactive power balance requirements of the grid with different reactive voltage characteristics, resulting in overcompensation in some substations, and overcompensation in some substations. Substation undercompensation problem

Images