High-voltage grid reactive compensation optimization configuration method

Abstract

The invention discloses a high-voltage grid reactive compensation optimization configuration method which is characterized in that an objective function of reactive power optimization configuration is to allow the whole network loss cost of a power distribution network to be minimum, the formula being shown in the specification, wherein, in the formula, Ke is energy loss cost coefficient, PLossi(xi) is active power network loss under load level i, and Ti is duration time under the load level i. The method allows investment of reactive compensation equipment to be the minimum, and compensation effect to be optimum, thereby realizing the effects of power grid reactive power balance, improving voltage qualified rate and reducing loss and saving energy.

Description

technical field [0001] The invention relates to reactive power compensation technology, in particular to a reactive power compensation optimization configuration method for a high-voltage power grid. Background technique [0002] The reactive power balance of the power grid is of great significance to both voltage and network loss. Excessive or insufficient reactive power will lead to an increase or decrease in voltage, affect the voltage quality, and lead to an increase in network loss. [0003] At present, there are many industrial and commercial loads in my country's urban power grids, and the distribution is very uneven. In many areas, the load density is high, resulting in low voltage during peak loads; , The operating voltage is low during peak load. Therefore, a certain number of compensation capacitors and reactors must be installed in the power grid to provide reactive power, improve voltage quality, and reduce network loss. [0004] However, the current reactive p...

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Problems solved by technology

[0006] For a long time, everyone has emphasized active power and neglected reactive power. In recent years, reactive power and voltage management has also emphasized voltage and despised reactive power. The reactive power compensation capacity provided cannot meet the needs of reactive power load and reactive power loss of the grid

[0007] 2. Unreasonable configuration of reactive power compensation

This method does not consider loss reduction and investment. This value can only compensate the reactive power loss of the transformer, but cannot compensate the reactive power loss of the upper transmission line of the transformer and the reactive power loss and reactive load of the first section of the distribution line.

In addition, this calculation method cannot consider the problem of adding or subtracting capacitors in old substations

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