Reactive power optimization method for regional power grid

Abstract

The invention discloses a reactive power optimization method for a regional power grid, and the method comprises the following steps: 1, layering and dividing power grids and transformer stations of all regions; 2, employing an improved genetic algorithm to obtain the following target functions, employing the genetic algorithm to obtain the solutions of the target functions, and enabling the overall transmission losses of the power grids to be minimum; 3, dividing the peaks and valleys of power utilization according to the local conditions of power utilization; and 4, dividing the use priority of control equipment according to the specific peak and valley conditions obtained at the step 3. According to the invention, the target function is obtained through the improved genetic algorithm, and the minimum value is obtained, thereby effectively enabling the overall transmission losses of the power grids to be minimum. Moreover, the method is simple in calculation, and can avoid a condition that the reactive power in the power grid is reduced or excessive more effectively through the dividing of the peaks and valleys and the limiting of the priority of control equipment.

Description

technical field [0001] The invention relates to a smart grid, and more specifically relates to a reactive power optimization method for a regional power grid. Background technique [0002] The power transmitted in the grid consists of two parts: active power and reactive power. Reactive power cannot do useful work, but it is indispensable in electromagnetic exchange and causes losses at the same time. Insufficiency and excess of reactive power have a significant impact on voltage quality and power loss. In my country's current power grid, inductive nonlinear loads such as motors [1] occupy a considerable proportion, and these loads need to absorb a large amount of reactive power. The distribution of energy and load centers is uneven, and the common phenomenon of long-distance transmission of reactive power is common. If the reactive power cannot be compensated locally, it will cause additional power loss in the grid and a large voltage drop at both ends of the line, resul...

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the existing technology, the purpose of the present invention is to provide a reactive power optimization method for regional power grids that is more convenient to calculate, less prone to lack of reactive power and excess reactive power, and minimizes overall network loss costs

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