Power grid reactive power optimization method considering reactive power compensation cost of distributed power supply

Abstract

The invention belongs to the technical field of power grid operation and distribution, in particular to a power grid reactive power optimization method considering a reactive power compensation cost of a distributed power supply. The power grid reactive power optimization method comprises the steps of: analyzing a reactive power service cost of the distributed power supply, collecting technical parameters of the distributed power supply, and establishing a distributed power supply reactive power service cost model; considering a node voltage constraint condition and an adjustable transformer transformation ratio constraint condition, and establishing a power grid multi-target reactive power optimization model taking minimum operation cost and minimum voltage deviation as objective functions while taking economical efficiency and safety into account; and solving the reactive power optimization model by adopting a non-dominated ranking genetic algorithm, and solving the optimal reactive power output of the distributed power supply in an optimal solution set by adopting a TOPSIS method. The power grid reactive power optimization method makes economic compensation for reactive power service of the distributed power supply, increases the income of operators while making a reactive power optimization scheduling method of the power grid more flexible, greatly reduces active grid loss and the voltage deviation of the power grid, and is conductive to increasing the economical efficiency and safety of power grid operation.

Description

technical field [0001] The invention belongs to the technical field of power grid operation and distribution, and in particular relates to a reactive power optimization method for a power grid considering reactive power compensation costs of distributed power sources. Background technique [0002] With the rapid development of distributed power, distributed power has become an indispensable role in power grid dispatching. Under the traditional power industry structure model, power generators and power grid companies have common economic interest goals, so the goal of minimizing network loss in the traditional reactive power optimization model can meet their common interest requirements, thus making the traditional reactive power optimization model realistic. feasibility. However, under the smart grid framework, after the formation of the power market mechanism, distributed power operators and power grid companies that can provide reactive power auxiliary services belong to ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the current power grid reactive power optimization method cannot take into account both economy and safety, the present invention proposes a power grid reactive power optimization method that considers the reactive power compensation cost of distributed power sources, including the following steps:

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