Active distribution network voltage coordinated control method based on cell membrane optimization

Abstract

Disclosed is an active distribution network voltage coordinated control method based on cell membrane optimization. The coordinated control method comprises the following steps of performing power flow calculation of a distribution network system by a forward-backward sweep method; obtaining the upper and lower limiting values of a distributed generation and a reactive power compensation device; selecting access points for the distributed generation and reactive power compensation device; performing material type division; performing free diffusion of the high concentration lipid soluble substances; performing movement of high concentration non-lipid soluble substances; performing movement of low concentration substances; performing the current optimal substance circulation movement; and performing substance updating. The active distribution network voltage coordinated control method has the characteristics of high global convergence, relatively fast convergence speed and high precision by using the cell membrane optimization algorithm, and the power distribution network voltage is improved by virtue of coordinated control of the distributed generation and reactive power compensation device.

Description

technical field [0001] The invention relates to an active distribution network voltage coordination control method based on cell membrane optimization, which belongs to the distribution network voltage control technology. Background technique [0002] In recent years, with the ever-increasing power demand and increasingly serious environmental problems, the distributed generation technology dominated by clean energy has developed rapidly. The connection of distributed generation (DG) to the distribution network can effectively reduce line loss, improve power supply reliability, and greatly relieve system peak load pressure. However, as its penetration rate continues to increase, it will affect the distribution of power flow and voltage levels etc. have a huge impact. This has driven the international large power grid conference CIGRE (conseil International des Grands Réseaux Electriques) to propose the concept of active distribution network ADN (active distribution network)...

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Problems solved by technology

[0003] Active distribution network voltage control is the main research direction of active distribution network at present, but the relevant theoretical basis and technology are not yet mature.

Adjusting on-load transformers, changing reactive power compensation, controlling DG output, and flexible load scheduling in smart grids have mutual influences, and have different effects on voltage and network loss in different situations. Under single-objective optimization regulation, it may Worsening other indicators

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