Intelligent voltage regulation method for high-permeability distributed energy systems based on cluster division

Abstract

The present invention is aimed at the existing high-permeability large-scale distributed energy system, which is still in the exploratory stage in terms of cluster division basis, division method, and voltage regulation strategy, and it is not convenient to carry out subsequent voltage regulation for high-permeability large-scale distributed energy systems. , providing an intelligent voltage regulation method for high-permeability distributed energy systems based on cluster division. The method includes: using the K-means algorithm to divide the nodes in the power system into n sub-communities, using the controllable PV node reactive power and active power as adjustable variables, and performing power flow calculations in the sub-communities; preset In the non-linear adjustment cycle, the hybrid particle swarm optimization algorithm is used to roughly adjust the PV node voltage, and the operating point Γ is determined; according to the determined operating point Γ, the PV node voltage is finely adjusted using the linearization equation of the node voltage. The invention can effectively solve the overvoltage problem of high-permeability renewable energy, and has good real-time performance.

Description

technical field [0001] The invention relates to the technical field related to power system operation optimization, in particular to an intelligent voltage regulation method for a high-permeability distributed energy system based on cluster division. Background technique [0002] The cluster system formed by the grid connection of new energy sources such as wind power and photovoltaics has the characteristics of multi-capacity, high density, and large-scale, and can be divided into regional decentralized / centralized and different access forms. The large-scale access of distributed generation (DG) is prone to adverse effects such as voltage overrun, power reverse, and line overload, and will gradually transform the traditional radial distribution network into an active distribution network. Among them, the voltage limit is the most obvious problem, and the method of relying on the on-load voltage regulator of the substation and the local reactive power compensation needs to b...

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Problems solved by technology

[0005] The present invention is aimed at the existing high-permeability large-scale distributed energy system, which is still in the exploratory stage in terms of cluster division basis, division method, and voltage regulation strategy, and it is not convenient to carry out subsequent voltage regulation for high-permeability large-scale distributed energy systems. , providing an intelligent voltage regulation method for high-permeability distributed energy systems based on cluster division

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