Comprehensive performance index-based high-permeability distributed power supply cluster division method

Abstract

The invention discloses a comprehensive performance index-based high-permeability distributed power supply cluster division method, and relates to the technical field of power distribution network planning and control of a renewable energy power supply. A cluster division index system and a cluster division effective algorithm are proposed; the cluster division index is defined as a comprehensiveperformance index; the comprehensive performance index comprises an electrical distance-based modularity index <rho>, a cluster reactive balance degree index formula which is as shown in the specification and a cluster active balance degree index formula which is as shown in the specification; for adapting the calculation expression of the comprehensive performance index system and the objective demand of cluster division, the cluster division effective algorithm performs distributed power supply cluster division based on a genetic algorithm; meanwhile, by improving the basic genetic algorithmand according to the network adjacent relation, a chromosome coding mode is designed; and adaptive crossed mutation probability is adopted. The comprehensive performance index-based high-permeabilitydistributed power supply cluster division method has the advantages as follows: complementarity between nodes and cluster capacity of self-government can be fully played, so that large-scale renewable energy consumption and control can be promoted.

Description

Technical field [0001] The invention relates to the technical field of distribution network planning and control of renewable energy power sources, and more specifically to a method for dividing a high-penetration distributed power source cluster based on a comprehensive performance index. Background technique [0002] The increasing demand for renewable energy and people's attention to environmental issues have promoted the rapid development of renewable energy power generation. Especially in the distribution network of remote areas, with the further strengthening of the national new energy poverty alleviation policy, a large number of distributed renewable energy sources have been connected to the power grid, and the penetration rate of more than 100% has appeared in some areas. Operation and control pose a huge challenge. The current common distributed renewable energy control methods mainly include microgrid mode, centralized control and cluster control mode. In the low-vol...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the existing cluster division method is based on a single index, and is divided for a certain process in the planning, operation and control of the system. Theoretical support and comprehensive performance indicators

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