Planning method and system for optimizing micro-grid containing distributed power sources and stored energy

Abstract

The invention discloses a planning method and system for optimizing a micro-grid containing distributed power sources and stored energy, wherein the planning method and system are based on an intelligent optimization algorithm. The planning method is used for optimizing the micro-grid containing the distributed power sources and the stored energy, and comprises the steps that basic data are provided for a planning and design scheme, and modeling and load flow calculation are performed on an area to be planned; a micro-grid wiring mode suitable for the area to be planned is determined; site locations, to be chosen, of the multi-type distributed power sources are determined; a site distribution and capacity determining model is established, and a grid frame of the micro-grid containing the distributed power sources and the stored energy is planned and designed; a joint planning scheme and a joint planning module under a decided investment subject are formed; the joint planning scheme is output and evaluated. According to the planning method and system for optimizing the micro-grid containing the distributed power sources and the stored energy, on the basis of basic characteristic study of the distributed power sources and the micro-grid, planning for optimizing the micro-grid containing the photovoltaic power sources is systematically studied, the positions, capacities and the grid frame structures of all kinds of distributed power sources in the micro-grid in the specified planning area are reasonably allocated, and the micro-grid optimization planning scheme which is complete, effective and high in integrity, and is closely integrated with engineering practice is established.

Description

technical field [0001] The invention relates to the technical field of micro-grid optimization planning, in particular to a micro-grid optimization planning method and system based on an intelligent optimization algorithm including distributed power sources and energy storage. Background technique [0002] With the rapid growth of power system load demand, large-scale centralized power generation and ultra-high voltage long-distance transmission have gradually become the main methods of electric energy production, transmission and distribution. Large-scale power systems have high investment costs and difficult operation, and the power supply of large power grids cannot flexibly track load changes, and local accidents are prone to deterioration. Therefore, distributed generation and microgrid technology are getting more and more attention. In order to reduce the impact of distributed generation (DG) access on the distribution network and allow more DG access, as a good solut...

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Problems solved by technology

The traditional planning of the above-mentioned literature analyzes the distributed power generation site selection, fixed capacity and self-grid planning of the microgrid as independent decoupling problems, but the research on how to form the overall planning method from the initial plot to the grid construction Less, it is difficult to meet the planning requirements of microgrid construction

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