Power supply optimal configuration method for sea island type micro-grid

Abstract

The invention discloses a power supply optimal configuration method for a sea island type micro-grid. Firstly, each referred power supply in the micro-grid serves as a particle, referred power supplies of various types in the number xi serve as a group of particles, and a particle swarm is established; construction cost at the beginning of a planning period, the electric quantity Eti generated within the planning period, generated fuel cost Oti and operating maintenance cost Mti of each group of particles are obtained; secondly, whether the construction cost, the electric quantity Eti, the fuel cost Oti and the operating maintenance cost Mti meet set constraint conditions or not is judged, and if the construction cost, the electric quantity Eti, the fuel cost Oti and the operating maintenance cost Mti meet the set constraint conditions, fitness of the particle swarm is calculated through a current objective function; if the construction cost, the electric quantity Eti, the fuel cost Oti and the operating maintenance cost Mti do not meet the set constraint conditions, the fitness of the current particle swarm is adjusted by the adoption of a penalty function, and the optimal particle group is picked out according to calculation of the fitness of the particle swarm; after the optimal particle group is picked out, the optimal solution is outputted until set iterations are achieved, and thus power supply optimal configuration of the sea island type micro-grid is obtained. An algorithm of the particle swarm is adopted to solve most preferably power supply optimal configuration capacity, so investment cost of the micro-grid within a full life cycle is reduced, and stability of the micro-grid is improved.

Description

technical field [0001] The invention relates to a method for optimizing power supply configuration, in particular to a method for optimally configuring power supply for sea-island microgrids. The invention belongs to the technical field of microgrid configuration. Background technique [0002] With the growth of the world economy and its dependence on fossil energy, the carbon emissions produced by the use of fossil energy have also increased significantly, and the resulting global warming has become the focus of attention of countries all over the world. Compared with the traditional power generation technology that relies on fossil energy, the use of renewable new energy to form a distributed power supply DG can minimize environmental pollution and carbon emission costs. However, distributed power generation DG is usually "uncontrollable" and "unsuitable for control", and the existing power grid technology still cannot fully meet the access requirements of distributed pow...

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Problems solved by technology

However, distributed power generation DG is usually "uncontrollable" and "unsuitable for control", and the exi

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