Multi-target coordinated operation optimization method of wind and photovoltaic storage electricity generation units

Abstract

The invention discloses a multi-target coordinated operation optimization method of wind and photovoltaic storage electricity generation units and relates to the technical field of wind and solar storage electricity generation control. The method comprises the steps of determining output power models of the electricity generation units, wherein the output power models comprise the output power models of wind driven generators, the output power models of photovoltaic generators and the output power models of energy storage batteries; building multi-objective functions of the wind and photovoltaic storage electricity generation units, wherein the multi-objective functions comprise the electricity-generation-unit total-cost minimum objective functions and the renewable-energy-source loss-ratio minimum objective functions; setting constraint conditions of the multi-objective functions, wherein the constraint conditions comprise the power balance constraint conditions, the generator output constraint conditions and the energy-storage-battery capacity constraint conditions; solving the multi-objective functions through an improved multi-target universal gravitation search algorithm to obtain an active output value of each period of each electricity generation unit. On the basis that renewable energy sources are fully used, the longest service life of each storage battery is achieved, and therefore overall operating efficiency of the wind and photovoltaic storage electricity generation units is improved.

Description

technical field [0001] The invention belongs to the technical field of wind-solar-storage power generation control technology, and in particular relates to a multi-objective coordinated operation optimization method for a wind-solar-storage power generation unit. Background technique [0002] With the development of energy storage technology, random and intermittent renewable clean energy has been widely used, and large-scale wind-storage-storage combination as a power generation unit for centralized power supply has become one of the important hot issues in the development of renewable energy. The country has also successively established demonstration projects across the country, aiming to prove the ability of energy storage technology to improve the controllability of intermittent power sources through practice, and to explore effective ways to increase the acceptance of renewable energy in the grid. For the completed wind-solar-storage-generation unit, the establishment ...

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Problems solved by technology

[0005] The purpose of the present invention is to address the problems of lack of operation strategies, poor reliability, and low economic benefits of large-scale wind-solar-storage power generation units, by adopting an improved multi-objective gravitational search algorithm, formulating a multi-objective coordinated operation optimization strategy, and realizing the control of wind-solar-storage power generation units optimal control of

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