A method and device for optimal allocation of energy storage capacity of an isolated microgrid
A technology for energy storage capacity and optimal configuration, applied to circuit devices, electrical components, AC network circuits, etc., can solve the problems that the calculation results cannot fit the actual situation, and the energy storage configuration results cannot be calculated comprehensively and accurately.
Active Publication Date: 2020-12-08
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology
[0004] The current optimal configuration method of hybrid energy storage in island-type microgrid cannot comprehensively and accurately calculate the configuration results of energy storage, making the calculation results unable to fit the actual situation
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Embodiment Construction
[0051] The embodiments of the present invention provide a method and device for optimizing the configuration of energy storage capacity of an isolated microgrid, which can make the calculation result closer to reality.
[0052] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0053] see figure 1 , an embodiment of a method for optimizing energy storage capacity configuration of an isolated m...
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Embodiments of the invention provide an isolated microgrid energy storage capacity optimization configuration method and apparatus. The method comprises the steps of setting power type energy storagerated power, energy type energy storage rated capacity and frequency breaking points into populations, and setting the total cost corresponding to individuals in the population into a fitness function; performing iterative operation through a genetic algorithm by combination with a power distribution strategy to obtain the optimal solution of energy storage capacity configuration, wherein the power distribution strategy comprises the steps of obtaining microgrid data, calculating vacancy power according to the microgrid data, determining a non-direct-current component in the vacancy power, andperforming breaking on the non-direct-current component to obtain a low-frequency component and a high-frequency component; and in a preset constraint condition, performing power balance on low-frequency component in the corresponding energy type energy storage in the individuals, performing power balance on high-frequency component in the power type energy storage, and performing power supplementation on the energy type energy storage and the power type energy storage of a diesel engine.
Description
technical field [0001] The invention relates to the field of power system planning, in particular to a method and device for optimizing the configuration of energy storage capacity of an isolated microgrid. Background technique [0002] With the surge in global energy demand, the increasing depletion of traditional energy sources such as fossil energy, and the increasingly prominent environmental pollution problems, the development of renewable energy is a major demand for China and the world. Renewable energy represented by wind energy and solar energy has developed rapidly. However, its indirectness and randomness bring huge difficulties to the planning and operation of the power system. How to effectively utilize renewable energy such as wind energy and solar energy while minimizing the impact on the power grid has become a big problem. Equipping a certain amount of energy storage in the power system can achieve the effect of shaving peaks and filling valleys and smooth...
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IPC IPC(8): H02J3/28H02J3/38
CPCH02J3/382H02J3/28H02J3/388
Inventor 钟国彬曾杰张弛王超白云洁谢开贵胡博
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID