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Optimal capacity estimation method and system for energy storage in field of frequency modulation of power system

A power system, energy storage technology, used in circuit devices, AC network circuits, reducing/preventing power oscillations, etc.

Active Publication Date: 2018-11-02
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology

[0017] The technical solution of the present invention provides a method and system for evaluating the optimal capacity of energy storage in the field of power system frequency regulation to solve the problem of how to evaluate the optimal capacity of energy storage in the field of power system frequency regulation

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  • Optimal capacity estimation method and system for energy storage in field of frequency modulation of power system

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[0150] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings are not limiting to the present invention. In the figures, the same units / elements are given the same reference numerals.

[0151] Unless otherwise stated, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that the terms defined by commonly used dictionaries should be understood as having consistent meanings in the context of their related fields, and should not be understood as idealiz...

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Abstract

The invention discloses an optimal capacity estimation method for energy storage in the field of frequency modulation of a power system. The method comprises the steps of building an energy storage output power module, and determining adjustable capacity of energy storage according to the energy storage output power module; building an output power model of a conventional machine set, and determining adjustable capacity of the conventional machine set according to the output power model of the conventional machine set; building frequency modulation dispatching strategy model, and adjusting capacity of energy storage or the conventional machine set according to frequency modulation capacity required by the power system and the adjustable capacity of energy storage or the adjustable capacityof the conventional machine set; building a frequency modulation compensation rule module, and determining compensation amount of energy storage or the conventional machine set according to the frequency modulation compensation rule model; setting a capacity ratio of energy storage; building a frequency modulation time sequence simulation model, building a simulation algorithm input database, andperforming frequency modulation time sequence simulation according to the capacity ratio of energy storage; and calculating total frequency modulation compensation fee of all conventional machine sets and energy storage within a typical frequency modulation day according to data within a certain time.

Description

technical field [0001] The present invention relates to the technical field of power system frequency regulation, and more specifically, to a method and system for evaluating the optimal capacity of energy storage in the field of power system frequency regulation. Background technique [0002] As the proportion of wind power, solar power and other intermittent performance in the power grid is gradually increasing, the frequency regulation of the power system is facing more and more severe challenges. In the power system that mainly relies on thermal power units to provide frequency regulation services, new electric energy storage technologies are gradually Enter. Electric energy storage provides frequency modulation services, and the optimal allocation capacity in the power system is an important issue that needs to be considered by the power system. Intermittent energy refers to discontinuously generated energy such as solar energy and wind energy. The randomness and uncer...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24
CPCH02J3/24H02J2203/20
Inventor 杨水丽王金浩常潇雷达肖莹朱燕芳王澍王琤马会萌李相俊
Owner CHINA ELECTRIC POWER RES INST
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