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A modeling method and system for evaluating aggregation frequency modulation performance of a distributed energy storage system

A distributed energy storage and performance technology, applied in the direction of AC network circuits, circuit devices, AC network load balancing, etc., can solve the problems of auxiliary service providers, supply methods, transaction rules, fee standards, payment and settlement methods, etc. Absence of market price mechanism, difficulty in distinguishing differences in the quality of ancillary services, etc.

Active Publication Date: 2019-01-11
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

At present, my country's electricity market is still in its infancy. Although some provinces are optimizing and promoting ancillary services based on the "two detailed rules", their market price mechanism is still absent. Ancillary service providers, supply methods, transaction rules, fee standards, payment and The settlement method has not yet been perfected, so it is difficult to take into account the difference in the cost of ancillary services provided by different power plants, and it is also difficult to distinguish the difference in the quality of ancillary services

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  • A modeling method and system for evaluating aggregation frequency modulation performance of a distributed energy storage system
  • A modeling method and system for evaluating aggregation frequency modulation performance of a distributed energy storage system
  • A modeling method and system for evaluating aggregation frequency modulation performance of a distributed energy storage system

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[0091] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of this thorough and complete disclosure 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 intended to limit the invention. In the drawings, the same elements / elements are given the same reference numerals.

[0092] Unless otherwise defined, terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is to be understood that terms defined in commonly used dictionaries should be construed as having meanings consistent with the context in the related art, and should not be construed as idealized or overly formal...

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Abstract

The present invention provides a modeling method and system for evaluating aggregation frequency modulation performance of a distributed energy storage system. A method and system can be implement bydetermining a power grid aggregation target, and calculating the response factor of each distributed energy storage unit of the distributed energy storage system to the power grid aggregation frequency modulation, combining with the preset constraints of distributed energy storage system and power grid, adopting particle swarm optimization (PSO) to optimize the pre-established objective function of power system, determining the optimal aggregation frequency modulation scheme of distributed energy storage system, and then performing simulation analysis on the economy of the grid before and after the access of distributed energy storage system according to the preset model on the simulation model,so as to evaluate the frequency modulation performance of distributed energy storage system after the access of distributed energy storage system to grid. By optimizing the output of the distributed energy storage system, the method and the system realize the timely treatment of the frequency problems existing in the power grid, prevent the occurrence of large-scale cascading failures, and give full play to the application potential of the distributed energy storage system.

Description

technical field [0001] The present invention relates to the technical field of distributed energy storage, and more particularly, to a modeling method and system for evaluating aggregate frequency regulation performance of a distributed energy storage system. Background technique [0002] Compared with centralized energy storage, distributed energy storage has the advantages of small investment, flexible application, and low in-station losses. However, distributed energy storage also has problems such as scattered output, poor controllability, and lack of corresponding dispatching methods. At present, most of the research on energy storage frequency regulation focuses on large-scale centralized energy storage frequency regulation. For distributed energy storage devices, there is no complete and mature frequency regulation aggregation strategy. Distributed energy storage is fully capable of frequency regulation, and it is imminent to establish an efficient and accurate freque...

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Application Information

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IPC IPC(8): H02J3/32
CPCH02J3/32H02J2203/20
Inventor 李相俊张天庆李文启惠东邱武斌贾学翠杨海晶宋宁希高东学
Owner CHINA ELECTRIC POWER RES INST
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