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Energy storage auxiliary frequency modulation scheduling method based on cloud energy storage

A technology that assists frequency regulation and scheduling methods. It is applied in the direction of AC network load balancing, reducing/preventing power oscillation, and AC network circuits. Effect

Active Publication Date: 2020-10-30
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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Problems solved by technology

my country has now put into operation a number of power-side energy storage and frequency modulation projects. With the gradual improvement of power-side frequency modulation performance, the North China Energy Regulatory Bureau has set the frequency modulation declaration price as 0-12 yuan / MW without a bottom line, and energy storage is becoming more and more difficult. profit

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  • Energy storage auxiliary frequency modulation scheduling method based on cloud energy storage
  • Energy storage auxiliary frequency modulation scheduling method based on cloud energy storage
  • Energy storage auxiliary frequency modulation scheduling method based on cloud energy storage

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Embodiment Construction

[0051] It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict.

[0052] In the description of this application, it should be understood that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer" etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and The description is simplified, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the protection scope of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and can...

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Abstract

The invention relates to an energy storage auxiliary frequency modulation scheduling method based on cloud energy storage. The method comprises the following steps: step 10, proposing an AGC frequencymodulation power distribution strategy of an energy storage power station and cloud energy storage; step 20, establishing an objective function with the minimum cost of participation of power grid energy storage in AGC frequency modulation; and step 30, determining constraint conditions of energy storage auxiliary frequency modulation based on cloud energy storage. The method has the beneficial effects that firstly, AGC frequency modulation power distribution strategies of an energy storage power station and cloud energy storage are proposed, a frequency modulation scheme with the lowest costis found; and finally, constraint conditions of cloud energy storage and energy storage power stations are determined, and the problems of difficult energy storage auxiliary frequency modulation profit and long service life of an energy storage battery are solved. An energy storage auxiliary frequency modulation scheduling strategy based on cloud energy storage is provided, that is, a cloud energy storage provider and an energy storage power station jointly undertake an AGC frequency modulation task of a power system, frequency modulation service is completed at lower cost, the frequency modulation cost of the power system can be reduced, the utilization rate of resources is improved, and meanwhile, the service life of an energy storage battery is also prolonged.

Description

Technical field [0001] This application belongs to the field of energy storage auxiliary frequency modulation, and in particular relates to an energy storage auxiliary frequency modulation scheduling method based on cloud energy storage. Background technique [0002] With large-scale wind power and photovoltaic power grids with intermittent and fluctuating output characteristics. The power grid's demand for rapid adjustment services has increased significantly. If only relying on the frequency modulation of the thermal power unit, it will increase the wear of the unit, reduce the service life of the generator set, and its response speed is slow and the adjustment accuracy is limited. [0003] Energy storage has the characteristics of fast, accurate, and large instantaneous throughput. With the development of energy storage technology, its cost has dropped significantly, and it has gradually become a high-quality frequency modulation resource in the automatic generation control (AG...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/32
CPCH02J3/241H02J3/32
Inventor 杨海晶李朝晖饶宇飞孙鑫马瑞滕卫军任浩谷青发徐鹏煜王建波
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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