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Aggregation control method of energy storage system to stabilize total output power fluctuation of multiple wind farms

An energy storage system and output fluctuation technology, applied in wind power generation, reducing/preventing power oscillation, energy storage, etc., can solve problems such as increasing the burden of energy storage system regulation

Active Publication Date: 2015-09-23
NORTHEAST DIANLI UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the difference in spatial distribution of wind farms leads to different characteristics of output power fluctuations, and the output power fluctuations of wind farms are complementary to each other, that is, the output fluctuations of the wind farms tend to be gentle after the convergence of wind farms. Compared with the fluctuation of the output power of the farm group, the decentralized and smooth output fluctuation of each wind farm will increase the regulation burden of the energy storage system

Method used

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  • Aggregation control method of energy storage system to stabilize total output power fluctuation of multiple wind farms
  • Aggregation control method of energy storage system to stabilize total output power fluctuation of multiple wind farms
  • Aggregation control method of energy storage system to stabilize total output power fluctuation of multiple wind farms

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Embodiment Construction

[0029] The present invention will be further described below using the accompanying drawings and examples.

[0030] Take the output fluctuation of the wind farm group as the smoothing object to coordinate and control each energy storage system,

[0031] 1) Calculation of the reference power of the i-th wind farm

[0032] The reference power P of the i-th wind farm ref.i (t) for

[0033] P ref . i ( t ) = 1 T c ∫ t 0 - T c t 0 P wind . i ( t ) dt - ...

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Abstract

The invention discloses an energy storage system aggregation control method for stabilizing the fluctuation of main output power of various wind power stations. The method is characterized by including calculation of reference power of the wind power station i, calculation of reference output power Pref. sigma (t) of a wind power station group and calculation of main reference charge-discharge power of energy storage systems. Output fluctuation of the wind power station group serves as a stabilizing object, all the energy storage systems are controlled in a coordinated mode, mutual offset of charge energy and discharge energy when the energy storage systems disperse and stabilize the output fluctuation of the wind power stations is avoided, stabilization of the output fluctuation of the wind power station group is finished at the smallest cost, and the economy of operation of the energy storage systems is improved.

Description

technical field [0001] The invention relates to the technical field of wind farms, and relates to an aggregation control method of an energy storage system for smoothing fluctuations in the total output of multiple wind farms. Background technique [0002] Due to the randomness, intermittentness and unpredictability of wind energy, the wind power fluctuations caused by large-scale wind power grid integration have caused many adverse effects on the economic operation of the grid, and even threatened the safety of grid operation, which limits the scale of wind power grid integration and restricts Large-scale development and utilization of wind energy. [0003] Large-scale energy storage technology is considered to be an effective means to stabilize wind power fluctuations and improve the wind power acceptance capacity of the grid because it can realize the time-space translation of electric energy. The output of wind farms is controlled in a decentralized manner. However, th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/28H02J3/24
CPCY02E10/76Y02E70/30
Inventor 严干贵穆钢李军徽朱星旭
Owner NORTHEAST DIANLI UNIVERSITY