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Method for improving wind power tracking capability on planned output by energy storage system

A technology for planned output and energy storage system, which is applied in wind power generation, energy storage, and reduction of greenhouse gases, etc., and can solve problems such as power grid scheduling deviation and affecting the stable operation of the power system

Active Publication Date: 2012-06-27
CHINA ELECTRIC POWER RES INST
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

In view of the fact that there are still large errors in the current forecasting technology, and the deviation of power grid dispatching due to the forecasting error will seriously affect the stable operation of the power system, the forecasting technology has not yet achieved large-scale popularization

Method used

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  • Method for improving wind power tracking capability on planned output by energy storage system
  • Method for improving wind power tracking capability on planned output by energy storage system
  • Method for improving wind power tracking capability on planned output by energy storage system

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0027] figure 1 It is the control structure diagram of the wind-storage joint application system tracking plan output.

[0028] Such as figure 1 As shown, the wind power real-time power P WG Collected by the data acquisition and supervisory control system (SCADA system), the wind power prediction power P FC Obtained by the relevant dispatching department, the wind power real-time power P WG and wind power forecast power P FC As the input of the DSP of the data acquisition and monitoring control system, calculate the real-time wind power P WG and wind power forecast power P FC The relative error γ between the two, according to the set relative error reference value re to judge whether the battery energy storage system is put into use, if the battery energy storage system is put into use, calculate the real-time wind power P WG and wind power forecast ...

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Abstract

The invention relates to a method for improving wind power tracking capability on planned output by an energy storage system. The method is characterized in that: charging and discharging of a cell energy storage system are effectively controlled, so that it is realized that wind storage combination output P out tracks wind power planned output in a designated and allowed error bandwidth. Comparison is carried out on a real-time wind power PWG and a currently planned target output power, namely a wind power prediction power PFC; if a difference value exceeds the allowed error bandwidth, the cell energy storage system is controlled to absorb or release a portion of power Pbess, so that an error between the wind power PWG and the prediction power PFC is reduced and tracking of wind storage combination output on the wind power planned output can be realized. Meanwhile, the method provided in the invention enables optimization control on a state of charge (SOC) of the cell energy storage system to be considered; and continuity and reliability of stable operation of a wind storage combination application system can be ensured by dividing SOC areas and reasonably dispatching charging and discharging electric quantities of the stored energy of the cell.

Description

technical field [0001] The invention relates to a combined grid-connected application technology of a battery energy storage system and wind power generation, in particular to a method for improving the output capacity of wind power tracking plan. Background technique [0002] Since the world energy crisis occurred in the 1970s, energy and environmental issues have become increasingly prominent. As a clean and renewable energy source, wind power has attracted more and more attention. Many countries regard the development of wind power as a means of improving energy structure. A measure to reduce environmental pollution and protect the ecological environment is incorporated into the national development plan. With the adjustment of my country's energy structure, the pollution-free and renewable wind power has been increasingly valued by the government, and relevant policies have been formulated to support the development of wind power. In 2011, the basic requirements for act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/28
CPCY02E10/763Y02E70/30Y02E10/766Y02E10/76
Inventor 李建林李蓓马会萌修晓青谢志佳惠东
Owner CHINA ELECTRIC POWER RES INST
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