基于调频层面的风电弃风分析

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Abstract Wind power curtailment has been one of the key restricting factors behind the development of the wind power industry.The main reasons for wind power curtailment are inadequate peak and frequency adjustment capability as well as inadequate transmission capacity.As seen from the aspect of the frequency adjustment,the active power output of the wind farm should be reduced step by step according to the command from the dispatch department of the power grid when the grid frequency exceeds the upper limit.To study urgent wind power curtailment at the minute-level,the most appropriate shedding method for wind generators is selected based on the frequency adjustment sensitivity index of wind generators’ tripping as lopsided power exists.Typical difficult time intervals of the frequency adjustment are chosen according to the relationship between frequency overshoot time and load variation.Combined with the above wind generator tripping strategies,annual wind power curtailment in the planning scheme at the frequency adjustment level is estimated.Based on DIgSILENT/PowerFactory software,a certain regional power network planning in China of 2020 is used to verify the correctness and validity of the proposed method.

Key words： Wind generator tripping strategy power grid frequency sensitivity analysis wind power curtailment

Received: 15 November 2014 Published: 25 May 2015

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	Articles by authors
	Tian Shuxin
	Cheng Haozhong
	Zeng Pingliang
	Liu Lu
	Wang Kan
	Ma Zhoujun

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Tian Shuxin,Cheng Haozhong,Zeng Pingliang等. Analysis on Wind Power Curtailment at Frequency Adjustment Level[J]. Transactions of China Electrotechnical Society, 2015, 30(7): 18-26.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I7/18

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