风火捆绑经HVDC送电引起轴系扭振研究

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Abstract When the wind turbines and wind generators are two-mass or multi-mass shaft model, the control mode of power electronic equipment at rectifier may introduce negative damping to nearby generators, which could cause torsional vibration. This phenomenon is named sub-synchronous torsional interaction. The stability of wind power system may be improved when the wind power and thermal power bundle supply. However, the shaft system may cause torsional vibration when the system is disturbed. Firstly, this paper researched the mechanism of wind torsional vibration. Secondly, the system transfer function of every nature frequency of the shaft was identified base on total least square-estimation of signal parameters via rotational invariance techniques (TLS-ESPRIT). Finally, the controller was designed that aim at every nature frequency of the shaft base on projective theorem. This paper built the model of wind power and thermal power bundle supply through HVDC base on PSCAD/EMTDC. The simulation results show that supplementary subsynchronous damping controller (SSDC) can restrain sub-synchronous torsional interaction effectively, and the SSDC has the advantages of low order and facilitate project implementation.

Key words： High voltage direct current transmission wind shaft system model sub-synchronous torsional interaction projective theorem supplementary sub-synchronous damping controller

Received: 29 August 2016 Published: 29 March 2017

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TM712

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	Li Kuan
	Wang Jun
	Zhao Binchao
	Li Yudun
	Liu Meng

Cite this article:

Li Kuan,Wang Jun,Zhao Binchao等. Shafting Vibration Research of Wind Power and Thermal Power Bundle Supply Through HVDC[J]. Transactions of China Electrotechnical Society, 2017, 32(6): 115-122.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I6/115

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