汽轮发电机不同模型小扰动特性

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Abstract The practical models of turbine generator used in power system simulation are derived from Park equations by introducing different assumed conditions. The so-called assumed A practical model is obtained by postulating x_afx_D=x_aDx_fD in several literatures, while assumed B practical model is obtained by postulating x_ad=x_af=x_aD=x_fD. The B-1 practical model is obtained based on assumed B by further hypothesis. In order to analyse the accuracy of simulation results, the small-disturbance characteristics calculated by practical models are compared with time step finite element method(TSFEM). Firstly, the physical significance of different assumed condition is studied. The essential distinction of different assumed conditions is considering the mutual leakage flux linkage between exciting winding and damping winding or not; Then, take single machine infinite system for example, the small-disturbance characteristic calculated by different models are compared under the different damping structures. Finally, the small-disturbance characteristic calculated by assumed A is closed to T-S FEM through comparing small-disturbance characteristics index. The result provides reasonable reference to select practical model in power system simulation.

Key words： Turbine generator practical models time step finite element method small disturbance

Received: 13 April 2012 Published: 25 March 2014

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TM341

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	Articles by authors
	Xu Guorui
	Tang Yong
	Liu Xiaofang
	Wang Hongyu
	Kang Jinping
	Luo Yingli

Cite this article:

Xu Guorui,Tang Yong,Liu Xiaofang等. Small Disturbance Characteristics of the Different Turbine Generator Models[J]. Transactions of China Electrotechnical Society, 2013, 28(9): 302-309.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I9/302

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