无功发生源抑制次同步振荡的机理分析

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Abstract The mechanism of static var source depressing power system subsynchronous oscillations(SSO) is analyzed detailedly, and then the mathmatical expression of supplementary electrical damping along with its influencing factors are put forward. A multiple mass-lumped model of a generating unit and its decoupled equations of motion are established too. Furthermore, the effectiveness of static var source connected to the network to improve subsynchronous oscillation damping characteristics is testified analytically. Finally, the electromagnetic transient model of single machine power system including a fixed series compenstion capacitor is established by real-time digital simulator (RTDS). The simulation results show that it is effective for static var source to depress the subsynchronous oscillations of the generator.

Key words： Subsynchronous oscillations(SSO) complex coefficient torque approach fixed series compensation capacitor RTDS

Received: 12 June 2009 Published: 07 March 2014

PACS:

TM712

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	Li Wei
	Xiao Xiangning
	Zhao Yang

Cite this article:

Li Wei,Xiao Xiangning,Zhao Yang. Mechanism Analysis of Static Var Source Depressing Subsynchronous Oscillations[J]. Transactions of China Electrotechnical Society, 2011, 26(4): 168-174.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I4/168

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