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	Mechanism study on the mitigation of SSR with SVC
	Xie Xiaorong ; Yang Tingzhi ; Jiang Qirong ; Lin Jingtao ; Wu Yunsheng
	2010-10-12 ; 2010-10-12
关键词	Practical/ machine control static VAr compensators turbogenerators/ mechanism study depressing subsynchronous resonance static var compensator turbine-generator shaft mathematical model subsynchronous modulation fundamental admittance supersynchronous fractional harmonic currents nonlinear electromagnetic simulations power-electronic circuit Jinjie series-compensated transmission project/ B8390 Other power apparatus and electric machines B8110B Power system management, operation and economics B8310 a.c. machines C3340H Control of electric power systems
中文摘要	The core issue of depressing subsynchronous resonance (SSR) with static var compensator (SVC) is to make its current output contain components of complementary frequencies to torsional modes of the turbine-generator shaft. For this purpose, the control principle and mathematical model of subsynchronous modulation of fundamental admittance for SVC are proposed. Theoretical analysis shows that by subsynchronously modulating the reference value of SVC's fundamental admittance with appropriate amplitude and phase, the generated current components of the complementary frequencies can be controlled to generate damping torque and realize the SSR-damping objective. The proposed control scheme meanwhile results in supersynchronous as well as other fractional harmonic currents. Both nonlinear electromagnetic simulations with the detailed power-electronic circuit and field tests on the actual SVC equipment validate the proposed control scheme and mathematical model. The subsynchronous damping control system is further applied to a practical system threatened by SSR, i. e., the Jinjie series-compensated transmission project. Extensive digital simulations have demonstrated its effectiveness in mitigating multimodal SSR.
语种	中文
出版者	State Power Corporation of China ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82472]
专题	清华大学
推荐引用方式 GB/T 7714	Xie Xiaorong,Yang Tingzhi,Jiang Qirong,et al. Mechanism study on the mitigation of SSR with SVC[J],2010, 2010.
APA	Xie Xiaorong,Yang Tingzhi,Jiang Qirong,Lin Jingtao,&Wu Yunsheng.(2010).Mechanism study on the mitigation of SSR with SVC..
MLA	Xie Xiaorong,et al."Mechanism study on the mitigation of SSR with SVC".(2010).

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