Damping Characteristics Analysis Based on Complex Torque Coefficient Method in Sub-Synchronous Oscillations

Abstract:

Because of China's energy and load imbalance, large-scale long-distance power transmission becomes inevitable. Under this background , series compensation capacitor in the power system and HVDC developed rapidly, and the SSO (Sub-synchronous oscillations) caused by HVDC is becoming increasingly apparent. Fundamental reason of SSO lies in the sub-synchronous system negative damping characteristics, so it is necessary to analyze the system damping characteristics. The net system damping includes mechanical and electrical damping. Based on small-signal test method-complex torque coefficient method in the time-domain simulation , paper analyzed the system electrical damping and mechanical damping characteristics.

• Periodical: Advanced Materials Research (Volumes 971-973)
• Pages: 988-991
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.971-973.988
• Online since: June 2014
• Authors: Han Chen*, Chun Lin Guo
• Keywords: Complex Torque Coefficient Method, Signal Testing Method, SSO Damping Characteristics, Sub-Synchronous Oscillation (SSO)

References

[1] Shijie Cheng, Yijia Cao and Quanyuan Jiang: The Method and damping method of power system sub-synchronous oscillation. Science Press.

DOI: 10.1109/icpst.2002.1053598

[2] Zheng Xu, Ruiqun Luo, and Ruijin Zhu : Review On method of analysis for sub-synchronous oscillationsof power systems, Zhejiang University, Power System Technology Vol . 23(6) , ( 1999), pp.36-39.

[3] Yixin Ni, Shousun Chen and Baolin Sun: Theory and analysis of dynamic power system[M]. Beijing, Tsing-hua University Press, (2002).

[4] Canay I M. A novel approach to the torsional interaction and electrical damping of the synchronous machine, Part I: Theory, Part II: Application to an arbitary network. IEEE Transaction on Power Apparatus and Systems, 1982, 101(10).

DOI: 10.1109/tpas.1982.317049

[5] Zheng Xu, The Complex Torque Coefficient Approach's Applicability Analysis and Its Realization by Time Domain Simulation[M]. Proceedings of the CSEE , Vol20(6), (2000).

[6] Changchun Zhou: Study of SSO damping in the HVDC power system, Hang Zhou, ZhejiangUniversity, 2004.

[7] Fan Zhang and Zheng Xu: A method to design a sub-synchronous damping controller for `HVDC transmission system[J] Power System Technology , Vol : 32(11).

[8] Xiangning Xiao, Chunlin Guo, Benfeng Gao and Yang Lin . The power system sub-synchronous oscillation and the damping method Machinery Industry Press , Vol : 32（11).

[9] Wanjun Zhao : HVDC engineering technology, China Electric Power Press.

[10] Xuesheng Li : Modeling and Simulation of PSCAD China Electric Power Press.

[11] Lingyun Wu, Xingyuan Li, Yu Yang, Chao Hong, Haiyang Liu and Fu We: Design of optional supplementary sub-synchronous damping controller based on prony method[J]. Electric Power Automation Equipment. Vol 27(9), (2007).