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Analysis and Suppression Strategy of Sub-synchronous Oscillation for Wind-Thermal-Bundled Power Transmitted by Series-Compensated System

  • Asaah Philip
  • Yushuo Zhang
  • Lili HaoEmail author
  • Yantong Zhou
  • Wei Li
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 585)

Abstract

Large-capacity wind farms may increase the risk of torsional vibration of turbine generator shafts in the wind-thermal-bundled power transmitted by series-compensated system, therefore the analysis and suppression strategy of sub-synchronous oscillation (SSO) in such system needs to be thoroughly studied. In this paper, the mechanism of electromechanical torsional interaction and the influence of wind farm integration on system oscillation are analyzed. In order to suppress the SSO, the mechanism of electromagnetic torque increment produced by additional damping control of static synchronous compensator (STATCOM) is studies, based on which, a SSO damping controller is designed. Based on the complex torque coefficient approach and time domain simulation approach simulation cases are built in DIgSILENT/PowerFactory. The results show the impact of wind farm integration and series compensation degree on system damping and verify the suppression effect of STATCOM on system SSO.

Keywords

Wind-thermal-bundled system Sub-synchronous oscillation (SSO) Series compensation degree Electromechanical torsional interaction Additional damping control Static synchronous compensator (STATCOM) Complex torque coefficient approach 

Notes

Acknowledgements

The project was supported by State Key Laboratory of Smart Grid Protection and Control, and Six talent peaks project in Jiangsu Province (XNY-020).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Asaah Philip
    • 1
  • Yushuo Zhang
    • 1
  • Lili Hao
    • 1
    Email author
  • Yantong Zhou
    • 1
  • Wei Li
    • 2
  1. 1.Nanjing Tech UniversityNanjingChina
  2. 2.NARI Group Corporation, State Key Laboratory of Smart Grid Protection and ControlNanjingChina

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