Analysis of Subsynchronous Resonance Characteristics and Influence Factors in a Series Compensated Transmission System

Chengbing He, Dakang Sun, Lei Song and Li Ma
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Chengbing He: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Dakang Sun: Information Technology Department, Guodian Nanjing Automation Corporation, Nanjing 210000, China
Lei Song: Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 102206, China
Li Ma: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Energies, 2019, vol. 12, issue 17, 1-13

Abstract: Series capacitor compensation is used to improve the utilization of existing power systems. Subsynchronous resonance (SSR) can be caused by series compensated lines, which would lead to turbogenerator shaft breakdown. A novel approach was presented in this paper to analyze the characteristics and influence factors of SSR in a series compensated transmission system. The system model of SSR, including the various modules of the electromechanical network, was established, and the eigenvalue results under 70% series compensation level were analyzed by eigenvalue analysis method for the the institute of electrical and electronics engineers (IEEE) first benchmark model (FBM). Compared with the results of the power systems computer-aided design (PSCAD) modeling and simulation, the effectiveness of eigenvalue analysis method was proven. After that, the eigenvalue analysis method was used to study, in detail, the effects of system series compensation levels, synchronous generator parameters, speed governing system parameters, and excitation system parameters on SSR characteristics. The research results show that the series compensation level has the greatest influence on the torsional mode damping of the system. The parameters of generator reactance, speed governing system, and excitation system have some effect on the torsional mode damping. The parameters of excitation system significantly affect the low-frequency oscillation damping.

Keywords: eigenvalue analysis method; series compensated transmission; subsynchronous resonance (SSR); torsional mode (TM) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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