Series compensation and subsynchronous resonance details analysis of the phenomenon and of its damping by a TCSC

1996 ◽  
Author(s):  
X. Lombard
Keyword(s):  
Series Compensation ◽  
Subsynchronous Resonance

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

Energies ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 3282 ◽  
Author(s):  
Chengbing He ◽  
Dakang Sun ◽  
Lei Song ◽  
Li Ma
Keyword(s):  
Power Systems ◽  
Influence Factors ◽  
Eigenvalue Analysis ◽  
Analysis Method ◽  
Series Compensation ◽  
Excitation System ◽  
Torsional Mode ◽  
Subsynchronous Resonance ◽  
System Parameters ◽  
Governing System

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.

An SSSC-Based Hybrid Series Compensation Scheme Capable of Damping Subsynchronous Resonance

2012 ◽  
Vol 27 (2) ◽  
pp. 531-540 ◽  
Author(s):  
Dipendra Rai ◽  
Sherif O. Faried ◽  
G. Ramakrishna ◽  
Abdel-Aty Edris
Keyword(s):  
Compensation Scheme ◽  
Series Compensation ◽  
Subsynchronous Resonance

Simulation of Power Plant Subsynchronous Resonance Possibility Based on ADPSS

2013 ◽  
Vol 444-445 ◽  
pp. 932-940
Author(s):  
Xiao Meng Li ◽  
Hua Wang ◽  
Zhen An Zhang ◽  
Min Liu ◽  
De Chao Xu
Keyword(s):  
Power Plant ◽  
Power System ◽  
Transmission Line ◽  
Power Grid ◽  
Torsional Oscillation ◽  
High Capacity ◽  
Simulation Software ◽  
Long Distance ◽  
Series Compensation ◽  
Subsynchronous Resonance

The rotor shaft of a steam turbine generator consists of several masses, such as rotors of turbine sections, generator section and exciter section. When the generator is perturbed, it will cause torsional oscillation between different sections. In long-distance high-capacity transmission lines, series compensation with capacitors can enhance power transfer capability of power system, however it may cause subsynchronous resonance (SSR) between the turbine shaft and serial compensation., which produce large shaft torques can result in a reduction in the shaft fatigue life and possibly shaft failure, threatening the security of generator unit and stability of power system. In China the 1000kV HVAC transmission line with series compensation has been put in operation since 2009. Near the Nanyang substation, there has a power plant in Henan power grid. So it is necessary to model the power plant and HVAC transmission line to simulate the possibility of SSR problem. Based on the power system simulation software ADPSS developed by China Electric Power Research Institute (CEPRI), this paper built up the simulation model using the electromechanical-electromagnetic transient hybrid method, and simulated the SSR possibility between the power plant and HVAC transmission line series compensation. The simulation results showed that with the generator parameters given, there has no risk of SSR between them. This paper also gives an evaluation principle of generator SSR risk when connected into a power grid.

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