• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

Electric Power Construction ›› 2017, Vol. 38 ›› Issue (8): 136-.doi: 10.3969/j.issn.1000-7229.2017.08.019

Previous Articles    

 Influence of Large Capacity VSC-HVDC Transmission System on Transient Stability of Grid
 

 LIN Zhangsui

 
  

  1.  (State Grid Fujian Power Economic Research Institute, Fuzhou 350012, China)
     
  • Online:2017-08-01
  • Supported by:
     

Abstract:  ABSTRACT:  Based on the voltage source converter-high voltage direct current (VSC-HVDC) demonstration project in Xiamen, this paper analyzes the influence mechanism of large capacity VSC-HVDC transmission system on transient stability in the AC grid, and uses PSD-BPA simulation tools to analyze the transient stability of power grid after large capacity VSC-HVDC transmission system access. The results show that there is no significant effect of VSC-HVDC on the transient stability of AC grid under single fault, while the active power of VSC-HVDC and the short circuit ratio (SCR) both have effects on the transient voltages. The system voltage stabilization level can be improved by increasing power transmission of VSC-HVDC to AC grid, and the smaller the short-circuit ratio is, the more obvious the effect is. In view of the safety and stability of AC/DC hybrid power grid, corresponding measures and suggestions are put forward.

 

Key words:  VSC-HVDC, AC/DC hybrid transmission system, transient stability, short-circuit ratio (SCR)

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