• 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 ›› 2022, Vol. 43 ›› Issue (1): 49-62.doi: 10.12204/j.issn.1000-7229.2022.01.006

• Characteristics Analysis, Operation and Control of AC/DC Power Grid with High Proportion ofRenewable Energy•Hosted by Professor XIN Yechun, Professor JIANG Tao, Professor WU Xueguang and Dr. SONG Xiaozhe• • Previous Articles     Next Articles

Interaction Between AC and DC Grid-Connected Sub-Synchronous and Super-Synchronous Oscillations in Wind Farms

YANG Xiu1, HU Haoran1(), LI Zengyao1, LI Lihua2, WU Qiong3, XU Licheng1   

  1. 1. School of Electric Power Engineering, Shanghai University of Electric Power, Shanghai 200090,China
    2. State Grid Shanghai Electric Power Research Institute, Shanghai 200092,China
    3. China Yangtze Power Company Limited, Yichang 443002, Hubei Province, China
  • Received:2021-09-13 Online:2022-01-01 Published:2021-12-21
  • Supported by:
    National Natural Science Foundation of China(51807114);Shanghai Science and Technology Commission(18DZ1203200)


Applying the state space modeling method, the small disturbance models of different wind farms connected to the power grid through paralleled AC and DC lines are established, and the generation mechanism of various oscillation modes in the system is analyzed in detail. Furthermore, the differences of the effects of system structure parameters and key controller parameters on the natural oscillation mode and coupled oscillation mode of the system are analyzed. On this basis, the interaction mechanism and factors between AC and DC system are revealed. The correctness of the system is verified by time-domain simulation on PSCAD / EMTDC platform. The results show that the influence of system parameters on the coupled oscillation modes between AC and DC systems is complex.

Key words: eigenvalue analysis method, AC/DC hybrid connection, sub-synchronous and super-synchronous oscillation, interactive influence

CLC Number: