Abstract:Multiterminal VSC-HVDC system(VSC-MTDC) is an ideal approach to connect wind farm with power grid. According to the planning, A VSC-MTDC projectwill be built in an island. The wind farms and load on the island will be connected with the land grid through AC and DC transmission lines, so performance of systemwill be very complex. To build strong smart grid, the effect of VSC-MTDC on the grid should be analyzed detailedly. The model of AC-DC hybrid transmission system which contains VSC-MTDC is built in the PSCAD/EMDTC, and the stability characteristics of grid in the hybrid transmission mode isanalysed. Simulation results indicate that the access of VSC-MTDC to the grid can enhance system stability, and the power output of wind farm can be ensured. When AC line is out of operation which is due to failure or maintenance, parallel converter station undertakes the entire power transmission ofwind farm, so the system stability is improved.
杨小磊. 多端柔性直流输电系统接入某海岛电网的研究[J]. 电气技术, 2015, 16(05): 12-16.
Yang Xiaolei. Study on the Accessof Multi-Terminal VSC-HVDC to an Island Grid. Electrical Engineering, 2015, 16(05): 12-16.