scholarly journals Coordinated control strategy of reactive power for large-scale wind power transmission by LCC-HVDC links

2017 ◽  
Vol 2017 (13) ◽  
pp. 1082-1086 ◽  
Author(s):  
Wang Zhibing ◽  
Xu Yang ◽  
Wang Xitian
Author(s):  
Fei Xia ◽  
Zongze Xia ◽  
Peixian Cong ◽  
Zhixiong Yang ◽  
Hanbiao Song ◽  
...  

Author(s):  
Li Yunwei ◽  
Yujun Zhang ◽  
Hua Liu

Aiming at a wide range and high-frequency reactive voltage fluctuation problem in 750kV power grid which due to large-scale wind power, a coordinated control strategy of a multiple FACTS (Flexible Alternative Current Transmission Systems) configuration is investigated in the paper. System-level and electromagnetic transient level control method of multiple FACTS devices are proposed in the small wind power fluctuation, big disturbance and off-grid level, and the priorities and the principles are determined. The strategy is applied to “Xinjiang and Northwest 750kV main grid interconnection second channel project”, and the correctness and effectiveness is proved.


Electronics ◽  
2021 ◽  
Vol 10 (23) ◽  
pp. 3044
Author(s):  
Xia Zhou ◽  
Cangbi Ding ◽  
Jianfeng Dai ◽  
Zhaowei Li ◽  
Yang Hu ◽  
...  

Subsequent commutation failures (CFs) in HVDC systems will cause large-scale power flow transfer in AC/DC transmission systems and lead to overload risk in HVAC systems. In order to cope with these effects, a power coordination control strategy for the AC/DC transmission system with high-proportion wind power is proposed. Firstly, a model of the AC/DC transmission system considering the large-scale wind farms access is established by analyzing the power transmission characteristics of the AC/DC transmission system with high-proportion wind power, and the power transmission characteristics are analyzed after subsequent CFs. Secondly, the HVDC subsequent CFs can be mitigated by adjusting DC power transmission, while the active power output of the sending-end AC system is reduced by active control of wind turbine generators (WTGs) to reduce the overload risk of the HVAC system. Finally, the proposed power coordination control strategy is simulated and verified based on the established simulation model and actual power grid, and the results show that this strategy can effectively mitigate HVDC’s subsequent CFs and reduce the overload risk in HVAC systems.


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