Study on Power Optimization of the Trans-Regional UHVDC Delivery Channels in Promoting Renewable Energy Accommodation Capacity

doi:10.11930/j.issn.1004-9649.201806111

Abstract

Abstract: With the operation of trans-regional UHVDC transmission channels, the outbound delivery capacity of the "Three-North" (i.e., Northeast China, Northwest China and North China) regions has been increasing year by year. However, the problem of wind power and photovoltaic power curtailment has not been fundamentally solved. Based on the actual situation of power grid operation, the coordinated optimization of multi-region UHVDC outbound deliver power is studied to promote renewable energy accommodation of multiple regions. Firstly, the distribution characteristics of renewable energy power curtailment in typical areas are analyzed, and the complementarity of renewable energy generation power among different regions is studied. Secondly, an analytical model of renewable energy accommodation capacity is established with consideration of the power optimization of trans-regional UHVDC transmission channels. Finally, the effects of power complementation of trans-regional UHVDC transmission channels are predicted in promoting accommodation of renewable energy for multiple regions. The case study results show that the proposed optimization method for UHVDC operation can effectively improve the renewable energy accommodation capacity of the entire power system.

Key words: UHVDC, renewable energy, accommodation, wind power curtailment, photovoltaic power curtailment

CLC Number:

TM61

DONG Cun, LIANG Zhifeng, LI Xiaofei, WANG Yuefeng, BAI Jie, WANG Shuai. Study on Power Optimization of the Trans-Regional UHVDC Delivery Channels in Promoting Renewable Energy Accommodation Capacity[J]. Electric Power, 2019, 52(4): 41-50.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201806111

https://www.electricpower.com.cn/EN/Y2019/V52/I4/41

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