Abstract
The optimization of trans-regional electricity transmission scale of China’s Western renewable energy base is crucial to drive China's energy revolution. Currently, the regional power planning or optimization is aimed at minimizing the total economic cost, without taking the cost and benefit of transregional electricity transmission into account. In this paper, a regional planning model considering the cost and benefit of trans-regional electricity transmission was proposed, and the target of trans-regional electricity transmission scale by 2050 was optimized. This study analysed the influence of carbon price, fossil fuel scarcity value, accommodation cost for renewable power on the optimized result of trans-regional electricity transmission scale. Furthermore, the policy implication of the research was also analysed.
Highlights
To address the increasingly severe challenges of climate change and resource depletion, the Chinese government has actively promoted the development of clean energy
The simulation results shows that the total economic cost of different renewable energy development plans corresponding to different trans-regional electricity transmission scales in Qinghai Province decrease with the increase of scarcity value and carbon price, when the renewable energy accommodation cost is set as the medium value
Based on the parameter settings in this paper, the 240billion KWh plan can be the optimal choice of all the trans-regional electricity transmission development plans when the scarcity value exceeds 1200 RMB/tce or the carbon price exceeds 450 RMB/tCO2
Summary
To address the increasingly severe challenges of climate change and resource depletion, the Chinese government has actively promoted the development of clean energy. In 2016, the Chinese government proposed that China would raise the proportion of non-fossil energy consumption in primary energy from less than 15% at present to 50% by 2050 in the Energy Production and Consumption Revolution Strategy (2016-2030)[1]. The power consumption centers are located in the central and eastern regions, while the energy resources are rich in the western region, which has formed the power flow pattern of ‘west to east electricity transmission’ for a long time. In the context of clean energy transition, it has become one of the most important strategies for promoting China's energy revolution to transfer rich renewable energy resources in the western region to the central and eastern regions through (UHV) transmission
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