Quantitative Analysis of Key Influencing Factors of Renewable Energy Accommodation in Hunan Power Grid

By the end of 2020, the installed capacity of renewable energy in Hunan Power Grid is close to 10.6 million kW, accounting for 19% of the total installed capacity of the province. It is the third largest power source of Hunan Power Grid. Because of being limited by the anti-peaking characteristics of renewable energy, the large peak-valley difference of power load, the lack of adjustability of a large amount of hydropower in flood season, the contradiction of renewable energy accommodation has gradually become prominent. By the end of the 14th Five Year Plan, the renewable energy capacity will further double, and exceed hydropower to become the second largest power source in the province. The accommodation situation is unclear, and relevant research is urgently needed. Against the above background, this article focuses on the current status of the renewable energy power generation operation of the Hunan Power Grid, and sorts out the key technical reasons that affect the accommodation of renewable energy. This paper also conducts sensitivity analysis of key influencing factors to quantify the effect of key influencing factors on renewable energy accommodation. Studies have shown that energy storage instead of conventional thermal power can solve problems such as insufficient peak shaving capacity of the power grid and difficulty in absorbing renewable energy. It is of great significance to achieve the goal of reaching carbon peaks and to ensure the safety of energy and power in the province.