新能源消纳电量库交易机制的实践与经验

In recent years, with the continuous promotion of clean and low-carbon energy strategy, the installed capacity of renewable energy is growing rapidly, and the proportion of renewable energy generation in the system keeps increasing. The high permeability, the randomness and volatility of renewable energy put forward higher requirements for the regulation and carrying capacity of the system. On the basis of in-depth analysis of the characteristics of renewable energy generation, this paper explores the complementary potential of the power grid, and proposes the trading mechanism of the energy pool for renewable energy. First, the trading model of the energy pool for renewable energy is established; the constraint conditions are set; and the trading declaration and clearing methods are given. Then, the price mechanism considering the flexible price and the value system of the energy pool is explored. The settlement method of the energy pool is given. Finally, based on the practice of renewable energy accommodation in Northwest Power Grid of China, various kinds of trading practices are innovated and carried out, such as the replacement of the energy pool in the main control area, the energy pool in Xinjiang Autonomous Region, and the peak shaving and replacement of the energy pool between Shaanxi and Qinghai Provinces, China. The actual data shows that the energy pool mechanism fully demonstrates the value of system regulation; it can mobilize the flexible adjustment ability of the system to stabilize the fluctuation of renewable energy, and significantly improve the level of renewable energy accommodation.