新能源消纳电量库交易机制的实践与经验

Practice and Experience of Trading Mechanism for Energy Pool of Renewable Energy Accommodation

近年来,随着清洁低碳能源战略持续推进,新能源装机容量快速增长,新能源发电在系统中的比例不断提升。新能源高渗透性、随机性和波动性对系统调节能力和承载能力提出更高的要求。在深入分析新能源发电特性的基础上,挖掘电网互补潜力,提出新能源电量库交易机制。首先,建立新能源电量库交易模型,设置约束条件,给出交易申报和出清方式。然后,探索综合考虑灵活价格机制和电量库价值体系的价格机制,给出电量库结算方式。最后,基于中国西北电网新能源消纳实际,创新开展主控区置换电量库、援疆电量库、陕青省间调峰置换电量库等多品种交易实践。实际数据表明,电量库机制充分展现了系统调节价值,能够调动平抑新能源波动的系统灵活调节能力,显著提升新能源消纳水平。

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.