考虑送出限制的水-风-储系统优化调控研究

随着我国西北地区风电的规模化开发，探索西北地区的水-风-储多能互补送出模式有利提高电力系统的灵活性、缓解并网消纳问题。通过构建兼顾电力送出通道利用率和互补系统收益的多目标模型，提出互补系统的容量配置及分时电价下的运行策略，并将该方法应用于黄河上游的多能互补基地。经过对两种大型互补系统的容量配置与调控策略进行对比分析，验证了互补系统对于提高电力送出通道利用率、消纳弃风及改善运行收益的重要作用。模拟结果表明，风电不确定性程度、分时电价和电力送出通道容量对系统互补效果影响较大。该方法可为未来新能源与水电互补系统的规划和运行提供技术支持和参考。

Optimal control of water-wind-storage system considering limitation of transmission

With the rapid expansion of the development and utilization of wind power, the volatility of power and limited power delivery problems have brought new challenges to the consumption and utilization of wind power. In view of the water-wind-storage complementary delivery mode in northwest China, a multi-objective model is built considering both the utilization rate of power transmission channel and the revenue of complementary system, based on which the energy storage operation strategy under the time-of-use price is proposed. Then, this method is applied to a multi-energy complementary base in the upper reaches of the Yellow River. By comparing and analyzing the control strategies of the two large complementary systems, it is proved that the complementary system play an important role in improving the utilization rate of the power delivery channel, absorbing the wind curtailment and improving the operating income. Finally, results show that the uncertainty degree of wind power, the time-of-use price and power transmission channel capacity have great influence on the system complementary effect. This method can provide technical support and reference for the planning and operation of the new energy and hydropower complementary system in the future.