考虑氢-氧双循环系统运行灵活性的协调优化调度

Coordinated Optimal Dispatch Considering Operation Flexibility of Hydrogen-Oxygen Dual-cycle System

针对新能源高占比电网电力平衡能力不足、调节灵活性欠缺的问题,提出了新能源与火电综合调节的氢-氧双循环灵活经济优化调度策略。首先,介绍了氢-氧双循环提升电网运行调节能力的机制,建立了电解水装置、富氧深调机组和燃气机组的灵活调节特性模型。然后,计及储能与柔性负荷,建立了新能源与火电综合调节的氢-氧双循环灵活经济优化调度模型。将负荷、新能源弃限成本与随机波动风险进行量化,兼顾经济性与灵活性构建综合成本目标函数。最后,以改进的IEEE 39节点系统算例验证了氢-氧双循环机制对提升系统运行调节效能的有效性。

Aiming at the problems of insufficient power balance capacity and lack of regulation flexibility in the power grid with high proportion of renewable energy,a flexible economic optimal dispatch strategy of hydrogen-oxygen dual-cycle for comprehensive regulation of renewable energy and thermal power is proposed.First,the mechanism of hydrogen-oxygen dual-cycle improving regulation capacity of power system operation is introduced,and the model for the flexible regulation characteristics of water electrolytic devices,oxygen-enriched deep-regulation units and gas-fired generators are established.Then,considering the energy storage and flexible load,an flexible economic optimal dispatch model of hydrogen-oxygen dual-cycle for comprehensive regulation of renewable energy and thermal power is established.Through the quantification of load and renewable energy abandonment cost and random fluctuation risk,the comprehensive cost objective function is constructed considering economy and flexibility.Finally,the effectiveness of the hydrogen-oxygen dual-cycle mechanism of improving the system operation and regulation is verified with the modified IEEE 39-bus system.