基于燃氢燃气轮机的风光火储多能互补优化调度

Wind-PV-thermal-storage Multi-energy Complementary Optimal Dispatching Based on Hydrogen Gas Turbine

由于燃氢燃气轮机的技术成熟、调节能力强,可将电–氢储–电互补系统转变为电–氢储–电/热互补系统,拓宽多能互补的途径,建立基于燃氢燃气轮机的氢储能单元(hydrogen energy storage unit,HESU),进而构建一个电–热–氢多能互补系统(electricity-heat-hydrogen complementary system,EHHCS)。从可再生能源电解水制氢、储氢技术、燃氢燃气轮机技术3个方面探讨了系统互补优化运行机理并建模;计及HESU多能转换效率,建立了以系统电热运行成本最低、最大化消纳弃风为目标的含EHHCS的优化调度模型,并通过仿真验证了其有效性。结果表明,采用燃氢燃气轮机作为HESU的发电环节是一种可行方案,HESU的电能利用效率约为75%,达到了抽蓄的能效水平,具有实用价值。研究结果可为含储能单元的多能互补优化调度提供参考。

The mature technology and strong adjustment ability of the hydrogen gas turbine is able to transform the electricity-hydrogen energy storage-electricity complementary system into the electricity-hydrogen energy storage-electricity/heat complementary system,thus broadening the routes of the multi-energy complementation.Therefore,this paper establishes a hydrogen energy storage unit(HESU)based on the hydrogen gas turbine,and an electricity-heat-hydrogen complementary system(EHHCS)is formed.The optimal operation mechanism of the system is analyzed and the modeling is completed from three inspects,including the hydrogen production by water electrolysis of renewable energy,the hydrogen energy storage technology,and the hydrogen gas turbine technology.Considering the multi-energy conversion efficiency of the HESU,and taking the purpose of minimizing the operation costs and promoting the wind power accommodation,an optimal dispatching model of the grid with the EHHCS is established,whose effectiveness is verified with simulation.Results show that adopting the hydrogen gas turbine as the generating part of the HESU is a feasible scheme.The electric power efficiency of the HESU is about 75%,which reaches the energy efficiency level of the pumped storage,having a practical value.The results will provide a reference for the optimal dispatching of the multi-energy complementary system with energy storage units.