Power market construction is an important part of the marketization reform in China's electric power industry and an essential part of the economic system reform in China. With the social and economic development,...Power market construction is an important part of the marketization reform in China's electric power industry and an essential part of the economic system reform in China. With the social and economic development, the contradiction between distribution of energy resources and development of regional economies gets increasingly noticeable, and a united national power market is consequentially required to optimize the allocation of energy resources over the whole country. Analyses indicate that the development of UHV grid will provide a strong material support for the united national power market by expanding market coverage, lowering load fluctuation and promoting diversif ication of power resources.展开更多
在构建新型电力系统、实现双碳战略目标的背景下,综合能源生产单元(integrated energy production unit,IEPU)可作为传统燃煤发电机组的一种绿色改造方案。以IEPU为研究对象,提出一种数据驱动的IEPU参与日前电-气耦合市场的分布鲁棒自...在构建新型电力系统、实现双碳战略目标的背景下,综合能源生产单元(integrated energy production unit,IEPU)可作为传统燃煤发电机组的一种绿色改造方案。以IEPU为研究对象,提出一种数据驱动的IEPU参与日前电-气耦合市场的分布鲁棒自调度方法。首先建立光伏发电的区间不确定性集;其次根据日前电力市场和天然气市场的历史价格数据构建分布鲁棒模糊集;之后以利润最大化为目标建立IEPU参与日前电-气耦合市场分布鲁棒自调度模型;然后基于对偶理论将模型转化为易求解的混合整数线性规划问题;最后案例分析表明与偏保守的鲁棒优化方法相比,采用分布鲁棒优化方法处理价格不确定性可以有效平衡自调度方案的鲁棒性和经济性。展开更多
文摘Power market construction is an important part of the marketization reform in China's electric power industry and an essential part of the economic system reform in China. With the social and economic development, the contradiction between distribution of energy resources and development of regional economies gets increasingly noticeable, and a united national power market is consequentially required to optimize the allocation of energy resources over the whole country. Analyses indicate that the development of UHV grid will provide a strong material support for the united national power market by expanding market coverage, lowering load fluctuation and promoting diversif ication of power resources.
文摘联合循环(Combined Cycle, CC)机组具有能源利用效率高、温室气体排放量低和运行方式灵活等特性,在电力系统中得到了越来越广泛的应用,积极参与到电力市场的竞价中。为了研究CC机组在日前电量市场中的竞价行为,文中提出了一种日前电量市场中CC机组竞价策略双层模型。上层模型为基于模式的CC机组竞价模型,下层模型为日前电量市场出清模型。该模型中的CC机组和独立系统运营商(Independent System Operator, ISO)通过电量市场出清得到的节点边际电价(Locational Marginal Prices, LMP)相互影响。CC机组向ISO提交报价同时影响电量市场的出清结果,并根据ISO进行的下层市场出清结果安排发电计划。利用Karush-Kuhn-Tucker(KKT)条件和对偶理论,将所提出的双层优化模型转化为均衡约束数学规划问题(Mathematical Program With Equilibrium Constraint, MPEC)。结果显示,文中所提出的竞价策略提高了CC机组在电量市场中的收益12.28%,降低市场的运行成本25.37%,验证了所提出模型的有效性。
文摘在构建新型电力系统、实现双碳战略目标的背景下,综合能源生产单元(integrated energy production unit,IEPU)可作为传统燃煤发电机组的一种绿色改造方案。以IEPU为研究对象,提出一种数据驱动的IEPU参与日前电-气耦合市场的分布鲁棒自调度方法。首先建立光伏发电的区间不确定性集;其次根据日前电力市场和天然气市场的历史价格数据构建分布鲁棒模糊集;之后以利润最大化为目标建立IEPU参与日前电-气耦合市场分布鲁棒自调度模型;然后基于对偶理论将模型转化为易求解的混合整数线性规划问题;最后案例分析表明与偏保守的鲁棒优化方法相比,采用分布鲁棒优化方法处理价格不确定性可以有效平衡自调度方案的鲁棒性和经济性。