考虑综合需求响应的含光热电站的综合能源系统低碳优化调度

Low-carbon optimal scheduling of integrated energy system with photo-thermal power station considering comprehensive demand response

综合能源系统是一种可以实现多能耦合的能源管理系统,也是实现“双碳”目标的有效途径之一。为解决传统热电联产综合能源系统运行中热-电耦合不灵活造成的经济性与环保性差的问题,文中提出一种考虑综合需求响应和奖惩阶梯型碳交易的含光热电站的综合能源系统优化运行模型。首先,为打破传统热电联产机组的“以热定电”刚性约束,在供能侧构造光热电站、地源热泵和热电联产机组协同运行模型;其次,为进一步降低系统碳排放,在传统碳交易机制基础上引入对碳排放约束能力更强的奖惩阶梯型碳排放机制;然后,结合需求侧柔性电、热负荷的可转移、可削减特性,在能源价格引导下建立相应的综合需求响应机制,构建以运行成本、弃能惩罚成本、碳交易成本和需求响应补偿成本总和最低的优化目标函数;最后,设置不同场景,通过算例分析验证所提模型和策略对解决热电联供矛盾和实现系统低碳运行的可行性。

Integrated energy system is an energy management system which can realize multi-energy coupling,and is one of the effective ways to realize the"dual-carbon"goal.In order to solve the problem of poor economy and environmental protection caused by the inflexibility of thermal-electric coupling in the operation of the traditional cogeneration integrated energy system,an optimization operation model of integrated energy system with photo-thermal power station is proposed,which considers the comprehensive demand response and the reward-punishment ladder carbon trading.In order to break the rigid constraint of"determining power based on heat"of traditional cogeneration units,a collaborative operation model of photo-thermal power station,geothermal heat pump and cogeneration units is constructed on the energy supply side.In order to further reduce the carbon emissions of the system,a reward-punishment ladder carbon emission mechanism with stronger carbon emission constraint capacity is introduced on the basis of traditional carbon trading mechanism.In combination the transferable and reducible characteristics of the flexible electricity and thermal loads on the demand side,a corresponding comprehensive demand response mechanism is established with the guidance of energy prices,and the optimal objective function with the minimum sum of the operating cost,energy abandonment penalty cost,carbon trading cost and demand response compensation cost is constructed.Different scenarios are set up,and the feasibility of the proposed model and strategy in solving the contradiction of cogeneration and achieving low-carbon operation of the system is verified by means of the numerical analysis.