面向越来越开放的能源交易市场,为充分调动用户侧资源,提出了一种考虑需求响应(demand response,DR)的电/热/气云储能(cloud energy storage,CES)优化配置策略。建立含电/热/气云储能能源集线器(energy hub,EH)结构,从参与云储能商业模...面向越来越开放的能源交易市场,为充分调动用户侧资源,提出了一种考虑需求响应(demand response,DR)的电/热/气云储能(cloud energy storage,CES)优化配置策略。建立含电/热/气云储能能源集线器(energy hub,EH)结构,从参与云储能商业模式的用户侧与云储能提供商出发,构建两主体双层优化模型。底层基于长短期记忆和贝叶斯神经网络的概率预测方法,刻画新能源出力的不确定性,建立考虑需求响应的用户侧云储能充放能模型,以用户总成本最小为目标优化决策用户侧充放能行为,并将决策信息传递到云储能提供商。顶层以云储能提供商的总成本最小为目标,集中优化决策实体储能功率和容量的配置问题。通过大M法对目标以及约束中的非线性部分进行松弛线性化,将其转化为混合整数线性规划模型。最后,建立4个典型应用场景,通过Matlab中的YALMIP工具箱调用CPLEX优化求解器对不同场景下的模型进行求解,联合对比在4种不同场景下的整体成本与收益,验证该策略在资源共享、节约系统整体成本等方面的优越性。展开更多
在传统模式下,多区域综合能源系统(integrated energy system,IES)由于地理位置分散,往往都是独立运行,彼此间缺乏协调,难免存在资源配置不合理的问题,这不利于各区域的经济调度。文章首先提出一种多区域综合能源系统协调经济调度模型,...在传统模式下,多区域综合能源系统(integrated energy system,IES)由于地理位置分散,往往都是独立运行,彼此间缺乏协调,难免存在资源配置不合理的问题,这不利于各区域的经济调度。文章首先提出一种多区域综合能源系统协调经济调度模型,其不仅能实现各自区域内的电热功率平衡,还能实现不同区域间的电热互补,然后采用分布式优化方法对模型进行求解。通过对比协调模式与传统的非协调模式,仿真结果表明,在该协调模式下,不同区域通过电能和热能交换,能够合理分配能源,实现综合能源系统的经济运行。从能源总需求量、储能设备调度结果和各区域间能源集线器(energy hub,EH)的能量交换情况3个方面验证了所构建模型的有效性。展开更多
The penetration of multi-carrier energy systems in distribution system gains more and more concerns.In this paper,a bi-level transactive energy trading framework is proposed to improve the energy scheduling and operat...The penetration of multi-carrier energy systems in distribution system gains more and more concerns.In this paper,a bi-level transactive energy trading framework is proposed to improve the energy scheduling and operation efficiency for multi-carrier energy systems which are modeled as energy hubs(EHs).In the upper level,each EH in the distribution system not only makes energy scheduling decisions considering supplies and demands of local energy,but also trades energy with each other to further maximize their social welfare.The associated trading payment among EHs is made in a fair manner by applying Nash bargaining theory.We solve the bargaining problem by decomposing it into two subproblems:operation cost minimization problem and payment bargaining problem.Then,based on the trading decision,the nodal equivalent loads of EHs are sent to the distribution system operator(DSO)without publishing trading details.By applying the second-order cone programming(SOCP),DSO reconfigures the network to reduce the transmission loss of the system in the lower level.The network reconfiguration and the trading behavior of EHs interact and iterate until the convergence.Numerical studies on modified IEEE 33-bus distribution system demonstrate the effectiveness of the proposed framework.展开更多
针对当前综合能源系统(integrated energy system,IES)研究中未详细考虑含电-热-气-冷-汽子系统(power,heat,gas,cooling and steam subsystems,PHGCSS)协调运行效果的现状,研究计及能源子系统关键特征变量的IES日前稳态优化问题。首先...针对当前综合能源系统(integrated energy system,IES)研究中未详细考虑含电-热-气-冷-汽子系统(power,heat,gas,cooling and steam subsystems,PHGCSS)协调运行效果的现状,研究计及能源子系统关键特征变量的IES日前稳态优化问题。首先,基于多类型负荷需求设计能源集线器(energy hub,EH)及能量耦合方式。在EH基础上提出耦合PHGCSS的能源站模型构架。然后,分别建立IES中PHGCSS稳态数学模型。在考虑峰谷分时电价机制基础上分析蓄电、蓄热、蓄冷对并网运行的IES日前稳态优化的影响。其次,在不同负荷结构下建立含PHGCSS日前稳态非线性优化模型。最后,通过算例分析验证对IES进行稳态优化计算和稳态运行分析的有效性,结果表明,所提模型与方法适用于含PHGCSS的IES日前稳态优化分析及日前动态经济调度,能够合理反映IES的运行特性。展开更多
文摘面向越来越开放的能源交易市场,为充分调动用户侧资源,提出了一种考虑需求响应(demand response,DR)的电/热/气云储能(cloud energy storage,CES)优化配置策略。建立含电/热/气云储能能源集线器(energy hub,EH)结构,从参与云储能商业模式的用户侧与云储能提供商出发,构建两主体双层优化模型。底层基于长短期记忆和贝叶斯神经网络的概率预测方法,刻画新能源出力的不确定性,建立考虑需求响应的用户侧云储能充放能模型,以用户总成本最小为目标优化决策用户侧充放能行为,并将决策信息传递到云储能提供商。顶层以云储能提供商的总成本最小为目标,集中优化决策实体储能功率和容量的配置问题。通过大M法对目标以及约束中的非线性部分进行松弛线性化,将其转化为混合整数线性规划模型。最后,建立4个典型应用场景,通过Matlab中的YALMIP工具箱调用CPLEX优化求解器对不同场景下的模型进行求解,联合对比在4种不同场景下的整体成本与收益,验证该策略在资源共享、节约系统整体成本等方面的优越性。
文摘在传统模式下,多区域综合能源系统(integrated energy system,IES)由于地理位置分散,往往都是独立运行,彼此间缺乏协调,难免存在资源配置不合理的问题,这不利于各区域的经济调度。文章首先提出一种多区域综合能源系统协调经济调度模型,其不仅能实现各自区域内的电热功率平衡,还能实现不同区域间的电热互补,然后采用分布式优化方法对模型进行求解。通过对比协调模式与传统的非协调模式,仿真结果表明,在该协调模式下,不同区域通过电能和热能交换,能够合理分配能源,实现综合能源系统的经济运行。从能源总需求量、储能设备调度结果和各区域间能源集线器(energy hub,EH)的能量交换情况3个方面验证了所构建模型的有效性。
文摘The penetration of multi-carrier energy systems in distribution system gains more and more concerns.In this paper,a bi-level transactive energy trading framework is proposed to improve the energy scheduling and operation efficiency for multi-carrier energy systems which are modeled as energy hubs(EHs).In the upper level,each EH in the distribution system not only makes energy scheduling decisions considering supplies and demands of local energy,but also trades energy with each other to further maximize their social welfare.The associated trading payment among EHs is made in a fair manner by applying Nash bargaining theory.We solve the bargaining problem by decomposing it into two subproblems:operation cost minimization problem and payment bargaining problem.Then,based on the trading decision,the nodal equivalent loads of EHs are sent to the distribution system operator(DSO)without publishing trading details.By applying the second-order cone programming(SOCP),DSO reconfigures the network to reduce the transmission loss of the system in the lower level.The network reconfiguration and the trading behavior of EHs interact and iterate until the convergence.Numerical studies on modified IEEE 33-bus distribution system demonstrate the effectiveness of the proposed framework.
文摘针对当前综合能源系统(integrated energy system,IES)研究中未详细考虑含电-热-气-冷-汽子系统(power,heat,gas,cooling and steam subsystems,PHGCSS)协调运行效果的现状,研究计及能源子系统关键特征变量的IES日前稳态优化问题。首先,基于多类型负荷需求设计能源集线器(energy hub,EH)及能量耦合方式。在EH基础上提出耦合PHGCSS的能源站模型构架。然后,分别建立IES中PHGCSS稳态数学模型。在考虑峰谷分时电价机制基础上分析蓄电、蓄热、蓄冷对并网运行的IES日前稳态优化的影响。其次,在不同负荷结构下建立含PHGCSS日前稳态非线性优化模型。最后,通过算例分析验证对IES进行稳态优化计算和稳态运行分析的有效性,结果表明,所提模型与方法适用于含PHGCSS的IES日前稳态优化分析及日前动态经济调度,能够合理反映IES的运行特性。
