考虑多设备最优能流路径的电-气互联系统运行优化  

Operation Optimization of Electricity-Natural Gas Interconnected System Considering the Optimal Energy Flow Path of Multiple Devices

作　　者：牛启帆 武鹏[1] 张菁[1] 沈依婷 杨建林 NIU Qifan;WU Peng;ZHANG Jing;SHEN Yiting;YANG Jianlin(School of Electronic and Electrical Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Economic and Technological Research Institute,State Grid Shanghai Municipal Electric Power Company,Shanghai 200120,China)

机构地区：[1]上海工程技术大学电子电气工程学院,上海201620 [2]国网上海市电力公司经济技术研究院,上海200120

出　　处：《电力系统及其自动化学报》2020年第7期109-116,共8页Proceedings of the CSU-EPSA

摘　　要：为满足用户在多能负荷实时需求下对能源的优化管理,提出一种考虑多设备最优能流路径的运行优化方法。首先,考虑实时能源价格和逐时负荷,建立基于能源集线器理论的能源中心模型,模型含多台能源转换设备以提供灵活的能流路径选择;然后,以系统购能成本最小为目标、能源分配系数为优化变量,计及设备容量、网络潮流等约束建立最优潮流模型,应用遗传算法进行求解;最后,采用8节点的配电网和9节点的天然气互联系统作为算例,基于本文所提方法进行建模并求解。算例结果表明实时能源价格的需求响应下,对能流路径的优化能有效降低系统购能成本,实际运行中,设备转换效率的变化能够影响系统能流路径的改变。To satisfy the users’ optimal management of energy under the real-time demand of multi-energy load,an operation optimization method considering the optimal energy flow path of multiple devices is proposed. First,with the consideration of the real-time energy prices and hourly load,an energy center model is built based on the energy hub concept,which contains multiple energy conversion devices to provide a flexible selection of energy flow paths. Then,an optimal power flow model is established with the objective of minimizing the system energy purchase cost and the optimization variable of energy allocation coefficient,while taking into account constraints such as equipment capacity and network power flow. Afterwards,genetic algorithm is used to solve this model. Finally,an interconnected system consisting of an 8-node distribution network and a 9-node natural gas network is taken as an example,and the corresponding model is established and solved based on the proposed method. Results show that under the demand response of real-time energy prices,the optimization of energy flow path can effectively reduce the system energy purchase cost.In actual operation,the changes in equipment conversion efficiency can affect the variations of energy flow path in the system.

关 键 词：能流路径 实时能源价格 能源集线器 最优潮流模型 遗传算法 

分 类 号：TM715[电气工程—电力系统及自动化]