考虑热网潮流的区域热-电综合能源系统协同优化配置研究

Research on Collaborative Optimal Allocation of District Thermal-Electric Integrated Energy System Considering Thermal Network Power Flow

区域热-电综合能源系统作为连接跨区域和用户侧综合能源系统的“桥梁”,如何协同其设备配置与系统运行是值得关注的问题。首先,研究建立了考虑流向可变量调节运行方式下的热网模型,通过松弛结合罚函数的方式将其转化为二阶锥形式;进一步结合其他设备及电网潮流模型建立了协同优化配置模型,该模型下的设备配置策略能够同时优化多种设备接入节点的位置及其配置容量。算例结果表明:与传统配置策略相比,同时考虑设备容量及节点位置的配置策略能够减少设备容量配置冗余,降低规划及运行综合成本;流向可变的热网模型能提供更灵活的运行方式以增加设备配置的灵活性,得到成本更低的配置方案。

As a "bridge" connecting inter-regional and user-side integrated energy systems,the coordinated configuration and operation of a district thermal-electricity integrated energy system is a topic worthy of attention.A thermal network model considering variable flow direction regulation operation is established,which is transformed into second-order cone form by relaxed combination with penalty function.Further combined with other equipment and power grid flow models,a collaborative optimal allocation model is established.The device configuration strategy under this model can simultaneously optimize the location and capacity of multiple device access nodes.The results show that compared with traditional allocation strategies,the allocation strategy that simultaneously considers both equipment capacity and node location can reduce equipment capacity redundancy and lower planning and operating costs.The thermal network model with variable flow direction can provide more flexible operation modes to increase the flexibility of equipment configuration and obtain configuration solutions with lower costs.