考虑输配电网协同的源荷储资源统筹规划

未来高比例可再生能源并网背景下,为提高集中式与分布式可再生能源的消纳,需对电力系统中多类型调节资源进行统筹规划。提出一种计及输配电网间交互过程的中长期电源规划框架,以协调输配电系统中源-荷-储调节资源的配置容量。然后,基于分布式优化理论将模型分解为输电网规划子问题和配电网规划子问题。对于分解后子规划模型中的非凸和非线性项,采用凸松弛和线性化技术将模型转化为混合整数二阶锥规划模型进行求解。最后,对由IEEE 14节点系统和IEEE 33节点系统构造的全局系统进行仿真,验证所提模型和优化方法的有效性,并分析了协同规划下系统整体经济性和可再生能源消纳情况。

Overall Planning of Source-Load-Storage Resources Considering Coordination in Transmission and Distribution Network

Under the background of high-proportion grid-connected renewable energy in the future, the planning of multi-type adjusting resources in the power system is needed to improve the consumption of centralized and distributed renewable energy. This paper proposes a generation planning framework that considers the interaction process between transmission and distribution, and coordinates the capacity of source-load-storage resources in power system. Then, according to the distributed optimization theory, the model is decomposed into two planning sub-problems for transmission and distribution network. For the non-convex and nonlinear terms in the decomposed sub-program model, convex relaxation and linearization techniques are used to transform the model into a mixed integer second-order cone program for solution. Finally, this paper simulates the global system constructed by the IEEE 14-node system and the IEEE 33-node system to verify the effectiveness of the proposed model and optimization method, and analyzes the economy of the system and renewable energy consumption under coordinate planning.