基于相关场景聚类的发输电联合扩展规划

电源规划和输电网规划是相互影响的,为应对电源和输电网联合规划,建立了多场景发输电联合扩展规划模型。该模型把支路分为已有支路和待选支路,并分别建立直流潮流方程以使得发输电联合扩展规划成为混合整数线性规划问题,其求解可使用成熟的混合整数线性规划软件。发输电联合扩展规划中负荷和风电的场景确定需要考虑相关性和空间分布特征,提出了保持相关性的负荷风电场景聚类方法。最后,通过在MATLAB平台上编写计算程序,使用标准Garver-6节点和IEEE RTS-24节点系统算例验证了所提方法的有效性,并通过对比说明了负荷空间分布对发输电联合扩展规划的影响。

Coordinated Generation and Transmission Expansion Planning with Clusters of Correlative Scenarios

Generation expansion planning and transmission expansion planning interact with each other. In order to integrate generation expansion planning and transmission expansion planning, this paper proposes a multi-scenario generation and transmission expansion planning(MGTEP)model. In the MGTEP model, DC power flow constraints on candidate and existing branches are respectively formulated for linearization. The MGTEP model is a mixed integer linear programming(MILP)problem, which can be solved by mature optimization software. The scenarios of load and wind power output in MGTEP need consider temporal and spatial relations. This paper applies K-means clustering to the calculation of these scenarios containing temporal and spatial relations. Finally, case studies with standard Garver-6 bus and IEEE RTS-24 bus system have testified to the validation of these methods through MATLAB platform and expansion planning of different scenarios are compared to illustrate the impact of load spatial distribution on generation and transmission expansion planning. This work is supported by State Key Program of National Natural Science Foundation of China(No. 51337005)and State Grid Corporation of China(No. XT71-15-040).