多能耦合三相不平衡主动配电网与输电网交互随机模糊潮流方法

A Random Fuzzy Power Flow Method Considering Interaction of Multi-energy Coupling Three-phase Unbalanced Active Distribution Network and Transmission Network

随着能源互联网建设推进,含能量枢纽和高比例风电主动配电网与输电网交互更加紧密,输配全局潮流计算面临新挑战。该文基于体系(system of systems,SoS)概念,定义输电网和其接入的多个主动配电网为既独立又交互的体系系统,考虑含随机模糊性风电能量枢纽与配电网有功功率双向交互,获取主动配电网与输电网交互状态;进一步考虑输电网规模化风电接入和配网负荷三相不平衡,建立含风电和能量枢纽等的多能耦合三相不平衡主动配电网与输电网交互全局随机模糊潮流So S模型;提出结合随机模糊模拟、输配交互状态、前推回代和牛顿拉夫逊法的模型并行求解算法。改进的IEEE39节点输电网和IEEE33节点配电网算例仿真结果表明文中方法正确有效。

With the advancement of energy Internet construction, active distribution networks(ADN) with energy hubs(EH) and high-proportion wind power are more closely interacting with transmission network(TN). The global power flow calculation of transmission and distribution faces new challenges. Based on the concept of system of systems(SoS), this paper defined the TN and the multiple ADN connected to it as independent and interactive system of systems. Considering two-way interaction between distribution network(DN) and the EH with random fuzzy wind power, the interaction state between ADN and TN was obtained. Further considering TN of large-scale wind power access and three-phase unbalance of DN’s load, A global random fuzzy power flow SoS model for interaction between multi-energy coupling three-phase unbalanced ADN with wind power and EH and TN was established. Finally, a parallel solution algorithm based on random fuzzy simulation, interaction state of transmission and distribution, Back/Forward sweep method and NewtonRaphson method was proposed. The simulation results of the improved IEEE39-bus TN and IEEE33-bus DN show that the proposed method is correct and effective.