电力现货市场下的输配协同缓解阻塞模型与求解

Transmission and Distribution Cooperative Congestion Mitigation Model and Solution in Power Spot Market

电力现货市场中需协调调度输电网中可控资源实现对传输阻塞的缓解。考虑配电网中含有大量分布式电源以及可响应负荷,提出了以配电网公司作为主体参与电力现货市场阻塞管理的双层优化调度模型。输电网层以阻塞调度成本最小为目标,对各配电网公司的可控负荷和常规机组协同调度。配电网层以配电网电压波动和用户响应满意度为目标,在满足配电网安全约束的前提下,对配电网中资源进行协同调度。采用ATC算法对上下层模型进行求解,获取最优调度策略。最后对IEEE9节点的输电网和改进的两个配电网组成的输配全局电网进行仿真,验证所提方法的有效性。

Transmission congestion management in the power spot market requires coordination of controllable resources in transmission grid. Considering that there are a large number of distributed power sources and responsive loads in the distribution network, we proposed a two-tier optimal dispatching model that takes distribution company as the main body to participate in power spot market congestion management. The transmission grid layer aims at minimizing the cost of congestion dispatch, and coordinately optimizing the responsive load of each distribution network and conventional units. The distribution network layer aims at the distribution network voltage fluctuations and user response satisfaction, and under the premise of meeting the safety constraints of distribution network, the coordinated dispatch of resources in the distribution network. The ATC algorithm was used to interactively iterate the upper and lower models to realize the economic utilization of the overall resources of transmission and distribution. Finally, the IEEE9-node transmission grid and improved 15-node and 18-node distribution network were simulated to verify the effectiveness of the proposed method.