The consideration of a flexible network topology has been previously shown to produce significant benefits to power system operation. In this paper, we study the effects of considering smart transmission switching actions to unlock flexible generation resources from the network. More specifically, we consider a smart network capable of performing both preventive and real-time corrective topology changes in response to the occurrence of contingencies. The proposed economic dispatch model ensures the co-optimization of energy and reserves with pre- and post-contingency transmission switching actions, thus producing the optimal policy with transmission flexibility. An exact decomposition methodology based on the nested column-and-constraint generation algorithm is devised to address the challenging mixed-integer program arising from the proposed formulation. Numerical simulations show that the incorporation of corrective transmission switching in the optimization process offers significant benefits to system reliability and substantial cost savings.

先前已经证明，考虑使用灵活的网络拓扑可以为电力系统的运行带来巨大的好处。在本文中，我们研究了考虑智能传输切换操作以从网络解锁灵活的发电资源的影响。更具体地说，我们考虑一种能够响应突发事件而执行预防性和实时纠正性拓扑更改的智能网络。所提出的经济调度模型可确保在突发事件之前和之后的传输切换动作下共同优化能源和储备，从而产生具有传输灵活性的最优策略。设计了一种基于嵌套列和约束生成算法的精确分解方法，以解决由所提出的公式引起的具有挑战性的混合整数程序。数值模拟表明，在优化过程中并入纠正性变速箱开关可显着提高系统可靠性并节省大量成本。