Dynamic Active Set Algorithm for Real-Time Energy-Reserve Optimal Dispatch in Multi-Zonal Power System

Network congestion and grid faults lead to the reserve deliverability problem. To ensure the reserve effectiveness and network security for multi-zonal power system, zonal reserve requirements and new algorithm are proposed in real-time optimal dispatching. The reserve capacity demand for both island and receiving-end in multi-zonal power systems is analyzed, and a real-time energy-reserve optimal dispatch model is developed to minimize the cost of energy and reserve, including systematic reserve requirements, zonal reserve requirements and N-1 security constraints. The model is a supper-large scale programming, so the method of dynamic active set is introduced to power system optimal dispatching problem to solve the proposed model iteratively. Moreover, numerical tests are performed based on the IEEE 118-bus test system and a real-life receiving-end power system in China. The results show that the computing period can meet the real-time dispatch interval need, and the real-time energy-reserve scheduling as well as the responsive reserve dispatch after N-1 outage are available, which verifies the rationality and feasibility of the proposed model.