Abstract
The first task of parallel power system restoration is to develop an efficient partitioning strategy. This paper applies the virus propagation model that considers the physical and topological properties of power systems to propose a novel partitioning method. Firstly, different blackstart units are defined as various types of viruses. The infection rate of buses can be calculated according to the importance of each bus in the power system. An immune strategy is then developed based on the buses at which faulted devices are damaged in the blackout. Considering key constraints on partitioning, viruses propagate among buses except for the faulted buses. Finally, the buses infected by the same type of viruses are divided into the same subsystem. Case studies on the IEEE 39-bus test system verified the effectiveness of the proposed partitioning method.
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