Electric Power Network Splitting Considering Frequency Dynamics and Transmission Overloading Constraints

This chapter assesses the risk level presented by an electrical power system (EPS) during a specific static or dynamic operating condition regarding the occurrence of cascading events. Through the development and integration of novel algorithms and procedures for graph partitioning and frequency behavior estimation, the chapter presents a new approach for power system islanding. When vulnerability assessment points out that the power system is on the verge of collapse, the islanding process is started: grouping of generation and load buses; power network splitting; and frequency control. The chapter introduces a new methodology to solve the power network splitting problem considering dynamic frequency behavior and overloading limits of transmission facilities. The real‐time generator coherency information is used as input to the proposed network splitting mechanism. The chapter shows the active power imbalance evolution through each stage of the network splitting mechanism.