Enhanced Restoration in a Restructured Power System with Hydrogen Energy Storage and Unified Power Flow Controller

摘要

This paper proposes evaluation of Power System Restoration Indices (PSRI) based on the Automatic Generation Control (AGC) assessment of interconnected power system in a deregulated environment. This paper deals with the procedure involved in the AGC of a two-area reheat power system having a coordinated control action between Hydrogen Energy Storage (HES) unit and Unified Power Flow Controller (UPFC) for controlling the network performance in a very fast manner and to improve the power transfer limits in order to have a better restoration. In addition to that a new Proportional-Double Integral (PI~2) controller is designed and implemented in the AGC loop and the controller parameters are optimized through Bacterial Foraging Optimization (BFO) algorithm. Simulation results reveal that the proposed PI~2 controller ensures good stability during load variations, excellent transient and dynamic responses when compared with the system comprising PI controller. Moreover the AGC loop with HES coordinated with UPFC have greatly improve the dynamic response and it reduces the control input requirements and to ensure not only the improved PSRI but also to provide less the restoration time, thereby improving the system reliability.