A Novel Handling Method to Intermittent Feedback in Load Frequency Regulation for Renewable Energy-Dominated Microgrids
Zhijian Hu, Qingyang Li, Pu Zhang, Ruiping Wang, Kai Zhang
Abstract
Traditional thermal-based microgrids are transforming toward distributed renewable energy sources (DRESs) dominated microgrids, aiming at promoting sustainable environment and economy. This work thus incorporates two popular DRESs [i.e., wind turbines and plug-in electric vehicles (PEVs)] in the thermal-based power plants. Considering the inevitable sensor failures caused by hostile outdoor environment and the communication failures caused by resource constraints, this article proposes a novel handling method to intermittent feedback in load frequency control (LFC) for microgrids. Furthermore, to deal with the fluctuations of power outputs from DRESs, this article incorporates the robust performance index into the control law derivation. By taking into account such intermittent feedback and robust performance index, the operation of microgrid system can better realize resiliency enhancement. Validation results demonstrate the feasibility of this novel handling method under different degrees of intermittent feedback.