Parallel PI/CDM Frequency Controller to Support V2G Plan for Microgrid

Smart Grid construction within conventional network is a step to digitalize and optimize the present grid. However, smart grid itself should be a part of the solution rather than being a new burden. According to this research, Electric Vehicles (EV) in the form of Vehicle-to-Grid (V2G) can play their own role for frequency control in an isolated power system. On the other hand, Microgrids mostly use Renewable Energy Systems (RES) in electrical power production that are naturally fluctuating, in a time there are increasing trends to install the controllable loads such as Heat Pumps (HPs) and V2Gs. On the other hand, operating manners and uncertainties in power systems cause the classic controllers to be unable to provide a proper performance over a wide range of operating conditions. In order to overcome such issues, this paper addresses a control scheme approach using Coefficient Diagram Method (CDM) technique to enhance the system validity and robustness against uncertainties. The proposed scheme suggests a parallel connection of CDM and PI controllers in which the performance has been compared with only conventional controller showing that the proposed scheme has superior validity. Different operation schemes have been simulated showing the flexibility of V2G utilization in the modern power system.