Modeling and Control of Distrubuted Power Network by Application the Flatness Control in the Smart Grid

Abstract

In the Internet of Things (IoT) scenario, smart grids and more particularly micro grids bring more intelligence and innovation to the historic and established power grid. This paper focuses on the design of a renewable-energy hybrid power plant that is fed by a photovoltaic (PV) source with Battery (BAT) storage device and is suitable for distributed generation applications. The PV array is used as the main generator, and the BAT functions as an auxiliary source for supplying the (transient and steady-state) power deficiency of the PV array. For highpower applications, parallel boost converters and parallel bidirectional converters are implemented as a PV converter and a storage device, respectively. A reduced-order mathematical model of the PV and BAT converters is described for the control of the power plant. Using a nonlinear approach based on the flatness property, we propose a simple solution to the dynamic, stabilization, and robustness problems in the hybrid power system. This is the key innovative contribution of this research paper. The system scenarios will be highlighted through a mathematical modeling that will be validated by a numerical simulation under MATLAB / SIMULINK software.

Keywords: IoT (connected Objects), Smart Grid (SG), Quality off service (QoS), flatness property