Abstract—Nowadays, Photovoltaic-PV Farms/ Parks and large PV-Smart Grid Interface Schemes are emerging and commonly utilized in Renewable Energy distributed generation. However, PV- hybrid-Dc-Ac Schemes using interface power electronic converters usually has negative impact on power quality and stabilization of modern electrical network under load excursions and network fault conditions in smart grid. Consequently, robust FACTS based interface schemes are required to ensure efficient energy utilization and stabilization of bus voltages as well as limiting switching/fault onrush current condition. FACTS devices are also used in smart grid- Battery Interface and Storage Schemes with PV-Battery Storage hybrid systems as an elegant alternative to renewable energy utilization with backup battery storage for electric utility energy and demand side management to provide needed energy and power capacity under heavy load conditions. The paper presents a robust interface PV-Li-Ion Battery Storage Interface Scheme for Distribution/Utilization Low Voltage Interface using FACTS stabilization enhancement and dynamic maximum PV power tracking controllers. Digital simulation and validation of the proposed scheme is done using MATLAB/Simulink software environment for Low Voltage- Distribution/Utilization system feeding a hybrid Linear-Motorized inrush and nonlinear type loads from a DC-AC Interface VSC-6- pulse Inverter Fed from the PV Park/Farm with a back-up Li-Ion Storage Battery. Keywords—AC FACTS, Smart grid, Stabilization, PV-Battery Storage, Switched Filter-Compensation (SFC). I. INTRODUCTION URING the last two decades, renewable energy generation and utilization gained momentum and acceptance for sustainable and environmentally friendly green energy drive and interface to smart grid electrical networks. Hybrid AC-DC interface schemes of distributed generation and integration within the smart power grid can enhance Ac system security, reliability and provide effective energy management and stabilization of the AC system with improved stability and stabilization under different fault conditions. Modern smart grid dynamic will comprises green renewable energy and distributed generation as well as FACTS stabilization and filtering devices to alleviate severe voltage instability, boost voltage regulation, and improve power factor andenergy efficient utilization using switched/modulated FACTS based devices and flexible dynamic control systems are fully utilized [1], [2]. Therefore, the switched/modulated Foad H. Gandoman is with the Electrical Machine Lab, Department of Computer and Electrical Engineering, University of Kurdistan, Iran (corresponding author to provide phone: (+98)871 33713186 fax: (+98)871 33668513; e-mail: f.haidari.elect@gmail.com). Adel M. Sharaf is with the Sharaf Energy Systems, Incorporated, 147 Berkley Drive, Fredericton, NB, E3C2P2, Canada(e-mail: profdramsharaf@gmail.com). filter compensation FACTS schemes simplify the concept of FACTS fast stabilization using low cost devices and dynamic/flexible control strategies to improve security and system stabilization of smart grid networks supplied by renewable wind and small hydro energy sources [3]-[6]. In this paper a new switched filter compensator (SFC) scheme is validated using dynamic controller for stabilization and enhancement of AC networks under fault and load variations as well as changes in PV Insolation and Junction temperatures. The low cost filter scheme utilized a dual IGBT/GTO switchthat controlled by dynamic error driven control strategies using a multi-loop dynamic error driven coordinated dual regulation control scheme and a weighted– modified fast acting PID controller with additional error squared and rate adjusting supplementary loops to improve fast response. This paper is organized as follows. Following this introduction, The FACTS scheme is described in Section II. Case study is explained in Section III. The controllers are presented in Part IV.Finally, SectionsV and VI present the Matlab/Simulink digital simulation results under open and short circuit conditions and conclusions, respectively II. THE FACTS SCHEME The proposed FACTS filter and compensation device is a member of a family of modulated switched/modulated power filters and switched capacitor compensators [7]-[13]. It is a low cost hybrid switched/ modulated power filter which comprises a shunt and series filters to mitigate harmonic and reduce total harmonic distortion as well as improve power quality and power factor using a switched shunt capacitor bank and two series connected fixed- capacitor banks connected to the AC side of a one-arm uncontrolled rectifier. In addition, a tuned arm filter is connected to the ground of system. Fig. 1 New Switched filter SFC scheme FACTS Based Stabilization for Smart Grid Applications Adel M. Sharaf, Foad H. Gandoman D World Academy of Science, Engineering and Technology International Journal of Electrical, Computer, Electronics and Communication Engineering Vol:8 No:11, 2014 1671 International Scholarly and Scientific Research & Innovation 8(11) 2014 International Science Index Vol:8, No:11, 2014 waset.org/Publication/10000266