International Journal of Advanced Technology and Engineering Exploration, Vol 8(75) ISSN (Print): 2394-5443 ISSN (Online): 2394-7454 http://dx.doi.org/10.19101/IJATEE.2020.762168 352 Modeling of an isolated microgrid with hybrid PV-BESS system for peak load shaving simulation Md Masud Rana * , Mohd Fakhizan Romlie, Mohd Faris Abdullah, Moslem Uddin and Mohammad Obaidur Rahman Center for Smart Grid Energy Research (CSMER), Electrical and Electronics Engineering Department, Universiti Teknologi PETRONAS, 32610, Bandar Seri Iskandar, Perak, Malaysia Received: 22-September-2020; Revised: 11-February-2021; Accepted: 14-February-2021 ©2021 Md Masud Rana et al. This is an open access article distributed under the Creative Commons Attribution (CC BY) License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 1.Introduction                                                            environment, distributed energy resources (DER) are introduced increasingly [7, 8]. Besides, the shortage of fossi                           For the IMG system, the power generation from renewable energy sources like PV, hydro-energy, geothermal energy is becoming            -scale IMG system, PV, BESS, conventional generator, different types of switches, inverter, converter, circuit breaker, transformer etc. are connected which can make the system complex and bulky. *Author for correspondence So, this type of IMG system requires proper control techniques for reliable and stable operation. The control techniques of an IMG system can be found in [15]. IMG is an essential part of the power system, but in existing literature, very few approaches have been identified to improve its operation [16]. For proper operation and control of the system under peak load shaving application, proper IMG system design is the primary requirement. In this paper, we are going to show an appropriate IMG design for peak shaving service with hybrid PV-BESS system. The system has been designed in MATLAB/Simulink environment. The complete system has four different significant components; PV, BESS, time varying load, and GTG. Every component has been designed separately, and after that, they are sandwiched together to form a complete system. The outcomes of the system have been found from the simulation, and it shows that the model is highly appropriate for the IMG system for peak shaving service. The results exhibit the potentiality of the system. Research Article Abstract In this paper, a simplified model of an isolated microgrid (IMG) with hybrid photovoltaic (PV)-battery energy storage system (BESS) is discussed. The concept of peak load shaving is also demonstrated. The developed model helps an isolated power system to minimize the demand and maximize the economic benefit. MATLAB/Simulink tool was used to simulate the electrical circuit of the IMG system. The IMG model contains four sub-systems, namely the PV model, time varying load profile model, BESS model and gas turbine generator (GTG) dispatch model. To evaluate the performance of the developed IMG, a simulation case study was conducted under realistic load conditions of Universiti Teknologi PETRONAS (UTP). Results indicated that simulation illustrates the precise situation of the real-time system, as found in the UTP microgrid. Results also revealed that the concept of peak load shaving broadly illustrated in this study. The implementation of the proposed IMG model may bring economic benefit by minimizing peak load demand. Keywords Isolated microgrid system, Photovoltaic, Battery energy storage system, Peak load shaving, Hybrid system modelling.