Frequency regulation of an isolated hybrid power system with Battery energy storage system

Author

Singh, Sushil ; Singh, S.K. ; Chanana, Saurabh ; Singh, Y. Premkumar

Author_Institution

Electr. & Electron. Eng. Dept., Graphic Era Univ., Dehradun, India

fYear

2014

fDate

13-15 March 2014

Firstpage

1

Lastpage

6

Abstract

This paper presents operation and control of a hybrid Photovoltiac Power, Diesel-Engine Generator (DEG) - Battery energy storage system (BESS) connected to an isolated power system. A case study on the impact of BESS operations on the frequency stability of the hybrid system has been carried out. The limits on state of charge (SOC) due to limited storage capacity have also been incorporated. Simulation of a hybrid system model has been carried out in two cases, steady state analysis of hybrid system using step load response with PI controller and other real time performance analysis for a typical day with random variation in load demand. Parameters of controllers are optimized with Genetic Algorithm. Simulation of a hybrid system model is done with the Matlab/Simulink environment. Simulation results indicate that BESS system can contribute to frequency stability in both cases when the load increases and when the load drops. This feature of BESS system will be helpful if it is operated along with a hybrid Wind-PV System.

Keywords

PI control; battery storage plants; diesel engines; diesel-electric generators; frequency control; frequency stability; genetic algorithms; hybrid power systems; photovoltaic power systems; BESS operations; DEG; PI controller; SOC; battery energy storage system; diesel-engine generator; frequency regulation; frequency stability; genetic algorithm; hybrid photovoltiac power; hybrid system model; hybrid wind-PV system; isolated hybrid power system; load demand; state of charge; Analytical models; Software packages; System-on-chip; Battery Energy Storage System (BESS); Diesel Engine Generator (DEG); Distributed Generation (DG); Photovoltiac; Renewable energy; State of charge (SOC);

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Systems Conference: Towards Sustainable Energy, 2014

Conference_Location

Bangalore

Print_ISBN

978-1-4799-3420-1

Type

conf

DOI

10.1109/PESTSE.2014.6805286

Filename

6805286