Work place: Dayananda Sagar Academyn of Technology and Management, Bangalore, India
E-mail: brlakshmikantha@gmail.com
Website:
Research Interests: Computational Science and Engineering, Computational Engineering, Engineering
Biography
Dr. B.R. Lakshmikantha did his PhD from Visvesvaraya Technological University, Karnataka, India. He is working as Professor and Principal of Dayananda Sagar Academy of Technology and Management- Bangalore, India. He has more than 35 years of teaching experience He has published several research papers in reputed international journals. His main areas of interests are Power system Dynamics and Stability, Renewable energy sources and Distributed Generation.
By Harsha Anantwar B.R. Lakshmikantha Shanmukha Sundar
DOI: https://doi.org/10.5815/ijigsp.2019.01.04, Pub. Date: 8 Jan. 2019
This paper investigates the application of adaptive Bacteria Forging Algorithm (BFA) to design optimal controllers for voltage stability of off-grid hybrid power system (OGHPS).Voltage fluctuations will have great impact on the quality of power supply. Voltage rise/drop depends on the surplus / shortage of reactive power in the system, hence it has become extremely important to manage the reactive power balance for voltage control in the off-grid hybrid power system. The off -grid hybrid power system considered in this work as a test system, consist of an Induction generator (IG) for wind power systems, Photo-Voltaic (PV) system with inverter, Synchronous generator (SG) for diesel power generation and composite load. The Over-rated PV inverter has ample amount of reactive power capacity while sourcing PV real power. Two control structures are incorporated, to regulate system voltage. The first control structure is for the reactive power compensation of the system by inverter, by controlling the magnitude of inverter output voltage and the second control structure is for controlling the SG excitation by an automatic voltage regulator (AVR) and hence the load voltage. Both control structures have proportional-integral (PI) controller. Both control loops are coordinated by tuning their parameters optimally and simultaneously using an adaptive Bacterial forging optimization algorithm. Small signal model of all components of OGHPS is simulated in SIMULINK, tested for reactive load disturbance and /or wind power input disturbance of different magnitudes to investigate voltage stability.
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