Maiden Application of Fuzzy-2DOFTID Controller in Unified Voltage-Frequency Control of Power System

Abstract

This article presents an amalgamated pattern of automatic load frequency control (ALFC) and automatic voltage regulator (AVR) system in a three-area interconnected power system using the Fuzzy two-degree-of-freedom tilt-integral-derivative controller (F2DOFTID). The multi-area system includes single-stage reheat thermal plants and Solar Thermal Power Plant (STPP) in Area-1 and Heavy-Duty Gas Turbines (HDGT) in Area-2 and Area-3. An incipient attempt is made to incorporate the HDGT plant in amalgamated control of the power system. Relevant generation rate constraints (GRC) and Governor Dead Band (GDB) are rendered for thermal plants. In both ALFC and AVR systems of all areas, a first attempt is made to implement an F2DOFTID controller to alleviate the frequency and voltage deviations. In this investigation, an algorithm named Harris Hawks Optimization (HHO) is efficaciously used to accomplish optimal controller parameters. Concerning all time-domain behaviors, F2DOFTID controller performance is superior relative to the TID and 2DOFTID controller. The AVR effect proclaims a substantial improvement in system dynamics. In this amalgamated scenario, the aftermath of the high voltage direct current (HVDC) tie-line and the usage of energy storage devices such as ultra-capacitors (UC) are found superlative in the amelioration of system performance. Similarly, by modifying the generator parameters and synchronizing coefficients, the robustness of the proposed controller is measured, which signifies that obtained controller parameters during nominal conditions are resilient enough and not to be altered. Eventually, the system is also studied in OPAL-RT OP 4510 RT Lab hardware set-up for real-time analysis.

KEYWORDS:

• Automatic load frequency control
• Automatic voltage regulator
• Fuzzy logic controller
• Harris Hawks optimization
• Heavy-duty gas turbine
• Solar thermal power plant
• Two-degree-of-freedom tilt-integral-derivative
• Ultracapacitor

Additional information

Notes on contributors

Satish Kumar Ramoji

Satish Kumar Ramoji received his BTech degree in electrical and electronics engineering from National Institute of Science and Technology (NIST), Berhampur, affiliated to Biju Patnaik University of Technology, Rourkela, Odisha in 2008 and Master of Technology from JNTU, Kakinada, Andhra Pradesh in 2014. He is presently working as a full-time PhD scholar at the National Institute of Technology (NIT) Silchar, Assam India, since 2018. His current research interests include power systems, and automatic generation control, combined cycle energy systems, and renewable energies.

Lalit Chandra Saikia

Lalit Chandra Saikia was born in Assam, India, received his BE from Dibrugarh University, Assam, in 1993. Dr Saikia Joined North Eastern Drilling & Workover Services Company (PVT) Ltd, Digboi, Assam, in December 1992 as an electrical engineer. In December 1993, he joined as a rig electrical engineer in ONGCL RECAPICOL, Sibasagar, Assam, and worked till 1997. He started his teaching career as lecturer (Part-Time) at Jorhat Engineering College, Jorhat, Assam, in 1997. In 2000, Dr Saikia joined as a lecturer in Electrical Engineering Department, NIT Silchar. He received his MTech degree in power systems from the Indian Institute of Technology (IIT), Delhi, in 2007. He received PhD degree in electrical engineering from the National Institute of Technology (NIT) Silchar, Assam, in April 2012. He is currently an associate professor of electrical engineering, NIT, Silchar, Assam, India. He works in power systems, soft computing application in power systems, power quality, power system control, and operation. Email: [email protected]