Laboratory Implementation of Feedback Linearisation Controller for Independent Control of Real and Reactive Power with Unified Power Flow Controller

Abstract

This paper investigates the application of a multi-variable control technique to the multi-input multi-output (MIMO) non-linear problem of a power transmission system with a unified power flow controller (UPFC). The main objective is to achieve effective and independent control of real and reactive power flows. A two-bus power system with a UPFC has been built in laboratory and the feedback linearisation control scheme has been implemented using a DSP TMS320LF2407A. The proposed controller enables UPFC to independently control the real and reactive power with absolute decoupling. The simulation and experimental results establish the validity of the proposed scheme.

Key Words:

• Unified power flow controller
• laboratory implementation
• power transmission system
• feedback linearization
• non-linear control
• input-output linearization
• FACTS

Additional information

Notes on contributors

G.S. Ilango

G. Saravana Ilango graduated from Madras University, Chennai, India, in 2000. He received his Masters degree from Bharathithasan University Trichy, India, in 2001. From 2001 to 2004 he worked as a lecturer in Noorul Islam College of Engineering Kumaracoil, India. From 2004 to 2006 he was a full-time research scholar in the National Institute of Technology Trichy, India, and he has been working as a lecturer in the same institute from 2006. His preferred working areas are FACTS controllers, digital controllers and power quality.

C. Nagamani

Chilakapati Nagamani received her MTech and PhD. degrees from I.I.T., Kanpur, and the University of Technology, Sydney, respectively. From 1985 to 1991 she was with the Central Power Research Institute, Bangalore, India. Subsequently she joined the E.E.E. Department, National Institute of Technology (then known as Regional Engineering College), Tiruchirapalli, India, as a lecturer. At present, she is a professor in the same department. Her areas of interest include power electronics and drives, renewable energy systems, and FACTS controllers.

A.V.S.S.R. Sai

A. V. S. S. R. Sai graduated from Acharya Nagarjuna University, India, in 2005. He received his Masters degree from the National Institute of Technology, Trichy, India, in 2007. He is now working for ABB Global Services Limited, Indian Corporate Research Centre, Bangalore, India. His preferred working areas are FACTS controllers and power quality.