Measurement Setup Based on Zynq SoC FPGA for Real Time Monitoring of Grid System Parameters

Abstract

The present-day grid is dynamic with bidirectional power flow because of the integration of Distributed Generation Units with conventional power generation units. Because of the grid dynamics and complexity, real-time monitoring of the grid system parameters is a major challenge. Conventional phasor measurement units (PMU) based on Fast Fourier Transform (FFT) do not give an accurate estimate of grid parameters under dynamic varying conditions. This paper proposes a System-on-Chip compact framework for real-time monitoring of various grid parameters. The designed unit is adaptive and hence suited for dynamically varying conditions. Also, as the monitoring algorithm is implemented on SoC hardware, it gives real-time performance. The response time is slightly greater than three-fourth of a cycle, while measurement delay is less than three-fourth of a cycle. The Total Vector Error of the designed system is less than 1% during measurements and hence the unit conforms with M class requirements of the IEEE standard on synchrophasor measurements. The monitoring unit occupies less than 45% of the programmable fabric of the SoC FPGA and is power efficient. It can adapt to any grid voltage and current levels and can be used in real-time SoC PMU.

Keywords:

• Frequency error
• power and resource optimized phasor measurement unit
• PQ disturbance generator
• real-time monitoring
• SoC FPGA
• Total vector error
• Wavelet-based data compression

Additional information

Notes on contributors

Sangeeta L. Mahaddalkar

Sangeeta L Mahaddalkar obtained her BE in electrical engineering in 1994 and ME in microelectronics in 2010 from Goa University. She is currently an associate professor in the Department of Electrical and Electronics Engineering, Goa College of Engineering, and has more than 25 years of teaching experience. Her research interests include power quality, embedded systems, VLSI circuit design, robotics, and image processing. She is pursuing her research in the area of power quality. She was felicitated by IIT Bombay for being amongst the top-performing teams in the Robotic Task Based Training Challenge organized under the E-Yantra programme.

Vinayak N. Shet

Vinayak N Shet received his BE, MTech, and PhD in electrical engineering, power electronics and power system and electrical engineering from Karnataka University, IIT Bombay, IIT Bombay, India in 1984, 1995, and 2002, respectively. He is currently working as professor in Department of Electrical & Electronics at Goa College of Engineering. He worked as lecturer, assistant professor, professor & HOD, and then as principal of Goa College of Engineering during 1986–1995, 1995–2003, 2003–2014 and 2014–2018, respectively. He is the chief investigator for Information Security Education and Awareness under the Department of Information Technology, Ministry of Electronics and Communication, Government of India. He is actively involved as a reviewer for various journals and conferences. He has published a number of papers in various international journals and conferences. He has been awarded patents based on his research work. His area of interest is power factor correction, switch mode converter, power quality mitigation, and grid-connected systems. Email: [email protected]