Reliability Evaluation of Phasor Measurement Unit: A System of Systems Approach

Abstract

The phasor measurement unit has emerged as a complex, real-time measurement and control system necessitated by the modern power system, the most complex machinery. The extensive installation of phasor measurement units in recent times requires secure and reliable operation. The existing reliability models for phasor measurement unit reliability analysis are constrained by assumptions that disregard the inherent complexity, thus calling for the necessity of a system of systems engineering based reliability model for phasor measurement units. Such a system of systems engineering based model paves the way to accommodate different functional and logical relationships in a suitable way. Another major contribution of this article is the use of statistics of extremes to take into account the scarce failure data for phasor measurement units, which are recent in origin. The results reported in this article validate the efficacy of the system of systems engineering based reliability model.

Keywords:

• system of systems engineering
• synchronous data acquisition system
• synchronous data processing system
• phasor measurement unit
• wide-area measurement systems
• global positioning system
• Monte Carlo simulation
• statistics of extremes
• Gumbel distribution

Additional information

Notes on contributors

Cherukuri Murthy

Cherukuri Murthy was born in India. He received his B.Tech (electrical) degree from Jawaharlal Nehru Technological University, Kakinada, India, and his M.E. in power systems from Birla Institute of Technology, Ranchi, India, in 2007 and 2010, respectively. Currently he is an assistant professor in the Department of Electrical and Electronics Engineering, National Institute of Science and Technology, Berhampur, India. His current research interests include power system reliability and synchrophasor measurements.

Diptendu Sinha Roy

Diptendu Sinha Roy was born in India. He received his B.Tech in electronics and communication engineering from Kalyani University in West Bengal. He received his M.Tech in computer science and his Ph.D. Engg. from the Birla Institute of Technology, Ranchi, India. Currently, he is an associate professor in the Department of Computer Science and Engineering at the National Institute of Science and Technology, Berhampur, India. His current research interests include sofware reliability, the smart grid, and grid computing.

Dusmanta Kumar Mohanta

Dusmanta Kumar Mohanta was born in India. He received his B.Sc. Engg. (electrical) from the College of Engineering and Technology, Bhubaneswar, India; his M.E. from Birla Institute of Technology, Ranchi, India; and his Ph. D. (Engg.) from Jadavpur University, Kolkata, India. He is an IEEE senior member. He was an electrical engineer in the Captive Power Plant of the National Aluminium Company (NALCO), Angul, India. He is an editor of the Electric Power Components and Systems journal. His current research interests include the smart grid, power system reliability analysis, and synchrophasor measurements.