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Chapter 7
Role of microphasor
measurement unit for decision
making based on enhanced
situational awareness of a
modern distribution system
1
1
Soham Dutta , Pradip Kumar Sadhu , Maddikara Jaya Bharata Reddy 2
and Dusmanta Kumar Mohanta 3
1
Department of Electrical Engineering, Indian Institute of Technology (Indian School of Mines),
2
Dhanbad, Jharkhand, India, Department of Electrical and Electronics Engineering, National
3
Institute of Technology, Tiruchirapalli, Tamil Nadu, India, Department of Electrical and
Electronics Engineering, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, India
7.1 Introduction
Phasor measurement unit (PMU) has been a great success in power transmis-
sion system. It enhanced the wide-area situational awareness of the transmis-
sion system by providing accurate phasor measurements [1]. The furnished
PMU data is time stamped with an accuracy of a microsecond. Today, most
countries have thousands of PMU deployed across the transmission grid to
obtain a wide dynamic snapshot of the transmission system.
Earlier, the traditional distribution system used to follow a radial topology.
The power used to flow from high-voltage to low-voltage grid, and this flow
was always unidirectional. Hence, the design considerations of the distribu-
tions system were confined to peak loads and fault current level. It was not
necessary to continually observe the distribution system operation. The rapid
development in the renewable energy sector contributed to the advancement
of renewable distributed generation (DG) [2]. The introduction of deregula-
tion market and net energy metering concept further motivated independent
power production [3 5]. Therefore several renewable as well as nonrenew-
able DG started to evolve in the distribution system. Due to this, the distribu-
tion system saw a paradigm change. Instead of being passive, it became
Decision Making Applications in Modern Power Systems. DOI: https://doi.org/10.1016/B978-0-12-816445-7.00007-4
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