Synchrophasor Broadcast Over Internet Protocol for Distributed Generator Synchronization

Synchronous islanded operation involves continuously holding an islanded power network in virtual synchronism with the main power system to aid paralleling and avoid potentially damaging out-of-synchronism reclosure. This requires phase control of the generators in the island and the transmission of...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2010-10, Vol.25 (4), p.2835-2841
Main Authors: Best, Robert J, Morrow, D John, Laverty, David M, Crossley, Peter A
Format: Article
Language:English
Subjects:
Applied sciences
Broadband communication
Broadcasting
Delay
diesel-driven generators
distributed generation
Distributed power generation
Disturbances. Regulation. Protection
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Exact sciences and technology
Generators
Global Positioning System
Internet
IP (Internet Protocol)
IP networks
latency
Miscellaneous
Networks
Operation. Load control. Reliability
Phase control
phasor measurement unit (PMU)
Phasors
Power generation
Power networks and lines
power system islanding
Power system measurements
Protocols
real-time control
Reference signals
Regulation and control
Satellite navigation systems
Synchronism
synchronization control
Synchronous generators
synchrophasors
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Description
Summary:Synchronous islanded operation involves continuously holding an islanded power network in virtual synchronism with the main power system to aid paralleling and avoid potentially damaging out-of-synchronism reclosure. This requires phase control of the generators in the island and the transmission of a reference signal from a secure location on the main power system. Global positioning system (GPS) time-synchronized phasor measurements transmitted via an Internet protocol (IP) are used for the reference signal. However, while offering low cost and a readily available solution for distribution networks, IP communications have variable latency and are susceptible to packet loss, which can make time-critical control applications difficult. This paper investigates the ability of the phase-control system to tolerate communications latency. Phasor measurement conditioning algorithms that can tolerate latency are used in the phase-control loop of a 50-kVA diesel generator.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2010.2044666