Implementation of Micro Phasor Measurement Unit (μPMU) Using Embedded System and IEEE 1588
Date Issued
2015
Date
2015
Author(s)
Liang, Chung-Ming
Abstract
Synchronous phasor measurement units (PMUs) are data acquisition devices utilized in wide-area monitoring systems (WAMS). They are installed at selected buses, sampling three-phase voltage and three-phase current to calculate the phasor. The capability of receiving Global Positioning System (GPS) signals such as time tag and 1- pulse-per-second signal synchronizes phasor data collected all over the power grid. Synchrophasors in real-time applications are used to monitor the status of the power system so as to, when fault occurs, enable operators to take proper measures as soon as possible. In non-real-time applications, researchers analyze these data to find the cause of the event in the hope of preventing similar events from reoccurring. Nevertheless, if failing to receive correct GPS signals in any case, PMUs are not able to be synchronized, and the acquired data are rendered valueless. Moreover, equip every PMU with GPS signal receiver will raise the cost. Hence, this research uses IEEE 1588 to achieve synchronization with cheaper computer network system, and has higher reliability than the ones depending on GPS systems.
Subjects
Wide-area monitoring system
Embedded system
Synchrophasor measurement
Type
thesis
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ntu-104-R02921024-1.pdf
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