Impact of Measurement Error on Synchrophasor Applications

Technical Report · Wed Jul 01 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1212367· OSTI ID:1212367

Liu, Yilu ^[1]; Gracia, Jose R. ^[2]; Ewing, Paul D. ^[2]; Zhao, Jiecheng ^[3]; Tan, Jin ^[3]; Wu, Ling ^[3]; Zhan, Lingwei ^[3]

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1. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
3. Univ. of Tennessee, Knoxville, TN (United States)

Phasor measurement units (PMUs), a type of synchrophasor, are powerful diagnostic tools that can help avert catastrophic failures in the power grid. Because of this, PMU measurement errors are particularly worrisome. This report examines the internal and external factors contributing to PMU phase angle and frequency measurement errors and gives a reasonable explanation for them. It also analyzes the impact of those measurement errors on several synchrophasor applications: event location detection, oscillation detection, islanding detection, and dynamic line rating. The primary finding is that dynamic line rating is more likely to be influenced by measurement error. Other findings include the possibility of reporting nonoscillatory activity as an oscillation as the result of error, failing to detect oscillations submerged by error, and the unlikely impact of error on event location and islanding detection.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1212367
• Report Number(s): ORNL/TM-2015/314; TE1101000; CETE004
• Country of Publication: United States
• Language: English