Effects of Phasor Measurement Uncertainty on Power Line Outage Detection

Journal Article · Mon Dec 01 04:00:00 EST 2014 · IEEE Journal of Selected Topics in Signal Processing

DOI:https://doi.org/10.1109/JSTSP.2014.2333493· OSTI ID:1393476

Chen, Chen; Wang, Jianhui; Zhu, Hao

Phasor measurement unit (PMU) technology provides an effective tool to enhance the wide-area monitoring systems (WAMSs) in power grids. Although extensive studies have been conducted to develop several PMU applications in power systems (e.g., state estimation, oscillation detection and control, voltage stability analysis, and line outage detection), the uncertainty aspects of PMUs have not been adequately investigated. This paper focuses on quantifying the impact of PMU uncertainty on power line outage detection and identification, in which a limited number of PMUs installed at a subset of buses are utilized to detect and identify the line outage events. Specifically, the line outage detection problem is formulated as a multi-hypothesis test, and a general Bayesian criterion is used for the detection procedure, in which the PMU uncertainty is analytically characterized. We further apply the minimum detection error criterion for the multi-hypothesis test and derive the expected detection error probability in terms of PMU uncertainty. The framework proposed provides fundamental guidance for quantifying the effects of PMU uncertainty on power line outage detection. Case studies are provided to validate our analysis and show how PMU uncertainty influences power line outage detection.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: USDOE Office of Electricity Delivery and Energy Reliability
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 1393476
• Journal Information: IEEE Journal of Selected Topics in Signal Processing, Journal Name: IEEE Journal of Selected Topics in Signal Processing Journal Issue: 6 Vol. 8; ISSN 1932-4553
• Publisher: IEEE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION