Identifying Unique Power System Signatures for Determining Vulnerability of Critical Power System Assets

Malhar Padhee, Reetam Sen Biswas, Anamitra Pal, Kaustav Basu, Arunabha Sen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


In this paper, the finer granularity of phasor measurement unit (PMU) data is exploited to develop a data-driven ap- proach for accurate health assessment of large power trans- formers(LPTs). There research demonstrates how variations in signal-to-noiseratios (SNRs) of PMU measurements can be used as a reliable metric for health assessment. However, a single PMU device maybe affected by multiple equipment located in its neighborhood. To address the challenge of identifying the equipment that is primarily responsible for the degradation inquality of the PMU measurements,an in- telligent sensor selection scheme is proposed,which ensures that every critical equipment is associated with a unique identifying signature. The proposed algorithm is based on a real LPT failure event that occurred in the US Southwest. The inferences drawn from the proposed PMU-based health monitoring scheme can be easily supplemented with other LPT sensors to facilitate proactive intervention before the point-of-no-return is reached.

Original languageEnglish (US)
Pages (from-to)8-11
Number of pages4
JournalPerformance Evaluation Review
Issue number4
StatePublished - Apr 30 2020


  • asset health monitoring
  • discriminating code
  • phasor mea- surement unit (pmu)
  • power transformers
  • signal-to-noise ratio (snr)

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications


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