Online Calibration of Voltage Transformers Using Synchrophasor Measurements

Anamitra Pal, Paroma Chatterjee, James S. Thorp, Virgilio A. Centeno

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


Uncalibrated instrument transformers present at the inputs of phasor measurement units (PMUs) can significantly degrade their outputs. This also causes problems in downstream applications that use PMU data. This paper presents a method for calibrating voltage transformers online using synchrophasor measurements. The proposed approach aims to find the optimal locations where good quality measurements must be added in order to bring the calibration error of all the measurements below a predefined threshold. The IEEE 118-bus system, the IEEE 300-bus system, and a 2383-bus Polish system have been used as the test systems for this analysis. The advantage of the proposed approach is its effectiveness and robustness.

Original languageEnglish (US)
Article number7307200
Pages (from-to)370-380
Number of pages11
JournalIEEE Transactions on Power Delivery
Issue number1
StatePublished - Feb 2016
Externally publishedYes


  • Binary integer programming (BIP)
  • calibration
  • optimal placement
  • phasor measurement units (PMUs)
  • voltage transformers

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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