Impact of synchrophasor measurement types and uncertainties on the accuracy of distribution system linear state estimators

The paper aims at assessing the effects of combined voltage and/or current synchrophasor measurements, and their associated uncertainties, on the accuracy of state estimators adopted in distribution systems. Such an assessment is first carried out with respect to a generic transmission line with the purpose of determining the combination of voltage and/or current synchrophasor measurements that provides the best accuracy of the estimated quantities. A comprehensive analysis on the impact of different measurement uncertainties and operating conditions is included for this specific case. In order to derive general conclusions, the study is then extended to a distribution system composed of the IEEE 13-bus test feeder. For this case, we perform an a-posteriori assessment of the probability distributions of the estimation errors by using a discrete Kalman filter state estimator fed with noisy voltage and/or injected current synchrophasor measurements.

Published in:
Proc. of the 2015 IEEE PES Eindhoven PowerTech, 1, 1-6
Presented at:
2015 IEEE PES Eindhoven PowerTech, Eindhoven, The Netherlands, 29 June - 2 July, 2015
Eindhoven, IEEE

 Record created 2015-12-04, last modified 2019-12-05

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