State estimation and bad data processing for systems including PMU and SCADA measurements

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dc.contributor.author Korres, GN en
dc.contributor.author Manousakis, NM en
dc.date.accessioned 2014-03-01T01:37:07Z
dc.date.available 2014-03-01T01:37:07Z
dc.date.issued 2011 en
dc.identifier.issn 0378-7796 en
dc.identifier.uri http://hdl.handle.net/123456789/21454
dc.subject Bad data processing en
dc.subject Current phasor en
dc.subject Phasor measurement unit en
dc.subject State estimation en
dc.subject Voltage phasor en
dc.subject.classification Engineering, Electrical & Electronic en
dc.subject.other Bad data en
dc.subject.other Bad data processing en
dc.subject.other Bus voltage en
dc.subject.other Current phasor en
dc.subject.other Error amplification en
dc.subject.other Loaded lines en
dc.subject.other Network bus en
dc.subject.other Non-linear en
dc.subject.other Normalized residuals en
dc.subject.other Numerical problems en
dc.subject.other Phasor measurement unit en
dc.subject.other Phasor measurements en
dc.subject.other Polar coordinate en
dc.subject.other Reactive power flow en
dc.subject.other Real time measurements en
dc.subject.other Rectangular coordinates en
dc.subject.other SCADA measurements en
dc.subject.other State Estimators en
dc.subject.other Synchronized measurement en
dc.subject.other Voltage phasor en
dc.subject.other Voltage phasors en
dc.subject.other Weighted least-squares estimators en
dc.subject.other Data handling en
dc.subject.other Estimation en
dc.subject.other Phase measurement en
dc.subject.other Reactive power en
dc.subject.other Real time systems en
dc.subject.other SCADA systems en
dc.subject.other State estimation en
dc.subject.other Units of measurement en
dc.subject.other Measurements en
dc.title State estimation and bad data processing for systems including PMU and SCADA measurements en
heal.type journalArticle en
heal.identifier.primary 10.1016/j.epsr.2011.03.013 en
heal.identifier.secondary http://dx.doi.org/10.1016/j.epsr.2011.03.013 en
heal.language English en
heal.publicationDate 2011 en
heal.abstract Conventional state estimators (SE) are based on real-time measurements, consisting of bus voltages and active and reactive power flows and injections, and estimate the voltage phasors of the network buses. Until recently, these measurements were obtained only through SCADA. With the advent of GPS synchronized measurements obtained by phasor measurement units (PMU), effective techniques are required to incorporate the extremely accurate PMU measurements into state estimation, in order to improve its performance and observability. This paper develops a non-linear weighted least squares estimator by modeling the current phasor measurements either in rectangular or in polar coordinates and compares the two approaches. Any numerical problems arised at flat start or for lightly loaded lines, are resolved. The error amplification, due to the current phasor measurement transformation from polar into rectangular coordinates, is also investigated. The normalized residual test is used to effectively identify any bad data in the conventional and phasor measurements. The proposed techniques are tested with the IEEE 14-bus system. (C) 2011 Elsevier B.V. All rights reserved. en
heal.publisher ELSEVIER SCIENCE SA en
heal.journalName Electric Power Systems Research en
dc.identifier.doi 10.1016/j.epsr.2011.03.013 en
dc.identifier.isi ISI:000291774000032 en
dc.identifier.volume 81 en
dc.identifier.issue 7 en
dc.identifier.spage 1514 en
dc.identifier.epage 1524 en

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