An Alternative for Including Phasor Measurements in State Estimators

Zhou, Ming; Centeno, Virgilio; Thorp, James S.; Phadke, A.G.

doi:10.1109/tpwrs.2006.881112

Cited by 349 publications

(206 citation statements)

References 10 publications

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“…smart meters, SCADA sensors and pseudo measurements). In [114], two different ways of fusing PMU data and conventional SCADA measurement data were found for static SE.…”

Section: Incorporation Of Pmu Measurements In Dssementioning

confidence: 99%

Distribution system state estimation-A step towards smart grid

Ahmad

Rasool

Özsoy

et al. 2018

Renewable and Sustainable Energy Reviews

141

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“…smart meters, SCADA sensors and pseudo measurements). In [114], two different ways of fusing PMU data and conventional SCADA measurement data were found for static SE.…”

Section: Incorporation Of Pmu Measurements In Dssementioning

confidence: 99%

Distribution system state estimation-A step towards smart grid

Ahmad

Rasool

Özsoy

et al. 2018

Renewable and Sustainable Energy Reviews

141

View full text Add to dashboard Cite

“…Leaving existing state estimation software unchanged, Ref. [15] proposed a post-processing linear state estimator using synchrophasor measurements to enhance accuracy. Following the idea to keep existing state estimation software unchanged, it was proposed in [16] to process separately SCADA (by existing software) and phasor measurements (as an additional estimation module), with techniques from fusion theory to combine both results.…”

Section: Paper Accepted For Publication In Ieee Transactions On Instrmentioning

confidence: 99%

Electric Power Network State Tracking From Multirate Measurements

Alcaide-Moreno

Fuerte‐Esquivel

Glavić

et al. 2018

IEEE Trans. Instrum. Meas.

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This paper proposes a novel tracking state estimator to process both fast-rate synchronized phasor and slowrate SCADA measurements. The former are assumed to be in limited number. The latter are exploited as and when they arrive to the control center. In order to restore observability, after each execution of the tracking state estimator, forecasted SCADA measurements are used as pseudo-measurements in the next estimation. An event detection analysis allows assessing if the system is in quasi steady-state. If so, an innovation analysis is performed to identify and eliminate erroneous SCADA measurements. The system state is computed by Hachtel's augmented matrix method. The option of exploiting time-tagged SCADA measurements is also considered. The method is illustrated through detailed dynamic simulations of a test system evolving towards voltage collapse, with and without emergency control.

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“…The use of phasor measurements in power system state estimation is investigated in [19,20]. In [21], a post processing linear estimator incorporating the phasor measurements and the results of the traditional state estimator is studied. In [22,23], the inclusion of real and imaginary part of the complex current measurement in an existing WLS estimator is described, and their convergence and accuracy performance was presented.…”

Section: Introductionmentioning

confidence: 99%

A Mixed WLS Power System State Estimation Method Integrating a Wide-Area Measurement System and SCADA Technology

Jin

Shen

2018

Energies

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Abstract:To address the issue that the phasor measurement units (PMUs) of wide area measurement system (WAMS) are not sufficient for static state estimation in most existing power systems, this paper proposes a mixed power system weighted least squares (WLS) state estimation method integrating a wide-area measurement system and supervisory control and data acquisition (SCADA) technology. The hybrid calculation model is established by incorporating phasor measurements (including the node voltage phasors and branch current phasors) and the results of the traditional state estimator in a post-processing estimator. The performance assessment is discussed through setting up mathematical models of the distribution network. Based on PMU placement optimization and bias analysis, the effectiveness of the proposed method was proved to be accurate and reliable by simulations of different cases. Furthermore, emulating calculation shows this method greatly improves the accuracy and stability of the state estimation solution, compared with the traditional WLS state estimation.

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An Alternative for Including Phasor Measurements in State Estimators

Cited by 349 publications

References 10 publications

Distribution system state estimation-A step towards smart grid

Distribution system state estimation-A step towards smart grid

Electric Power Network State Tracking From Multirate Measurements

A Mixed WLS Power System State Estimation Method Integrating a Wide-Area Measurement System and SCADA Technology

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