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See detailDynamic State Estimation of Synchronous Generators using Phasor Measurement Units
Del Angel, Alberto ULiege

Doctoral thesis (2007)

This main objective of this thesis is to develop and improve techniques for estimating and predicting rotor angles, speeds and accelerations in the time frame of transient (angle) stability of electric ... [more ▼]

This main objective of this thesis is to develop and improve techniques for estimating and predicting rotor angles, speeds and accelerations in the time frame of transient (angle) stability of electric power systems. The investigated dynamic state estimation technique is based on the use of voltage and current phasors that can be acquired in real-time using a PMU (phasor measurement unit) located at the EHV bus of the power system. The research is based on simulation data because techniques for the direct measurement of rotor angle were not available. [less ▲]

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See detailUsing artificial neural networks to estimate rotor angles and speeds from phasor measurements
Del Angel, Alberto; Glavic, Mevludin; Wehenkel, Louis ULiege

(2003)

This paper deals with an improved use of phasor measurements. In particular, the paper focuses on the development of a technique for estimation of generator rotor angle and speed, based on phasor ... [more ▼]

This paper deals with an improved use of phasor measurements. In particular, the paper focuses on the development of a technique for estimation of generator rotor angle and speed, based on phasor measurement units, for transient stability assessment and control in real-time. Two multilayered feed-forward artificial neural networks are used for this purpose. One for the estimation of rotor angle and another for the estimation of rotor speed. The validation has been made by simulation in a power system because techniques for the direct measurement were not available. Results obtained with the help of a simple one machine to infinite bus system are presented and compared against those obtained using analytical formulas derived from the generator classical model. [less ▲]

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