Dynamic state estimator for detection of voltage stability and low frequency oscillation

Author

Kahl, M. ; Uber, Daniel ; Leibfried, T.

Author_Institution

Dept. of Electr. Energy Syst. & High-Voltage Technol., Karlsruhe Inst. of Technol., Karlsruhe, Germany

fYear

2014

fDate

20-23 May 2014

Firstpage

175

Lastpage

179

Abstract

Phase measurement units make it possible to measure and transmit voltage vectors with high transmission rates. The applications for monitoring and control purposes are in need of development. The paper presents a dynamic observer which is able to estimate magnitude and phase of grid node voltages by applying of a dynamic network model. Furthermore, the rotor speed of synchronous generators can be estimated. The goal of the observer is the detection of voltage instabilities and inter-area oscillations.

Keywords

observers; oscillations; phase estimation; phasor measurement; power grids; power system dynamic stability; power system state estimation; rotors; synchronous generators; velocity measurement; voltage control; PMU; dynamic network model; dynamic observer; dynamic state estimator; grid node voltage; interarea oscillation; low frequency oscillation; magnitude estimation; phase estimation; phase measurement unit; rotor speed estimation; synchronous generator; voltage instability detection; voltage vector transmission; Asia; Equations; Generators; Mathematical model; Observers; Power system dynamics; Power system stability; dynamic network; inter-area oscillations; state estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Innovative Smart Grid Technologies - Asia (ISGT Asia), 2014 IEEE

Conference_Location

Kuala Lumpur

Type

conf

DOI

10.1109/ISGT-Asia.2014.6873785

Filename

6873785