Title :
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
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;
Conference_Titel :
Innovative Smart Grid Technologies - Asia (ISGT Asia), 2014 IEEE
Conference_Location :
Kuala Lumpur
DOI :
10.1109/ISGT-Asia.2014.6873785
