Browsing Engineering Journal of Qatar University - [From 1988 TO 2005] by Author "Alammari, R.A."
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A Demodulation Technique For Power System Local Frequency And Voltage Measurements
Soliman, S.A.; Alammari, R. A.; Al-Kandari, M. A.; El-Hawary, M. E. ( Qatar University , 2003 , Article)The demodulation technique of two complex signals is used to estimate the power system local frequency and voltage phasor. The first complex signal is generated from the three-phase voltage waveform by using the ... -
The Voltage Collapse Problem Based On The Power System Loadability
Alammari, R. A. ( Qatar University , 1997 , Article)This paper addresses the problem of voltage instability at which the power system reaches its maximum admissible load. A voltage collapse proximity indicator (VCPI) is derived and its performance is investigated. The VCPI ... -
Voltage Stability Margin Identification Using Local Measurements And Linear Kalman Filter
Alammari, R. A. ( Qatar University , 2002 , Article)Voltage stability investigation is of a great importance for long-term electric load expansion as well as power system operation. This paper presents a new algorithm for identification of voltage instability in a specified ...