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Static and dynamic under-frequency load shedding: a comparison

Mohd. Zin , A. A. and Mohd. Hafcz, H. and Wong, W. K. (2004) Static and dynamic under-frequency load shedding: a comparison. In: POWERCON 2004.

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Abstract

Safe operation of a power system will require that system frequency is kept within a specified range. When the generation is insufficient due to disturbances, the frequency might fa11 under the minimum allowable value which may lead to system blackout if not properly counteracted. This frequency decline may be corrected by shedding certain amount of load so that the system is back into balanced state. In this paper several under-frequency load shedding schemes are reviewed. Comparison are made between static scheme which shed a fured, oredetermined amount of load at each staee and a dvnamic system which shed the load by taking into account the siz; of the disturbance and the voltage and frequency characteristics. Simulations were done on a five buses power system to obtain the amount of load shed, minimum under-frequency, number of stages and completion time. ResuIts from the dynamic scheme appear to give a better frequency recovery.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Under-frequency Load Shedding, UFLS, static and dynamic.
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Electrical Engineering
ID Code:1611
Deposited By: Dr Zaharuddin Mohamed
Deposited On:08 Mar 2007 05:36
Last Modified:28 Dec 2011 05:46

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