DocumentCode :
1943945
Title :
A new under-frequency load shedding scheme for islanded distribution network
Author :
Mokhlis, H. ; Karimi, Maryam ; Shahriari, A. ; Abu Bakar, Abu Hassan ; Laghari, J.A.
Author_Institution :
Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia
fYear :
2013
fDate :
24-27 Feb. 2013
Firstpage :
1
Lastpage :
6
Abstract :
High penetration of distributed generation (DG) in distribution level has open an opportunity for islanding operation of distribution networks. Through proper islanding operation, the reliability of the system can be improved by continuously supplying power from DG. However, an effective protection schemes for an islanded network are still an issue to be solved. Specifically to balance DG generation and load demand in order to maintain system frequency. Hence, an effective underfrequency load shedding scheme is required for an islanded distribution network which is not as strong as the grid. This paper presents a new under-frequency load shedding scheme for an islanded distribution network. A combination of adaptive under-frequency load shedding and state estimation is proposed for efficient and precise load shedding scheme. In this proposed method, overload is anticipated by utilizing an adaptive underfrequency load shedding scheme. Meanwhile, State estimation is used to estimate the load value. Finally, the estimated value of overload will be shed according to the estimated value of each bus demand.
Keywords :
distributed power generation; load shedding; power distribution reliability; power system state estimation; adaptive underfrequency load shedding scheme; balance DG generation; distributed generation; effective protection schemes; high DG penetration; islanded distribution network; islanding operation; load demand; load value estimation; state estimation; system frequency; system reliability; Frequency estimation; Frequency response; Generators; Islanding; Load modeling; State estimation; Distribution Network; Distribution State Estimation; Islanding Operation; Under-Frequency Load Shedding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Innovative Smart Grid Technologies (ISGT), 2013 IEEE PES
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-4894-2
Electronic_ISBN :
978-1-4673-4895-9
Type :
conf
DOI :
10.1109/ISGT.2013.6497803
Filename :
6497803
Link To Document :
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