Document Type
Conference Item
Publication Date
1-1-2013
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 under frequency 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 under frequency 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
Under-Frequency Load Shedding, Distribution state estimation, Distribution network, Islanding operation
Divisions
fac_eng
Event Title
IEEE PES Innovative Smart Grid Technologies (ISGT)
Event Location
IEEE
Event Dates
24-27 Feb 2013
Event Type
conference