An intelligent under frequency load shedding scheme for islanded distribution network

Laghari, J.A. and Mokhlis, Hazlie and Halim Abu Bakar, A.B. and Karimi, M. and Shahriari, A. (2012) An intelligent under frequency load shedding scheme for islanded distribution network. In: 2012 IEEE International Power Engineering and Optimization Conference, PEOCO 2012, 2012, Melaka.

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In islanding mode, system frequency is severely disturbed due to imbalance between generation and load demand resulting in overloading or loss of generation cases. In order to cope with these events, under-frequency load shedding scheme (UFLS) is applied to stabilize the frequency. This paper presents an intelligent under frequency load shedding scheme implemented on mini-hydro operating in islanded mode. The proposed UFLS scheme consists of a fuzzy logic load shedding controller (FLLSC) with load shedding controller module (LSCM). The FLLSC by measuring frequency and rate of change of frequency estimates the amount of load to be shed. The LSCM sheds the load estimated by FLLSC. This scheme is tested for event based and response based cases. The results have shown that proposed load shedding scheme successfully estimates the amount of load to be shed and stabilizes the frequency for these cases.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Conference code: 91838 Export Date: 17 April 2013 Source: Scopus Art. No.: 6230832 :doi 10.1109/PEOCO.2012.6230832 Language of Original Document: English Correspondence Address: Laghari, J.A.; Department of Electrical Engineering, Faculty of Engineering, University of MalayaMalaysia; email: References: Barker, P.P., De Mello, R.W., Determining the impact of distributed generation on power systems. I. Radial distribution systems (2000) Power Engineering Society Summer Meeting, 2000, 3, pp. 1645-1656. , IEEE; Walling, R.A., Miller, N.W., Distributed generation islanding-implications on power system dynamic performance (2002) Power Engineering Society Summer Meeting, 2002, 1, pp. 92-96. , IEEE; Ding, X., Girgis, A.A., Optimal load shedding strategy in power systems with distributed generation (2001) Power Engineering Society Winter Meeting, 2001, 2, pp. 788-793. , IEEE; (2003) IEEE Standard for Interconnecting Distributed Resources with Electric Power Systems, pp. 0-1-16. , IEEE Std 1547-2003; (2000) IEEE Recommended Practice for Utility Interface of Photovoltaic (PV) Systems, pp. i. , IEEE Std 929-2000; Terzija, V.V., Koglin, H.J., Adaptive underfrequency load shedding integrated with a frequency estimation numerical algorithm (2002) Generation, Transmission and Distribution, IEE Proceedings, 149, pp. 713-718; Pasand, M.S., Seyedi, H., New Centralized Adaptive under Frequency Load Shedding Algorithms (2007) Large Engineering Systems Conference on Power Engineering, 2007, pp. 44-48; Seyedi, H., Sanaye-Pasand, M., New centralised adaptive load-shedding algorithms to mitigate power system blackouts (2009) Generation, Transmission & Distribution, IET, 3, pp. 99-114; Terzija, V.V., Adaptive underfrequency load shedding based on the magnitude of the disturbance estimation (2006) IEEE Transactions on Power Systems, 21, pp. 1260-1266; Anderson, P.M., Mirheydar, M., An adaptive method for setting underfrequency load shedding relays (1992) IEEE Transactions on Power Systems, 7, pp. 647-655; Shokooh, F., Intelligent Load Shedding (2011) Industry Applications Magazine, 17, pp. 44-53. , IEEE; Jung, J., Adaptation in load shedding under vulnerable operating conditions (2002) IEEE Transactions on Power Systems, 17, pp. 1199-1205; Mahat, P., Underfrequency Load Shedding for an Islanded Distribution System with Distributed Generators (2010) IEEE Transactions on Power Delivery, 25, pp. 911-918; Aponte, E.E., Nelson, J.K., Time optimal load shedding for distributed power systems (2006) IEEE Transactions on Power Systems, 21, pp. 269-277; Mohd Zin, A.A., A review of under-frequency load shedding scheme on TNB system Power and Energy Conference, PECon 2004. Proceedings. National, pp. 170-174
Uncontrolled Keywords: Event Based case; Fuzzy Logic control; Mini Hydro; Response Based case; Controller modules; Event-based; Islanded mode; Islanding; Load demand; Load shedding scheme; Load-shedding; Measuring frequency; Mini-hydro; Rate of change of frequencies; System frequency; UFLS scheme; Underfrequency load-shedding; Fuzzy logic; Optimization
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 11 Jul 2013 03:17
Last Modified: 09 Oct 2019 08:49

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