A new approach of under-frequency load shedding technique in an islanded distribution network
Under-frequency load shedding is a common technique to maintain the power system stability by removing the overload in some part of the system. The existing under-frequency load shedding schemes operate successfully in the interconnected grid system. A particular approach of under-frequency load she...
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| Format: | Article |
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International Review of Electrical Engineering
2012
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| _version_ | 1825719434899095552 |
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| author | Karimi, M. Mohamad, H. Mokhlis, Hazlie Bakar, A.H.A. |
| author_facet | Karimi, M. Mohamad, H. Mokhlis, Hazlie Bakar, A.H.A. |
| author_sort | Karimi, M. |
| collection | UM |
| description | Under-frequency load shedding is a common technique to maintain the power system stability by removing the overload in some part of the system. The existing under-frequency load shedding schemes operate successfully in the interconnected grid system. A particular approach of under-frequency load shedding scheme is required for an islanded system which is known to be not as strong as the grid. This paper presents a new approach of load shedding scheme in an islanded distribution system incorporating distribution state estimation. The scheme is based on an intelligent technique to reduce the effect of power deficiency in an islanded network. The disturbance magnitude is calculated based on rate of change of frequency by using the simplest expression of the generator swing equation. Moreover, the process for assessing the power consumption of the customer can be achieved by state estimation method. In this paper, state estimation for a distribution network is developed and enhanced by composite load model to obtain the most practical value of the system state variables. Finally, the calculated value of the disturbance magnitude will be shed according to the estimated value of loads in each bus. |
| first_indexed | 2024-03-06T05:19:41Z |
| format | Article |
| id | um.eprints-7827 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:19:41Z |
| publishDate | 2012 |
| publisher | International Review of Electrical Engineering |
| record_format | dspace |
| spelling | um.eprints-78272019-10-09T09:22:47Z http://eprints.um.edu.my/7827/ A new approach of under-frequency load shedding technique in an islanded distribution network Karimi, M. Mohamad, H. Mokhlis, Hazlie Bakar, A.H.A. TA Engineering (General). Civil engineering (General) TK Electrical engineering. Electronics Nuclear engineering Under-frequency load shedding is a common technique to maintain the power system stability by removing the overload in some part of the system. The existing under-frequency load shedding schemes operate successfully in the interconnected grid system. A particular approach of under-frequency load shedding scheme is required for an islanded system which is known to be not as strong as the grid. This paper presents a new approach of load shedding scheme in an islanded distribution system incorporating distribution state estimation. The scheme is based on an intelligent technique to reduce the effect of power deficiency in an islanded network. The disturbance magnitude is calculated based on rate of change of frequency by using the simplest expression of the generator swing equation. Moreover, the process for assessing the power consumption of the customer can be achieved by state estimation method. In this paper, state estimation for a distribution network is developed and enhanced by composite load model to obtain the most practical value of the system state variables. Finally, the calculated value of the disturbance magnitude will be shed according to the estimated value of loads in each bus. International Review of Electrical Engineering 2012 Article PeerReviewed Karimi, M. and Mohamad, H. and Mokhlis, Hazlie and Bakar, A.H.A. (2012) A new approach of under-frequency load shedding technique in an islanded distribution network. International Review of Electrical Engineering, 7 (2). pp. 4155-4162. ISSN 18276660, http://www.scopus.com/inward/record.url?eid=2-s2.0-84864375450&partnerID=40&md5=2b0c8bdc3866ad5073c711df0b29da70 |
| spellingShingle | TA Engineering (General). Civil engineering (General) TK Electrical engineering. Electronics Nuclear engineering Karimi, M. Mohamad, H. Mokhlis, Hazlie Bakar, A.H.A. A new approach of under-frequency load shedding technique in an islanded distribution network |
| title | A new approach of under-frequency load shedding technique in an islanded distribution network |
| title_full | A new approach of under-frequency load shedding technique in an islanded distribution network |
| title_fullStr | A new approach of under-frequency load shedding technique in an islanded distribution network |
| title_full_unstemmed | A new approach of under-frequency load shedding technique in an islanded distribution network |
| title_short | A new approach of under-frequency load shedding technique in an islanded distribution network |
| title_sort | new approach of under frequency load shedding technique in an islanded distribution network |
| topic | TA Engineering (General). Civil engineering (General) TK Electrical engineering. Electronics Nuclear engineering |
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