Long variation in voltage and supply interruption in a distribution system

The paper examines a distribution system field data for the assessment of voltage variation and supply interruption. The under voltage has severe impacts on the consumer loads working conditions causing overloading and high transmission losses. The under-voltage limit has been set for voltage below...

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Main Authors: Amoo, Abdullahi Lanre, Okelola, Muniru, Said, Dalila
Format: Article
Published: Opast Group LLC 2022
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author Amoo, Abdullahi Lanre
Okelola, Muniru
Said, Dalila
author_facet Amoo, Abdullahi Lanre
Okelola, Muniru
Said, Dalila
author_sort Amoo, Abdullahi Lanre
collection ePrints
description The paper examines a distribution system field data for the assessment of voltage variation and supply interruption. The under voltage has severe impacts on the consumer loads working conditions causing overloading and high transmission losses. The under-voltage limit has been set for voltage below 0.9p.u. The measurement was conducted in the control room for the duration of one week for logging interval of 1-min using Fluke VR1710 that monitors single-phase voltage quality of power network. Long duration variations are considered to be present when the limits are exceeded for greater than 1 minute time lapse. In this paper, the lowest interruption duration recorded was 20 minutes while the number of under-voltage was 41 occurrences. A simple mathematical analysis of power flow deviation was determined for correlation with the frequency disturbances recorded by the equipment. Both measurements and simulation results show that frequency rapidly changes in the network. The lowest and highest frequency vary between (48.7665 Hz to 51.196 Hz) and (48.843 Hz to 51.263 Hz) respectively. Thus, voltage and frequency disturbance statistics vindicate the voltage variation in the site to be within the ±10% limits but the overall performance of frequency monitored in the site violated the operational limits of ± 0.2 Hz (i.e. 49.8 Hz to 50.2 Hz) and ± 0.5 Hz (i.e. 49.5 Hz to 50.5 Hz) for the statutory regulatory. The paper would provide repository data as point of reference for Electric power sector reform act No.6 2005.
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spelling utm.eprints-1047412024-02-25T04:55:01Z http://eprints.utm.my/104741/ Long variation in voltage and supply interruption in a distribution system Amoo, Abdullahi Lanre Okelola, Muniru Said, Dalila TK Electrical engineering. Electronics Nuclear engineering The paper examines a distribution system field data for the assessment of voltage variation and supply interruption. The under voltage has severe impacts on the consumer loads working conditions causing overloading and high transmission losses. The under-voltage limit has been set for voltage below 0.9p.u. The measurement was conducted in the control room for the duration of one week for logging interval of 1-min using Fluke VR1710 that monitors single-phase voltage quality of power network. Long duration variations are considered to be present when the limits are exceeded for greater than 1 minute time lapse. In this paper, the lowest interruption duration recorded was 20 minutes while the number of under-voltage was 41 occurrences. A simple mathematical analysis of power flow deviation was determined for correlation with the frequency disturbances recorded by the equipment. Both measurements and simulation results show that frequency rapidly changes in the network. The lowest and highest frequency vary between (48.7665 Hz to 51.196 Hz) and (48.843 Hz to 51.263 Hz) respectively. Thus, voltage and frequency disturbance statistics vindicate the voltage variation in the site to be within the ±10% limits but the overall performance of frequency monitored in the site violated the operational limits of ± 0.2 Hz (i.e. 49.8 Hz to 50.2 Hz) and ± 0.5 Hz (i.e. 49.5 Hz to 50.5 Hz) for the statutory regulatory. The paper would provide repository data as point of reference for Electric power sector reform act No.6 2005. Opast Group LLC 2022 Article PeerReviewed Amoo, Abdullahi Lanre and Okelola, Muniru and Said, Dalila (2022) Long variation in voltage and supply interruption in a distribution system. Advances in Theoretical & Computational Physics, 5 (2). pp. 463-476. ISSN 2639-0108 https://www.opastpublishers.com/table-contents/atcp-volume-5-issue-2-year-2022 NA
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Amoo, Abdullahi Lanre
Okelola, Muniru
Said, Dalila
Long variation in voltage and supply interruption in a distribution system
title Long variation in voltage and supply interruption in a distribution system
title_full Long variation in voltage and supply interruption in a distribution system
title_fullStr Long variation in voltage and supply interruption in a distribution system
title_full_unstemmed Long variation in voltage and supply interruption in a distribution system
title_short Long variation in voltage and supply interruption in a distribution system
title_sort long variation in voltage and supply interruption in a distribution system
topic TK Electrical engineering. Electronics Nuclear engineering
work_keys_str_mv AT amooabdullahilanre longvariationinvoltageandsupplyinterruptioninadistributionsystem
AT okelolamuniru longvariationinvoltageandsupplyinterruptioninadistributionsystem
AT saiddalila longvariationinvoltageandsupplyinterruptioninadistributionsystem