Power distribution problems on 11 kV feeder networks in Akure, Nigeria

Melodi, A. O.; Ogunboyo, Patrick Taiwo

doi:10.1109/nigercon.2013.6715668

Cited by 7 publications

(7 citation statements)

References 1 publication

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“…Also 96 measurements correspond to one year data. The energy not supplied due to i-th outage cause for m-th month (ENS m,i ) is evaluated as: ENS m,i = ∑ P m,i,e OD m,i,e e=1 (7) where P m,i,e and OD m,i,e are outage power and duration respectively for e-th outage event, i-th outage cause, and m-th measurement; data of these variables are extracted form system records for the considered period. = P m OD m (8) where P m and OD m are equivalent active power not supplied (MW) and total outage duration for the system for m-th measurement.…”

Section: Methodsmentioning

confidence: 99%

“…Basic power system reliability concepts discussed in literature as [1], [6], [7], [10] were considered in deriving an effective algorithm for obtaining model values for Nigerian township system in spite of load shedding events and without need for direct consideration of connected customers. The obtained results would enhance justification for investment in planned off-line and on-line network maintenance to obtain quality service, which is also a requirement by regulations [11], [12].…”

Section: Figure 3 No Of Distribution Transformers Per Feedermentioning

confidence: 99%

“…According to [5], lots of transformer failures were a major cause of fault outage problems in the distribution sytem. These failures were due to overloading, Under state owned operation, some studies had shown that the distribution system had poor reliability values [6][7][8]. According to [6] and [7], by deduction, the system unavailability was described as 0.36 and 0.32 respectively.…”

Section: Introductionmentioning

confidence: 99%

“…These failures were due to overloading, Under state owned operation, some studies had shown that the distribution system had poor reliability values [6][7][8]. According to [6] and [7], by deduction, the system unavailability was described as 0.36 and 0.32 respectively. These values were obtained on single 11 kV feeder-network composition in 2008 and 2011 time stages respectively.…”

Section: Introductionmentioning

confidence: 99%

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A Model Unavailability Perspective of Existing Nigerian Township Electricity Distribution

Oladipo¹,

Olusesan²

2017

IJECE

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The study aimed to investigate and obtain model values of system unavailability and cost of energy not supplied in existing Nigerian township electricity distributions using a robust representative system. Outage data was obtained from system records for analysis using frequency distribution statistics to identify the causes of outages, and the contribution of each cause of outage to the overall system outage. The cost of energy not supplied (CENS) due to faults, was evaluated at a rate of NGN6 per kWHr. An analysis of the results shows that in a distribution feeder (and system) unavailability is mainly due to load shedding arising and faults; feeder unavailability involving load shedding is 0.25, and 0.1 without load shedding. Compared with standard UA value for well managed systems of less than or 0.01, the obtained unavailability values for a feeder show that downtime management was poor, and the corresponding cost – prohibitive. In view of the regular load shedding on the feeders and poor downtime management, this study recommends a need to obtain model loadflow perspective of township electricity distribution to ascertain load carrying capacity, and the application of distribution automation system or other effective strategies to mitigate downtime.

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Section: Methodsmentioning

confidence: 99%

Section: Figure 3 No Of Distribution Transformers Per Feedermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Model Unavailability Perspective of Existing Nigerian Township Electricity Distribution

Oladipo¹,

Olusesan²

2017

IJECE

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“…Majority of the distribution networks are assumed to be complicated because of frequent power outages. The end customers always encountered the problems of voltage drop and power loss [6]. An evolutionary algorithm, called as DFR (Distribution Feeder Reconfiguration) has been proposed in [7].…”

Section: Performance Enhancement Of Low Voltage Distribution Network mentioning

confidence: 99%

Performance Enhancement of Low Voltage Distribution Network in Developing Countries using Hybrid Rehabilitation Technique

Khan¹,

Chowdhry²

2018

Mehran Univ. res. j. eng. technol.

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Majority of the developing countries are facing problem of low supply voltage coupled with shortage of electrical energy. There is a growing concern for ways and means to preserve the existing resources and optimize the performance of EPDS (Electric Power Distribution System). Poor condition of distribution network, utilization of low current carrying capacity conductors with overloading is mainly causing the voltage drop, power loss and energy loss in the LVDN (Low Voltage Distribution Networks). Most of developing countriesare encountered with financial problems to ward up gradation of the existing network. Under such circumstances, it is essential to optimize the low voltage distribution network using innovative approach to design the LVDN. In thiswork, ahybrid rehabilitation techniqueis used for the performance improvement of LVD utilities network. Most of the availablealgorithms areconsidering the distribution networks with balance distributed load andunity power factor. The proposed methodology has been applied to LVDN, working under randomly distributed load with low power factor. The technique is applied to improve the efficiency of LVDN in terms of power loss and voltage drop reduction. Optimization of three different circuits of village QutabFerozal, Banth and Pothi Mandra of IESCO, has been selected as a case study. The analysis has been performed using ELR (Energy Loss Reduction) and CADPAD (Computer Aided Distribution Planning and Design) software. Field visits have been conducted to acquire the real data of various LVDN configurations. Simulation results are validated with the actual data of the selected LVDN feeders and found within the permissible limits.

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Customer-oriented power supply reliability and evaluation for Nigeria’s electricity supply industry

Melodi

2023

Electr Eng

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Power distribution problems on 11 kV feeder networks in Akure, Nigeria

Cited by 7 publications

References 1 publication

A Model Unavailability Perspective of Existing Nigerian Township Electricity Distribution

A Model Unavailability Perspective of Existing Nigerian Township Electricity Distribution

Performance Enhancement of Low Voltage Distribution Network in Developing Countries using Hybrid Rehabilitation Technique

Customer-oriented power supply reliability and evaluation for Nigeria’s electricity supply industry

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