Studies on Power Distribution System Reliability Assessment and Improvement (Case Study: Jimma Town Distribution System)
| dc.contributor.advisor | Biru, Getachew(PhD) | |
| dc.contributor.author | Berhanu, Eyasu | |
| dc.date.accessioned | 2018-07-06T07:01:06Z | |
| dc.date.accessioned | 2023-11-04T15:14:35Z | |
| dc.date.available | 2018-07-06T07:01:06Z | |
| dc.date.available | 2023-11-04T15:14:35Z | |
| dc.date.issued | 2017-03 | |
| dc.description.abstract | A reliable electric power supply system is a predictable pre-requisite for the technological, political and economic growth of any nation. This is a reaction of an increasingly electricity dependent society, which demands electricity supplies at acceptable quality levels and at reasonable tariffs. Power interruption becomes a serious problem in Ethiopia. This is because of the very high outage frequency and very long time service restoration. Due to this problem, day to day activities of the society are highly affected and hence they are strongly complaining the electric utility. Power interruption significantly costs both sides, the utility and the customer. This research has been conducted a studies on powers system reliability assessment and improvement with a case study in Jimma town distribution system. Customers has complained soundly about power interruptions in the city. The reliability assessment has been done on 15kV city feeder to assess the performance of the present system and also predictive reliability analysis for the future. The interruption data of years 2010-2015 has been used as a base year. The study has evaluated different mitigation alternatives to improve the system reliability at reasonable cost. Many alternatives has been assessed using heuristic method and the alternative with low SAIDI, SAIFI and EENS at a reasonable cost has been selected. In general, this thesis work reveals that the reliability of the system has been improved significantly by implementing reliability improvement solutions that are justified economically. Even if the uncertainty of the input data is taken into account, SAIFI has been reduced by 84.75 % as compared with the average reliability indices values of the system in the base years. In the same case SAIDI and EENS have been decreased by 85 % and 88.651 % respectively. The proposed solution has been saved 579523.96 ETB per year from the unsold energy of one feeder only with 2.03 years payback period investment. Satisfaction of the society has been considered as a priceless advantage. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/123456789/6835 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Distribution System | en_US |
| dc.title | Studies on Power Distribution System Reliability Assessment and Improvement (Case Study: Jimma Town Distribution System) | en_US |
| dc.type | Thesis | en_US |