Investigation and mitigation of technical electric power losses within City Power distribution network : South African case study
- Authors: Bakana, S. R.
- Date: 2017
- Subjects: Electric power-plants - South Africa - Load , Electric power-plants - Simulation methods , Electric power-plants - Efficiency , Eskom (Firm)
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/225142 , uj:22732
- Description: Abstract: The national grid is found more constrained, influenced by the growth in population and electrical usage, in addition to South Africa’s electricity sole power supplier (Eskom’s) load shedding scenario due to generating constraints. As the distribution network change its normal business, energy efficiency is the dominating term and the reduction of technical losses is one of the sections that needs attention in the emerging economy of South Africa. This dissertation evaluates different loads (residential, commercial and industrial), utilizing calculations through load factor improvement and simulation (DIgSILENT) methodologies in order to develop accurate and authentic results. These results are further analysed to develop optimum solution, mainly around improving the load factor with battery energy storage by peak shaving. The dissertation focuses on improving technical losses due to circulating current (I2R), thereby improving the overall energy efficiency that can further boost the operational efficiency and planning equipment’s of the electrical network when a battery energy storage is involved. , M.Tech. (Electrical Engineering)
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- Authors: Bakana, S. R.
- Date: 2017
- Subjects: Electric power-plants - South Africa - Load , Electric power-plants - Simulation methods , Electric power-plants - Efficiency , Eskom (Firm)
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/225142 , uj:22732
- Description: Abstract: The national grid is found more constrained, influenced by the growth in population and electrical usage, in addition to South Africa’s electricity sole power supplier (Eskom’s) load shedding scenario due to generating constraints. As the distribution network change its normal business, energy efficiency is the dominating term and the reduction of technical losses is one of the sections that needs attention in the emerging economy of South Africa. This dissertation evaluates different loads (residential, commercial and industrial), utilizing calculations through load factor improvement and simulation (DIgSILENT) methodologies in order to develop accurate and authentic results. These results are further analysed to develop optimum solution, mainly around improving the load factor with battery energy storage by peak shaving. The dissertation focuses on improving technical losses due to circulating current (I2R), thereby improving the overall energy efficiency that can further boost the operational efficiency and planning equipment’s of the electrical network when a battery energy storage is involved. , M.Tech. (Electrical Engineering)
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Integration aspects of risk based inspection and maintenance based on ISO 9001
- Authors: Xaba, Lungisani
- Date: 2017
- Subjects: Eskom (Firm) , Electric power-plants - Maintenance and repair , Electric power-plants Q- uality control , Electric power-plants - Efficiency
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/263132 , uj:27811
- Description: M.Phil. (Engineering Management) , Abstract: This mini dissertation describes the development and implementation of Risk Based Inspection and Maintenance termed RBIM for Eskom’s Power Generation Fleet. This study is as a result of the changes in the regulations governing vessels under pressure. The current fleet of Eskom power stations consists of 87 power generating units including Koeberg with a net capacity of 42000 MW. The challenge with the current fleet is that 63 units have either reached or exceeded their design life which poses legal and regulatory compliance threat to Eskom. To be compliant to legal and regulatory requirements Eskom had to comply with in-service inspection and testing interval requirements referred to regulation 11.1.d or implement regulation 12 of the PER in the face of load shedding. Eskom could not afford extended outages due to maintenance and opted of the implementation of a certified risk based inspection and maintenance management system. The aim of risk based inspection and maintenance is to improve safety, pressure equipment integrity, reliability, availability and maximized plant life. This mini dissertation looks at how RBIM process was developed, implemented and certified in the Eskom Power Generation fleet specifically 10 Power Stations. Audit reports from certification body and internal audit reports were analyzed to establish the integration aspects of the RIMAP process and ISO 9001 requirements, as well as the role played by quality assurance of, as well as the role played by quality assurance officers in the implementation and sustainability of the RBIM process. The outcome of the study revealed that there are a lot of similar requirements from RIMAP process requirements and ISO 9001 requirements that can be integrated to function holistically. The results also indicated that quality assurance officers have an important role to play in guiding the implementation, certification and sustainability of the process through continual improvement. The mini dissertation then concludes with the recommendations for power stations and other organisations wishing to implement such a framework and the need for future research.
- Full Text:
- Authors: Xaba, Lungisani
- Date: 2017
- Subjects: Eskom (Firm) , Electric power-plants - Maintenance and repair , Electric power-plants Q- uality control , Electric power-plants - Efficiency
- Language: English
- Type: Masters (Thesis)
- Identifier: http://hdl.handle.net/10210/263132 , uj:27811
- Description: M.Phil. (Engineering Management) , Abstract: This mini dissertation describes the development and implementation of Risk Based Inspection and Maintenance termed RBIM for Eskom’s Power Generation Fleet. This study is as a result of the changes in the regulations governing vessels under pressure. The current fleet of Eskom power stations consists of 87 power generating units including Koeberg with a net capacity of 42000 MW. The challenge with the current fleet is that 63 units have either reached or exceeded their design life which poses legal and regulatory compliance threat to Eskom. To be compliant to legal and regulatory requirements Eskom had to comply with in-service inspection and testing interval requirements referred to regulation 11.1.d or implement regulation 12 of the PER in the face of load shedding. Eskom could not afford extended outages due to maintenance and opted of the implementation of a certified risk based inspection and maintenance management system. The aim of risk based inspection and maintenance is to improve safety, pressure equipment integrity, reliability, availability and maximized plant life. This mini dissertation looks at how RBIM process was developed, implemented and certified in the Eskom Power Generation fleet specifically 10 Power Stations. Audit reports from certification body and internal audit reports were analyzed to establish the integration aspects of the RIMAP process and ISO 9001 requirements, as well as the role played by quality assurance of, as well as the role played by quality assurance officers in the implementation and sustainability of the RBIM process. The outcome of the study revealed that there are a lot of similar requirements from RIMAP process requirements and ISO 9001 requirements that can be integrated to function holistically. The results also indicated that quality assurance officers have an important role to play in guiding the implementation, certification and sustainability of the process through continual improvement. The mini dissertation then concludes with the recommendations for power stations and other organisations wishing to implement such a framework and the need for future research.
- Full Text:
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