Viability study to implement peak load shaving at UCT Medical School

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dc.contributor.advisorMalengret, Michelen_ZA
dc.contributor.authorCornelio, Antonio M Men_ZA
dc.date.accessioned2014-07-31T11:01:42Z
dc.date.available2014-07-31T11:01:42Z
dc.date.issued2007en_ZA
dc.descriptionIncludes bibliographical references (p. 189-191).
dc.description.abstractThis Master thesis investigates the application of Peak Load Shaving (PLS) at University of Cape Town Medical School (UCTMS). The purpose was to decrease the monthly maximum demand (MMD) in kVA such that UCTMS monthly electricity bill is decreased. It was purposed that implementing a three-phase inverter in conjunction with a lead-acid battery at UCTMS for PLS is technical and financial viable. Five-year UCTMS MMD data history was gathered from UCT maintenance office as well as eight-month UCTMS load profile, which was gathered using the available electrical meter at Electrical Department Substation for Medical School at FalmouthRoad. Control strategies studies from previous works enabled the quickly synchronization of the three-phase inverter to a three-phase grid. It gave a good quality balanced control of the three-phase currents through the filter inductors, consequently gave a good quality control of the real and reactive power. Secondly a PLS algorithm (PLSA) was developed, which had the aim of setting a threshold point (TP) to prevent the MMD supplied to UCTMS to surpass the TP. In addition, the PLSA in conjunction with designed controllers would charge the battery at unity power factor (PF), whenever the MD is below the set TP and discharge at the same PF conversely, hence limiting the MMD at the TP. To test the purposed PLS topology, simplorer simulator was used, where two daily UCTMS load profile were simulated. The controls design and PLSA were implemented and the result showed that implementing PLS at UCTMS is technical viable. In practice, a prototype was built to show the synchronization of the three-phase inverter with three-phase grid by using a digital phase locked loop PI-based controller implemented in a DSP chip.en_ZA
dc.identifier.apacitationCornelio, A. M. M. (2007). <i>Viability study to implement peak load shaving at UCT Medical School</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/5265en_ZA
dc.identifier.chicagocitationCornelio, Antonio M M. <i>"Viability study to implement peak load shaving at UCT Medical School."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 2007. http://hdl.handle.net/11427/5265en_ZA
dc.identifier.citationCornelio, A. 2007. Viability study to implement peak load shaving at UCT Medical School. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Cornelio, Antonio M M AB - This Master thesis investigates the application of Peak Load Shaving (PLS) at University of Cape Town Medical School (UCTMS). The purpose was to decrease the monthly maximum demand (MMD) in kVA such that UCTMS monthly electricity bill is decreased. It was purposed that implementing a three-phase inverter in conjunction with a lead-acid battery at UCTMS for PLS is technical and financial viable. Five-year UCTMS MMD data history was gathered from UCT maintenance office as well as eight-month UCTMS load profile, which was gathered using the available electrical meter at Electrical Department Substation for Medical School at FalmouthRoad. Control strategies studies from previous works enabled the quickly synchronization of the three-phase inverter to a three-phase grid. It gave a good quality balanced control of the three-phase currents through the filter inductors, consequently gave a good quality control of the real and reactive power. Secondly a PLS algorithm (PLSA) was developed, which had the aim of setting a threshold point (TP) to prevent the MMD supplied to UCTMS to surpass the TP. In addition, the PLSA in conjunction with designed controllers would charge the battery at unity power factor (PF), whenever the MD is below the set TP and discharge at the same PF conversely, hence limiting the MMD at the TP. To test the purposed PLS topology, simplorer simulator was used, where two daily UCTMS load profile were simulated. The controls design and PLSA were implemented and the result showed that implementing PLS at UCTMS is technical viable. In practice, a prototype was built to show the synchronization of the three-phase inverter with three-phase grid by using a digital phase locked loop PI-based controller implemented in a DSP chip. DA - 2007 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2007 T1 - Viability study to implement peak load shaving at UCT Medical School TI - Viability study to implement peak load shaving at UCT Medical School UR - http://hdl.handle.net/11427/5265 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/5265
dc.identifier.vancouvercitationCornelio AMM. Viability study to implement peak load shaving at UCT Medical School. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 2007 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/5265en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Electrical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherElectrical Engineeringen_ZA
dc.titleViability study to implement peak load shaving at UCT Medical Schoolen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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