Viability study to implement peak load shaving at UCT Medical School

 

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dc.contributor.advisor Malengret, Michel en_ZA
dc.contributor.author Cornelio, Antonio M M en_ZA
dc.date.accessioned 2014-07-31T11:01:42Z
dc.date.available 2014-07-31T11:01:42Z
dc.date.issued 2007 en_ZA
dc.identifier.citation Cornelio, A. 2007. Viability study to implement peak load shaving at UCT Medical School. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/5265
dc.description Includes bibliographical references (p. 189-191).
dc.description.abstract 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. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Electrical Engineering en_ZA
dc.title Viability study to implement peak load shaving at UCT Medical School en_ZA
dc.type Thesis / Dissertation en_ZA
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering & the Built Environment en_ZA
dc.publisher.department Department of Electrical Engineering en_ZA
dc.type.qualificationlevel Masters en_ZA
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text


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