The optimal placement of switching devices on rural medium-voltage systems
Master Thesis
2001
Permanent link to this Item
Authors
Supervisors
Journal Title
Link to Journal
Journal ISSN
Volume Title
Publisher
Publisher
University of Cape Town
Department
License
Series
Abstract
Electricity is supplied to rural areas by radial networks operating for example at 11 or 22 kV. A problem with radial networks is that faults on the feeders result in the loss of electricity supply to all customers if they are not sectionalised. Some radial networks emanating from one feeder from the sub-station may consist of up to 300 km of line, taking into account spurs, which makes fault detection difficult and increases customer outage time. Protective devices such as reclosers, sectionalisers and fuses are place on distribution systems to reduce the number of customers that will not have service at one time or another due to any fault on the system. There do not appear to be clear rules with regard to the placement of these protective devices. With the installed cost of devices such as sectionalisers bieng over fifty thousand rand, this is naturally of concern to a power utility.
Description
Bibliography: leaves 104-106.
Keywords
Reference:
Pitamber, N. 2001. The optimal placement of switching devices on rural medium-voltage systems. University of Cape Town.