A proposal to investigate the problems of three-phase distribution feeders supplying power to SWER systems
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Long distribution feeders connected to Single Wire Earth Return (SWER) systems are unique sub-systems of the electric power network in Australia, especially in the State of Queensland. Since the SWER systems are connected between two phases of a distribution line via an isolating transformer, they are inherently unbalanced loads.In this paper a proposal will be developed to investigate the problems associated with the SWER systems and to suggest possible solutions. The study is based on an actual distribution feeder supplying power to several SWER lines in a rural area of the State of Queensland, Australia. Some issues will be addressed including suggestions for correcting the unbalanced operation, high energy losses, voltage and load profile, and the quality of power supplied to the customers.
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Gay, D.; Thompson, A.; Than Oo, A.; Wolfs, Peter (2009)As demand for power increases in rural areas serviced by Single Wire Earth Return (SWER) networks, distribution issues are becoming increasingly evident. Voltage regulation and system capacity concerns are driving utilities ...
Wolfs, Peter (2005)The single wire earth return, (SWER), system is a low cost power distribution method that finds international use in rural areas. It is a key technology for the extension of grid systems. In Australia, SWER systems can ...
Investigation of Voltage Quality and Distribution Capacity Issues on Long Rural Three Phase Distribution Lines Supplying SWER SystemsMayer, J.; Hosseinzadeh, N.; Wolfs, Peter (2005)Single wire earth return (SWER) electric distribution feeders are used extensively in remote parts of Queensland and other states, as an economic means to deliver electrical energy to small customer loads, scattered ...