Demand-side solutions for extending the capacity of rural reticulation networks using Written-pole technology

This paper investigates the use of Written-pole technology to eliminate the disadvantages of conventional induction machines as they are applied in rural reticulation networks. The intended purpose of this exercise is to extend the “lifetime” of these networks. The concerns and considerations pertaining to reticulation planning as well as the potential problems which may be encountered on these networks are discussed. Written-pole technology (´permanent magnet´ synchronous motor) is justified as a feasible alternative to conventional induction machines based on the following considerations: the lower start-up current, the high power factor, the higher efficiency and additional benefits such as dip ride-through capabilities. The thermal limit of a reticulation line, the voltage regulation limit at the end of a reticulation line and the power quality of the line are used as the comparison criterion