Introduction

TransposIT is a software tool that assists the automation of the optimum transposition scenario on a power system network. This utility works on circuit data defined by the SPLITS computation module. Therefore, it is useful to the MultiLines and Right-of-Way Pro software packages.

Overview of TransposIT

It is well known that substantial current unbalance can develop within and between the circuits of a transmission line when the phases are not regularly transposed, even when the loads are balanced. Studying the effects of the characteristics of such transpositions (their location, direction of rotation, etc.) in order to arrive at an optimal configuration is a tedious task, requiring manual modification of the network model at every transposition location. Moreover, a huge number of different transposition scenarios may have to be examined. The TransposIT utility was created to simplify this task. This utility takes a reference SPLITS file as input and produces on output a different SPLITS file, with transpositions applied at user-defined locations, on user-specified circuits. Users can specify the transpositions either, visually through a graphical interface, using windows screens through a tabular approach, or using a SICL command input file. Either way, the transpositions are immediately displayed visually and simultaneously on all three input modes: this makes it easier to confirm that the transpositions really have the desired characteristics. All three modes of input are fully synchronized.