Overhead Transmission Line 750 kV Model with Bundle Wire

The power transmission line (TL) designer is faced with the problem of the possible corona discharge firing voltage assessment on the basis of the simple relationships, the designer should have the clear idea of the basic characteristics of the corona discharge, their dependences on the wire design and the bundle availability as well as the mutual influence of the present parameters. The model of the overhead transmission line (OHTL) with the bundle wire was designed just for the present purpose. The special attention was drawn to the approach to the model practical implementation. From the one hand the designers succeeded in the model simplification and from the other hand the present model is an accurate representation of the most significant characteristics of the corona discharge (physical phenomena during the corona discharge and their interrelations)