Ripple control signal interference due to a lightly loaded rural distribution line

Amplification of ripple control voltages on lightly loaded distribution lines can cause interference to consumer equipment, necessitating a method of modifying the line parameters in an effort to alleviate the problem. The techniques and assumptions used in modelling the parameters and distributed load of a particular rural distribution line in the North Canterbury Electric Power Board supply system are presented, to allow the use of a general purpose linear interactive network simulation computer program to assist in analysing the problem. Results of the computer simulations are compared to actual test values. The most satisfactory method of solving the problem is decided by considering these results, along with equipment costs and other electrical characteristics of the line. It is recommended that power factor correction capacitors be connected to the secondaries of several distribution transformers along the line