8. Rules for setting disturbance limit values

8.1 Technical criteria

While it's easy and inexpensive to set a limit on disturbance to devices such as electrical household appliances, the choice of limits in the case of power transmission lines goes beyond the purely technical and depends largely on economic conditions.

In this article, we have clearly shown that disturbances due to conductors on high and extra-high voltage lines are practically imposed by the voltage and conductor cross-section, so that once this choice has been made, the engineer has very little control over the amplitude of the phenomenon; all he can do is remedy any anomalies. However, this choice is strongly conditioned by economic considerations; in particular, at the start of operation of a new voltage level, the economic optimum...