Ae. Emanuel et al., DISTRIBUTION FEEDERS WITH NONLINEAR LOADS IN THE NORTHEAST USA .1. VOLTAGE DISTORTION FORECAST, IEEE transactions on power delivery, 10(1), 1995, pp. 340-347
This paper forecasts the level of voltage Total Harmonic Distortion (V
THD) for a typical customer during the next two decades. The study is
based on a growth projection of residential, commercial and industrial
loads and the acceptance of new technologies such as Adjustable Speed
Drives (ASDs) and Electronic Ballasts. The forecast was generated for
the service areas of the above two utilities and applied to three rea
l-life, 13.8 kV feeders. The harmonic power flow was determined for ea
ch feeder under the assumption of different levels of current distorti
ons and different types of non-lineal: loads. it was found that short
feeders, <3 mi, are more immune to harmonic current effects than long
feeders, >5mi. It was found that the rate of increase of VTHD could be
as low as 0.01%/year for a short feeder without parallel reasonances
or could be as high as 0.35%/year in harmonic sensitive systems.