Substation noise at distribution-line communication frequencies

Measurements of noise on the distribution line at power distribution substations in the frequency range from 6 GHz to 14 GHz are presented. This is the frequency range used for distribution-line communication systems by power companies for load control and feeder automation. The measurements reported here are concerned with harmonic and background noise, which are omnipresent on the substation bus. Single-frequency noise may or may not be present in a given frequency band. Impulse noise is intermittent. >