Amplitude probability distribution measurements at the apple grove 775 kV project

As part of the Radio Interference (RI) meter-comparison tests at the AEP-Westinghouse Apple Grove 775 kV Project in Apple Grove West Virginia, October 1974, Amplitude Probability Distribution (APD) measurements were made of the wet and dry conductor corona and gap radio noise processes. This paper describes the equipment and methods used for the measurements. From the APD data it is shown that values for the Vrms, Vaverageand Vdnoise parameters may be calculated and that these agree favourably with the values of the same parameters measured on meters having the same bandwidths. Finally it is shown that from values of the Vrmsand Vdnoise parameters it is possible to predict the APD with good results by using the CCIR and Log-Normal noise models previously developed for atmospheric noise.