Effect of humidity and temperature on power electric-field intensity

We measure power electric-field intensity at a substation in southwestern P.R. China at various humidity levels and temperatures.Measurement data and a back propagation neural network are used to construct a model of electrical field intensity responses to fluctuations in humidity and ambient temperatures.The maximum error is 0.047 5.The results show that the power electric-field intensity increases as humidity rises when the temperature is constant;when humidity is a constant,temperature changes do not affect the regularity of the electric-field intensity in a consistent manner regularly.