Electric Fields due to A 500 kV Quadruple Circuit Transmission Line: Some Aspects Concerning Public Exposure

Extra high voltage and Ultra high voltage transmission lines produce high intensity electric fields (E-fields). These high intensity E-fields, which are in the vicinity of such lines, would result into adverse effects on humans. E-fields at the ground level should be below a certain limit as specified by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines from the point of view of public exposure. In the present study the E-fields due to the Quadruple circuit transmission line is estimated and analyzed. Finite element method is used to calculate the E-fields by placing the conductors at the permitted worst-case sag (8%) position for the chosen span. These results are compared with those available in the literature with 4 % sag.