Vol. 12, No.1, pp.8-11 (2018)
Mitigation of Electric Fields/Induced Voltage on Oil Truck Crossing EHVAC Transmission Lines; Case Study in Saudi Arabia
H. A. Ziedan1 and Meshari D. Alanazi2
1Department of Electrical Engineering, Faculty of Engineering, Assiut University, Egypt
2Department of Electrical Engineering, College of Engineering, Jouf University, Saudi Arabia
Abstract
This paper is aimed at mitigation of electric fields and induced voltages on oil trucks crossing Extra High Voltage Alternating Current (EHVAC) transmission line of 380 kV double circuits rating 900 MVA. EHVAC transmission line is crossing the way to a Petroleum Distribution Station owned by Aramco in Hail, Saudi Arabia. The method of modeling is based on the Charge Simulation Method (CSM) to determine the distribution of electric field, induced charges and the currents on an oil truck body. Experimental measurements of induced emf are taken from real oil truck loaded by gasoline crossing 380 kV Transmission lines double circuits. The calculated values of electric field and induced emf on oil truck body agreed reasonably with those measured experimentally. There are two suggested methods to mitigate the electric field and induced voltages on oil truck body due to EHVAC lines; first, by increasing the height of towers which are placed in the crossing area; second, by use shield ground wires under the stressed conductors.
Keywords - Extra high voltage transmission lines (EHVAC), charge simulation method, mitigation of electric fields, induced voltages, shielding wires, oil truck