Magnetic Field Calculation Around 230kV Bundled Transmission Lines

Transmission lines are strategically important components of any power system. Power transmission lines are considered as one of the major sources of magnetic field. In recent years some people are concerned that daily exposure to magnetic fields may cause health problems. The rapid increase of electric energy utilization led to the reality that countries need to upgrade and develop existing and new transmission and distribution lines which resulted in the transmission lines to become inside the urban areas. Nowadays, bundled transmission lines are used for transmitting huge units of power over long distances. These bundled transmission lines can produce magnetic fields more than simple transmission lines. In this paper, theoretical studies of the magnetic fields produced by bundled transmission lines are described. First, a prepared software package for magnetic field calculation is developed in MATLAB. Then, magnetic field distributions under 230kV bundled power transmission lines are investigated.