# High Voltage Lines

Jun 21st, 2015
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Electrical energy involves power generation, transmission, and distribution. The latter two involve DC or AC lines with varying voltages. The largest known DC voltage is approximately 1 million volts. AC transmission lines employ voltages ranging from 66 kilovolts to several hundred thousand kilovolts.

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High Voltage LinesI. NarrativeElectrical energy involves power generation, transmission, and distribution. The latter two involve DC or AC lines with varying voltages. The largest known DC voltage is approximately 1 million volts. AC transmission lines employ voltages ranging from 66 kilovolts to several hundred thousand kilovolts. Since there are no high voltage DC lines in cities, the only concern is from high voltage AC lines to substations. These lines carry currents producing circumferential magnetic fields which exceed the IEEE standard (about .4 microWebers/ square meter for magnetic flux density and .03 W/kg for S.A.R.).These lines produce high intensity electromagnetic fields. The most recent concern has been the magnetic fields from high voltage transmission lines in residential areas. Possible effects of the magnetic fields are malignant tumors and genetic mutations.The voltage in residential areas is constantly increasing because of the rising number of lines, the higher voltages being used, and the number of homes being built near them. It seems that the highest exposure times correspond to the times of day that the electrical power consumption is the highest.The easiest way to minimize the magnetic flux density levels to individuals is to build homes such that a grounded, metallic, mesh screen is installed on the roof and in the walls while the house is being constructed.II. Numerical and Design Problems1. Calculate the magnetic field intensity (H), the

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