Safety Considerations Untransposed Overhead Transmission Lines.

Document Type : Research Studies

Authors

1 Assistant Professor., Electrical Power & Machines Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt.

2 Assistant Professor., Electrical Engineering Department., Faculty of Engineering., El-Monofia University.

Abstract

For untransposed H.V. T.L. electro magnetic and electrosratic effects are so large that affecting the balance of T.L. phase impedances. So, if an ungrounded object to ground through the object's  capacitance.
This paper presents formulae for predicting the induced currents passing through an object in the vicinity of such lines.
Also, formulae for predicting the voltage gradient are developed.

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