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Controlling Rail Potential of DC Supplied Rail Traction
Systems
| Title: |
Controlling Rail Potential of DC Supplied Rail Traction
Systems |
| Author(s): |
M T Söylemez, S Açıkbaş and A Kaypmaz |
| Journal: |
Turkish Journal of Electrical Engineering & Computer
Sciences |
| Volume / No: |
14 / 3 |
| Date: |
December 2006 |
| Pages: |
475-484 |
| Keywords: |
Rail Transit,
Earthing, Rail Potential Control, Stray Currents, Touch Voltage |
| Abstract: |
Most of the modern DC electrified mass transit systems use a
totally floating earth as their grounding strategy. A well known problem
related with totally floating systems is that the touch potentials can be
dangerously high. In order to reduce the voltages on rails, several devices
exist. Most of these devices allow a direct connection to earth when a
certain voltage threshold is exceeded. In this paper, working principles of
these devices are given and the effect of certain parameters related with
these devices on the minimum achievable touch potentials is investigated. |
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