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Stray Current Mitigation of D.C. Electrified Railways
Technical Paper
904110
Sector:
Language:
English
Abstract
Since the early days of electrified railways the problems
associated with leakage current have been identified and numerous
solutions investigated.
The majority of original work came about by pressure from the
utility companies who were most affected by leakage current. With
the introduction of reinforced concrete construction for tunnels,
viaducts and track bed (slab track) consideration has had to be
given in more detail to the structures and to the equipments owned
and operated by the railways themselves. This paper discusses the
measures necessary to protect the structures and equipment and the
most significant of these are dealt with in detail.
All items are important to the overall solution of the problem
when considering the mitigation of stray currents from d.c.
railways. It is therefore important that stray current control be
viewed as a major item early in the design of a project, since once
the system has been built it is not easy to add-on.