TYPES OF STRAY CURRENT PROTECTION OF UNDERGROUND STRUCTURES

Polina Petkova; Iva Petrinka

Scientific paper ID 904 : 2013/2

TYPES OF STRAY CURRENT PROTECTION OF UNDERGROUND STRUCTURES

Polina Petkova, Iva Petrinka

DC electrical grid system for railway transport feeding in Bulgaria uses track rails as a return path (feeder) to the substation.

When this type of feeding is used the underground utility structures and the transportation equipment are exposed to active corrosion because of the stray currents going from the rails to the earth.

In this paper explains the various types of corrosion protection of underground facilities.

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блуждаещи токове защита против корозияstray current corrosion protection.Polina Petkova Iva Petrinka

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