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Light rail transit DC traction power system surge overvoltage protection

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1 Author(s)
Paul, D. ; Earth Tech, Oakland, CA, USA

At present, there are no industry standards or recommended guidelines for the application of DC surge arresters. It appears that such devices are applied based upon a rule of thumb without the benefit of analyzing characteristics, wave shape, and energy content of the expected overvoltage surges against the capabilities of the surge arrester. AC surge arresters are rerated for DC application. A difficulty arises due to a lack of clear published application literature on DC surge arresters, as well as lack of measured data on DC power system transient surges. This leads to the application of surge protective devices, which may be inappropriate. This paper describes the application of DC surge arresters to a typical light rail transit traction power system, and it makes a recommendation for the need of a standard on DC surge arresters test requirements and application guidelines

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Industry Applications, IEEE Transactions on  (Volume:38 ,  Issue: 1 )