Blitzeinschlagsanalyse für rückwärtige Überschläge einer Hybridleitung
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Date
2015-01-14
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Abstract
A new method to transfer energy over short and long
distances is to use hybrid lines. In this paper a lightning surge
analysis for backflashovers on overhead transmission lines with
one DC and three AC systems on the same tower is considered.
Lightning strikes are the most common source of failures on
transmission systems and are not considered for hybrid lines.
The main aim is to get essential information about the behavior
of the HVDC system due to a backflashover. We simulate a
lightning stroke into a hybrid line using EMTP-ATP. The results
clearly show that the 110-kV AC systems provide protective
effects for the HVDC system. Therefore, it is concluded that
the backflashover performance of HVDC systems is better on
AC/DC hybrid lines, compared to identically constructed towers
with just one HVDC system installed.
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Keywords
backflashover, EMTP-ATP, transmission tower model, hybrid line, lightning surge analysis