Analyses of Lightning Tolerance Level of 35 kV Collecting Lines in Mountain Area Wind Farms
This paper conducted analyses on tolerance against shielding failure of an actual wind farm's collecting line pole without arrester and with arrester installed at the bottom,through the transient analytic model established using ATP-EMTP software.It is can be concluded that the pole without arrester has relatively low tolerance to shielding failure,as the lightning current with large amplitude easily causes three-phase simultaneous trip.And the installation of arrester can enhance to a certain extent the wires'resistance to lightning twining strike.The paper also gave advices on protective measures which may be helpful for wind farms located in frequent-lightning areas.
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