Klickitat PUD says a fire inside a substation was the cause of a power outage in the Alderdale area on Wednesday.  The outage occurred around 9 a.m.  A fire inside the Collins substation resulted from damage to equipment and Alderdale Road was temporarily closed down as a safety precaution.  PUD crews worked through the night and restored power back to customers around 2:30 Thursday morning.  Due to the significant damage to the substation, field personnel constructed temporary structures that will stay in place until permanent repairs can be made.  This morning there was a failure with a connector on the transmission line in that area.  Klickitat PUD crews located the issue and completed the necessary repairs.  Power was restored at 10:30 a.m.