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Re: Recent derailments - Metro North
Author: George Andrews
Date: 12-05-2013 - 12:59
Dr. Zarkoff wrote :
"Regenerative braking won't work if there is no load elsewhere on the [trolley] wire or 3rd rail."
If this is true, how was Milwaukee Road able to use regenerative braking on its' Lines West electric locomotives ??? Milwaukee Road Lines West was noted for its' low traffic levels that often resulted in only one train " on the grid " or substation at any one time. I have read in Noel Holley's Milwaukee Electrics book that when a train was using regenerative braking on a down - hill grade with no other trains nearby, the Electric Useage meters in the substation would actually run backwards, as the electricity ran back into the power grid. According to the book, the RR would only be billed from either Montana Power, Wash. Public Power, or Puget Power for the NET power it used from month to month. Is it indeed possible for electric current to run through a substation in either direction ???
"Regenerative braking won't work if there is no load elsewhere on the [trolley] wire or 3rd rail."
If this is true, how was Milwaukee Road able to use regenerative braking on its' Lines West electric locomotives ??? Milwaukee Road Lines West was noted for its' low traffic levels that often resulted in only one train " on the grid " or substation at any one time. I have read in Noel Holley's Milwaukee Electrics book that when a train was using regenerative braking on a down - hill grade with no other trains nearby, the Electric Useage meters in the substation would actually run backwards, as the electricity ran back into the power grid. According to the book, the RR would only be billed from either Montana Power, Wash. Public Power, or Puget Power for the NET power it used from month to month. Is it indeed possible for electric current to run through a substation in either direction ???
