|
|
| Re: A new topic for discussion, electrification to Port Jeff and Patchague (1515836) | |||
 |
|||
| Home > SubChat | |||
|
[ Read Responses | Post a New Response | Return to the Index ] |
|
||
|
Re: A new topic for discussion, electrification to Port Jeff and Patchague |
|
|
Posted by WillD on Sat Jun 15 13:26:35 2019, in response to Re: A new topic for discussion, electrification to Port Jeff and Patchague, posted by SLRT on Sat Jun 15 12:55:43 2019. Why would the LIRR want to open up entire new maintenance categories to build and maintain overheadDC substations and their ancillary equipment are a drain on the capital and operational budget with their requirement for placement every mile. Completing electrification of the east end of the island with 3rd rail is too costly to contemplate, but leaving the low-use lines unelectrified leaves them at risk of abandonment at the next budget crunch. The lower marginal cost to install high voltage AC overhead means that electrification of the entire network can be economically justified. dual car equipment for the sake of electrifying snippets of the system? 126 out of 319 route miles are currently electrified. That's about 40% of the system. Admittedly in terms of track miles there's more of the network that's electrified, but the issue with DC electrification is the large amount of fixed hardware required to support the operation. AC electrification costs between two thirds and half what DC electrification costs, simply because you can do with four to six substations of $5-10 million what you'd need hundreds of DC substations at $1 million a pop. The island would end up electrified roughly 50/50 AC and DC. Don't they have enough on their plates simply dealing with the dual mode locomotives? I would think the scenario Mr. Reader is contemplating is one in which the LIRR chooses to retire the dual modes and replace them with multivoltage EMUs while completing the east end electrification. ConnDOT and MNRR have proven just how extremely reliable multivoltage EMUs can be. They have done so in stark contrast to failure of the LIRR's dual modes to bring "electric-like" operation to the east end of the island. The cost effective means by which to bring that convenience to the east end of the island is to electrify with AC OHLE and use the existing 3rd rail west of there. |
|
|
|