September 2013 New Haven Line power outage

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September 2013 New Haven Line power outage
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Passengers boarding shuttle buses during the service disruption
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Details
Date25 September 2013 (2013-09-25)
05:22 (EST)
Location Mount Vernon, New York
Coordinates 40°54′40″N73°49′45″W / 40.9112°N 73.8293°W / 40.9112; -73.8293
Country United States
Line New Haven Line
Operator Metro-North Railroad
CausePower outage
Statistics
Passengers125,000 daily weekday riders impacted for 12 days

The September 2013 New Haven Line power outage was an unplanned electrical power outage that impacted service on Metro-North Railroad's New Haven Line for twelve days in 2013. On September 25, 2013, a 138-kV main feeder cable from Con Edison that provided electricity to an AC catenary-powered 8-mile (13 km) segment of the New Haven Line failed, causing electric train service over the line to halt between Mount Vernon, New York and Harrison, New York. [1] [2] [3] [4] [5] [6]

Contents

Background

Metro-North Railroad's New Haven Line operates from New Haven, Connecticut, to Grand Central Terminal in New York City. The New Haven Line's ridership, at 125,000 weekday and 39 million annual passengers, ranks as the busiest rail line in the United States. [7]

In early September 2013, construction was underway at Metro-North Railroad's Mount Vernon station for replacement of existing power transformers with new transformers that would enable regenerative braking capability on the New Haven Line between the Mount Vernon station and the Harrison station. The New York Power Authority was assisting Metro-North Railroad with oversight of the construction, which was being performed by contractors. Con Edison controlled power supply to the Metro-North Railroad station. [8] [9] [10]

Power failure

The other redundant feeder cable that supplied power to that segment was out-of-service due to a planned electric equipment upgrade at the Metro-North station. There was no formal contingency plan in place between Con Edison and Metro-North in case of the failure. An attempt to draw power from a Connecticut substation in Cos Cob failed to provide enough power to supply full service on the line, and was instead used to rescue stranded trains. Metro-North used diesel locomotives and alternative bus service to carry passengers until full service was restored after 12 days of disruption.

Con Edison initially provided this short-notice power by modifying available electric transformers and other equipment to Metro-North's unique power-consumption needs in an adjacent temporary location. Following the service disruptions, U.S. Senator Richard Blumenthal from Connecticut held a hearing on October 28, 2013, to find out what happened during the disruption. [11]

Findings and effects

In November 2014, the New York Public Service Commission released a public Executive Summary detailing findings from an investigation into the event. The outage was caused by liquid nitrogen, which was being used to control dielectric fluid flow in the out-of-service feeder, freezing the dielectric fluid in the adjacent live feeder supplying the sole power to the station. Con Edison had performed this type of freeze operation around 18 times a year, and had never experienced this type of failure before.

The Cos Cob link is now able to provide full service power if needed. The monitoring of the use of liquid nitrogen in underground transmission feeders has been modified. There was a short term interest in examining n-1-1 power supply contingencies to various municipal power consumers following the incident. [12] [13] [14]

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References

  1. Flegenheimer, Matt (25 September 2013). "Power Failure Disrupts Metro North's New Haven Line; May Last Days". New York Times. Retrieved 7 November 2018.
  2. Flegenheimer, Matt (4 October 2013). "Metro-North to Resume Full Service on Monday". New York Times. Retrieved 7 November 2018.
  3. Flegenheimer, Matt; McGeehan (30 September 2013). "Con Edison May Have Caused Metro-North Line's Power Loss". New York Times. Retrieved 7 November 2018.
  4. Flegenheimer, Matt (29 September 2013). "2 Senators Call for Inquiry Into Metro-North Disruption". New York Times. Retrieved 7 November 2018.
  5. Flegenheimer, Matt (3 October 2017). "Metro-North, Star of the Rails, Stumbles in a Rough Year". New York Times. Retrieved 7 November 2018.
  6. Flegenheimer, Matt (26 September 2018). "Frustration Mounts Over Metro-North Line's Woes". New York Times. Retrieved 7 November 2018.
  7. "Getting Back on Track: Unlocking the Full Potential of the New Haven Line" (PDF). Regional Plan Association. January 2014. Retrieved April 29, 2014.
  8. Branch, Alfred (April 18, 2014). "Metro-North to Make Power Upgrades on New Haven Line in New Rochelle, Pelham". patch.com. Retrieved December 8, 2018.
  9. "New Haven Line Power Upgrade Continues (MTA Press Release)". www.mta.info. May 14, 2014. Retrieved December 8, 2018.
  10. penneyvanderbilt (June 2, 2014). "Metro-North New Haven Line Power Upgrade Continues". penneyvanderbilt.wordpress.com. Retrieved December 8, 2018.
  11. "- Power Outage on Metro-North's New Haven Line: How to Prevent Future Failures Along Passenger Rail's Busiest Corridor".
  12. "Full New Haven Line Service To Resume Monday Morning". Metropolitan Transportation Authority. October 5, 2013. Retrieved April 29, 2014.
  13. "Investigation of the September 2013 Electric Outage of a Portion of Metro-North Railroad's New Haven Line (case no. 13-E-0529)". documents.dps.ny.gov. New York State Public Service Commission. November 2014. Retrieved December 8, 2018.
  14. NYSPSC case no. 13-E-0529