Rail

London Underground use of Alstom energy recovery system lauded

Posted on March 17, 2016

London Underground screenshot.
London Underground screenshot.

Alstom and London Underground have won two awards1 in the last month for Hesop, Alstom’s advanced reversible power-supply substation. It has been in commercial service at the Cloudesley Road station for a year to serve the London Underground’s Victoria Line. Designed to deliver energy efficiency, Hesop also reduces infrastructure investment, limits CO2 emissions and decreases the temperature within the metro network.

Hesop works by converting and transferring any unused power, generated by the trains during braking, to the medium voltage loop for re-use within the network. The control system ensures that the energy is recovered via the most efficient route that the infrastructure will permit. Hesop allows to recover more than 99% of the traction energy generated during braking — which is usually lost, thereby reducing CO2 emissions through reduced energy consumption.



London Underground’s tunnels being small, most of the heat produced by the trains stays in the tunnel and surroundings. Hesop enables to reduce the number of braking resistors and therefore reduces tunnel heating by removing the heat source. Cooling equipment along the system can thereby be further optimized and the Tube becomes cooler without huge investments for additional equipment, such as ventilation shafts, according to Alstom officials.

“Should Hesop be installed more widely across the Underground, there are huge potential benefits in both energy reduction and also in relation to tunnel cooling, which I’m sure would be welcomed by commuters,” said Terence Watson, Alstom Managing Director in the UK & Ireland

Hesop benefits from four years of experience on the Paris tramway T1 line. Upcoming implementations include the Milan tramway and metro, Riyadh metro, Sydney tramway and Panama metro. 109 Hesop substations have been sold by Alstom so far.
 
(1) Alstom and London Underground won awards this year from both Railway Industry Awards and Transport Times in the UK.
 

View comments or post a comment on this story. (0 Comments)

More News

MBTA improves real-time information for subway service

Using more sophisticated data to generate better predictions, and train arrival times are now refreshed every six seconds.

Charlotte's new light rail extension increases rail ridership by 48%

With the opening of the extension, the LYNX Blue Line now connects one side of Charlotte to the other.

Report suggests merging LIRR, NJ Transit, and Metro-North

The "Trans-Regional Express," or "T-REX," would connect the systems to greatly cut travel times and increase capacity on rail lines that will only see more strain as the area's population grows.

Retlif Testing Laboratories celebrating 40 years

A globally recognized testing industry leader, the company expanded from humble beginnings at Flowerfield (St. James, N.Y.) to multiple locations, including its state-of-the-industry HQ and testing facility in Ronkonkoma, N.Y

Gannett Fleming/WSP JV to manage N.C. light rail construction

The 17.7-mile light -rail system will have 18 stations between UNC Hospitals in Chapel Hill and North Carolina Central University in Durham.

See More News

Post a Comment

Post Comment

Comments (0)

More From The World's Largest Fleet Publisher

Automotive Fleet

The Car and truck fleet and leasing management magazine

Business Fleet

managing 10-50 company vehicles

Fleet Financials

Executive vehicle management

Government Fleet

managing public sector vehicles & equipment

TruckingInfo.com

THE COMMERCIAL TRUCK INDUSTRY’S MOST IN-DEPTH INFORMATION SOURCE

Work Truck Magazine

The number 1 resource for vocational truck fleets

Schoolbus Fleet

Serving school transportation professionals in the U.S. and Canada

LCT Magazine

Global Resource For Limousine and Bus Transportation

Please sign in or register to .    Close