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

Metra adds state funding for 2 new rail stations

The two stations have been planned for years, however, funding was first held up in the state’s budget woes and then cut in 2017.

Report suggests Cleveland should replace entire rail fleet by 2028

While both fleets have had some level of mid-life rehabilitation, each fleet is exceeding the acceptable 30-year useful life for railcars.

Valley Metro rail extension gets FTA approval to enter engineering

The approval moves the project forward in the capital grants program.

Sound Transit rail extension moves into next phase

In the coming months, the agency will continue intensive work to advance its federal grant application.

Senators threaten to withhold WMATA funds if it selects Chinese railcars

CRRC is actively pursuing a WMATA contract likely to exceed $1 billion to build up to 800 of its new 8000-series railcars.

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