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Electric buses at waterloo
There was an article in the Evening Standard last night about the bus garage
near waterloo that has europes largest fleet of battery electric buses. Apparently they had to install their own "generator". Now knowing the quality of journalism in the standard I wonder if they meant generator or substation because if its the former it completely defeats the point of having electric buses in central london if a generator is just shoving out diesel fumes in their place (and probably more due to inefficiencies with battery charging). Anyone know which it is? |
Electric buses at waterloo
On Thursday, July 12, 2018 at 3:04:30 PM UTC+1, wrote:
There was an article in the Evening Standard last night about the bus garage near waterloo that has europes largest fleet of battery electric buses. Apparently they had to install their own "generator". .... I read that article too, according to this press release (link below) from 2016 the charging power comes from the grid. Not a local generator. https://www.ukpowernetworks.co.uk/in...n.html#art-top |
Electric buses at waterloo
On Thu, 12 Jul 2018 08:10:30 -0700 (PDT)
John Leach wrote: On Thursday, July 12, 2018 at 3:04:30 PM UTC+1, wrote: There was an article in the Evening Standard last night about the bus garage near waterloo that has europes largest fleet of battery electric buses. Apparently they had to install their own "generator". .... I read that article too, according to this press release (link below) from 2016 the charging power comes from the grid. Not a local generator. https://www.ukpowernetworks.co.uk/in...s-releases/Ele ctric-buses-are-breath-of-fresh-air-for-London.html#art-top I suspected it would be something like that. Installing a generator would seem to defeat the point of having electric buses. |
Electric buses at waterloo
On 12/07/2018 16:21, wrote:
On Thu, 12 Jul 2018 08:10:30 -0700 (PDT) John Leach wrote: On Thursday, July 12, 2018 at 3:04:30 PM UTC+1, wrote: There was an article in the Evening Standard last night about the bus garage near waterloo that has europes largest fleet of battery electric buses. Apparently they had to install their own "generator". .... I read that article too, according to this press release (link below) from 2016 the charging power comes from the grid. Not a local generator. https://www.ukpowernetworks.co.uk/in...s-releases/Ele ctric-buses-are-breath-of-fresh-air-for-London.html#art-top I suspected it would be something like that. Installing a generator would seem to defeat the point of having electric buses. Not necessarily. A combined heat and power system could work out both more efficient and less polluting than 50-odd diesel engines running most of the time at far from peak efficiency. -- Robin reply-to address is (intended to be) valid |
Electric buses at waterloo
wrote:
On Thu, 12 Jul 2018 08:10:30 -0700 (PDT) John Leach wrote: On Thursday, July 12, 2018 at 3:04:30 PM UTC+1, wrote: There was an article in the Evening Standard last night about the bus garage near waterloo that has europes largest fleet of battery electric buses. Apparently they had to install their own "generator". .... I read that article too, according to this press release (link below) from 2016 the charging power comes from the grid. Not a local generator. https://www.ukpowernetworks.co.uk/in...s/press-releas es/Ele ctric-buses-are-breath-of-fresh-air-for-London.html#art-top I suspected it would be something like that. Installing a generator would seem to defeat the point of having electric buses. For a more detailed view see Ian Visits https://www.ianvisits.co.uk/blog/2018/06/26/do-londoners-dream-of-electric-buses/ "They also needed 2.5 megawatts of electricity to recharge the buses overnight — although the use of smart monitoring means they never reach that full load. In comes 11,000 volts to two new substations on the site, which is then dropped down to 400 volts and sent via two routes to the various charging points around the depot. Four fast chargers at 800 volts are also available if needed." -- Mark |
Electric buses at waterloo
In message , at 22:59:39 on
Thu, 12 Jul 2018, Mark Bestley remarked: wrote: On Thu, 12 Jul 2018 08:10:30 -0700 (PDT) John Leach wrote: On Thursday, July 12, 2018 at 3:04:30 PM UTC+1, wrote: There was an article in the Evening Standard last night about the bus garage near waterloo that has europes largest fleet of battery electric buses. Apparently they had to install their own "generator". .... I read that article too, according to this press release (link below) from 2016 the charging power comes from the grid. Not a local generator. https://www.ukpowernetworks.co.uk/in...s/press-releas es/Ele ctric-buses-are-breath-of-fresh-air-for-London.html#art-top I suspected it would be something like that. Installing a generator would seem to defeat the point of having electric buses. For a more detailed view see Ian Visits https://www.ianvisits.co.uk/blog/201...dream-of-elect ric-buses/ "They also needed 2.5 megawatts of electricity to recharge the buses overnight — although the use of smart monitoring means they never reach that full load. In comes 11,000 volts to two new substations on the site, which is then dropped down to 400 volts and sent via two routes to the various charging points around the depot. 2.5 megawatts at 400 volts is 6,250 amps! But I suppose it's only one and a half Eurostars. Four fast chargers at 800 volts are also available if needed." -- Roland Perry |
Electric buses at waterloo
On 13/07/2018 08:09, Roland Perry wrote:
In message , at 22:59:39 on Thu, 12 Jul 2018, Mark Bestley remarked: In comes 11,000 volts to two new substations on the site, which is then dropped down to 400 volts and sent via two routes to the various charging points around the depot. 2.5 megawatts at 400 volts is 6,250 amps! But I suppose it's only one and a half Eurostars. Not even a quarter of a Eurostar. They draw 16 megawatts flat out. Another good argument against HS2, as a normal train only draws a quarter of that. -- Tciao for Now! John. |
Electric buses at waterloo
In message , at 08:57:53 on Fri, 13
Jul 2018, John Williamson remarked: On 13/07/2018 08:09, Roland Perry wrote: In message , at 22:59:39 on Thu, 12 Jul 2018, Mark Bestley remarked: In comes 11,000 volts to two new substations on the site, which is then dropped down to 400 volts and sent via two routes to the various charging points around the depot. 2.5 megawatts at 400 volts is 6,250 amps! But I suppose it's only one and a half Eurostars. Not even a quarter of a Eurostar. They draw 16 megawatts flat out. Only on 25kV, look again at its consumption on DC, and it's the amps I'm highlighting anyway. -- Roland Perry |
Electric buses at waterloo
On Thu, 12 Jul 2018 17:03:47 +0100
Robin wrote: On 12/07/2018 16:21, wrote: On Thu, 12 Jul 2018 08:10:30 -0700 (PDT) John Leach wrote: On Thursday, July 12, 2018 at 3:04:30 PM UTC+1, wrote: There was an article in the Evening Standard last night about the bus garage near waterloo that has europes largest fleet of battery electric buses. Apparently they had to install their own "generator". .... I read that article too, according to this press release (link below) from 2016 the charging power comes from the grid. Not a local generator. https://www.ukpowernetworks.co.uk/in...s-releases/Ele ctric-buses-are-breath-of-fresh-air-for-London.html#art-top I suspected it would be something like that. Installing a generator would seem to defeat the point of having electric buses. Not necessarily. A combined heat and power system could work out both more efficient and less polluting than 50-odd diesel engines running most of the time at far from peak efficiency. True, but don't forget you have battery charging losses. |
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