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Post by WSD3 on Jan 13, 2020 21:08:19 GMT
Route 85,156,220,
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Post by hangerlane on Jan 14, 2020 11:31:32 GMT
All of this is very well if it is only theory. Has the technology come far enough to enable the buses to run all day without running out of charge? Can the garages be fitted with enough charging points? Can the electricity supply cope?
I heard that Stagecoach got a small fleet of electrics for the Guildford Park and Ride. They found that they couldn't recharge them overnight as the charging rate wasn't fast enough. They had to fit a large UPS (uninteruptable power supply) to store energy during the day, and use that to aid overnight recharging. I don't know how many buses they use, but if they can't cope with a dozen or so, how can the large garages cope? Electrics are a good idea in principle, but the tech has a long way to go before universal use is practical.
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Post by snowman on Jan 14, 2020 11:47:32 GMT
All of this is very well if it is only theory. Has the technology come far enough to enable the buses to run all day without running out of charge? Can the garages be fitted with enough charging points? Can the electricity supply cope? I heard that Stagecoach got a small fleet of electrics for the Guildford Park and Ride. They found that they couldn't recharge them overnight as the charging rate wasn't fast enough. They had to fit a large UPS (uninteruptable power supply) to store energy during the day, and use that to aid overnight recharging. I don't know how many buses they use, but if they can't cope with a dozen or so, how can the large garages cope? Electrics are a good idea in principle, but the tech has a long way to go before universal use is practical. Half right about Guildford, there are 9 buses (4 services of 2 buses + a spare) Wasn't the speed of the chargers, it was weakness of local power supply (the depot is semi rural on edge of urban area) which didn't allow enough amps. It was cheaper to put in an electricity storage unit than upgrade the supply to the depot. That way the existing weak supply could be used by spreading the charging over much longer. Virtually every garage will need improved supply cables and bigger substation (although won't need diesel storage tank and pumps). I think it was estimated that nighttime charging will require about 4 large power stations to supply London. Unlike Scotland which has 50% renewable electricity, apparently TfL is one of the worst for renewable at only 0.05% of its electricty consumption from renewables |
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Post by snowman on Jan 14, 2020 11:59:39 GMT
Just had a check and appears 28 electric buses are involved in a trial, where they can boost the local supply whilst plugged in. All to do with uneven consumption at different times of day and night, and they can provide a short term export of power during their charging time www.sseutilitysolutions.co.uk/products/bus2grid-2/e-Bus Depot Capability to provide Grid Support Typical fully electrified bus depots could provide around 2-10 MW firm availability for overnight grid services and could participate in National Grid FFR and DNO services UK Power Networks launched last year its Flexibility Roadmap as a first step to release DNO benefits and creating a local flexibility market. It has also launched flexibility tenders through Piclo platform Fixed vehicle schedules offer very predictable periods of demand and connected storage Electric bus depots as a source of energy and power can provide 300kWh per bus and 40 kW export capacity per charging point for around 120 buses per depot (London average). With V2G technology the potential could provide huge increases: 36MWh per depot and 4.8MW per depot. |
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Deleted
Deleted Member
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Post by Deleted on Jan 14, 2020 14:28:44 GMT
Surely not every existing bus garage in London is going to be suitable for widespread electric conversion.
Where I work we have a fleet of electric BMWs. It is a 24/7 style operation.
They are great to drive.
However they can't be used 24/7.
As such we still have petrol and diesel vehicles.
Not enough charge points installed.
I am presuming having electrics limits the capacity of the garage as well?
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Post by southlondonbus on Jan 14, 2020 21:34:11 GMT
At 15 miles long and a long dead run from MB to Crystal palace I an see the 358 being a real test for the electrics.
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Post by LT 20181 on Jan 14, 2020 22:02:52 GMT
At 15 miles long and a long dead run from MB to Crystal palace I can see the 358 being a real test for the electrics. I think it would depend on what electric bus type Metrobus decide to settle for. There are those like the ADL/BYD ones that hold their drink rather well, and then there are those like the Optares which don’t as much |
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Post by southlondonbus on Jan 14, 2020 22:38:22 GMT
My guess being Go ahead they will follow on from the 507/521/153/214 and 488 with BYDs.
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Post by LT 20181 on Jan 14, 2020 22:39:49 GMT
My guess being Go ahead they will follow on from the 507/521/153/214 and 488 with BYDs. 444*, not 488  |
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Post by southlondonbus on Jan 14, 2020 22:40:52 GMT
Yes of course 444.
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mr24
Conductor
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Post by mr24 on Jan 14, 2020 22:47:05 GMT
I am really looking forward to the 444 with electrics, it will be the first real thrashy route we get with electric buses, which I am sure will be extremely entertaining, I think the electric buses will actually really suit the fast nature of the route.
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Post by southlondonbus on Jan 14, 2020 22:49:55 GMT
Yes I'm waiting for a proper fast ride. Yet ti really find one on the red arrows or the central london routes. 358 would be a new experience aswell south of TB.
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Post by COBO on May 30, 2020 1:06:35 GMT
52 and 111.
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Post by MetrolineGA1511 on May 30, 2020 8:13:29 GMT
I had been disappointed at routes 83 & 483 receiving 2-year extensions and missing out on VMHs and smart hybrids respecitvely. This assumes route 83 staying with Metroline and route 483 awarded to Abellio. However, now that their contracts have been extended I hope they gain BDEs and Caetano electric double-decks in 2023.
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Post by rif153 on Jun 3, 2020 16:31:50 GMT
I had been disappointed at routes 83 & 483 receiving 2-year extensions and missing out on VMHs and smart hybrids respecitvely. This assumes route 83 staying with Metroline and route 483 awarded to Abellio. However, now that their contracts have been extended I hope they gain BDEs and Caetano electric double-decks in 2023. That would be fantastic if it happened. I've made no secret on not being a fan of VWs so I can't wait for the 483 to get new buses. |
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