over9k
So I didn't tell my wife, but I...
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I'm more into generation and some small scale distribution in islanded country towns, @Smurf1976 is the man when it comes to grid size distribution and energy flows.@sptrawler would be the man to ask about how the grid needs to change. I would guess it would actually be a lot better to have a higher baseload so there's less difference/change in draw over the 24 hour cycle but I'm only guessing.
In theory totally agreed.Simply adjusting power prices appropriately for peak vs off peak (or even three tiers) will make people self smart-charge.
Origin Energy has called for governments to provide incentives for electric car smart chargers in garages to prevent motorists plugging in en masse during the peak evening demand period
In theory totally agreed.
In practice I'm not convinced.
Reason being that data available thus far shows that, whilst EV's are not yet common, the typical scenario is that the owner arrives home, plugs it in and it charges straight away. That's what's ringing the alarm bells since for rather a lot of consumers that time just happens to be right on the existing peak in electricity demand which is the issue.
Broadly speaking the electricity industry has similar concerns. Some network operators have engaged in a collective trial of an automated "smart" approach, in other cases retailers are trying to do it via pricing and so on.
Overall though there's significant concern and I'm not the only one with it: https://www.theage.com.au/business/...-needed-to-drive-ev-boom-20210621-p582tg.html
The basic problem being that charging at ~6pm is the "natural" thing many will do, plug it in when they get home, but that's far from ideal given that to the extent there's spare capacity in existing infrastructure, it's primarily late at night and during the middle of the day.
It's an absolutely solvable problem I agree but, as with Origin and quite a few others, I do have concerns about getting consumers to actually do it.
In reality when people get home and plug in is exactly when the system needs the EV's storage, so software needs to be developed to take a percentage of the BEV's storage, that is the software energy companies have to develop.The best transmission grid software for BEV charging control and suitable charging infrastructure needs to be sorted and in service, before BEV's become mainstream.
Sure but that's at current prices.In theory totally agreed.
In practice I'm not convinced.
Reason being that data available thus far shows that, whilst EV's are not yet common, the typical scenario is that the owner arrives home, plugs it in and it charges straight away. That's what's ringing the alarm bells since for rather a lot of consumers that time just happens to be right on the existing peak in electricity demand which is the issue.
Broadly speaking the electricity industry has similar concerns. Some network operators have engaged in a collective trial of an automated "smart" approach, in other cases retailers are trying to do it via pricing and so on.
Overall though there's significant concern and I'm not the only one with it: https://www.theage.com.au/business/...-needed-to-drive-ev-boom-20210621-p582tg.html
The basic problem being that charging at ~6pm is the "natural" thing many will do, plug it in when they get home, but that's far from ideal given that to the extent there's spare capacity in existing infrastructure, it's primarily late at night and during the middle of the day.
It's an absolutely solvable problem I agree but, as with Origin and quite a few others, I do have concerns about getting consumers to actually do it.
All good on paper and principle,but can it possibly work? I have serious doubtWhich is what I was alluding to.
In reality when people get home and plug in is exactly when the system needs the EV's storage, so software needs to be developed to take a percentage of the BEV's storage, that is the software energy companies have to develop.
The chargers have to be smart enough to be able to work off an app, that may work like this: O.K how much of your EV storage are you prepared to allocate tonight e.g 20%, 30% etc (there has to be an emergency stop function), then when the EV is plugged in that much is available. If the battery is too low, the customer is charged a penalty rate.
But the app will have to be able to be responsive to live time data changes eg if I may need to take the wife to hospital tonight cancel the allocation, so the chargers and the software has to be very smooth, not clunky as is usually supplied by the lowest tender.
It is going to be critical that real time monitoring and a very clever application is developed, this is how the grid will evolve to renewables IMO.
Also the very reason I say we have to get it right first time, it will be a cluster fluck, if this isn't done right, unlike the E.U we don't have an extension cord to other countries grid systems.
Also the reason why not going headlong into it, is going to end up with a much better outcome IMO, this could actually make Australia at the forefront of EV integration if done well.
Just my thoughts.
What i mean to say is that replacing the whole ice fleet with ev for environmental reason is a pipe dream, both in term of infrastructure, electric energy production and current battery components.So the way it will go:
The grid will collapse and the uber green vegan EV toorak tractors and Tesla will be blamed and scratched,while the commoners leaf style EV will be stuck at home with flat batteries
Charging doesn’t have to begin when the car is first plugged in though.In theory totally agreed.
In practice I'm not convinced.
Reason being that data available thus far shows that, whilst EV's are not yet common, the typical scenario is that the owner arrives home, plugs it in and it charges straight away. That's what's ringing the alarm bells
Charging doesn’t have to begin when the car is first plugged in though.
for example I just got home now and plugged my car in, but it isn’t programmed to begin charging until tomorrow at 9am.
with Tesla’s you pick what ever charge time you want, and that’s when the car begins charging.
Eg. you can set it to start charging at say 11pm when you know that your provider gives you cheap rates, and then it doesn’t matter if you plug it in at 5pm when you get home, because it won’t start charging till 11pm.
Or you can set it to finish charging at a certain time eg 6am in the morning, the car will then calculate what time it needs to begin charging to make sure it finishes at exactly 6am for you, so if it only needs 2 hours to charge it will begin at 4am if it needs 5 hours it will begin at 1 am etc.
That is what smurf and I are talking about.so another strategy could be that smart chargers controlled by the energy company could not only control when cars begin charging, but could speed up or slow down charge rates as needed to manage the demand.
No argument there on the technical side.Charging doesn’t have to begin when the car is first plugged in though.
It will, but the smart charging infrastructure is only just starting to be developed, Origin and AGL have only recently commenced trails, if you read back through the thread.I know I keep labouring this point, but I just don't see how the right pricing structure and a smart charger wouldn't solve this?
A smart charger and associated pricing structure would solve it yes.I know I keep labouring this point, but I just don't see how the right pricing structure and a smart charger wouldn't solve this?
Yes but that's at current price structure/scheduling no?A smart charger and associated pricing structure would solve it yes.
What the problem is, is summed up by Origin's research finding that 60% of existing EV users aren't actually doing that, they're just using a "dumb" charger that charges there and then and doing so most commonly during the evening when electricity demand for other uses is high.
That bit is what rings the alarm bells on the technical side. If that 60% continues to be the case as EV's become mainstream well the existing infrastructure is nowhere near adequate to cope without major upgrades being done.
How to get the 40% of consumers choosing a smarter approach to become the vast majority, in an environment where the focus of consumers is on lower priced options (smart chargers aren't cheap) and the entire issue is engulfed in politics, is what has thus far been the problem.
My argument isn't one against EV's but it's about how society can get the maximum benefits from them.
Off peak is 9pm-7am, so I just plug the car in with a timer on the switch to run between those times, the end?It will, but the smart charging infrastructure is only just starting to be developed, Origin and AGL have only recently commenced trails, if you read back through the thread.
How to get the 40% of consumers choosing a smarter approach to become the vast majority,
I didn’t expect the article link to prompt so much debate...Legislative requirement ?
Mr Smurf,I didn’t expect the article link to prompt so much debate...
If the law permitted forcing consumers onto time-based pricing then almost certainly that would lead to a lot more choosing to charge their EV at times when it creates no issues. It brings about the price-induced fix referred to.
The problem at the moment however is that the majority are on flat rates, same price anytime, and in most of the country the law doesn't allow a distributor or retailer to force a change unless the consumer wants it. Some exceptions but in general that’s the case.
As per the research, a large portion of consumers aren't choosing to change of their own accord and therein lies the problem.
The issue is ridiculously simple to resolve but not actually being resolved. Hence the calls for action - but the trouble is the politics surrounding EV's isn't ideal there which complicates what ought to be straightforward.
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