[OZAPRS] OT Re: smart meters ?

[Ray Wells]

When I worked in System Operations for a small County Council north of 
Sydney back in the mid 70's, there was sufficient waiting load from 
off-peak HWS heaters in the area served by the Woy Woy zone sub-station 
to trip the entire zone-substation through over-current. Mind you, it 
was only a 10MVA sub-station back then. Peak load on that sub-station 
was the off-peak load that came on about 9.30pm.

If we lost the sub-station at a critical time of night through, 
typically, a Pelican flying into the 33kv feeder to the sub-station, the 
only way to get the sub-station back on line was to restore one 11kv 
feeder at a time and run the Zellweger system to dump the off-peak load 
on that feeder and then proceed through enough feeders to be able to 
eventually restore load in a staged manner.

Ray vk2tv

On 11/12/10 22:59, Hamish Moffatt wrote:
> On Sat, Dec 11, 2010 at 09:37:01AM +1100, Dave Horsfall wrote:
>> On Sat, 11 Dec 2010, Shaun wrote:
>>
>>> It is about reducing the peak demand by either price incentives to not
>>> use electricity during peak times or to defer use into non peak times.
>>> In this way the network does not need to be engineered to support a peak
>>> load and can therefore be smaller in capacity to service a more steady
>>> load.  In this respect it is utilising the assets more effectively and
>>> hence saves network build, which I suppose could be green.
>> Given that households tend to cook in the morning and evening, and
>> industry runs during the day, I can't see much happening unless a lot of
>> people start working night-shift.
> Households can shift their dishwashing and probably their clothes
> washing till offpeak hours if they wish. I often run the washing machine
> overnight.
>
> Isn't it odd that one of the major criticisms of solar power is that it
> only works during the day, considering that that's when most of the demand is?
>
> Hamish
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