Re: OT: Snowy Hydro

From	Sylvia Else <sylvia@not.at.this.address>
Newsgroups	aus.electronics
Subject	Re: OT: Snowy Hydro
Date	2017-03-17 14:45 +1100
Message-ID	<ej14f6FothjU1@mid.individual.net> (permalink)
References	(1 earlier) <7822f04d-f48f-43d5-9d76-6d597b0c0d40@googlegroups.com> <eiv0ucFbnndU1@mid.individual.net> <fa659db0-d884-4d49-90dd-363611b5089f@googlegroups.com> <ej0m0tFmg2bU1@mid.individual.net> <58cb5956$0$1389$c3e8da3$1cbc7475@news.astraweb.com>

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On 16/03/2017 10:24 PM, Clifford Heath wrote:
> On 17/03/17 10:39, Sylvia Else wrote:
>> On 17/03/2017 9:28 AM, Phil Allison wrote:
>>> Phil Allison wrote:
>>>
>>>>>
>>>>>> That aside, Snowy Hydro is energy limited, because there is only so
>>>>>> much
>>>>>> water (less in extended dry spells). If it produces a higher power
>>>>>> output, it can do so for less time.
>>>>>>
>>>>>
>>>>>    ** The high lakes in the Snowy scheme get filled up at night.
>>>>>
>>>>>     With water from the lower ones.
>>>>>
>>>>>      It's a huge "water battery".
>>>>>
>>>>>>
>>>>>> Maybe the government intends to use the extra power generation only
>>>>>> during extreme demand to avert rolling blackouts.
>>>>>>
>>>>>
>>>>> ** It can do that, but more importantly it allows the storage of
>>>>> excess power in the grid at any time of day.
>>>>
>>>> There isn't an excess of power, there's only an excess of capacity.
>>>>
>>>
>>>   ** That is complete BOLLOCKS.
>>>
>>>   Excess power generation occurs all the time, whenever the load drops.
>>
>> Power generation equals power consumption, second by second, always.
>
> No. Not if you measure power as heat generated in the coal-fired boilers
> and consumption as power extracted from the generators.

That doesn't seem a very sensible measure of generation, since some of 
the heat is unavoidably lost due to the laws of thermodynamics.

>
> The heat production has a huge time-constant - like 24 hours - so you
> cannot simply increase heat for each daily power peak. You have to run
> with enough for the peak, and waste or store the extra in-between.

Coal fired generators are run with very slow changes in power output for 
that reason. Variations in overall load are handled by other generation 
with quicker response times.

Sylvia.

Thread

OT: Snowy Hydro Sylvia Else <sylvia@not.at.this.address> - 2017-03-16 15:12 +1100
  Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-16 16:39 +1100
    Re: OT: Snowy Hydro Chris <c@b.a> - 2017-03-17 14:33 +1100
      Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-17 20:29 +1100
        Re: OT: Snowy Hydro F Murtz <haggisz@hotmail.com> - 2017-03-17 21:20 +1100
          Re: OT: Snowy Hydro Phil Allison <pallison49@gmail.com> - 2017-03-17 04:12 -0700
          Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-17 23:12 +1100
            Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-19 22:00 +1000
              Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-20 08:18 +1100
                Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-20 08:53 +1100
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-20 20:47 +1000
              Re: OT: Snowy Hydro Gordon Levi <gordon@address.invalid> - 2017-03-21 16:47 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-27 19:41 +1100
                Re: OT: Snowy Hydro Xeno <xenolith@optusnet.com.au> - 2017-03-28 00:02 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-28 03:30 +1100
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-28 15:43 +1000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-28 17:24 +1100
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-28 22:09 +1000
                Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-28 08:27 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-28 11:06 +1100
                Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-28 11:21 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-28 13:28 +1100
                Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-28 15:22 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-28 17:19 +1100
                Re: OT: Snowy Hydro Lucifer Morningstar <Barry@saymyname.com> - 2017-03-28 17:28 +1100
                Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-29 16:44 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-29 20:16 +1100
                Re: OT: Snowy Hydro Chris Jones <lugnut808@spam.yahoo.com> - 2017-03-28 22:06 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-29 05:20 +1100
                Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-29 06:06 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-29 09:34 +1100
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-29 22:00 +1000
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-28 22:37 +1000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-29 05:21 +1100
                Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-29 06:07 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-29 09:35 +1100
                Re: OT: Snowy Hydro Jasen Betts <jasen@xnet.co.nz> - 2017-03-28 19:21 +0000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-29 09:37 +1100
                Re: OT: Snowy Hydro Jasen Betts <jasen@xnet.co.nz> - 2017-03-29 04:43 +0000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-29 19:21 +1100
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-29 21:52 +1000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-30 03:14 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-29 10:53 +1100
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-29 21:53 +1000
                Re: OT: Snowy Hydro F Murtz <haggisz@hotmail.com> - 2017-03-29 22:48 +1000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-30 03:17 +1100
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-31 20:01 +1000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-04-01 05:03 +1100
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-04-01 20:01 +1000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-04-02 03:01 +1000
                Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-04-02 14:55 +1000
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-04-02 16:06 +1000
                Re: OT: Snowy Hydro Gordon Levi <gordon@address.invalid> - 2017-03-28 14:53 +1100
                Re: OT: Snowy Hydro "Rod Speed" <rod.speed.aaa@gmail.com> - 2017-03-28 16:44 +1100
                Re: OT: Snowy Hydro Xeno <xenolith@optusnet.com.au> - 2017-03-28 18:42 +1100
  Re: OT: Snowy Hydro Phil Allison <pallison49@gmail.com> - 2017-03-16 00:07 -0700
    Re: OT: Snowy Hydro Phil Allison <pallison49@gmail.com> - 2017-03-16 00:51 -0700
    Re: OT: Snowy Hydro Sylvia Else <sylvia@not.at.this.address> - 2017-03-16 19:33 +1100
      Re: OT: Snowy Hydro Trevor Wilson <trevor@SPAMBLOCKrageaudio.com.au> - 2017-03-16 19:40 +1100
        Re: OT: Snowy Hydro Sylvia Else <sylvia@not.at.this.address> - 2017-03-16 19:55 +1100
          Re: OT: Snowy Hydro Adrian Jansen <adrian@qq.vv.net> - 2017-03-17 07:38 +1000
        Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-16 22:12 +1000
      Re: OT: Snowy Hydro Jasen Betts <jasen@xnet.co.nz> - 2017-03-16 10:04 +0000
      Re: OT: Snowy Hydro Phil Allison <pallison49@gmail.com> - 2017-03-16 15:28 -0700
        Re: OT: Snowy Hydro Sylvia Else <sylvia@not.at.this.address> - 2017-03-17 10:39 +1100
          Re: OT: Snowy Hydro Phil Allison <pallison49@gmail.com> - 2017-03-16 16:54 -0700
            Re: OT: Snowy Hydro Sylvia Else <sylvia@not.at.this.address> - 2017-03-17 11:06 +1100
              Re: OT: Snowy Hydro Phil Allison <pallison49@gmail.com> - 2017-03-16 17:24 -0700
                Re: OT: Snowy Hydro Sylvia Else <sylvia@not.at.this.address> - 2017-03-17 12:58 +1100
          Re: OT: Snowy Hydro Clifford Heath <no.spam@please.net> - 2017-03-16 22:24 +1100
            Re: OT: Snowy Hydro Sylvia Else <sylvia@not.at.this.address> - 2017-03-17 14:45 +1100
              Re: OT: Snowy Hydro Clifford Heath <no.spam@please.net> - 2017-03-16 22:42 +1100
    Re: OT: Snowy Hydro keithr0 <user@account.invalid> - 2017-03-16 22:17 +1000
      Re: OT: Snowy Hydro Clifford Heath <no.spam@please.net> - 2017-03-16 22:39 +1100

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