| Author |
Voltage Graph of Grid Voltage Reduction in Ontario
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| RoughRider 2006-01-21, 10:21 pm |
| I've thrown a couple of graphs onto a web page for you to view. On January
19th, a province wide voltage reduction test of 5% was conducted. The
graphs indicate only a 3% reduction from 242 to 235V.
http://www.qsl.net/va3pla/Voltage.html
Enjoy!
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Depending on your local distribution system,
you may not even have seen any voltage change at all...
.... you might have line regulators that counter-act
the system voltage reduction.
Regards
>I've thrown a couple of graphs onto a web page for you to view. On January
>19th, a province wide voltage reduction test of 5% was conducted. The
>graphs indicate only a 3% reduction from 242 to 235V.
>http://www.qsl.net/va3pla/Voltage.html
>Enjoy!
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| RoughRider 2006-01-21, 11:21 pm |
| I should add that the observations were made in a small town that uses a
primary distribution voltage of 4.8kV. The town is fed directly from the
44kV grid typical of hundreds of other towns in the province.
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>I should add that the observations were made in a small town that uses a
>primary distribution voltage of 4.8kV. The town is fed directly from the
>44kV grid typical of hundreds of other towns in the province.
>
There really is no "typical" in Ontario.
The individual 44 kV line could be regulated beyond the substation ;
certain 4800 v distribution lines may be regulated ...
etc
Regards
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| Mr Wizzard 2006-01-22, 1:21 am |
|
"_jj_" <NOSPAMtabbertj@NOSPAMperth.net> wrote in message
news:2pu5t19f8l92aofbpsvs7q5aq80p1kccef@4ax.com...
>
>
>
>
> There really is no "typical" in Ontario.
> The individual 44 kV line could be regulated beyond the substation ;
> certain 4800 v distribution lines may be regulated ...
So how does the power company regulate 44kV lines,
and 4800 v lines ? Outside of the generators themselves
at the turbines (which I believe output 6.9kV) how do
they regulate any of it I wonder ? (post generator).
> etc
> Regards
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| Solar Flare 2006-01-22, 2:21 am |
| Some have pole top regulators. They look like long
75kVA cans with only high voltage lines in and out of
the top and no secondary terminals or wiring. There
will typically be a gauge looking dial on one side with
a 0 at the top and +25 at the 5 o'clock position
and -25 at the 7 o'clock position. These numbers and
description may vary from brand to brand.
This usage is common in rural applications to correct
long line voltage drops.
"Mr Wizzard" <wiz@muffy-mail.com> wrote in message
news:NdidneMh0fPljk7eRVn-vg@comcast.com...
>
> "_jj_" <NOSPAMtabbertj@NOSPAMperth.net> wrote in
message
> news:2pu5t19f8l92aofbpsvs7q5aq80p1kccef@4ax.com...
small town that uses a[color=darkred]
is fed directly from the[color=darkred]
the province.[color=darkred]
the substation ;[color=darkred]
....[color=darkred]
>
> So how does the power company regulate 44kV lines,
> and 4800 v lines ? Outside of the generators
themselves
> at the turbines (which I believe output 6.9kV) how do
> they regulate any of it I wonder ? (post generator).
>
>
>
>
>
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"_jj_" <NOSPAMtabbertj@NOSPAMperth.net> wrote in message
news:2pu5t19f8l92aofbpsvs7q5aq80p1kccef@4ax.com...
:
:
: >I should add that the observations were made in a small town
that uses a
: >primary distribution voltage of 4.8kV. The town is fed
directly from the
: >44kV grid typical of hundreds of other towns in the province.
: >
:
:
: There really is no "typical" in Ontario.
: The individual 44 kV line could be regulated beyond the
substation ;
: certain 4800 v distribution lines may be regulated ...
: etc
: Regards
Do you have a point with your irrelevant "observations"?
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| Mr Wizzard 2006-01-22, 2:21 pm |
|
"Solar Flare" <sfl@hutmail.notvalid> wrote in message
news:IvSdnfyNG8qngU7eRVn-rg@golden.net...
> Some have pole top regulators. They look like long
> 75kVA cans with only high voltage lines in and out of
> the top and no secondary terminals or wiring. There
> will typically be a gauge looking dial on one side with
> a 0 at the top and +25 at the 5 o'clock position
> and -25 at the 7 o'clock position. These numbers and
> description may vary from brand to brand.
Yer kidding!? Large pole-top "Variac's?" who-knew?
So someone's gotta climb the pole to crank the dial ?
Any idea how they work?
>
> This usage is common in rural applications to correct
> long line voltage drops.
>
> "Mr Wizzard" <wiz@muffy-mail.com> wrote in message
> news:NdidneMh0fPljk7eRVn-vg@comcast.com...
> message
> small town that uses a
> is fed directly from the
> the province.
> the substation ;
> ...
> themselves
>
>
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"Mr Wizzard" <wiz@muffy-mail.com> wrote in message
news:PqWdnbNK9NF_Xk7eRVn-pQ@comcast.com...
>
> "Solar Flare" <sfl@hutmail.notvalid> wrote in message
> news:IvSdnfyNG8qngU7eRVn-rg@golden.net...
>
> Yer kidding!? Large pole-top "Variac's?" who-knew?
> So someone's gotta climb the pole to crank the dial ?
> Any idea how they work?
>
I was waiting for permission to enter Paramount Studios in Hollyweird, CA.
Across the street from the front gate is a residential neighborhood. There
were pole top power correction cap banks that switched in and out
automatically. Some times with a fair "snap" sound. The distribution was
something like 5kV, not sure of the exact voltage that LA DWP uses.
As for the automatic operation equipment, I do not know for sure. I can
think of several ways to do it.
I know the utilities use voltage correction equipment at every substation in
the USA. At least everyone I have worked in. Mostly the western US.
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| Mr Wizzard 2006-01-22, 3:21 pm |
|
"SQLit" <sqlit@qwest.net> wrote in message
news:%SPAf.141$Ap5.11901@news.uswest.net...
>
> "Mr Wizzard" <wiz@muffy-mail.com> wrote in message
> news:PqWdnbNK9NF_Xk7eRVn-pQ@comcast.com...
>
> I was waiting for permission to enter Paramount Studios in Hollyweird, CA.
> Across the street from the front gate is a residential neighborhood. There
> were pole top power correction cap banks that switched in and out
> automatically. Some times with a fair "snap" sound. The distribution was
> something like 5kV, not sure of the exact voltage that LA DWP uses.
PF (Power Factor) correction capacitors are different from regulators, no?
>
> As for the automatic operation equipment, I do not know for sure. I can
> think of several ways to do it.
Short of changing taps on a taped transformer, how would you do it ?
>
> I know the utilities use voltage correction equipment at every substation
in
> the USA. At least everyone I have worked in. Mostly the western US.
But thats "Power Factor correction", thats not power "regulation" is it ?
>
>
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| Solar Flare 2006-01-22, 4:21 pm |
| In Ontario, we have these tiny little "Hydro Elves"
that cannot stand being cold. When they start to get
cold from living inside the tank with low voltage they
crawl onto the variac knob and heave-ho together and
give it a turn to increase the heat to their living
quarters on top of the poles. This gives the customers
a little more voltage.
If there isn't enough voltage to go around they remove
some spare "voltage" from the oil they have in storage
for the winter and put it in with the current voltage
to make up the difference.
This is all simple science and done by these actual
microscopic people. They have no magical powers like
Wizzards do.
"Mr Wizzard" <wiz@muffy-mail.com> wrote in message
news:PqWdnbNK9NF_Xk7eRVn-pQ@comcast.com...
>
> "Solar Flare" <sfl@hutmail.notvalid> wrote in message
> news:IvSdnfyNG8qngU7eRVn-rg@golden.net...
of[color=darkred]
with[color=darkred]
and[color=darkred]
>
> Yer kidding!? Large pole-top "Variac's?" who-knew?
> So someone's gotta climb the pole to crank the dial ?
> Any idea how they work?
>
>
correct[color=darkred]
news:2pu5t19f8l92aofbpsvs7q5aq80p1kccef@4ax.com...[color=darkred]
in a[color=darkred]
town[color=darkred]
in[color=darkred]
beyond[color=darkred]
regulated[color=darkred]
lines,[color=darkred]
how do[color=darkred]
generator).[color=darkred]
>
>
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They are not microscopic ... I've seen 'em.
>In Ontario, we have these tiny little "Hydro Elves"
>that cannot stand being cold. When they start to get
>cold from living inside the tank with low voltage they
>crawl onto the variac knob and heave-ho together and
>give it a turn to increase the heat to their living
>quarters on top of the poles. This gives the customers
>a little more voltage.
>
>If there isn't enough voltage to go around they remove
>some spare "voltage" from the oil they have in storage
>for the winter and put it in with the current voltage
>to make up the difference.
>
>This is all simple science and done by these actual
>microscopic people. They have no magical powers like
>Wizzards do.
>
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