Voltage Graph of Grid Voltage Reduction in Ontario

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!

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!

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.

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

"_jj_" wrote in message

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 ...

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

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" wrote in message

"_jj_" wrote in message
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 ....
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

"_jj_" wrote in message : : : >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"?

"Solar Flare" wrote in message

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" wrote in message
"_jj_" wrote in message
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 ...
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

"Mr Wizzard" wrote in message

"Solar Flare" wrote in message 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?

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.

"SQLit" wrote in message

"Mr Wizzard" wrote in message
"Solar Flare" wrote in message 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?
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 ?

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" wrote in message

"Solar Flare" wrote in message 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" wrote in message
"_jj_" wrote in message

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 ...
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

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.