Lowering Voltage at Home from 254V to 230V for Energy Efficiency with 10kW Load Capacity

Hello, I have such a problem, so I am asking for advice on how I can lower the voltage at home to 230 VU. My energy supplier provides me with a voltage of 254 V and thus I lose it because the simple formula shows that every device that I connect to the network will draw more energy and thus I will pay more bills, I would ask for advice on how to make a device that would lower the voltage from 254 V to 220-230 V and that a load of about 10 kW could be passed through it. I do not know if something like this is possible at all, I did not find a way to do it, but maybe someone of you has such experience and will help me - I look forward to advice

Devices with motors (refrigerators) do not draw any more energy. Ovens, boilers, electric kettles and devices controlled by thermostats don't get any more energy either. Energy-saving bulbs also do not. Neither are any electronic devices.
Only incandescent bulbs (ordinary, halogen) draw more energy and, what is worse, their durability decreases significantly.
It makes sense to lower the voltage properly only when we have expensive electronics at home that do not always withstand such values.
This can be done using a transformer (with a power of several percent of the required power), but any modifications create additional complications (e.g. protection operation time increases in the event of short-circuits). It is better to use factory voltage stabilizers, 30 years ago they were popularly used, especially in the countryside.

Buddy, Czech, you're not (to put it mildly) the truth.
Each device to which a higher voltage is applied flows more current and it draws more Kwh from the network.
Buddy djhavay advertise the situation in ZE.

Kol.kavma, czechia is not so far from the truth because devices with a thermostat at higher power cause faster heating, so they will turn off faster, which means that the power consumption will remain more or less at the same level. It is different with the durability of the device and the temporary power consumption. Greetings.

The refrigerator motor will not increase the speed and it will not shorten the cooling cycle, and the current will be greater.
As for heating devices such as kettles etc., the water will actually boil faster.
greetings

Yhy starts again with "what is the meter measuring" It will measure more only for ordinary light bulbs and possibly for a refrigerator ... wherever there are converters (computer, energy saving light bulbs, TV sets, videos and other miracles), it does not consume any more, there is no such possibility - even the electricity will drop and will not increase compared to 230V; p (just don't scream, because the current is dropping but the power is unchanged )

You will not reduce the voltage with a home-made method, unless you have refined transformers or you can find a thousand on the street and buy it There is a complaint with ZE

The matter depends on whether the voltage is constantly higher or whether it fluctuates. If it is permanently too high, it is easier and it is enough to use an autotransformer. It is so much better than a transformer, that the transformer would have to be 10 kW and the autotransformer is enough, I think, 1 kW. However, you need to know what is the permissible current for the winding wire at least in the section that works in series with the network.
To the col. Krzyś33.
You wrote imprecise: power will change, only the energy for which you pay will not change.

Advertise power quality with the supplier. Correct me if I'm wrong but I guess you should have 230V + 5% -10% which is max 242V. The supplier himself should regulate the voltage without any problems by reattaching the taps on the transformer. Unless you are the first recipient in the WAN, and in the latter the voltage drops to 230V-10%.
As for energy consumption: the only major problem is that the bulbs wear out quickly. The remaining devices are not very sensitive to voltage increase. All heaters will consume more power, but thermostats will turn them off faster. Motors will have more iron losses but less copper losses, so it's one thing. All electronics - it depends on how it is built. If it has a power supply with an inverter (currently most of them), it will not feel the voltage change at all. If a transformer with a parametric stabilizer, it will take you 10% more power.
Do not play with any transformers, because it makes no sense. The transformer itself is not a lossless device. Expect at least 10% losses on it. So you will lose more on the transformer than you will gain from lowering the voltage ...

Narek 1 wrote:

The matter depends on whether the voltage is constantly higher or whether it fluctuates. If it is permanently too high, it is easier and it is enough to use an autotransformer. It is so much better than a transformer, that the transformer would have to be 10 kW and the autotransformer is enough, I think, 1 kW. However, you need to know what is the permissible current for the winding wire at least in the section that works in series with the network.
To the col. Krzyś33.
You wrote imprecise: power will change, only the energy for which you pay will not change.

You can use the 200W autotrafo for the refrigerator itself, why not the whole house ... unless your friend usually has light bulbs, we have a problem. But I think it makes no sense because the 252V voltage is above the norm, the complaint in the EV will be installed by the recorder for some time and it will come out ...

We do not know what meter the colleague measured, but according to the standard, i.e. 230V ? 10%, it is also within these limits: 207V-253V http://www.sep.com.pl/opracowania/opracowania_zmiana_napiecia_2002.htm

Complaints were reported to ZE, they measured with their meters and stated that it was 252 V and found it to be within the norm because the contract says that they have 10% tolerance, i.e. it can be even 253 V. I still had to pay PLN 100 for an unfounded call-mockery !
And as for the devices, an ordinary halogen rated at 500 W with my voltage actually consumes 575 W (I measured with a professional meter) I do not know how it is translated into refrigerators or RTV equipment, but I know for sure, because I checked it myself that light bulbs, heating devices and the motors consume more energy, and my reason is that if a higher voltage is applied to the transformer on the primary and higher voltage on the secondary, it is not very healthy for RTV devices, not to mention higher power consumption. Such translations as EC employees such as "the water will heat up faster for you, or the bulb will shine brighter or the engine will spin faster" do not satisfy me

As for the measurement by the plant of 252V (if the voltmeter had a measurement uncertainty of 0.5%, the standard could be exceeded), if there is such a voltage constantly, try to measure the voltage at night, it is possible that then it will go beyond the standard.

By the way, it is very strange that the ZE has problems with too much voltage (unless the voltage is too low for most consumers)

djhavay wrote:

Complaints were reported to ZE, they measured with their meters and stated that it was 252 V and found it to be within the norm because the contract says that they have 10% tolerance, i.e. it can be even 253 V. I still had to pay PLN 100 for an unfounded call-mockery !
And as for the devices, an ordinary halogen rated at 500 W with my voltage actually consumes 575 W (I measured with a professional meter) I do not know how it is translated into refrigerators or RTV equipment, but I know for sure, because I checked it myself that light bulbs, heating devices and the motors consume more energy, and my reason is that if a higher voltage is applied to the transformer on the primary and higher voltage on the secondary, it is not very healthy for RTV devices, not to mention higher power consumption. Such translations as EC employees such as "the water will heat up faster for you, or the bulb will shine brighter or the engine will spin faster" do not satisfy me

99% of rtv devices have converters, not a normal transformer, and a converter will not make a difference. It's hard to win with the juggernaut, but what is this measurement in the middle of the day by a second? And at night it will probably be 1V above the norm, only these gentlemen sleep well at night, and the recorder does not want to install because they are afraid that you are right; p

Demand a recorder because these bulbs shoot at night, they are like shit to install this recorder, we pay them a lot of money.

Have they issued any measurement receipts? the invoice for the 100 PLN? Probably not because why ... advertise the measurement and ask for a 100 PLN return, the measurement they made is not a measurement ...

Did you really call the energy emergency for this Saturday night to Sunday ???
You couldn't wait until Monday and calmly explain in the area what they can and cannot do about your problem?
You could easily get out of paying a cent with a simple question about the accuracy class of "their" meters. Unlikely to have 0.5 or better. And if they had worse, then their measurement did not guarantee that + 10% was not exceeded ...

To my friend djhavay and my colleagues persuaded you to spend a hundred bucks.

Djhavay's colleague to which ZE is connected? And what was the name of the service for PLN 100 (because I do not see such in the price lists). The only one that suits me is:
"Disassembly and assembly of the control and measurement device installed to verify compliance with the technical parameters of energy supplied from the network - PLN 94.00"

But it's not about a multimeter, so my friend was deceived. Another thing is that the colleague did not see the voltage inconsistent with the standard (although the measurement made by the ZE justifies the installation of a more accurate measuring device, for longer than 10 seconds - here JurekN will probably agree?)

Quote:

Did you really call the energy emergency for this Saturday night to Sunday ???
You couldn't wait until Monday and calmly explain in the area what they can and cannot do about your problem?
You could easily get out of paying a cent with a simple question about the accuracy class of "their" meters. Unlikely to have 0.5 or better. And if they had worse, then their measurement did not guarantee that + 10% was not exceeded ...

I did not call the ambulance from Saturday to Sunday, only then I wrote such a topic on the forum, the ambulance came during the week, probably on Wednesday.
As for the payment, they said that the invoice will be attached to the next bill, so I do not know what the basis for this fee will be, but exactly, when it comes to accuracy, it should be PLN 94, they also told me that I should be glad that I have more tension because most people complain that is too small, and is it my fault that I live as the first recipient of the n / n transformer?
That's the only reason why I have to pay 10% more for electricity on average?
Is the overvoltage e.g. at night, more than the required 10% (even by 1 V) gives me some basis to be able to claim my rights?
It seems to me that I will not win with the bet, I am connected to ZE ENION from Krakow

WojcikW wrote:

And seriously, this topic is laughable.

I support
People will not please it, but in this case it turned out to be bad

Quote:

I support
People will not please it, but in this case it turned out to be bad

to colleague alfaam: I wish you such tension and I would be curious if you would be satisfied after receiving the energy bill
It is good to criticize someone when everything is okay by yourself

Everyone is convinced that I do not know why that I will not win with EV - why? Do you think you are safe in your home when you have a voltage of 254 V?

What do you do when you start to fumble with the TV with this tension? Are you calling the fire department?
:)

I am fighting with ZE for voltage in the network. Only what is certain - nothing on the phone, a letter only to the region will be refused.

To begin with, write a letter in 3 copies - the first to ZE your area and take it personally to the sector and ask for confirmation of submission (for a copy), send the next two to the ZE headquarters and the Energy Regulatory Office. Describe in detail the mockery of the men who were on the measurements, describe everything you can.
The case is rather simple - they should lower you down to, say, 240V.

You can record all visits of men from ZE in your home. Since they are not serious about their work, they should not work on electricity.

Manage these 100 zlotys in the donation letters because the measurements were not made with the correct instruments. Measurement in the socket and the statement that it is 252 V and it is ok indicates the lack of qualifications of employees. Ask in the letter what was the load on the network during this measurement because it is sure that it is lower on this phase as the voltage increases, or higher on another phase.

since these are my delusions, please explain to me why the voltage was increased from 220 to 230V and please do not explain yourself with EU directives, or maybe you will say that it is for our good? not ! This was done to increase the efficiency of the power plant, because I do not want to put new ones, so you have to increase the tension so that the old ones get better ... moreover, I will not talk about it here because I see that this forum is going in the wrong direction, I was counting on technical advice and not morals, because there are many experts for that, not only on this forum. Thank you to everyone who took the subject seriously, I will use some advice, Regards

Please correct the text! /p.15/
[Akrzy]

Hello

I think it's a power plant business for you to have 230V. It's like buying
vodka that is 30% instead of 40%. They give the wrong product and have them turn it over to
good. However, if you want to adapt, I have to sell
very cheap PLN 600 autotrafo with a power of 18kW with a switch at the output
180-190-200-210-220-230-240. Trafo is three-phase

Leszek

djhavay wrote:

That's the only reason why I have to pay 10% more for electricity on average?

But understand man, you won't be paying that much more ...
The main row bulb will take 16% more power, but will give 40% more visible light ...
you can safely turn 75W instead of 100W and you'll be "ahead" on electricity. It's just that, unfortunately, you will change bulbs 3 times more often than those with a perfectly rated voltage. And that's the only real problem you have ...
If you have 12V halogen bulbs, it is enough to add a piece of winding to the transformer and connect them in series with the primary winding.
The engines will practically take no more power from you. I don't know on what basis do you assume otherwise ... did you measure (what?)? have you been rehearsing did you have a dyno with load measurement and a high power autotransformer at your disposal?
The power consumed by the engine depends primarily on the load it is loaded with the driven machine. And it does not change due to a change in the supply voltage.
Any electronics powered by a voltage converter (i.e. the vast majority of modern electronic devices) will take you about the same power, regardless of the supply voltage ... e.g. computer monitors can be powered with the voltage from 100V to 240 + 10% V and it does not affect rated power.
All electronically stabilized discharge lamps will behave in the same way, including the so-called "energy saving light bulbs".
10% more power will be used by electronic devices, in which there is no voltage converter, only a network transformer and a stabilizer. So old radios, 30-year-old televisions, chargers for batteries, cells, etc., small power supplies "replacing" batteries in Walkmans, etc. devices with negligible power.
Heaters, electric kettles, irons, etc. will actually consume up to 21% more power, but for it in a shorter time, so you will pay the same for energy.

There is 230 V throughout the EU, and it has been raised in our country.
Besides, also because not to produce 2 versions of the devices - 220 for Poland and 230V for the rest, only 1 version is made (i.e. for Poland the equipment is made in a different version, i.e. lower quality, but cheaper).

I don't know why you think that increasing the voltage is supposed to increase the efficiency of the power plant ... It doesn't have a complete effect on that. This is the final voltage, and the generators do the same!
If this were the case, all over the world "power plants would be increased in voltage" indefinitely in order to get as much energy out of power plants as possible.

252V is normal. So there is no basis for a complaint. Unless there is more.
In addition, the bulb will have a few watts more power - but it will also give more light!
Electronics - nothing will change. Most converters have a tolerance of 90-270V.
Fridge ... There is no point in arguing about the PLN 1-2 more on the bill per month.
Unless it's a 50-year-old Minsk, it may increase to 5 zlotys.
12 V halogen lamps will not burn out faster - they are on the secondary. Especially when we have electronic transformers, the voltage will remain unchanged there.
And on the toroids there is never 12 V at the output - it's 11-11.5 V, so it will probably go up to 12 V.
Halogens on 230V ... They burn out 5 times faster than the low-voltage ones.
Radiator, heater, kettle, oven - they will turn off faster.

greetings

djhavay wrote:

Quote:

I support
People will not please it, but in this case it turned out to be bad

to colleague alfaam: I wish you such tension and I would be curious if you would be satisfied after receiving the energy bill
It is good to criticize someone when everything is okay by yourself

you are right i'm oki, later posts confirmed my way of thinking.
I suggest that you fight for this hundred (in my opinion, they did not have the right to charge you) because as for the voltage value, everything is fine.

Regards, sorry for the earlier post, I could express myself differently.

Subject exhausted and going in the wrong direction ...
I close.