PV installation - data from the inverter vs data from the meter

On February 1, I launched the PV installations. I noticed that the data from the inverter differs from the data from the bidirectional meter. Should it be so or is something wrong?

I have not yet received a fv from PGE (only in 6 months), so I do not know if such indications are ok. If there are any irregularities, I would rather catch them at this stage.

Data:
inverter: 62 kWh produced
2.8.0 meter: 31.8 kWh exported
1.8.0 meter: 196.3 kWh

You must remember that what the house will use will not be on the 2.8.0 meter.

The counter is bidirectional. Household consumption shows 1.8.0
However, I am concerned about the difference between the indication of the inverter and the meter in terms of kWh production. Are these indications okay or is something wrong?

After all, what the inverter produces, you also download on the fly without being connected to the network.
that is, your consumption is
196 from the meter + (62 - 31) = 196 + 31 = 227kWh
Everything is correct for me.

It is very good, you have your own consumption at 50%, and the higher the better.
If you disconnected all receivers, the inverter display = 1.8.0 display.
You also have an arrow P and at the moment "+" indicates that the production is less than consumption and you additionally download from the network, as it will be "-" then it is sending.
Out of curiosity, do you have a 1-phase meter?

Counter:
http://www.apator.com/pl/oferta/pomiar-energi...nergii-elektrycznej/liczniki-smart/smartemu-1

0.0.0 No. Counter identification
1.8.0 E: Checked-Initiated. Energy. Sum
1.8.1 E: Acceptable.Energy. 1-zone
2 E: Acceptable-Active. 2-Zone Energy
1.8.3 E: Incoming-Active.Energy. 3-Zone
1.6.0 E: Checked-In. Pmax. 24 hours a day
2.8.0 Exported active energy A-, sum

gawel111 wrote:

On February 1, I launched the PV installations. I noticed that the data from the inverter differs from the data

You don't have any meter showing your home's consumption.
You have a production meter on the inverter.
You have a meter that counts the excess energy produced over used.
You have a meter that measures the surplus of energy used over energy produced.
You don't have any meter showing your home's consumption.

Jan, you generate unnecessary costs unnecessarily - what for?
As long as you have everything measured from A to Z, it doesn't mean that everyone has to have it!

I have 2 1-phase inverters on one phase and a ZE energy meter on 3F, home switched to 1F. I know everything that happens and when.
You've got something upset Jan and you push everyone unnecessarily into LK and its consequences PVM.

Gaweł does not understand what his meter is measuring, so I explain to him.
Own consumption can also be calculated like this:
inverter production + 1.8 - 2.8.

I push people to measure them, because for me the awareness of consumption has translated into a decrease in the annual electricity consumption by> 2.5MWh.

Jan, but this metering costs ca. > 1000 PLN and for that you can buy almost the same amount of energy.

LK 200 PLN. Orno three-phase PLN 100-110 on Allegro from the pawnshop or 170 new - I see a lot more expensive. Orno single-phase 75 PLN.
There are 350 single-phase or 540 three-phase metering for production and consumption.

Thanks to everyone for the answers. I will be waiting for the first fv, I have a lot of concerns yet ...

And I have three inverters and individual meters attached to them.
I noticed that on two inverters 1 and 2 (the same model) there is 9kW less than on the connected meters (individual meters counted more), with about 400kW of production.
On the other hand, the opposite is true for the third inverter. The meter shows 5kW less than the inverter's meter for 500kW production.
The difference is that the mains voltage on these two is about 3 V lower than on the third.
Is the difference in measurements caused by a difference in voltage?

gawel111 wrote:

Thanks to everyone for the answers. I will be waiting for the first fv, I have a lot of concerns yet ...

Hi, how did the story with this invoice end?
I am also waiting for the first fv with PGE, but my production is in full swing and the consumption is low, because I am finishing the renovation of the house, which I will move into in 2-3 months. Yesterday, the inverter showed 855kWh of production, and the values on the Smart Emu 3 are 772kWh (2.8.0), 45kWh (1.8.0).
From the content of the posts posted here, I understand that I used 45kWh outside the PV operation period (or the period of less production than consumption) and consumed PV energy in an unknown amount on an ongoing basis?

There may also be a scenario where you have a 3-phase inverter and no balancing and the consumption on 1 phase exceeds 1/3 of the power generated by the inverter

3301 wrote:

There may also be a scenario where you have a 3-phase inverter and no balancing and the consumption on 1 phase exceeds 1/3 of the power generated by the inverter

And how can I check / determine whether I have balancing? Does it depend on the operator / installer / contract?

There are many examples in the topic of interphase balancing - we have to start fighting for ours !!!

But for example: connect to only one of the phases a load greater than 1/3 and less than the total power generated by the inverter at the same time and e.g. after 0.5h check 1.8.0, how the balancing does not increase.

3301 wrote:

But for example: connect to only one of the phases a load greater than 1/3 and less than the total power generated by the inverter at the same time and e.g. after 0.5h check 1.8.0, how the balancing does not increase.

I have a PV installation of 7kWp, I will wait for a cloudless day, where it generates about 6kWh in the afternoon hours and I will connect a 4kW load to one phase (two heaters). We'll see what comes out of it. Thanks for the hint

Hello
For me, there are also large discrepancies between the inverter and the ZE meter. I did the test, spent 3 days and turned off the PV system to see what the electricity consumption is per day, in normal use. And what I saw was shock. According to the PGE meter, it comes out that I use 19-22kwh per day, where before replacing the meter with a bidirectional one it was 9-12 kWh. I would like to point out that no equipment came in, I measured all devices with a wattmeter for the whole week and it turns out that these 9-12 kWh are ok. I reported the matter to PGE and now I'm waiting for the cheating trash to come. I know the result of checking the meter in advance before it is tested, of course, everything will be ok, but I hope that they will install a new item and leave it.

Mietek_MK wrote:

Hello
For me, there are also large discrepancies between the inverter and the ZE meter.

Comparing the indications of the inverter and the meter without the data of energy consumption at home will not do anything and the discrepancies can be large, unless the loads at home are turned off, this is an indicator. inverter and counter 2.8.0 will be similar.
And the fact that the consumption according to the PGE meter comes out of 19-22kwh per day and / g you should be 9-12 kWh, it may be the fault of this two-way but without connecting any additional abacus for the entire consumption which would confirm your assumptions, it's just a guess

Everything is one big assumption, the only question is, if after changing the meter I add that the consumption of electronic to a bidirectional one increases according to its indications by nearly 95%, then in this case why install PV as it turns out that I will pay for electricity anyway only 5% less. I have no guarantee that the previous meter counted well, but I know for sure that if I turned on all electrical equipment for 24 hours without a break, the consumption would be 45kwh a day, it results from the power of the devices, and in fact, never all devices never they work at once and around the clock. I know that the indications of the inverter have an error, but not that big, and hence the suspicion that something is wrong. My colleague, who founded the topic, also proposes to compare the energy consumption without PV after changing the meter to two-way with the energy consumption before the change of the meter, especially since it is PGE distribution.
As for the additional abacus, I see it only for my own, because no OSD will treat such a counter as reliable.

zaggio wrote:

3301 wrote:

But for example: connect to only one of the phases a load greater than 1/3 and less than the total power generated by the inverter at the same time and e.g. after 0.5h check 1.8.0, how the balancing does not increase.

I have a PV installation of 7kWp, I will wait for a cloudless day, where it generates about 6kWh in the afternoon hours and I will connect a 4kW load to one phase (two heaters). We'll see what comes out of it. Thanks for the hint

The test was performed after 1h, when the PV production was approx. 3kWh and the connection of the 2kW fuse to 1.8.0 was unchanged, and the production showed an increase of approx. 1kWh, so there is balancing.

I have already checked with PGE. The meter has not been replaced. You came with your laptop, and he took out a strange meter and he said that it was ok. I asked on what basis he found it. I "measured" and my accusations about the meter became unfounded. I asked him to check what the real power of the energy returned by the inverter looks like with the current consumption turned off, i.e. only the inverter was working. It turned out that the power of the inverter on the display is the same as on the PGE guest metering device and the meter. I have at least proof that the inverter does not distort and the value it generates is real.
The most important thing about this visit of this Lord is that he did not want any signature and password now, if necessary, call the manager and he gave me the number, but everything is fine. Frustrated, I wrote down the counter yesterday at 3 p.m. when he went, and today I look and do not believe my eyes. The daily consumption was 4.7 kWh + 3.6 kWh covered with the current production in total 8.3 kWh. 3.6 kWh is the difference between the reading from the inverter and the reading of the energy fed into the grid according to the PGE meter.
There is only one conclusion PGE in Smart meters can do anything they like.

Hello.
Gentlemen, please help me decode the Smart EMU3 meter readings.
The point is, it doesn't say 1.8.0 and 2.8.0. PV installation commissioned and the meter set up by PGE at the end of August.
Photo of my meter.

My indications are slightly different.
(After 0.2.2 Tariff, there are such):
1.8.1 ------------- 0000052.2
1.8.1.1 ---------- 0000022.7
1.8.2 ------------- 0000081.5
1.8.2.1 ----------- 0000023.0
2.8.1 ------------- 0000135.2
2.8.1.1 ----------- 0000057.7
2.8.2 ------------- 0000085.3
2.8.2.1 ----------- 0000044.4
5.8.1 ------------- 0000000.8
5.8.1.1 ----------- 0000000.7
5.8.2 ------------- 0000000.5
5.8.2.1 ----------- 0000000.0
6.8.1 ------------- 0000000.4
6.8.1.1 ----------- 0000000.3
6.8.2.1 ----------- 0000000.1
7.8.1 ------------- 0000051.9
7.8.1.1 ----------- 00000.18.2
7.8.2 ------------- 00000.33.6
7.8.2.1 ----------- 0000015.1
8.8.1 ------------- 0000026.7
8.8.1.1 ----------- 0000008.8
8.8.2 ------------- 0000059.1
8.8.2.1 ----------- 0000019.7
C.12.5 -------------------- -91
1.6.0 ------------------ 003.40
2.6.0 ------------------ 002.36
The inverter produced 330 kWh at that time.

How many days after replacing the meter is this reading?

Jur-ex wrote:

The point is, it doesn't say 1.8.0 and 2.8.0.

from what I can see you have two tariffs.

downloaded
1.8.1 is the current month in zone one, 1.8.1.1 the previous month (August)

1.8.2 is the current month in the second zone, 1.8.2.1 the previous month (probably show up to 6 months back, the last one is deleted)


production
2.8.1 the current month in the first zone, 2.8.1.1 the previous month
2.8.2 the current month in the second zone, 2.8.2.1 the previous month

Jur-ex wrote:

The inverter produced 330 kWh at that time.

production data 2.8xxx shows that you sent 322.6 kWh for the meter, a poor, even zero self-consumption.

Added after 7 [minutes]:

Wlodek22 wrote:

How many days after replacing the meter is this reading?

after as many as you declare in the contract ... 2,6,12 months. I had the reading after 13 months.

I meant the days of the exchange. Judging by the data, about 20 days. I, on the other hand, drew attention to the reactive capacitive, 114kVarh in total, i.e. about 5-6kVarh per day. Just like it was with me

Wlodek22 wrote:

I, on the other hand, drew attention to the reactive capacitive, 114kVarh in total, i.e. about 5-6kVarh per day. Just like it was with me

apparently the inverters send it when they are not working and someone wrote somewhere that he made a driver for disconnecting the inverter from the network (simulating the loss of the network). Let's say at 5am the contactor was turned on and the inverter would normally pick up, after sunset / finished production the contactor off. I did the approaches at home and wrote down the kVarha in the evening, but in the morning I always forget to write down and compare again.

You can read https://www.elektroda.pl/rtvforum/topic3241406-600.html

Wlodek22 wrote:

How many days after replacing the meter is this reading?

Installation on August 24-15, 2019, i.e. 24 days.

cuuube wrote:

production data 2.8xxx shows that you sent 322.6 kWh for the meter, a poor, even zero self-consumption.

Thanks to you guys for these comments, it explained a lot to me about reading this meter. I don't know yet what about the reactive energy Q1, Q2, Q3, Q4.
I am also puzzled by the almost zero direct consumption of production. Could the reason be wrong setting of the inverter. I did the installation myself, the new CPS ChintPower inverter, I made an error when starting it and I coded Australia as a country. This can be changed, but it asks for a service password (I did not enter any password). I asked the seller for a password, but I don't think he can get it either.

Wlodek22 wrote:

I meant the days of the exchange. Judging by the data, about 20 days. I, on the other hand, drew attention to the reactive capacitive, 114kVarh in total, i.e. about 5-6kVarh per day. Just like it was with me

Before starting PV, I used about 7-8 kWh per day in the summer.

The setting of the inverter is unlikely to be the reason why you have this 1 or 3 phase inverter and what model