Hello community,
I use the ENTSO-E Binding with (Gesamtpreis in graph)
area=“10Y1001A1001A82H”,
resolution=“PT15M”,
and get he grid prices in EVCC for DE-LU (EVCC Preis in graph).
Both timeseries are show in this graph:
Why are from roughly 14:00 to midnight those prices identical and after midnight for the next day different. Can I change some settings, that those prices are identical?
Greetings, Thomas
how are we supposed to answer that with that little information you give upfront?
We don’t know how you have setup your system, and we don’t know how evcc works w.r.t. fetching the prices. You don’t even explain where these originate from.
If you use the evcc binding to fetch some price channel (I’m just guessing you do), then it’s not a time series. You cannot get future values that way. The item that’s persisted is only okay for the past. Possibly not even that as then they should be equal, maybe there’s an offset of a day?
Are you sure you are displaying the inmem persisted item values in your chart and not the rrd4j ones (or whatever your default db is)?
My question was to get some insight in wich way, how often and what kind of prices the entsoe binding uses. How evcc handles it, is not a topic for this forum, I will ask it in their forum.
That’s why I did not come up with more info, because I thought it not relevant.
ok, here are some additional informations:
But that was not at all what you asked for.
So you have a complex way of processing evcc price data which is basically still unknown and not shown to us (those people you asked why it differs from what EntsoE gives you).
The answer to that is simple (and probably useless to you at the same time yes I know): there’s errors somewhere in your design and/or processing chain.
Try persisting the entsoe item with inmem persistence and chart that against your mqtt-evcc item right from OH builtin Apache ECharts.
Hint: use ‘service: inmemory’ in chart definition to define which db to query for persistence data for that item.
NOT from Influx, Grafana or whatever.
If they don’t match, your evcc data or your processing is bad. Like I already answered, maybe a date offset mistake by a day in your code.
It’s not important how often and when the entsoE binding fetches new data.
If the “native” entso e binding’s item chart line differs from what you have charted from your influxdb data then Influx is likely the wrong tool for that purpose.
I still don’t buy it. There are many hours, in which the values match perfectly. In my opinion that nullifies your arguments.
I still believe, there are differences in getting and handling the values between entsoe and evcc.
To understand where it could come from, some insight into the price collection from entsoe would help.
I don’t understand why you question the persistence, it is equal for both time series.
The opposite is true. EntsoE prices are correct.
That there are times where they don’t match your values from evcc nullifies your argumentation in fact.
If during some hours your processing of values from evcc source comes to different values, then you made mistakes in that computation/processing. Even more probable since as I understand it, it’s not arbitrary mismatches but block-like. That very much sounds like a design or coding error.
If you believe that understanding what the binding does helps you with finding those errors then feel free to read the code, it’s online here. (For the record: I don’t know myself).
Wow, your tone is so nice, as many times in the past, as I red posts of yours 
(I hope you read the sarcasm I put in there for you).
Yes, I did not provide source code for getting the evcc time series. And therefore that must be the source of error? How thin…
As last try, here are some additional information I collected about to day.
The white thin bar represents -now-
Graph from today, 7:53:
The graph, after Update of entsoe and evcc:
Maybe, someone else sees what I see: Now the entsoe graph (orange) matches the evcc graph (grey) for the rest of today. I see no change in the evcc prices for the rest of today, but in the entsoe prices.
Where do they come from?
I suggested how to proceed to evaluate that, didn’t I.
You can compare your EntsoE values with official charts from whatever source (like EPEX) to find out whether they’re correct.
Ah, okay. It cannot be your mistake of course so I must be wrong… so as rethinking that vague possibility could result in some unpleasant realization let’s better blame that hotline guy for his tone you have been disliking anyway… he also must have missed that you’re paying the premium service fee for volunteer’s advice in this forum. (I hope you read the sarcasm I put in there for you).
Good luck in finding someone else to help you with your problem so you can keep up your attitude.
How distinguished, to think no-one else could help.
Have a nice day!
