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multigrid

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Everything posted by multigrid

  1. Yes they did...Root cause was what I told them at the beginning. The system was set to "discharge at night only" obviously a wrong default setting.... They changed the setting - done.
  2. Final Update: Today, after several weeks, Goodwe fixed the problem. My system is working now.
  3. Just an update... Neither Goodwe nor LG support (who was on site) made it work so far. Looks like the Goodwe EM simply doesn't work with the LG 6.5 RESU and I'll return the Goodwe EM.
  4. Yes I am very sure I am in Germany. The mentioned feature is NOT for Germany according to GW support, thus over here it is NOT being accessible by the end user or installer. Only GW support is supposed to access and change it. I am no longer on the latest Version 3101011, as the latest doesn't manage the feedback limit very well, there is always a draw from grid, where I prefer a slight feedback to avoid buying energy. Support installed Version 3090911 which works very well with this regard
  5. @FixAMess txs for your hints You are right "IF the load can be provided by PV.." But in my case PV is NOT always sufficient to power loads, the missing power (e.g. 2.1 kW) is drawn from grid, rather than from battery, @ SoC 100%. Last night it was very obvious, from sunset to sunrise battery provided power. There is a flag "charge during nightime only" which would force the behavior I am experiencing, but the flag is not set, accd. to GW support. Support tried to change the flag for testing purpose, but system doesn't accept to change this at all. Seems to depend on hardware version. Now GW development will look into it, within a week... DoD is set to 90% Country setting is Germany, where the system is installed Battery is NOT set as self defined, I have been instructed to use LG RESU 6.5 settings - as is. The APP's error messages shall be ignored...latest version seems to be buggy. Meter test with App doesn't work either. Is there any chance to control the 5048EM, i.e. writing to registers (like Victron)? I'll report back on progress
  6. Update: Root cause identified, Goodwe development is taking care - fingers crossed
  7. Update: during the night, power was delivered by battery, as expected. Data logging shows, as soon as PV was off, battery started to deliver, in the morning PV came back, battery quit delivering power. I understood this is a feature required by other countries, but it is not activated in my system. (support said)
  8. I am stuck with my new GW 5048 EM (Firmware 3101011), operating in "General Mode". The Inverter is connected to 3p grid meter, 2 PV strings and an LG RESU 6.5 battery. System behaves correct in principle. I.e. it does reduce or increase PV power when loads increase/decrease, It did also charge the LG battery to 100% SoC. However, it does not take any power from the battery. I spent a while with the Goodwe Support on the phone, where at the end I have been asked to talk to LG, as the problem seems to be with the battery. I contacted LG, waiting for feedback, but honestly I don't believe the LG is my problem. BMS communicates with the 5048 EM, SoC,SoH, Amps, Voltage etc. are available to the Goodwe. The App screen shows several diagnose messages which I cant solve (no clue how to..) 1. SOC Delta OverRange: Please check the battery capacity setting and charge voltage setting I cannot change any setting here, If I choose LG Chem RESU 6.5, values are preset - 126Ah / Chargin 57.7V / Charge current 50A / Discharge Current 50 A 2. Self Use Off Self use mode was shut down, check weather charge and discharge time is set As far as I see, 0:00 to 0:00 is set as the default in general mode...and cannot be changed Just a couple minutes ago I got 3. Battery does not charge Battery Overcharge, contact Battery Manufacturer State code of machine 4194304 Any help aprecciated Txs -------- For testing purposes I switched off PV DC and Grid. Loads which are connected to the backup output are powered by Inverter then, using battery, w/o any interruption.
  9. @plonkster unfortunately I have no clue about coding. So far I always copied and modified existing code - that's the utmost I can do unfortunately. So it looks like I have to be patient and do the "pwr up" for my Nissan Leaf the manual way until there is another solution available.
  10. Hi, I am new to the forum here, just wanted to do a quick intro. Couple of years I started to use a few PV panels to support basic energy consumption. There was (almost) no feed to grid, major enegry was self consumed. Although it was not big savings, it was so much fun to see the bill decreasing and, more important, to somehow contribute to shutdown of coal an nuclear power plants. The latter becomes of increasing importance to us as we are also running a Nissan Leaf EV. So recently we decided to enter the next stage :o) and go for an ESS, hoping to significantly reduce power to be bought from the grid. We started small first and try to learn Setup is: Multigrid 3000/48 Venus GX LG Chem RESU 6.5 and a total of 5.7kWp installed, split into three strings 3.4kWp (to come next month), 1.8kWp, 0.5kWp, each with own PV inverter connected to AC in and AC out (to obey the 1:1 rule) I'll never see the full power of 5.3kWp as there is always shade somewhere, however I tried to pick the best 3 spots. In previous years the annual yield was between 0.86kWh and 0.95kWh per installed Wp My goal actually is to run the house as much as possible from the grid and feed excessive PV, if there is any, into the electrical car's battery. However this is not solved yet. I still need to figure out how I can trigger a relais based on conditions, e.g. "If current loads are supplied by PV AND battery SOC is 98% for x minutes then switch on a relay". If somebody of you experts has an idea how to do this with a Victron Multigrid I would aprecciate it. Another "to-do" on my list is to set up data-logging on Linux and Mysql locally. VRM portal is great, but I also want to keep my data locally. Have a couple of Synology NAS running, so this is where I want to go. Looking forward to make our system doing what we want, and apologies for all the questions I might have... Karl
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