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Cef

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Posts posted by Cef

  1. On 2024/01/05 at 6:30 PM, Riad said:

    Hi

    Require an installer experienced in setting up Goodwe GW5000 ES20 to troubleshoot (already installed). Will remunerate. Only reach out if you have installed the above model - based in Cape Town.

    Thanks

     

     

    Hi @Riad

    Could you publish your first impressions of this new Goodwe inverter?
    From what I have read of the specifications, this new Version (G2) of Goodwe ES Series Hybrid Inverters seems great !

     

  2.  


    Straight away, without any eclipse of the sun, hadedas congregating on the panels, clouds, etc, the PV production dropped to just enough to track the load. Grid voltage on restoration was about 185V.

     

    In the VAC Failure condition (Pv Master registers this error with the code: 131072) there is nothing that surprises me. In my location the energy is very stable and is within the voltage and frequency ranges of the country code. Unfortunately, I cannot reproduce both a FAC and a VAC condition to draw definitive conclusions.
    However, from a message from @paul99I was able to observe how in VAC condition, the information that the Goodwe provides in one of its sensors (the one for Non-ESSENTIAL loads) is wrong. Without a doubt that is a bug in the Goodwe firmware. The information shown by PV master is not divided into essential and non-essential loads.
    It is possible that in this condition of VAC Failure, and very possibly FAC Failure (Code: 536870912) the PV energy is =0. Hopefully Paul can tell us more about this.

  3.  

    Conclusion: If the following conditions are in place
    1) Inverter in eco mode
    2) The time of day is outside of a charge time as per eco mode
    3) No grid coming into inverter (for whatever reason)

    Then the inverter will not draw any PV. Possibly until a charge cycle/time slot is entered.

    So I am leaving my Goodwe inverter in general mode, unless I have to charge from grid.

    I had left it stuck in eco mode because you can change modes remotely, it's a security blanket, and because I was too lazy to change the mode every day.

     

     

     

    Hi @Bobster.

    I use Economy Mode and what you say is very strange. Although I hope I haven't misunderstood you.
    Since I export power to the grid, to prevent my batteries from eventually discharging to the grid, I never have a discharge period with economy mode during high solar production hours of the day.
    But since I discovered what I believe to be a bug in the ES 5048 firmware when a VAC failure condition exists, I tested its conclusions as it is important information that I could incorporate into my software development.
    I set the economy mode with a DISCHARGE period in the presence of a large amount of PV (around noon) and proceeded to cut the Grid.
    There was no change. The inverter automatically supplies from PV all the power needed for essential loads.

     

  4. Hi @RavRabbit

    1) Error 15, as you will have seen in its description, is recorded when what happened to you happens to you, this is "a trip". Goodwe's software (PV Master) does not record them.
    This is the information it records (event log):
    Error_Info="Warning!: Loss of BackUp loads"
    Error_desc="Device trip, otherwise check the connections downstream of the B.Up output"
    This error can also appear in the event that the Backup Output of the inverter does not detect any load (for example due to a short circuit downstream of your current inverter).
    The values you see, which don't seem to make sense, are due to the failure audit event saving the electrical parameters an instant before "tripping". Unfortunately, since Goodwe's motherboard circuit boards do not have any type of battery, the inverter loses all communication instantly when a trip occurs.

    2) With reference to the failure of your Goodwe, it may be possible that you have one of the 2 charge/discharge circuits burned. Each circuit handles a maximum of just under 50 amps. Verifying this is simple. With a good solar production and being connected to the Grid, you will be able to see when your batteries are charging, how much is the maximum daily charging amperage. If this value is greater than 50 amps, you probably don't have this problem. If the battery charge does not exceed 50 amps, it is almost certain that you have one of the circuits burned. You can see the maximum daily value of charge amperage in this sector of the main screen of my system (orange background and white letters).

    image.jpeg.930a5be1196dcd558abb9d2b2ef96c75.jpeg

  5. On 2023/07/15 at 6:44 PM, curto said:

    Hey @Cef Great to see you are still evolving this software for everyone who is using it. Just wanted to give you an updated on my project with the 3 x SBP 5000 inverters - which although not directly related (being AC coupled inveters only) relates in respect of using the same AA55 protocol that you are using for communicating with the inverters

    I use Node Red for my communication and control of the inverters and have been doing so for the last 2 years or so with no issues.

    I am not sure if your plan is to provide control as well as monitoring of the ES series but if so i am happy to provide you with all the info i have in terms of writing to the inverters (By IP Address in the case of multiple inverters) and being able to control what mode the units are in and the the different time settings.

    I have found this to be very reliable unless we have storm and we then often have failures of the GoodWe WIFI modules.

    I currently write in realtime to the inverters and tell them how much power to charge and discharge at any point in time (we are a 3 phase house and GoodWe do not support multiple inverters in a 3 phase scenario so have to manually control each inverter on the 3 phases)

    Let me know if you require any information in relation to this - it was all hard won by packet capturing everything that PVMaster was sending to the Inverters when changing modes and times of operations and then charge and discharge limits.

    I will be shortly biting the bullet and moving all of my control over to the modbus port (again through Node Red) but happy to share in the meantime if you want the information

     

    Craig

     

     

    Tank you very much for your ofreciment. The project continues with progress, although in recent times a little slower since I have been with a lot of work
    Sorry for the delay in responding, which is for the same reason.
    I would be very interested in your progress in writing commands with the aa55 protocol, although remember that the ES Series is not MOD BUS. It's just aa55 over UDP.
    If you could share the information you have with reference to:
    1) Command aa55 to configure Economic Mode and mode of passing the values of days and hours of charge, discharge and their nominal %
    2) Command aa55 to perform a soft reset of the inverter, after programming the Economic Mode and/or changing to any other operating mode, so that the configured values are effective.
    3) Command aa55 Allow/Disallow export to grid and set max value.

    I would be interested in this, because in version 4.20 that I will soon publish I implemented a Weather Widget extracting data of interest from Solar Systems specifically, such as the time of solar Noon and the % cloudiness and it would be interesting to make automated processes in such a way that the inverter changes its mode of work according to weather conditions.

     

    If you wimage.jpeg.72a0df6c594667001dea82df8efcd5b8.jpegant, you can send me your interesting research privately.

    Best regards !

     

     

  6. As far as I know, at this time Goodwe does not request this information to the BMS for compatible batteries. Ideally, it would be possible to have a separate app for each battery model.
    If monitoring 24 hours with the software of this thread, it would be interesting to consider a simple counter, in an future review, for example in case a charge cycle is considered if the SOC dropped below 70% on immediate discharge previous. The other inconvenience that could be solved in an approximate way, is that based on the State of Health of the Battery (SOH), each user could calculate the cycles already accumulated according to their brand and model, which would be taken as the initial value of the counter register. Thanks,  It's a good idea, it would be  very simple to implement.

  7. 2 hours ago, Archie1 said:

    Hi Cef,

    My Goodwe is 7+ years old - serial number 34048E……..

    As Bobster advised - Pylontech lithium batteries will work, SOC will be maintained by inverter.

     

    Yeah. Unfortunately, the Goodwe whose series begin with 3... would not, in principle, be compatible with the pylons through BMS.
    Self-definition is always an alternative, but for the price of these batteries, from my point of view it is a risk.
    If it were my case, I would try to evaluate the costs of the EzConverter as @P1000 suggested.
    Look at this post:

    https://powerforum.co.za/topic/9775-old-goodwe-comms-with-pylon-battery/

     

     

  8. Hi @Archie1

    I have the same inverter. At least the color is the same. If the serial starts with 95048ESU... I can assure you that the Pylontech US3000C batteries work perfectly. I have 4 connected. The only drawback is that you have to make a very simple CAN specific cable with RJ45 connectors on both sides. The cable from the Pylontech connection kit does not work well with the Goodwe, it gives errors of disconnection - BMS connection. The diagram was officially published by Goodwe for these batteries. I think it appears in a forum post, but if you can't find it, I'll look for it and post it.

    On the other hand I tell you that the latest Goodwe Firmware is 1 2525/17 This is FW Version 1 2525 and ARM 17.

    Regards

     

  9. @abrax With all due respect, I think some concepts are mixed.
    The screen you show in the post does not indicate any Goodwe error. The code "0" appears in PV Master (I show it in my software taken from the Inverter log) when an error condition disappears, that is, when what was an Alarm condition for the inverter firmware is no longer present.
    For example, the Alarm: Nº: 512 (Utility lost) when there is a power outage of the grid generates a condition that persists until the electrical service returns to your home, where the code "0" appears.
    You understand ??
    In the Error Log I identify different types of Goodwe's own Alarms, status changes of internal variables of a logical type, and situations that, due to changes in the operating parameters, I estimate may be of interest to Advanced Users, as well as certain actions of the user.
    The Goodwe alarms/events that you can check in PV master in this software appear in yellow letters with a red background.
    If you have what you think is a problem on your Goodwe, it would be nice if you would make a separate post of this thread, so that many Goodwe users who do not use this software can give you feedback and/or benefit from solving the problem you are having or do you think you have
    It would be important that when you create the Post you make screen copies of the error that the PV Master shows you in the android application in its own error log.
    In this forum you will find many people willing to help you but in general they will answer you if you are clear in the presentation of the problem.
    Regards !

  10. 3 hours ago, abrax said:

    at the top I see this inscription . What is the error?

    Screenshot 2023-03-24 145353.png

    It is not an error. It is an instant diagnostic code of some data about the operation of your power inverter.
    It is the same one that appears in the PV Master application at a certain time.
    If you think your inverter is malfunctioning, you can report this code to Goodwe Technical Service
    Don't worry. It is for advanced users.

    .

  11. You see Abrax, I don't know why you don't have your BackUp loads connected, it's the most important thing and the "Reason for Life" of a photovoltaic installation.
    In the Error Log, this is a perfectly Normal Alarm because downstream of the home installation there could be a short circuit or a ground discharge that would trigger the protections of the Essential Loads Board and here it shows you the time it occurs. If it appears at the beginning of its execution, it warns you of a situation that is not normal and desirable
    In reference to the Program Error that appears in the window that you show, it is correct, it appears in the event that you want to see the Hourly or Daily graphs and it is a BUG that appears for your particular installation since a situation was never contemplated in the program in which there is never consumption for Essential Loads. The program detects other data, but when the historical values of the essential loads (Back Up) are = 0, a failure situation occurs. Thanks for reporting it. I will correct this in the next review.

  12. 18 hours ago, abrax said:

    every now and then i get code 512 , i don't understand what it is . just yesterday when the electricity went out it gave me this error 512 and then code 0

    Hi @abrax , as P1000 tells you. the 512 error is a GRID power outage.
    This is an old post. At that time I was learning about this subject. In Version 4.xx all the errors of Goodwe and the explanation of it appear. They are the same ones that appear in the PV master record.

  13. I wanted to confirm that thanks to  @paul99  report, I proceeded to force a VAC FAIL condition in my house, manipulating the fault limits in the PV Master configuration for my country code.
    I can confirm that the data provided by Goodwe for non-essential loads is in error during the FAC or VAC fault condition. Probably a firmware bug.
    In the next version, upon detecting this condition, I will display the correct data coming out of the Logic in the schematic graph.
    In FAC Failure Condition or VAC Failure due to energy outside the limits established by the configured Country Code, the Inverter goes to Off Grid Work Mode in anomaly condition.
    In this condition, the AC Power Input to the Goodwe Inverter is cut to protect it and to protect the Bypass AC power supply to the Backup Loads, however this does not happen with the Non-Essential Loads that unfortunately continue to receive Power from the Grid (dirty energy ) with Over/Under Voltage Problems (VAC FAULT) or Frequency (FAC FAULT), since these loads are directly connected to the GRID.
    The data delivered by the Non-Essential Energy Load Sensor in Watts must be identical to the Total Value Imported from the GRID, since due to the FAC or VAC error condition, there can be no contribution of Batteries or PV Energy to those  non-essential loads
    In the next version (4.20), I will correct that misinformation from the same Goodwe sensor and the data in the schematic will make sense for that fault condition. It will also come with other news.

    @sakhir  Sorry for the delay. Today I send you your key.

    @abrax  Download the Program. Install it and privately send me the information that the program installation screen asks for. Try to write in English. Thank you.

  14. 12 minutes ago, abrax said:

    'm from Italy, I apologize for the type of English but I use Google Translate. You understood perfectly what I wanted to say. Another information: I saw on the "installation booklet" that if I set as Country Australia the inverter should give in discharge from the batteries 5000 kw. Is this possible?

    The inverter must configure it with your exact country code. I don't know about AC Power from Italy.
    The Goodwe Maximum Nominal Power Value is 4800 Watts (over 240 Volts), but since the voltage of the Countries is different, this varies slightly. It is better that you evaluate according to the Maximum Amperage that can be fed from the Back Up (essential) loads. this value is fixed:  20 Amp. Therefore, if a country has a Voltage of 230 Volts, the nominal maximum power will be 4600 Watts.

  15.  

    On 3/14/2023 at 3:38 PM, abrax said:

    hello, my GW5048D-ES inverter tends to give a slow response time when drawing from the batteries, when there are loads connected it starts drawing from the grid and slowly, slowly, it starts drawing from the batteries if there is no sun. my complaint is that it is not very quick to withdraw from the batteries, so the customer consumes from the network more often

    Your question is not very clear. Where are you from ?
    I assume you mean that when the Essential or Non-Essential Loads suddenly increase, there is a certain "Inertia" so that the Power coming from the PV or the Batteries (if they are available in sufficient quantity), can cover the instantaneous demand, until that moment. moment (just a few seconds) the Energy required by the loads is taken from the GRID.
    However, this completely changes in the event of a GRID power outage, as the inverter's Working Mode change is almost instantaneous (just a few milliseconds).
    This is normal Goodwe behavior. However, the power consumption of the GRID is minimal. It's only a few seconds.

  16. Difficult to understand for the newcomer to this world, but you always start somewhere.
    You must visualize the circulation of Alternating Current Energy as if it were Water.
    A hybrid inverter Imports Energy from the Grid (Grid Input) and Exports Energy to the Grid through the same connection point in the Inverter. Once the different configurations have been made according to the hybrid you buy, the excess PV that is not consumed (Essential Loads) can be used to charge the batteries, if there is even more surplus, the energy is directed backwards (from the same connection point). of the Inverter with the Grid (Grid Input), that energy will feed your Non-Essential Loads first and if you configure it and you still have Surplus, the rest will be Exported to the Grid.

  17. 12 hours ago, Colind said:

    Hello everyone,  As the section suggests I am new to this solar game.  I have looked through the posts on the forum and I am not finding the question I have, but if it has already been answered my apologies.

     

    I am looking for some advice around the installation of a hybrid inverter and the split of the essential and non essential load.  I am looking for an installation of a hybrid inverter that will supply PV and battery backup power to the bulk of my home and also supply PV power to my geyser and stove when there is generation capacity available.  When there is no PV generation available, the installation must supply battery backup to the house and use the grid to power the geyser and stove, or have no supply if there is load shedding. I am intending to split the DB boards to divide out the essential and non-essential loads.
     
    Reading the information available online and general discussion with installers I have understood that this is possible by splitting the loads as essential and non-essential through the inverter as shown roughly in the diagram below.
     
    image.png.5e0fa0b0d780918e206d646f5a387232.png

     
    One of the installers however has said that there is only a single output from the inverter; that my understanding of the connection is not correct and that the inverter connections are as shown below. The inverter then uses battery power to supply both loads if the grid fails.
     
    image.png.253df1aaab7db66e5e2e9ce59afc1eb0.png
     
     
    My questions are:
    1. Which one of these configurations are correct?
    2. If the inverter does have two outputs as shown in the first diagram, is the non-essential load included in the capacity limit of the inverter. i.e. if it is a 5 kw inverter and the geyser element draws 4 kw, does that only leave 1 kw to supply the essential load when the geyser is heating up?
    3. If there is only one output as in the second diagram how is the split between the loads managed to use PV power when available and grid when there is no PV capacity for the non essential load so that the battery only supplies the essential load when there is no PV available?
      1. Is there a signal output from the inverter that can be used to drive an automatic change-over switch for the non-essential load between inverter supply and direct grid supply when there is no PV generation?
     
    The answers are possibly not quite as simple as I have described above,  but I would be grateful to get some more information about the wiring options.

    None of the above schemes. The correct one (in a simplified way) is this:

     

    schema.jpg

  18. 1 hour ago, BritishRacingGreen said:

    Hi @Cefvery impressive work, well done.

    I am going to ask a potentially very dumb question. I have very limited knowledge about PV, except when cleaning it. 

    If you have two identical strings, but on different location/angles as per yours, what is the disadvantage of merely parralelling the two strings with steering diodes, as oppose to the way you doing it? 

     

    Hi @BritishRacingGreen
    If you put 2 strings in parallel on a single mppt, it's a particularly dangerous condition for power inverters that run on high DC voltages and low amperage, like Goodwe. When placing 2 chains in Parallel, the Amperages of each of them are added. For the particular case of Goodwe, the specifications say a maximum for each MPPT of 14 Amps (17.5 A short-circuit current) and 580 Volts.
    The operating amperages of the current configuration of the Brand and Model of the Panels that make up my two strings that alternately go to the same mppt at maximum power range from 10.5 amps to 12 amps. Near solar noon about 9 amps each. If they were in parallel, the inverter input burns.
    What this circuit does is automatically ensure that the inverter only takes one string at a time.
    Since the voltage drops for these relays at full power are negligible (less than 2 volts per relay), put a second relay in SERIES to act as a backup to ensure that if one burns out in an exceptionally closed condition, the other cut the current. when it remains in the condition determined by the TIMER. The literature on electronic RELAYS abounds that the mean life between failures is enormous. By placing 2 relays in series, the probability of a situation where both strings are placed in parallel is statistically insignificant.

  19. I present my solution, in the circuit that you can see in the image, to be able to connect 2 Strings to a single MPPT input of any power inverter, in my case East string and West string with automatic switching at a time close to solar noon to the PV2 input of my inverter.
    I have a Goodwe ES5048 inverter, for those who don't know, this almost 5Kw inverter has only 2 photovoltaic inputs (2 mppt) for 2 strings.
    The idea arose a little over 2 (two) years ago when I wanted to expand the area of solar panels to increase my solar production but I found myself with the problem of not having more space in my house to install more panels to the North.
    I was not interested in buying another inverter to have 2 more mppt, not only for a matter of physical space to install them, but because the Goodwe is not parallelizable with other equal ones and the fact of having to modify the electrical circuits of my house downstream of the inverters was a resounding "no" for me
    I have very good roofs at home to the West and East, so I began to investigate if there was any commercial solution for this purpose and I did not find anything.
    I designed this Circuit that I present to you now, but that I have been working at home since March 2021, exactly tested for 2 (two) years, working perfectly with the DC RELAY Values that appear in the photographs of the Real Board installed in my home. It has been tested in all temperatures and conditions.
    Before March 2021 I tried other 40 amp relays but they got too hot and I was afraid they would burn out. That's why I bought these that are 150 Amps and with the suggested aluminum heatsinks, even in the middle of summer with temperatures of 40 degrees, the heat dissipated is not high.
    It's a very simple circuit that anyone with an idea of elementary electronics/electricity can do.
    I could comment much more about it, but I prefer that you ask the questions that may arise.
    The relays and their heat sinks can be purchased on aliexpress. From 600 Volts DC they have up to 400 Amps.
    The timer can be purchased at any electrical/electronics store for a DIN board. It only matters that you have a Normal Open contact and a Normal Closed contact.
    The other thing that is needed is a low voltage DC source to open or close the relays, it can be from an old cell phone since it supports more than 5 Vdc.
    Really for me it was a solution that I am very happy with. None of the relays have burned out in two years of use. with an investment of a few dollars, minimal compared to the benefit it brings.
    The scheme is self-descriptive, so as not to lengthen this Post.

     

     

    Real Board.jpg

    2 Chains and one mppt.jpg

  20. 13 hours ago, Calvin said:

    Actually 40% (100-6000/100), which is why I expect that their curve must start flattening out at some point.

    Yes @Calvin that's right!, sorry, SOH reduction of 60% would leave it at 40% if it were a linear function.

    On the other hand, is it your own software development? or do you use ICC ?

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