batmax

Ok. As you describe it, I think it's a good question. I don't have lithium batteries. From this thread maybe @Beylie, @FixAMess , among others I think they have to be clear about this issue.

I present this program that I share with you in its VERSION 2.0. It is only for Goodwe Series "ES", that is, for GW3648D-ES and GW5048D-ES.

It has been developed solely for academic and hobby purposes, without any commercial objective.
With reference to Version 1.0 of the download area of the forum, beyond the correction of errors, small aesthetic changes, elimination of erroneous information from Goodwe itself (e_day and e_total), the self-discovery of the Power Inverter within the LAN network and adding battery self-defining parameters, I found it interesting to focus on one of Goodwe's weak points, which is the error log.

Like most users who have experienced them and beyond the degree of technical knowledge, I would have liked Goodwe some more information when a "trip" occurs due to different circumstances during the use of batteries, normal operation or provoked with reference to The Working Load and Maximum Powers allowed, either in essential or non-essential loads or in both.

The operating parameters in the event of an error, the SEMS PORTAL shows them with 1 (minute) between data, a true eternity, this is of little use and the resulting query is frustrating, generally.
This topic has been mentioned among other threads here:
https://powerforum.co.za/topic/4272-victron-easysolar-5kva-or-goodwe-5048d-es/?tab=comments#comment-68163
https://powerforum.co.za/topic/6782-goodwe-tripping-problem/
https://powerforum.co.za/topic/5068-tripping-of-goodwe-inverter/
https://powerforum.co.za/topic/6275-goodwe-5048es-not-restarting-after-backup-output-trips/page/2/
https://powerforum.co.za/topic/5304-goodwe-cutting-power-to-house/
https://powerforum.co.za/topic/7085-goodwe-5048d-es-fault-tripped-with-a-bang/
Trip events ARE NOT REGISTERED by GOODWE, at least not in all circumstances from what I have seen.
Goodwe records some events that are of some use, but there are not many. These can be consulted in the PV Master application as you already know and with a descriptive text. In this system that I make available to the PowerPhorum community, the option * Error / event log * shows the GOODWE events registered in PV Master, whose code I have been able to associate with a description in red letters on a white background and with the In order for this to have a greater sense and utility, I have added to this register the fundamental parameters of Operation at the time of the Device Error, such as Temperature, Apparent Power (workload), Effective, Voltages, Loads, Batteries, etc.
The rest of the Events appear with the name "System", of these there is a group in black letters and a red background that are the Reset and Trip events, because when Goodwe is reset it does not leave any record. To partially solve this, the parameters that I show in these cases are the live values taken "1 (one) sample before the event", that is, if the update of the live data you want to set it to, for example, 1000 milliseconds and The this system finds that Goodwe rebooted at 10:25:30, for example, in the Event Log you will see the live data logged up to 10:25:29.
To be more accurate than what the Goodwe readings give, if you have higher precision instruments than the device sensors, for example with external AC meters like the Eastron SDM series,Carlo Gavazzi, etc., or for batteries using a multimeter or with a Victron BMB600 or BMV702 connected between the batteries and the Inverter, in the OPTION "PARAMETERS" the AC Voltage values can be corrected and, on the other hand, Current or DC Voltages in the state of charge or discharge of the batteries in +/- to the hundredth of a volt or ampere. In this case, in the "LIVE DATA" section of the left panel, the parameter with the [c] indication will appear. If you accept the direct Goodwe values without any correction, just leave the values at "0", I have also added the Goodwe "Self-Consumption" Value for better precision in energy calculations. My device draws between 60 and 66 watts, which is more than the manufacturer reports. You can adjust other values for greater precision that are self-explanatory.
They will also have an idea of the actual maximum daily PV voltages and amps under load conditions (V imp and A imp) of each string, which can guide us to make modifications to our strings by pushing a little further towards the Goodwe limit in a more safe.
The maximum daily values of some parameters appear on the main screen of the scheme. I emphasize that to update a maximum value, internally I consider it only if 2 (two) consecutive samples are higher than the previous one, this in order to avoid peaks due to AC harmonics and / or other electrical disturbances with very instantaneous peaks.

Your comments and suggestions welcome!