ESS-Power: alternative implementation without Linear Equation System

[sfeilmeier]

• This implementation does not use a Linear Equation System to validate set-points and distribute them to individual inverters
• Activated by new solver strategy BALANCE
• Move logic to PowerDistributionHandlers

See discussion in https://community.openems.io/t/neuer-optimizer-logik-fur-mehrere-hybrid-esses/10138/34

[codecov]

Codecov Report

❌ Patch coverage is 71.79487% with 110 lines in your changes missing coverage. Please review.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #3585      +/-   ##
=============================================
+ Coverage      58.59%   58.63%   +0.05%     
  Complexity       105      105              
=============================================
  Files           3091     3095       +4     
  Lines         134005   134314     +309     
  Branches        9882     9929      +47     
=============================================
+ Hits           78505    78742     +237     
- Misses         52593    52633      +40     
- Partials        2907     2939      +32     

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[Sn0w3y]

Currently @test on my local System with 3 ESSes :)
Looks VERY promising right now! What happens, if one of the ESSes is empty?
@sfeilmeier

[sfeilmeier]

Currently @test on my local System with 3 ESSes :)
Looks VERY promising right now! What happens, if one of the ESSes is empty?

Ok great. @pooran-c and @huseyinsaht are testing this also internally; I target a backport to OpenEMS in the near future. Then we can continue improving these distribution algorithms.

[Sn0w3y]

@sfeilmeier I discovered an Issue:

• Configure a ctrlEssGridOptimizedCharge
• Wait until one ESS of the Cluster is fully charged
• No Charge is executed at all anymore

Even if i deactivate the Controller the other 2 ESSes will not charge anymore

[sfeilmeier]

@Sn0w3y Implementation is not finished yet and I am not up-to-date on the features. Likely some parts are not yet implemented. Can you provide a fix?

[Sn0w3y]

@Sn0w3y Implementation is not finished yet and I am not up-to-date on the features. Likely some parts are not yet implemented. Can you provide a fix?

Unfortunately for the time beeing i did not find the Root-Cause. I will maybe look into it if i have the time :)

[pooran-c]

@Sn0w3y : What is the test configuration, ess0 = [ess1, ess2, ess3] ?
and what if ess3 is full, and wat will happen to charging ess0 ?

[Sn0w3y]

@Sn0w3y : What is the test configuration, ess0 = [ess1, ess2, ess3] ?

Correct ! I refactored the Code a little bit and test it locally - maybe i already found the Issue here ! :)

The tests i wrote for 3 ESSes were successfull though even with the original code :D

[Sn0w3y]

Found out, that the "Issue" has been introduced in here

Specifically here:
https://github.com/OpenEMS/openems/pull/3581/changes#r2884306889

if (target == 0) {
output = 0;
}

if i change it to my Comment all works perfectly fine for now - will test an report..

[sfeilmeier]

Note: this is partly included in #3624 -> 7cb0d28