PreferDcPowerOptimizer for improved multi-ESS hybrid coordination#3661
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timo-schlegel wants to merge 17 commits intoOpenEMS:developfrom
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PreferDcPowerOptimizer for improved multi-ESS hybrid coordination#3661timo-schlegel wants to merge 17 commits intoOpenEMS:developfrom
timo-schlegel wants to merge 17 commits intoOpenEMS:developfrom
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Fix NPE when allConstraints.size is smaller than allInverter.size. This occurs when constraint coefficients are missing for an ESS, for example, at startup when Ess-Power is not (yet) fully initialized. Fix NPE at KEEP_ZERO and change KEEP_ZERO handling by trying to solve zero as a solution, as there could be forced discharges or forced charges that may not allow a zero setpoint.
Use LESS_OR_EQUALS (on charge) and GREATER_OR_EQUALS (on discharge) instead of EQUALS
- Logic added to limit the maximum charge and discharge power to the lower and upper boundaries (as a safety measure). - Logic added to first force all ESSs to positive/negative/zero according to the target direction before attempting to set the power setpoints. - Return the result of the solved system, instead of creating a new sorted array.
- Implementation of reactive power handling - Implementation of JUnit tests - Code cleanup and improved logging handling - Minor changes (e.g. improvement of getMinPowerFromEss, getMaxPowerFromEss)
- Changed logging during debugMode to info instead of debug topic - Changed pvProduction in AbstractDummyManagedSymmetricEss from int to Integer - Removed class name from info logging when ess does not report PV production
- Skip distribution of PV production on KEEP_ZERO - This also skips the logging of this part in debug mode
- Ensure ESS constraints are prioritized during solving - Add tests for ESS constraint use cases
Resolve merge conflicts by incorporating both changes.
Follow-up to interface extension in ManagedSymmetricEss Implemented in: - AbstractGoodWe - KacoBlueplanetHybrid10EssImpl - SamsungEssImpl - EssFeneconCommercial40Impl
- Move getPvProduction() from ManagedSymmetricEss to HybridEss - Move getPvProduction() from AbstractDummyManagedSymmetricEss to DummyHybridEss - Move GoodWe implementation from AbstractGoodWe to GoodWeEssImpl - Adjust ESS implementations: KacoBlueplanetHybrid10EssImpl, SamsungEssImpl, EssFeneconCommercial40Impl - Update PreferDcPower to use getPvProduction() from HybridEss - Update PreferDcPower tests to use DummyHybridEss instead of DummyManagedSymmetricEss
Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## develop #3661 +/- ##
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+ Coverage 59.93% 60.20% +0.27%
Complexity 104 104
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Files 3191 3202 +11
Lines 140414 141568 +1154
Branches 10254 10554 +300
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+ Hits 84146 85216 +1070
+ Misses 53143 53104 -39
- Partials 3125 3248 +123 🚀 New features to boost your workflow:
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Summary
As discussed in the OpenEMS community thread:
https://community.openems.io/t/neuer-optimizer-logik-fur-mehrere-hybrid-esses/10138
This PR introduces the
PreferDcPowerOptimizerto improve behavior for systems with multiple hybrid ESS by prioritizing DC (PV) power and coordinating ESS usage.Motivation
In multi-ESS hybrid systems, current behavior can lead to inefficient operation:
Core Concept
The optimizer follows a strict prioritization strategy for active and reactive power distribution.
Active Power Distribution
Priority order:
Fulfill constraints on each ESS first
Distribute available PV production
Distribute remaining power using currently active ESS
Distribute remaining power across all ESS if required
Distribution Order
When distributing power:
Reactive Power Distribution
Step 1: Weighted Distribution (by priority)
Reactive power is distributed using calculated weights based on the following strategies (in priority order):
USE_DISCHARGING_ESS
Distribute reactive power proportional to the active power of all currently discharging ESS.
Only discharging ESS are used if they are sufficient.
(weight = activePowerOfThisEss / activePowerOfAllDischargingEss)
USE_IDLE_ESS
If discharging ESS are not sufficient:
Distribute reactive power proportional to the available reactive power capacity of all idle ESS.
(weight = maxQofThisEss / maxQTotalOfAllIdleEss)
USE_ALL_ESS
If still not sufficient:
Distribute reactive power proportional to the available reactive power capacity across all ESS.
(weight = maxQofThisEss / maxQTotalOfAllEss)
Constraints on ESS are respected in all cases.
Step 2: Fallback Distribution
If all weight strategies are exhausted and reactive power is still not fully distributed:
Distribution Order
Changes
Optimizer
PreferDcPowerOptimizerESS Extensions
Introduced
getPvProduction()inHybridEssImplemented in:
Impact