generation dispatch : allow out of active power limits generator to scale (#273)

* Use new scaling parameter to allow generator to scale even if their initial target P is out of the active power limits.

Signed-off-by: Franck LECUYER <[email protected]>

Author: FranckLecuyer

src/main/java/org/gridsuite/modification/server/modifications/GenerationDispatch.java

@@ -12,6 +12,7 @@
 import com.powsybl.commons.reporter.Reporter;
 import com.powsybl.commons.reporter.TypedValue;
 import com.powsybl.iidm.modification.scalable.Scalable;
+import com.powsybl.iidm.modification.scalable.ScalingParameters;
 import com.powsybl.iidm.network.Bus;
 import com.powsybl.iidm.network.Component;
 import com.powsybl.iidm.network.DefaultNetworkListener;
@@ -375,7 +376,7 @@ public void apply(Network network, Reporter subReporter, ApplicationContext cont
                 network.addListener(listener);
 
                 Scalable scalable = Scalable.stack(generatorsScalable.toArray(Scalable[]::new));
-                realized = scalable.scale(network, totalAmountSupplyToBeDispatched);
+                realized = scalable.scale(network, totalAmountSupplyToBeDispatched, new ScalingParameters().setAllowsGeneratorOutOfActivePowerLimits(true));
 
                 network.removeListener(listener);
             }

src/test/java/org/gridsuite/modification/server/modifications/GenerationDispatchTest.java

@@ -338,6 +338,7 @@ public void testGenerationDispatchWithFrequencyReserve() {
 
         // network with 2 synchronous components, 2 hvdc lines between them, forcedOutageRate and plannedOutageRate defined for the generators
         setNetwork(Network.read("testGenerationDispatchReduceMaxP.xiidm", getClass().getResourceAsStream("/testGenerationDispatchReduceMaxP.xiidm")));
+        getNetwork().getGenerator("GH1").setMinP(20.);  // to test scaling parameter allowsGeneratorOutOfActivePowerLimits
 
         List<FilterEquipments> filtersForPmaxReduction = List.of(getFilterEquipments(FILTER_ID_1, "filter1", List.of(getIdentifiableAttributes(GTH2_ID), getIdentifiableAttributes(GROUP1_ID)), List.of()),
             getFilterEquipments(FILTER_ID_2, "filter2", List.of(getIdentifiableAttributes(ABC_ID), getIdentifiableAttributes(GH3_ID)), List.of()),