move boolean regulating from equipment to RegulatingPoint

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/AbstractRegulatingEquipment.java

@@ -43,4 +43,11 @@ public Terminal getRegulatingTerminal() {
         return regulatingPoint.getRegulatingTerminal();
     }
 
+    public Boolean isRegulating() {
+        return regulatingPoint.isRegulating();
+    }
+
+    public void setRegulating(boolean regulating) {
+        regulatingPoint.setRegulating(regulating);
+    }
 }

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/GeneratorAdderImpl.java

@@ -131,7 +131,7 @@ public Generator add() {
 
         TerminalRefAttributes terminalRefAttributes = TerminalRefUtils.getTerminalRefAttributes(regulatingTerminal);
         RegulatingPointAttributes regulatingPointAttributes = new RegulatingPointAttributes(getId(), ResourceType.GENERATOR,
-            new TerminalRefAttributes(getId(), null), terminalRefAttributes, null, ResourceType.GENERATOR);
+            new TerminalRefAttributes(getId(), null), terminalRefAttributes, null, ResourceType.GENERATOR, voltageRegulatorOn);
 
         Resource<GeneratorAttributes> resource = Resource.generatorBuilder()
                 .id(id)
@@ -146,7 +146,6 @@ public Generator add() {
                         .energySource(energySource)
                         .maxP(maxP)
                         .minP(minP)
-                        .voltageRegulatorOn(voltageRegulatorOn)
                         .targetP(targetP)
                         .targetQ(targetQ)
                         .targetV(targetV)

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/GeneratorImpl.java

@@ -106,15 +106,15 @@ public void remove() {
 
     @Override
     public boolean isVoltageRegulatorOn() {
-        return getResource().getAttributes().isVoltageRegulatorOn();
+        return this.isRegulating();
     }
 
     @Override
     public Generator setVoltageRegulatorOn(boolean voltageRegulatorOn) {
         ValidationUtil.checkVoltageControl(this, voltageRegulatorOn, getTargetV(), getTargetQ(), ValidationLevel.STEADY_STATE_HYPOTHESIS, getNetwork().getReportNodeContext().getReportNode());
-        boolean oldValue = getResource().getAttributes().isVoltageRegulatorOn();
+        boolean oldValue = this.isRegulating();
         if (voltageRegulatorOn != oldValue) {
-            updateResource(res -> res.getAttributes().setVoltageRegulatorOn(voltageRegulatorOn));
+            this.setRegulating(voltageRegulatorOn);
             String variantId = index.getNetwork().getVariantManager().getWorkingVariantId();
             index.notifyUpdate(this, "voltageRegulatorOn", variantId, oldValue, voltageRegulatorOn);
         }

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/RegulatingPoint.java

@@ -102,7 +102,10 @@ private void resetRegulationMode(Terminal regulatingTerminal, Terminal localTerm
                 }
                 default -> throw new PowsyblException("No regulation for this kind of equipment");
             }
+            // the target can be inappropriated if it was a remote regulation
+            setRegulating(false);
         }
+        // if the regulating equipment was already regulating on his bus we reallocate the regulating point and we keep the regulation on
     }
 
     void remove() {
@@ -117,4 +120,12 @@ public String getRegulatingEquipmentId() {
     public ResourceType getRegulatingEquipmentType() {
         return getAttributes().getRegulatingResourceType();
     }
+
+    public Boolean isRegulating() {
+        return getAttributes().getRegulating();
+    }
+
+    public void setRegulating(boolean regulating) {
+        identifiable.updateResource(res -> getAttributes(res).setRegulating(regulating));
+    }
 }

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/ShuntCompensatorAdderImpl.java

@@ -210,7 +210,7 @@ public ShuntCompensator add() {
         ValidationUtil.checkVoltageControl(this, voltageRegulatorOn, targetV, ValidationLevel.STEADY_STATE_HYPOTHESIS, getNetwork().getReportNodeContext().getReportNode());
         ValidationUtil.checkTargetDeadband(this, "shunt compensator", voltageRegulatorOn, targetDeadband, ValidationLevel.STEADY_STATE_HYPOTHESIS, getNetwork().getReportNodeContext().getReportNode());
         RegulatingPointAttributes regulatingPointAttributes = new RegulatingPointAttributes(getId(), ResourceType.SHUNT_COMPENSATOR,
-            new TerminalRefAttributes(getId(), null), terminalRefAttributes, null, ResourceType.SHUNT_COMPENSATOR);
+            new TerminalRefAttributes(getId(), null), terminalRefAttributes, null, ResourceType.SHUNT_COMPENSATOR, voltageRegulatorOn);
 
         Resource<ShuntCompensatorAttributes> resource = Resource.shuntCompensatorBuilder()
                 .id(id)
@@ -225,7 +225,6 @@ public ShuntCompensator add() {
                         .sectionCount(sectionCount)
                         .model(model)
                         .regulatingPoint(regulatingPointAttributes)
-                        .voltageRegulatorOn(voltageRegulatorOn)
                         .targetV(targetV)
                         .targetDeadband(targetDeadband)
                         .build())

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/ShuntCompensatorImpl.java

@@ -117,16 +117,16 @@ public <M extends ShuntCompensatorModel> M getModel(Class<M> type) {
 
     @Override
     public boolean isVoltageRegulatorOn() {
-        return getResource().getAttributes().isVoltageRegulatorOn();
+        return this.isRegulating();
     }
 
     @Override
     public ShuntCompensator setVoltageRegulatorOn(boolean voltageRegulatorOn) {
         ValidationUtil.checkVoltageControl(this, voltageRegulatorOn, getTargetV(), ValidationLevel.STEADY_STATE_HYPOTHESIS, getNetwork().getReportNodeContext().getReportNode());
         ValidationUtil.checkTargetDeadband(this, "shunt compensator", voltageRegulatorOn, getTargetDeadband(), ValidationLevel.STEADY_STATE_HYPOTHESIS, getNetwork().getReportNodeContext().getReportNode());
-        boolean oldValue = getResource().getAttributes().isVoltageRegulatorOn();
+        boolean oldValue = this.isRegulating();
         if (voltageRegulatorOn != oldValue) {
-            updateResource(res -> res.getAttributes().setVoltageRegulatorOn(voltageRegulatorOn));
+            this.setRegulating(voltageRegulatorOn);
             String variantId = index.getNetwork().getVariantManager().getWorkingVariantId();
             index.notifyUpdate(this, "voltageRegulatorOn", variantId, oldValue, voltageRegulatorOn);
         }

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/StaticVarCompensatorAdderImpl.java

@@ -76,8 +76,9 @@ public StaticVarCompensator add() {
         ValidationUtil.checkRegulatingTerminal(this, regulatingTerminal, getNetwork());
 
         TerminalRefAttributes terminalRefAttributes = TerminalRefUtils.getTerminalRefAttributes(regulatingTerminal);
+        Boolean isRegulating = regulationMode == StaticVarCompensator.RegulationMode.VOLTAGE;
         RegulatingPointAttributes regulatingPointAttributes = new RegulatingPointAttributes(getId(), ResourceType.STATIC_VAR_COMPENSATOR,
-            new TerminalRefAttributes(getId(), null), terminalRefAttributes, String.valueOf(regulationMode), ResourceType.STATIC_VAR_COMPENSATOR);
+            new TerminalRefAttributes(getId(), null), terminalRefAttributes, String.valueOf(regulationMode), ResourceType.STATIC_VAR_COMPENSATOR, isRegulating);
         Resource<StaticVarCompensatorAttributes> resource = Resource.staticVarCompensatorBuilder()
                 .id(id)
                 .variantNum(index.getWorkingVariantNum())

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/VscConverterStationAdderImpl.java

@@ -58,7 +58,7 @@ public VscConverterStation add() {
 
         TerminalRefAttributes terminalRefAttributes = TerminalRefUtils.getTerminalRefAttributes(regulatingTerminal);
         RegulatingPointAttributes regulatingPointAttributes = new RegulatingPointAttributes(getId(), ResourceType.VSC_CONVERTER_STATION,
-            new TerminalRefAttributes(getId(), null), terminalRefAttributes, null, ResourceType.VSC_CONVERTER_STATION);
+            new TerminalRefAttributes(getId(), null), terminalRefAttributes, null, ResourceType.VSC_CONVERTER_STATION, voltageRegulatorOn);
 
         Resource<VscConverterStationAttributes> resource = Resource.vscConverterStationBuilder()
                 .id(id)
@@ -71,7 +71,6 @@ public VscConverterStation add() {
                         .bus(getBus())
                         .connectableBus(getConnectableBus() != null ? getConnectableBus() : getBus())
                         .lossFactor(getLossFactor())
-                        .voltageRegulatorOn(voltageRegulatorOn)
                         .voltageSetPoint(voltageSetPoint)
                         .reactivePowerSetPoint(reactivePowerSetPoint)
                         .regulatingPoint(regulatingPointAttributes)

network-store-iidm-impl/src/main/java/com/powsybl/network/store/iidm/impl/VscConverterStationImpl.java

@@ -35,15 +35,15 @@ public HvdcType getHvdcType() {
 
     @Override
     public boolean isVoltageRegulatorOn() {
-        return getResource().getAttributes().getVoltageRegulatorOn();
+        return this.isRegulating();
     }
 
     @Override
     public VscConverterStationImpl setVoltageRegulatorOn(boolean voltageRegulatorOn) {
         ValidationUtil.checkVoltageControl(this, voltageRegulatorOn, getVoltageSetpoint(), getReactivePowerSetpoint(), ValidationLevel.STEADY_STATE_HYPOTHESIS, getNetwork().getReportNodeContext().getReportNode());
-        boolean oldValue = getResource().getAttributes().getVoltageRegulatorOn();
+        boolean oldValue = this.isRegulating();
         if (voltageRegulatorOn != oldValue) {
-            updateResource(res -> res.getAttributes().setVoltageRegulatorOn(voltageRegulatorOn));
+            this.setRegulating(voltageRegulatorOn);
             String variantId = index.getNetwork().getVariantManager().getWorkingVariantId();
             index.notifyUpdate(this, "voltageRegulatorOn", variantId, oldValue, voltageRegulatorOn);
         }

network-store-iidm-impl/src/test/java/com/powsybl/network/store/iidm/impl/GeneratorTest.java

@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) 2024, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package com.powsybl.network.store.iidm.impl;
+
+import com.powsybl.iidm.network.Generator;
+import com.powsybl.iidm.network.Load;
+import com.powsybl.iidm.network.Network;
+import com.powsybl.iidm.network.test.FourSubstationsNodeBreakerFactory;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+/**
+ * @author Etienne Lesot <etienne.lesot at rte-france.com>
+ */
+class GeneratorTest {
+
+    @Test
+    void testRegulationWhenRegulatedElementIsRemoved() {
+        Network network = FourSubstationsNodeBreakerFactory.create();
+
+        // initialization
+        Generator generator = network.getGenerator("GH3");
+        Load load = network.getLoad("LD1");
+        Assertions.assertTrue(generator.isVoltageRegulatorOn());
+        Assertions.assertEquals(generator.getTerminal(), generator.getRegulatingTerminal());
+        Assertions.assertEquals(400, generator.getTargetV());
+
+        // set the generator's regulation on the load terminal (both equipments are not on the same voltage level/bus)
+        generator.setRegulatingTerminal(load.getTerminal());
+        generator.setTargetV(225);
+        Assertions.assertTrue(generator.isVoltageRegulatorOn());
+        Assertions.assertEquals(load.getTerminal(), generator.getRegulatingTerminal());
+        Assertions.assertEquals(225, generator.getTargetV());
+
+        // remove the load
+        network.getLoad("LD1").remove();
+        Assertions.assertEquals(generator.getTerminal(), generator.getRegulatingTerminal());
+        Assertions.assertFalse(generator.isVoltageRegulatorOn());
+    }
+
+    @Test
+    void testRegulationWhenRegulatedElementOnSameBusIsRemoved() {
+        Network network = FourSubstationsNodeBreakerFactory.create();
+
+        // initialization
+        Generator generator = network.getGenerator("GH3");
+        Load load = network.getLoad("LD2");
+        Assertions.assertTrue(generator.isVoltageRegulatorOn());
+        Assertions.assertEquals(generator.getTerminal(), generator.getRegulatingTerminal());
+
+        // set the generator's regulation on the load terminal (both equipments are on the same voltage level/bus)
+        generator.setRegulatingTerminal(load.getTerminal());
+        Assertions.assertTrue(generator.isVoltageRegulatorOn());
+        Assertions.assertEquals(load.getTerminal(), generator.getRegulatingTerminal());
+
+        // remove the load
+        network.getLoad("LD2").remove();
+        Assertions.assertEquals(generator.getTerminal(), generator.getRegulatingTerminal());
+        Assertions.assertTrue(generator.isVoltageRegulatorOn());
+    }
+}

network-store-model/src/main/java/com/powsybl/network/store/model/GeneratorAttributes.java

@@ -46,9 +46,6 @@ public class GeneratorAttributes extends AbstractRegulatingEquipmentAttributes i
     @Schema(description = "Maximum active power in MW")
     private double maxP;
 
-    @Schema(description = "Voltage regulation status")
-    private boolean voltageRegulatorOn;
-
     @Schema(description = "Active power target in MW")
     private double targetP;
 

network-store-model/src/main/java/com/powsybl/network/store/model/RegulatingPointAttributes.java

@@ -39,4 +39,7 @@ public class RegulatingPointAttributes extends AbstractAttributes implements Att
 
     @Schema(description = "Regulated equipment resource type")
     private ResourceType regulatedResourceType;
+
+    @Schema(description = "is regulating")
+    private Boolean regulating;
 }

network-store-model/src/main/java/com/powsybl/network/store/model/ShuntCompensatorAttributes.java

@@ -53,9 +53,6 @@ public class ShuntCompensatorAttributes extends AbstractRegulatingEquipmentAttri
     @Schema(description = "Connectable position (for substation diagram)")
     private ConnectablePositionAttributes position;
 
-    @Schema(description = "Voltage regulation status")
-    private boolean voltageRegulatorOn;
-
     @Schema(description = "targetV")
     private double targetV;
 

network-store-model/src/main/java/com/powsybl/network/store/model/VscConverterStationAttributes.java

@@ -40,9 +40,6 @@ public class VscConverterStationAttributes extends AbstractRegulatingEquipmentAt
     @Builder.Default
     private float lossFactor = Float.NaN;
 
-    @Schema(description = "Voltage regulator status")
-    private Boolean voltageRegulatorOn;
-
     @Schema(description = "Reactive power set point in MVar")
     private double reactivePowerSetPoint;
 

network-store-model/src/test/java/com/powsybl/network/store/model/TopLevelDocumentTest.java

@@ -95,7 +95,7 @@ public void testGenerator() throws IOException {
         TerminalRefAttributes regulatedTerminalAttributes =
             TerminalRefAttributes.builder().side("ONE").connectableId("idEq").build();
         RegulatingPointAttributes regulatingPointAttributes = new RegulatingPointAttributes("gen1", GENERATOR,
-            new TerminalRefAttributes("gen1", null), regulatedTerminalAttributes, null, GENERATOR);
+            new TerminalRefAttributes("gen1", null), regulatedTerminalAttributes, null, GENERATOR, true);
         Map<String, ResourceType> regEquipments = new HashMap<>();
         regEquipments.put("gen1", GENERATOR);
         regEquipments.put("gen2", GENERATOR);
@@ -123,7 +123,7 @@ public void testGenerator() throws IOException {
         TopLevelDocument document = TopLevelDocument.of(resourceGenerator);
         ObjectMapper objectMapper = JsonUtil.createObjectMapper();
         String json = objectMapper.writeValueAsString(document);
-        String jsonRef = "{\"data\":[{\"type\":\"GENERATOR\",\"id\":\"gen1\",\"variantNum\":0,\"attributes\":{\"name\":\"name\",\"fictitious\":false,\"extensionAttributes\":{},\"regulatingPoint\":{\"regulatingEquipmentId\":\"gen1\",\"regulatingResourceType\":\"GENERATOR\",\"localTerminal\":{\"connectableId\":\"gen1\"},\"regulatingTerminal\":{\"connectableId\":\"idEq\",\"side\":\"ONE\"},\"regulationMode\":null,\"regulatedResourceType\":\"GENERATOR\"},\"voltageLevelId\":\"vl1\",\"node\":1,\"bus\":\"bus1\",\"energySource\":\"HYDRO\",\"minP\":2.0,\"maxP\":1.0,\"voltageRegulatorOn\":false,\"targetP\":3.0,\"targetQ\":0.0,\"targetV\":4.0,\"ratedS\":0.0,\"p\":NaN,\"q\":NaN,\"condenser\":false,\"regulatingEquipments\":{\"gen1\":\"GENERATOR\",\"gen2\":\"GENERATOR\"}}}],\"meta\":{}}";
+        String jsonRef = "{\"data\":[{\"type\":\"GENERATOR\",\"id\":\"gen1\",\"variantNum\":0,\"attributes\":{\"name\":\"name\",\"fictitious\":false,\"extensionAttributes\":{},\"regulatingPoint\":{\"regulatingEquipmentId\":\"gen1\",\"regulatingResourceType\":\"GENERATOR\",\"localTerminal\":{\"connectableId\":\"gen1\"},\"regulatingTerminal\":{\"connectableId\":\"idEq\",\"side\":\"ONE\"},\"regulationMode\":null,\"regulatedResourceType\":\"GENERATOR\",\"regulating\":true},\"voltageLevelId\":\"vl1\",\"node\":1,\"bus\":\"bus1\",\"energySource\":\"HYDRO\",\"minP\":2.0,\"maxP\":1.0,\"targetP\":3.0,\"targetQ\":0.0,\"targetV\":4.0,\"ratedS\":0.0,\"p\":NaN,\"q\":NaN,\"condenser\":false,\"regulatingEquipments\":{\"gen1\":\"GENERATOR\",\"gen2\":\"GENERATOR\"}}}],\"meta\":{}}";
         assertEquals(jsonRef, json);
         TopLevelDocument document2 = objectMapper.readValue(json, TopLevelDocument.class);
         assertEquals(resourceGenerator, document2.getData().get(0));