Add DC contingencies

contingency/contingency-api/src/main/java/com/powsybl/contingency/Contingency.java

@@ -113,6 +113,10 @@ public boolean isValid(Network network) {
                 case TIE_LINE -> checkTieLineContingency(this, (TieLineContingency) element, network);
                 case SWITCH -> checkSwitchContingency(this, (SwitchContingency) element, network);
                 case BATTERY -> checkBatteryContingency(this, (BatteryContingency) element, network);
+                case VOLTAGE_SOURCE_CONVERTER -> checkVoltageSourceConverterContingency(this, (VoltageSourceConverterContingency) element, network);
+                case DC_LINE -> checkDcLineContingency(this, (DcLineContingency) element, network);
+                case DC_GROUND -> checkDcGroundContingency(this, (DcGroundContingency) element, network);
+                case DC_NODE -> checkDcNodeContingency(this, (DcNodeContingency) element, network);
             };
         }
         if (!valid) {
@@ -262,6 +266,42 @@ private static boolean checkSwitchContingency(Contingency contingency, SwitchCon
         return true;
     }
 
+    private static boolean checkVoltageSourceConverterContingency(Contingency contingency, VoltageSourceConverterContingency element, Network network) {
+        if (network.getVoltageSourceConverter(element.getId()) == null) {
+            LOGGER.warn("Converter '{}' of contingency '{}' not found", element.getId(), contingency.getId());
+            return false;
+        }
+        return true;
+    }
+
+    private static boolean checkDcLineContingency(Contingency contingency, DcLineContingency element, Network network) {
+        DcLine dcLine = network.getDcLine(element.getId());
+        if (dcLine == null
+                || element.getVoltageLevelId() != null
+                && !(element.getVoltageLevelId().equals(dcLine.getDcTerminal1().getDcNode().getId())
+                || element.getVoltageLevelId().equals(dcLine.getDcTerminal2().getDcNode().getId()))) {
+            LOGGER.warn("DcLine '{}' of contingency '{}' not found", element.getId(), contingency.getId());
+            return false;
+        }
+        return true;
+    }
+
+    private static boolean checkDcGroundContingency(Contingency contingency, DcGroundContingency element, Network network) {
+        if (network.getDcGround(element.getId()) == null) {
+            LOGGER.warn("DC Ground '{}' of contingency '{}' not found", element.getId(), contingency.getId());
+            return false;
+        }
+        return true;
+    }
+
+    private static boolean checkDcNodeContingency(Contingency contingency, DcNodeContingency element, Network network) {
+        if (network.getDcNode(element.getId()) == null) {
+            LOGGER.warn("DC Node '{}' of contingency '{}' not found", element.getId(), contingency.getId());
+            return false;
+        }
+        return true;
+    }
+
     public static ContingencyBuilder builder(String id) {
         return new ContingencyBuilder(id);
     }
@@ -399,4 +439,38 @@ public static Contingency bus(String busId) {
         return builder(busId).addBus(busId).build();
     }
 
+    /**
+     * Creates a new contingency on the converter whose id is given
+     */
+    public static Contingency voltageSourceConverter(String id) {
+        return builder(id).addVoltageSourceConverter(id).build();
+    }
+
+    /**
+     * Creates a new contingency on the dcLine whose id is given
+     */
+    public static Contingency dcLine(String id) {
+        return builder(id).addDcLine(id).build();
+    }
+
+    /**
+     * Creates a new contingency on the dcLine whose id is given, on the side of the given dcNode
+     */
+    public static Contingency dcLine(String id, String dcNodeId) {
+        return builder(id).addDcLine(id, dcNodeId).build();
+    }
+
+    /**
+     * Creates a new contingency on the dcGround whose id is given
+     */
+    public static Contingency dcGround(String id) {
+        return builder(id).addDcGround(id).build();
+    }
+
+    /**
+     * Creates a new contingency on the dcNode whose id is given
+     */
+    public static Contingency dcNode(String id) {
+        return builder(id).addDcNode(id).build();
+    }
 }

contingency/contingency-api/src/main/java/com/powsybl/contingency/ContingencyBuilder.java

@@ -153,4 +153,29 @@ public ContingencyBuilder addName(String name) {
         this.name = name;
         return this;
     }
+
+    public ContingencyBuilder addVoltageSourceConverter(String id) {
+        elements.add(new VoltageSourceConverterContingency(id));
+        return this;
+    }
+
+    public ContingencyBuilder addDcLine(String id, String dcNodeId) {
+        elements.add(new DcLineContingency(id, dcNodeId));
+        return this;
+    }
+
+    public ContingencyBuilder addDcLine(String id) {
+        elements.add(new DcLineContingency(id));
+        return this;
+    }
+
+    public ContingencyBuilder addDcGround(String id) {
+        elements.add(new DcGroundContingency(id));
+        return this;
+    }
+
+    public ContingencyBuilder addDcNode(String id) {
+        elements.add(new DcNodeContingency(id));
+        return this;
+    }
 }

contingency/contingency-api/src/main/java/com/powsybl/contingency/ContingencyElementFactory.java

@@ -39,7 +39,11 @@ private ContingencyElementFactory() {
             Map.entry(Battery.class, id -> new BatteryContingency(id.getId())),
             Map.entry(Bus.class, id -> new BusContingency(id.getId())),
             Map.entry(TieLine.class, id -> new TieLineContingency(id.getId())),
-            Map.entry(HvdcConverterStation.class, id -> new HvdcLineContingency(((HvdcConverterStation<?>) id).getHvdcLine().getId()))
+            Map.entry(HvdcConverterStation.class, id -> new HvdcLineContingency(((HvdcConverterStation<?>) id).getHvdcLine().getId())),
+            Map.entry(VoltageSourceConverter.class, id -> new VoltageSourceConverterContingency(id.getId())),
+            Map.entry(DcLine.class, id -> new DcLineContingency(id.getId())),
+            Map.entry(DcGround.class, id -> new DcGroundContingency(id.getId())),
+            Map.entry(DcNode.class, id -> new DcNodeContingency(id.getId()))
         );
 
     public static ContingencyElement create(Identifiable<?> identifiable) {

contingency/contingency-api/src/main/java/com/powsybl/contingency/ContingencyElementType.java

@@ -27,5 +27,9 @@ public enum ContingencyElementType {
     SWITCH,
     BATTERY,
     BUS,
-    TIE_LINE
+    TIE_LINE,
+    VOLTAGE_SOURCE_CONVERTER,
+    DC_LINE,
+    DC_GROUND,
+    DC_NODE
 }

contingency/contingency-api/src/main/java/com/powsybl/contingency/DcGroundContingency.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2025, SuperGrid Institute (https://www.supergrid-institute.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/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.contingency;
+
+import com.powsybl.iidm.modification.tripping.DcGroundTripping;
+import com.powsybl.iidm.modification.tripping.Tripping;
+
+/**
+ * @author Denis Bonnand {@literal <denis.bonnand at supergrid-institute.com>}
+ */
+public class DcGroundContingency extends AbstractContingency {
+
+    public DcGroundContingency(String id) {
+        super(id);
+    }
+
+    @Override
+    public ContingencyElementType getType() {
+        return ContingencyElementType.DC_GROUND;
+    }
+
+    @Override
+    public Tripping toModification() {
+        return new DcGroundTripping(id);
+    }
+}

contingency/contingency-api/src/main/java/com/powsybl/contingency/DcLineContingency.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) 2025, SuperGrid Institute (https://www.supergrid-institute.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/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.contingency;
+
+import com.powsybl.iidm.modification.tripping.DcLineTripping;
+import com.powsybl.iidm.modification.tripping.Tripping;
+
+import java.util.Objects;
+
+/**
+ * @author Denis Bonnand {@literal <denis.bonnand at supergrid-institute.com>}
+ */
+public class DcLineContingency extends AbstractSidedContingency {
+
+    public DcLineContingency(String id) {
+        super(id);
+    }
+
+    public DcLineContingency(String id, String dcNodeId) {
+        super(id, dcNodeId);
+    }
+
+    @Override
+    public ContingencyElementType getType() {
+        return ContingencyElementType.DC_LINE;
+    }
+
+    @Override
+    public Tripping toModification() {
+        return new DcLineTripping(id, voltageLevelId);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, voltageLevelId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (obj instanceof DcLineContingency other) {
+            return id.equals(other.id) && Objects.equals(voltageLevelId, other.voltageLevelId);
+        }
+        return false;
+    }
+}

contingency/contingency-api/src/main/java/com/powsybl/contingency/DcNodeContingency.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) 2025, SuperGrid Institute (https://www.supergrid-institute.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/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.contingency;
+
+import com.powsybl.iidm.modification.tripping.DcNodeTripping;
+import com.powsybl.iidm.modification.tripping.Tripping;
+
+/**
+ * @author Denis Bonnand {@literal <denis.bonnand at supergrid-institute.com>}
+ */
+public class DcNodeContingency extends AbstractContingency {
+
+    public DcNodeContingency(String id) {
+        super(id);
+    }
+
+    @Override
+    public ContingencyElementType getType() {
+        return ContingencyElementType.DC_NODE;
+    }
+
+    @Override
+    public Tripping toModification() {
+        return new DcNodeTripping(id);
+    }
+}

contingency/contingency-api/src/main/java/com/powsybl/contingency/VoltageSourceConverterContingency.java

@@ -0,0 +1,32 @@
+/**
+ * Copyright (c) 2025, SuperGrid Institute (https://www.supergrid-institute.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/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.contingency;
+
+import com.powsybl.iidm.modification.tripping.VoltageSourceConverterTripping;
+import com.powsybl.iidm.modification.tripping.Tripping;
+
+/**
+ * @author Denis Bonnand {@literal <denis.bonnand at supergrid-institute.com>}
+ */
+public class VoltageSourceConverterContingency extends AbstractContingency {
+
+    public VoltageSourceConverterContingency(String id) {
+        super(id);
+    }
+
+    @Override
+    public ContingencyElementType getType() {
+        return ContingencyElementType.VOLTAGE_SOURCE_CONVERTER;
+    }
+
+    @Override
+    public Tripping toModification() {
+        return new VoltageSourceConverterTripping(id);
+    }
+
+}

contingency/contingency-api/src/main/java/com/powsybl/contingency/json/ContingencyElementDeserializer.java

@@ -60,6 +60,10 @@ public ContingencyElement deserialize(JsonParser parser, DeserializationContext
                 case BATTERY -> new BatteryContingency(id);
                 case BUS -> new BusContingency(id);
                 case TIE_LINE -> new TieLineContingency(id, voltageLevelId);
+                case VOLTAGE_SOURCE_CONVERTER -> new VoltageSourceConverterContingency(id);
+                case DC_LINE -> new DcLineContingency(id);
+                case DC_GROUND -> new DcGroundContingency(id);
+                case DC_NODE -> new DcNodeContingency(id);
             };
         }
 

contingency/contingency-api/src/test/java/com/powsybl/contingency/DcGroundContingencyTest.java

@@ -0,0 +1,59 @@
+/**
+ * Copyright (c) 2025, SuperGrid Institute (https://www.supergrid-institute.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/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.contingency;
+
+import com.google.common.testing.EqualsTester;
+import com.powsybl.contingency.contingency.list.ContingencyList;
+import com.powsybl.iidm.modification.tripping.DcGroundTripping;
+import com.powsybl.iidm.network.Network;
+import com.powsybl.iidm.network.test.DcDetailedNetworkFactory;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * @author Denis Bonnand {@literal <denis.bonnand at supergrid-institute.com>}
+ */
+class DcGroundContingencyTest {
+
+    @Test
+    void test() {
+        DcGroundContingency contingency = new DcGroundContingency("id");
+        assertEquals("id", contingency.getId());
+        assertEquals(ContingencyElementType.DC_GROUND, contingency.getType());
+
+        assertNotNull(contingency.toModification());
+        assertInstanceOf(DcGroundTripping.class, contingency.toModification());
+
+        new EqualsTester()
+                .addEqualityGroup(new DcGroundContingency("g1"), new DcGroundContingency("g1"))
+                .testEquals();
+    }
+
+    @Test
+    void test2() {
+        Network network = DcDetailedNetworkFactory.createVscAsymmetricalMonopole();
+
+        ContingencyList contingencyList = ContingencyList.of(
+                Contingency.dcGround("dcGroundFr"),
+                Contingency.dcGround("dcGroundGb"),
+                Contingency.dcGround("UNKNOWN")
+        );
+
+        List<Contingency> contingencies = contingencyList.getContingencies(network);
+        assertEquals(2, contingencies.size());
+
+        DcGroundContingency dcGroundCtg = (DcGroundContingency) contingencies.getFirst().getElements().getFirst();
+        assertEquals("dcGroundFr", dcGroundCtg.getId());
+
+        dcGroundCtg = (DcGroundContingency) contingencies.get(1).getElements().getFirst();
+        assertEquals("dcGroundGb", dcGroundCtg.getId());
+    }
+}