CGMES extensions SerDe fixes (powsybl#3145)

* Add binary write/read in cgmes extensions roundtrip unit tests * Add binary read/write in entsoe roundrip unit test * Enrich CgmesLineBoundaryNode unit test * Fix CgmesLineBoundaryNode SerDe * Fix CgmesDanglingLineBoundaryNode SerDe * Fix CgmesTapChangers SerDe * Fix BaseVoltageMapping SerDe * Add CgmesDanglingLineBoundaryNode unit test * Add CgmesTapChangers unit test * Add BaseVoltageMapping unit test * Rename private static method in unit tests * Factorize duplicated code Signed-off-by: Florian Dupuy <[email protected]>
lf-energy-projects-renovation-state · Sep 23, 2024 · ddbef02 · ddbef02
1 parent f9a167d
commit ddbef02
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Showing 14 changed files with 272 additions and 28 deletions.
diff --git a/.../cgmes-extensions/src/main/java/com/powsybl/cgmes/extensions/BaseVoltageMappingSerDe.java b/.../cgmes-extensions/src/main/java/com/powsybl/cgmes/extensions/BaseVoltageMappingSerDe.java
@@ -64,10 +64,10 @@ public BaseVoltageMapping read(Network extendable, DeserializerContext context)
         context.getReader().readChildNodes(elementName -> {
             if (elementName.equals(BASE_VOLTAGE_ROOT_ELEMENT)) {
                 double nominalV = context.getReader().readDoubleAttribute("nominalVoltage");
-                String sourceBV = context.getReader().readStringAttribute("source");
+                Source sourceBV = context.getReader().readEnumAttribute("source", Source.class);
                 String baseVoltageId = context.getReader().readStringAttribute("id");
                 context.getReader().readEndNode();
-                mapping.addBaseVoltage(nominalV, baseVoltageId, Source.valueOf(sourceBV));
+                mapping.addBaseVoltage(nominalV, baseVoltageId, sourceBV);
             } else {
                 throw new PowsyblException("Unknown element name '" + elementName + "' in 'baseVoltageMapping'");
             }

diff --git a/...nsions/src/main/java/com/powsybl/cgmes/extensions/CgmesDanglingLineBoundaryNodeSerDe.java b/...nsions/src/main/java/com/powsybl/cgmes/extensions/CgmesDanglingLineBoundaryNodeSerDe.java
@@ -29,8 +29,7 @@ public CgmesDanglingLineBoundaryNodeSerDe() {
     @Override
     public void write(CgmesDanglingLineBoundaryNode extension, SerializerContext context) {
         context.getWriter().writeBooleanAttribute("isHvdc", extension.isHvdc());
-        extension.getLineEnergyIdentificationCodeEic().ifPresent(lineEnergyIdentificationCodeEic ->
-                context.getWriter().writeStringAttribute("lineEnergyIdentificationCodeEic", lineEnergyIdentificationCodeEic));
+        context.getWriter().writeStringAttribute("lineEnergyIdentificationCodeEic", extension.getLineEnergyIdentificationCodeEic().orElse(null));
     }
 
     @Override

diff --git a/...mes-extensions/src/main/java/com/powsybl/cgmes/extensions/CgmesLineBoundaryNodeSerDe.java b/...mes-extensions/src/main/java/com/powsybl/cgmes/extensions/CgmesLineBoundaryNodeSerDe.java
@@ -29,8 +29,7 @@ public CgmesLineBoundaryNodeSerDe() {
     @Override
     public void write(CgmesLineBoundaryNode extension, SerializerContext context) {
         context.getWriter().writeBooleanAttribute("isHvdc", extension.isHvdc());
-        extension.getLineEnergyIdentificationCodeEic().ifPresent(lineEnergyIdentificationCodeEic ->
-                context.getWriter().writeStringAttribute("lineEnergyIdentificationCodeEic", lineEnergyIdentificationCodeEic));
+        context.getWriter().writeStringAttribute("lineEnergyIdentificationCodeEic", extension.getLineEnergyIdentificationCodeEic().orElse(null));
     }
 
     @Override

diff --git a/cgmes/cgmes-extensions/src/main/java/com/powsybl/cgmes/extensions/CgmesTapChangersSerDe.java b/cgmes/cgmes-extensions/src/main/java/com/powsybl/cgmes/extensions/CgmesTapChangersSerDe.java
@@ -72,9 +72,9 @@ public CgmesTapChangers<C> read(C extendable, DeserializerContext context) {
                         .setId(reader.readStringAttribute("id"))
                         .setCombinedTapChangerId(reader.readStringAttribute("combinedTapChangerId"))
                         .setType(reader.readStringAttribute("type"))
-                        .setHiddenStatus(reader.readBooleanAttribute("hidden", false))
-                        .setControlId(reader.readStringAttribute("controlId"));
+                        .setHiddenStatus(reader.readBooleanAttribute("hidden", false));
                 reader.readOptionalIntAttribute("step").ifPresent(adder::setStep);
+                adder.setControlId(reader.readStringAttribute("controlId"));
                 context.getReader().readEndNode();
                 adder.add();
             } else {

diff --git a/...mes-extensions/src/test/java/com/powsybl/cgmes/extensions/AbstractCgmesExtensionTest.java b/...mes-extensions/src/test/java/com/powsybl/cgmes/extensions/AbstractCgmesExtensionTest.java
@@ -26,10 +26,23 @@
 public abstract class AbstractCgmesExtensionTest extends AbstractSerDeTest {
 
     protected void allFormatsRoundTripTest(Network network, String xmlRefFile) throws IOException {
-        roundTripXmlTest(network, this::jsonWriteAndRead, NetworkSerDe::write, NetworkSerDe::validateAndRead, xmlRefFile);
+        roundTripXmlTest(network,
+                (n, p) -> binWriteAndRead(jsonWriteAndRead(n, p), p),
+                NetworkSerDe::write,
+                NetworkSerDe::validateAndRead,
+                xmlRefFile);
     }
 
-    private Network jsonWriteAndRead(Network network, Path path) {
+    private static Network binWriteAndRead(Network network, Path path) {
+        var anonymizer = NetworkSerDe.write(network, new ExportOptions().setFormat(TreeDataFormat.BIN), path);
+        try (InputStream is = Files.newInputStream(path)) {
+            return NetworkSerDe.read(is, new ImportOptions().setFormat(TreeDataFormat.BIN), anonymizer);
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
+    private static Network jsonWriteAndRead(Network network, Path path) {
         var anonymizer = NetworkSerDe.write(network, new ExportOptions().setFormat(TreeDataFormat.JSON), path);
         try (InputStream is = Files.newInputStream(path)) {
             return NetworkSerDe.read(is, new ImportOptions().setFormat(TreeDataFormat.JSON), anonymizer);

diff --git a/...es-extensions/src/test/java/com/powsybl/cgmes/extensions/BaseVoltageMappingSerDeTest.java b/...es-extensions/src/test/java/com/powsybl/cgmes/extensions/BaseVoltageMappingSerDeTest.java
@@ -0,0 +1,32 @@
+/**
+ * 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/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.cgmes.extensions;
+
+import com.powsybl.iidm.network.Network;
+import com.powsybl.iidm.network.test.NoEquipmentNetworkFactory;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.time.ZonedDateTime;
+
+/**
+ * @author Florian Dupuy {@literal <florian.dupuy at rte-france.com>}
+ */
+class BaseVoltageMappingSerDeTest extends AbstractCgmesExtensionTest {
+
+    @Test
+    void test() throws IOException {
+        Network network = NoEquipmentNetworkFactory.create();
+        network.setCaseDate(ZonedDateTime.parse("2024-09-17T13:36:37.831Z"));
+        network.newExtension(BaseVoltageMappingAdder.class)
+                .addBaseVoltage("id_400", 400, Source.IGM)
+                .addBaseVoltage("id_380", 380, Source.BOUNDARY)
+                .add();
+        allFormatsRoundTripTest(network, "/no_equipment_base_voltage_mapping.xml");
+    }
+}
diff --git a/...sions/CgmesLineBoundaryNodeSerDeTest.java → ...xtensions/CgmesBoundaryNodeSerDeTest.java b/...sions/CgmesLineBoundaryNodeSerDeTest.java → ...xtensions/CgmesBoundaryNodeSerDeTest.java
@@ -16,15 +16,34 @@
 /**
  * @author Miora Ralambotiana {@literal <miora.ralambotiana at rte-france.com>}
  */
-class CgmesLineBoundaryNodeSerDeTest extends AbstractCgmesExtensionTest {
+class CgmesBoundaryNodeSerDeTest extends AbstractCgmesExtensionTest {
 
     @Test
-    void test() throws IOException {
+    void testTieLine() throws IOException {
         Network network = EurostagTutorialExample1Factory.createWithTieLine();
         network.getTieLine("NHV1_NHV2_1").newExtension(CgmesLineBoundaryNodeAdder.class)
                 .setHvdc(true)
                 .setLineEnergyIdentificationCodeEic("EIC_CODE")
                 .add();
+        network.getTieLine("NHV1_NHV2_2").newExtension(CgmesLineBoundaryNodeAdder.class)
+                .setHvdc(true)
+                .add();
         allFormatsRoundTripTest(network, "/eurostag_cgmes_line_boundary_node.xml");
     }
+
+    @Test
+    void testDanglingLine() throws IOException {
+        Network network = EurostagTutorialExample1Factory.createWithTieLine();
+        var tl = network.getTieLine("NHV1_NHV2_1");
+        tl.getDanglingLine1().newExtension(CgmesDanglingLineBoundaryNodeAdder.class)
+                .setHvdc(false)
+                .setLineEnergyIdentificationCodeEic("EIC_CODE")
+                .add();
+        tl.getDanglingLine2().newExtension(CgmesDanglingLineBoundaryNodeAdder.class)
+                .setHvdc(false)
+                .add();
+        tl.remove();
+
+        allFormatsRoundTripTest(network, "/eurostag_cgmes_dangling_line_boundary_node.xml");
+    }
 }
diff --git a/...gmes-extensions/src/test/java/com/powsybl/cgmes/extensions/CgmesTapChangersSerDeTest.java b/...gmes-extensions/src/test/java/com/powsybl/cgmes/extensions/CgmesTapChangersSerDeTest.java
@@ -0,0 +1,48 @@
+/**
+ * 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/.
+ * SPDX-License-Identifier: MPL-2.0
+ */
+package com.powsybl.cgmes.extensions;
+
+import com.powsybl.iidm.network.Network;
+import com.powsybl.iidm.network.ThreeWindingsTransformer;
+import com.powsybl.iidm.network.TwoWindingsTransformer;
+import com.powsybl.iidm.network.test.EurostagTutorialExample1Factory;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.time.ZonedDateTime;
+
+/**
+ * @author Florian Dupuy {@literal <florian.dupuy at rte-france.com>}
+ */
+class CgmesTapChangersSerDeTest extends AbstractCgmesExtensionTest {
+
+    @Test
+    void test() throws IOException {
+        Network network = EurostagTutorialExample1Factory.createWith3wTransformer();
+        network.setCaseDate(ZonedDateTime.parse("2024-09-17T12:01:34.831Z"));
+        TwoWindingsTransformer twoWT = network.getTwoWindingsTransformer("NGEN_NHV1");
+        CgmesTapChangers<TwoWindingsTransformer> ctc2wt = ((CgmesTapChangersAdder<TwoWindingsTransformer>) twoWT.newExtension(CgmesTapChangersAdder.class)).add();
+        ctc2wt.newTapChanger()
+                .setId("tc1")
+                .setControlId("control1")
+                .setType("type1")
+                .setHiddenStatus(false)
+                .add();
+        ThreeWindingsTransformer threeWT = network.getThreeWindingsTransformer("NGEN_V2_NHV1");
+        CgmesTapChangers<ThreeWindingsTransformer> ctc3wt = ((CgmesTapChangersAdder<ThreeWindingsTransformer>) threeWT.newExtension(CgmesTapChangersAdder.class)).add();
+        ctc3wt.newTapChanger()
+                .setId("tc2")
+                .setCombinedTapChangerId("ctc2")
+                .setStep(1)
+                .setControlId("control2")
+                .setType("type2")
+                .setHiddenStatus(true)
+                .add();
+        allFormatsRoundTripTest(network, "/eurostag_cgmes_tap_changers.xml");
+    }
+}
diff --git a/cgmes/cgmes-extensions/src/test/resources/eurostag_cgmes_dangling_line_boundary_node.xml b/cgmes/cgmes-extensions/src/test/resources/eurostag_cgmes_dangling_line_boundary_node.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_13" xmlns:cdlbn="http://www.powsybl.org/schema/iidm/ext/cgmes_dangling_line_boundary_node/1_0" id="sim1" caseDate="2013-01-15T18:45:00.000+01:00" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="P1" country="FR" tso="RTE" geographicalTags="A">
+        <iidm:voltageLevel id="VLGEN" nominalV="24.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="NGEN" v="24.500000610351563" angle="2.3259763717651367"/>
+            </iidm:busBreakerTopology>
+            <iidm:generator id="GEN" energySource="OTHER" minP="-9999.99" maxP="9999.99" voltageRegulatorOn="true" targetP="607.0" targetV="24.5" targetQ="301.0" bus="NGEN" connectableBus="NGEN" p="-605.558349609375" q="-225.2825164794922">
+                <iidm:minMaxReactiveLimits minQ="-9999.99" maxQ="9999.99"/>
+            </iidm:generator>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="VLHV1" nominalV="380.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="NHV1" v="402.1428451538086" angle="0.0"/>
+            </iidm:busBreakerTopology>
+            <iidm:danglingLine id="NHV1_XNODE1" p0="0.0" q0="0.0" r="1.5" x="20.0" g="1.0E-6" b="1.93E-4" pairingKey="XNODE1" bus="NHV1" connectableBus="NHV1" p="302.4440612792969" q="98.74027252197266"/>
+            <iidm:danglingLine id="NVH1_XNODE2" p0="0.0" q0="0.0" r="1.5" x="20.0" g="1.0E-6" b="1.93E-4" pairingKey="XNODE2" bus="NHV1" connectableBus="NHV1" p="302.4440612792969" q="98.74027252197266"/>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="NGEN_NHV1" r="0.26658461538461536" x="11.104492831516762" g="0.0" b="0.0" ratedU1="24.0" ratedU2="400.0" bus1="NGEN" connectableBus1="NGEN" voltageLevelId1="VLGEN" bus2="NHV1" connectableBus2="NHV1" voltageLevelId2="VLHV1" p1="605.558349609375" q1="225.2825164794922" p2="-604.8909301757812" q2="-197.48046875"/>
+    </iidm:substation>
+    <iidm:substation id="P2" country="FR" tso="RTE" geographicalTags="B">
+        <iidm:voltageLevel id="VLHV2" nominalV="380.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="NHV2" v="389.9526763916016" angle="-3.5063576698303223"/>
+            </iidm:busBreakerTopology>
+            <iidm:danglingLine id="XNODE1_NHV2" p0="0.0" q0="0.0" r="1.5" x="13.0" g="2.0E-6" b="1.93E-4" pairingKey="XNODE1" bus="NHV2" connectableBus="NHV2" p="-300.43389892578125" q="-137.18849182128906"/>
+            <iidm:danglingLine id="XNODE2_NHV2" p0="0.0" q0="0.0" r="1.5" x="13.0" g="2.0E-6" b="1.93E-4" pairingKey="XNODE2" bus="NHV2" connectableBus="NHV2" p="-300.43389892578125" q="-137.18849182128906"/>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="VLLOAD" nominalV="150.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="NLOAD" v="147.57861328125" angle="-9.614486694335938"/>
+            </iidm:busBreakerTopology>
+            <iidm:load id="LOAD" loadType="UNDEFINED" p0="600.0" q0="200.0" bus="NLOAD" connectableBus="NLOAD" p="600.0" q="200.0"/>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="NHV2_NLOAD" r="0.04724999999999999" x="4.049724365620455" g="0.0" b="0.0" ratedU1="400.0" ratedU2="158.0" bus1="NHV2" connectableBus1="NHV2" voltageLevelId1="VLHV2" bus2="NLOAD" connectableBus2="NLOAD" voltageLevelId2="VLLOAD" p1="600.8677978515625" q1="274.3769836425781" p2="-600.0" q2="-200.0">
+            <iidm:ratioTapChanger lowTapPosition="0" tapPosition="1" targetDeadband="0.0" loadTapChangingCapabilities="true" regulating="true" regulationMode="VOLTAGE" regulationValue="158.0">
+                <iidm:terminalRef id="NHV2_NLOAD" side="TWO"/>
+                <iidm:step r="0.0" x="0.0" g="0.0" b="0.0" rho="0.8505666905244191"/>
+                <iidm:step r="0.0" x="0.0" g="0.0" b="0.0" rho="1.0006666666666666"/>
+                <iidm:step r="0.0" x="0.0" g="0.0" b="0.0" rho="1.150766642808914"/>
+            </iidm:ratioTapChanger>
+        </iidm:twoWindingsTransformer>
+    </iidm:substation>
+    <iidm:tieLine id="NHV1_NHV2_2" danglingLineId1="NVH1_XNODE2" danglingLineId2="XNODE2_NHV2"/>
+    <iidm:extension id="XNODE1_NHV2">
+        <cdlbn:cgmesDanglingLineBoundaryNode isHvdc="false"/>
+    </iidm:extension>
+    <iidm:extension id="NHV1_XNODE1">
+        <cdlbn:cgmesDanglingLineBoundaryNode isHvdc="false" lineEnergyIdentificationCodeEic="EIC_CODE"/>
+    </iidm:extension>
+</iidm:network>
diff --git a/cgmes/cgmes-extensions/src/test/resources/eurostag_cgmes_line_boundary_node.xml b/cgmes/cgmes-extensions/src/test/resources/eurostag_cgmes_line_boundary_node.xml
@@ -43,6 +43,9 @@
     </iidm:substation>
     <iidm:tieLine id="NHV1_NHV2_1" danglingLineId1="NHV1_XNODE1" danglingLineId2="XNODE1_NHV2"/>
     <iidm:tieLine id="NHV1_NHV2_2" danglingLineId1="NVH1_XNODE2" danglingLineId2="XNODE2_NHV2"/>
+    <iidm:extension id="NHV1_NHV2_2">
+        <clbn:cgmesLineBoundaryNode isHvdc="true"/>
+    </iidm:extension>
     <iidm:extension id="NHV1_NHV2_1">
         <clbn:cgmesLineBoundaryNode isHvdc="true" lineEnergyIdentificationCodeEic="EIC_CODE"/>
     </iidm:extension>

diff --git a/cgmes/cgmes-extensions/src/test/resources/eurostag_cgmes_tap_changers.xml b/cgmes/cgmes-extensions/src/test/resources/eurostag_cgmes_tap_changers.xml
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_13" xmlns:ctc="http://www.powsybl.org/schema/iidm/ext/cgmes_tap_changers/1_0" id="sim1" caseDate="2024-09-17T12:01:34.831Z" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="P1" country="FR" tso="RTE" geographicalTags="A">
+        <iidm:voltageLevel id="VLGEN" nominalV="24.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="NGEN"/>
+            </iidm:busBreakerTopology>
+            <iidm:generator id="GEN" energySource="OTHER" minP="-9999.99" maxP="9999.99" voltageRegulatorOn="true" targetP="607.0" targetV="24.5" targetQ="301.0" bus="NGEN" connectableBus="NGEN">
+                <iidm:minMaxReactiveLimits minQ="-9999.99" maxQ="9999.99"/>
+            </iidm:generator>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="VLHV1" nominalV="380.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="NHV1"/>
+            </iidm:busBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="V2" nominalV="150.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="N2"/>
+            </iidm:busBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:twoWindingsTransformer id="NGEN_NHV1" r="0.26658461538461536" x="11.104492831516762" g="0.0" b="0.0" ratedU1="24.0" ratedU2="400.0" voltageLevelId1="VLGEN" bus1="NGEN" connectableBus1="NGEN" voltageLevelId2="VLHV1" bus2="NHV1" connectableBus2="NHV1"/>
+        <iidm:threeWindingsTransformer id="NGEN_V2_NHV1" r1="0.001" x1="1.0E-6" g1="0.0" b1="0.0" ratedU1="400.0" r2="0.1" x2="1.0E-5" g2="0.0" b2="0.0" ratedU2="150.0" r3="0.01" x3="1.0E-4" g3="0.0" b3="0.0" ratedU3="24.0" ratedU0="400.0" voltageLevelId1="VLHV1" bus1="NHV1" connectableBus1="NHV1" voltageLevelId2="V2" bus2="N2" connectableBus2="N2" voltageLevelId3="VLGEN" bus3="NGEN" connectableBus3="NGEN"/>
+    </iidm:substation>
+    <iidm:substation id="P2" country="FR" tso="RTE" geographicalTags="B">
+        <iidm:voltageLevel id="VLHV2" nominalV="380.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="NHV2"/>
+            </iidm:busBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="VLLOAD" nominalV="150.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="NLOAD"/>
+            </iidm:busBreakerTopology>
+            <iidm:load id="LOAD" loadType="UNDEFINED" p0="600.0" q0="200.0" bus="NLOAD" connectableBus="NLOAD"/>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:line id="NHV1_NHV2_1" r="3.0" x="33.0" g1="0.0" b1="1.93E-4" g2="0.0" b2="1.93E-4" voltageLevelId1="VLHV1" bus1="NHV1" connectableBus1="NHV1" voltageLevelId2="VLHV2" bus2="NHV2" connectableBus2="NHV2"/>
+    <iidm:line id="NHV1_NHV2_2" r="3.0" x="33.0" g1="0.0" b1="1.93E-4" g2="0.0" b2="1.93E-4" voltageLevelId1="VLHV1" bus1="NHV1" connectableBus1="NHV1" voltageLevelId2="VLHV2" bus2="NHV2" connectableBus2="NHV2"/>
+    <iidm:extension id="NGEN_NHV1">
+        <ctc:cgmesTapChangers>
+            <ctc:tapChanger id="tc1" type="type1" controlId="control1"/>
+        </ctc:cgmesTapChangers>
+    </iidm:extension>
+    <iidm:extension id="NGEN_V2_NHV1">
+        <ctc:cgmesTapChangers>
+            <ctc:tapChanger id="tc2" combinedTapChangerId="ctc2" type="type2" hidden="true" step="1" controlId="control2"/>
+        </ctc:cgmesTapChangers>
+    </iidm:extension>
+</iidm:network>
diff --git a/cgmes/cgmes-extensions/src/test/resources/no_equipment_base_voltage_mapping.xml b/cgmes/cgmes-extensions/src/test/resources/no_equipment_base_voltage_mapping.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<iidm:network xmlns:iidm="http://www.powsybl.org/schema/iidm/1_13" xmlns:bv="http://www.powsybl.org/schema/iidm/ext/base_voltage_mapping/1_0" id="test" caseDate="2024-09-17T13:36:37.831Z" forecastDistance="0" sourceFormat="test" minimumValidationLevel="STEADY_STATE_HYPOTHESIS">
+    <iidm:substation id="sub" country="FR" tso="RTE">
+        <iidm:voltageLevel id="vl1" name="vl1" nominalV="440.0" lowVoltageLimit="200.0" highVoltageLimit="400.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="busA" name="busA"/>
+            </iidm:busBreakerTopology>
+        </iidm:voltageLevel>
+        <iidm:voltageLevel id="vl2" name="vl2" nominalV="200.0" lowVoltageLimit="200.0" highVoltageLimit="400.0" topologyKind="BUS_BREAKER">
+            <iidm:busBreakerTopology>
+                <iidm:bus id="busB" name="busB"/>
+            </iidm:busBreakerTopology>
+        </iidm:voltageLevel>
+    </iidm:substation>
+    <iidm:extension id="test">
+        <bv:baseVoltageMapping>
+            <bv:baseVoltage nominalVoltage="380.0" source="BOUNDARY" id="id_380"/>
+            <bv:baseVoltage nominalVoltage="400.0" source="IGM" id="id_400"/>
+        </bv:baseVoltageMapping>
+    </iidm:extension>
+</iidm:network>