com.interpss.core.algo.impl.solver

Class ZbrNrSolver

java.lang.Object

org.eclipse.emf.common.notify.impl.BasicNotifierImpl

org.eclipse.emf.ecore.impl.BasicEObjectImpl

org.eclipse.emf.ecore.impl.EObjectImpl

com.interpss.core.algo.impl.solver.DefaultNrSolver

com.interpss.core.algo.impl.solver.ZbrNrSolver

All Implemented Interfaces:

INrSolver, org.eclipse.emf.common.notify.Notifier, org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.InternalEObject

public class ZbrNrSolver
extends DefaultNrSolver

This class implements the NR loadflow algorithm for solving the power flow with zero impedance branches (Zbr). It is based on the paper "On the Modelling of Zero Impedance Branches for Power Flow Analysis" by F. Milano in TPWRS, 2016 Two boundary conditions are used to model the ZBR lines to avoid the singularity of the Jacobian matrix: (1) pij = p, pji = -p, qij = q, qji = -q (2) 0 =theta_ij = theta_i - theta_j -dp*pij, 0 = vij = v_i - v_j -dq*qij

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.emf.ecore.impl.BasicEObjectImpl

org.eclipse.emf.ecore.impl.BasicEObjectImpl.EPropertiesHolder, org.eclipse.emf.ecore.impl.BasicEObjectImpl.EPropertiesHolderBaseImpl, org.eclipse.emf.ecore.impl.BasicEObjectImpl.EPropertiesHolderImpl

Nested classes/interfaces inherited from class org.eclipse.emf.common.notify.impl.BasicNotifierImpl

org.eclipse.emf.common.notify.impl.BasicNotifierImpl.EAdapterList<E extends java.lang.Object & org.eclipse.emf.common.notify.Adapter>, org.eclipse.emf.common.notify.impl.BasicNotifierImpl.EObservableAdapterList, org.eclipse.emf.common.notify.impl.BasicNotifierImpl.EScannableAdapterList

Nested classes/interfaces inherited from interface org.eclipse.emf.ecore.InternalEObject

org.eclipse.emf.ecore.InternalEObject.EStore

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ZBR_ALGO_RESULTS
protected java.util.List<AclfBranch>	zbrBranchList

Fields inherited from class com.interpss.core.algo.impl.solver.DefaultNrSolver

aclfNet

Fields inherited from class org.eclipse.emf.ecore.impl.EObjectImpl

eAdapters, eContainer, eContainerFeatureID, EDELIVER, EDYNAMIC_CLASS, eFlags, ELAST_EOBJECT_FLAG, ELAST_NOTIFIER_FLAG, eProperties, EPROXY

Fields inherited from class org.eclipse.emf.ecore.impl.BasicEObjectImpl

EVIRTUAL_GET, EVIRTUAL_IS_SET, EVIRTUAL_NO_VALUE, EVIRTUAL_SET, EVIRTUAL_UNSET

Fields inherited from interface com.interpss.core.algo.INrSolver

MinScaleFactor, StopAtNoSolutionFound

Fields inherited from interface org.eclipse.emf.ecore.InternalEObject

EOPPOSITE_FEATURE_BASE

Constructor Summary

Constructors

Constructor and Description
ZbrNrSolver() default constructor
ZbrNrSolver(BaseAclfNetwork<?,?> aclfNet) constructor

Method Summary

Modifier and Type	Method and Description
ISparseEqnMatrix2x2	formJMatrix() form J-matrix.
void	setPowerMismatch(ISparseEqnMatrix2x2 lfEqn) set the power mismatch to the right-hand side of the eqn [A][x] = [B] set AclfNet object bus mismatch to the [B] vector of the Sparse Eqn
void	updateBusVoltage(ISparseEqnMatrix2x2 lfEqn, double scaleFactor) After solving the eqn [A][x] = [B], [x] is stored in [B].
boolean	updateBusVoltageNonDivergent(ISparseEqnMatrix2x2 lfEqn, double tolerance) After solving the eqn [A][x] = [B], [x] is stored in [B].

Methods inherited from class com.interpss.core.algo.impl.solver.DefaultNrSolver

setAclfNet, updateBusVoltage

Methods inherited from class org.eclipse.emf.ecore.impl.EObjectImpl

eAdapters, eBasicAdapters, eBasicProperties, eBasicSetContainer, eClass, eContainerFeatureID, eDeliver, eInternalContainer, eInvoke, eIsProxy, eProperties, eSetClass, eSetDeliver, eSetProxyURI, eStaticClass

Methods inherited from class org.eclipse.emf.ecore.impl.BasicEObjectImpl

eAddVirtualValue, eAllContents, eBaseStructuralFeatureID, eBasicRemoveFromContainer, eBasicRemoveFromContainerFeature, eBasicSetContainer, eComputeVirtualValuesCapacity, eContainer, eContainerAdapterArray, eContainingFeature, eContainmentFeature, eContainmentFeature, eContains, eContents, eCrossReferences, eDerivedOperationID, eDerivedOperationID, eDerivedStructuralFeatureID, eDerivedStructuralFeatureID, eDirectResource, eDynamicBasicRemoveFromContainer, eDynamicClass, eDynamicFeature, eDynamicFeatureID, eDynamicGet, eDynamicGet, eDynamicGet, eDynamicInverseAdd, eDynamicInverseAdd, eDynamicInverseRemove, eDynamicInverseRemove, eDynamicInvoke, eDynamicInvoke, eDynamicIsSet, eDynamicIsSet, eDynamicIsSet, eDynamicSet, eDynamicSet, eDynamicSet, eDynamicUnset, eDynamicUnset, eDynamicUnset, eGet, eGet, eGet, eGet, eHasSettings, eInternalResource, eInverseAdd, eInverseAdd, eInverseRemove, eInverseRemove, eInvocationDelegate, eInvoke, eIsSet, eIsSet, eObjectForURIFragmentSegment, eOpenGet, eOpenIsSet, eOpenSet, eOpenUnset, eProxyURI, eRemoveVirtualValue, eResolveProxy, eResource, eSet, eSet, eSetDirectResource, eSetResource, eSetStore, eSetting, eSettingDelegate, eSettings, eSetVirtualIndexBits, eSetVirtualValue, eSetVirtualValues, eStaticFeatureCount, eStaticOperationCount, eStore, eUnset, eUnset, eURIFragmentSegment, eVirtualBitCount, eVirtualGet, eVirtualGet, eVirtualIndex, eVirtualIndexBits, eVirtualIsSet, eVirtualSet, eVirtualUnset, eVirtualValue, eVirtualValues, toString

Methods inherited from class org.eclipse.emf.common.notify.impl.BasicNotifierImpl

eBasicAdapterArray, eBasicHasAdapters, eNotificationRequired, eNotify

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.emf.ecore.EObject

eAllContents, eClass, eContainer, eContainingFeature, eContainmentFeature, eContents, eCrossReferences, eGet, eGet, eInvoke, eIsProxy, eIsSet, eResource, eSet, eUnset

Methods inherited from interface org.eclipse.emf.common.notify.Notifier

eAdapters, eDeliver, eNotify, eSetDeliver

Methods inherited from interface org.eclipse.emf.ecore.InternalEObject

eNotificationRequired

Field Detail

ZBR_ALGO_RESULTS

public static final java.lang.String ZBR_ALGO_RESULTS

See Also:

Constant Field Values

zbrBranchList

protected java.util.List<AclfBranch> zbrBranchList

Constructor Detail

ZbrNrSolver

public ZbrNrSolver()

default constructor

ZbrNrSolver

public ZbrNrSolver(BaseAclfNetwork<?,?> aclfNet)

constructor

Parameters:

aclfNet -

Method Detail

formJMatrix

public ISparseEqnMatrix2x2 formJMatrix()

Description copied from interface: INrSolver

form J-matrix. This method is called to create [A] of eqn [A][x] = [B] form J-matrix for NR solver

Specified by:

formJMatrix in interface INrSolver

Overrides:

formJMatrix in class DefaultNrSolver

setPowerMismatch

public void setPowerMismatch(ISparseEqnMatrix2x2 lfEqn)

Description copied from interface: INrSolver

set the power mismatch to the right-hand side of the eqn [A][x] = [B] set AclfNet object bus mismatch to the [B] vector of the Sparse Eqn

Specified by:

setPowerMismatch in interface INrSolver

Overrides:

setPowerMismatch in class DefaultNrSolver

Parameters:

lfEqn - sparse equation

updateBusVoltage

public void updateBusVoltage(ISparseEqnMatrix2x2 lfEqn,
                             double scaleFactor)

Description copied from interface: INrSolver

After solving the eqn [A][x] = [B], [x] is stored in [B]. Use [x] to update the AclfNetwork object update AclfNet object bus voltage using the info stored in the [B] vector of the Sparse Eqn at the end of an iteraction step. The scale factor is used for non-divergence Loadflow implementation.

Specified by:

updateBusVoltage in interface INrSolver

Overrides:

updateBusVoltage in class DefaultNrSolver

Parameters:

lfEqn - sparse equation

scaleFactor - scale factor

updateBusVoltageNonDivergent

public boolean updateBusVoltageNonDivergent(ISparseEqnMatrix2x2 lfEqn,
                                            double tolerance)

Description copied from interface: INrSolver

After solving the eqn [A][x] = [B], [x] is stored in [B]. Use [x] to update the AclfNetwork object. This method is for non-divergent LF implementation. It search along the [x] to find a point where mismatch is min update AclfNet object bus voltage using the info stored in the [B] vector of the Sparse Eqn and the non-divergence method at the end of an iteraction step.

Specified by:

updateBusVoltageNonDivergent in interface INrSolver

Overrides:

updateBusVoltageNonDivergent in class DefaultNrSolver

Parameters:

lfEqn - sparse equation

tolerance - tolerance