com.interpss.dist.algo.path

Class DistPathBusWalker

java.lang.Object

com.interpss.dist.algo.path.DistPathBusWalker

All Implemented Interfaces:

IBusBVisitor

Direct Known Subclasses:

DistPathBusLfSolver

public class DistPathBusWalker
extends java.lang.Object
implements IBusBVisitor

Bus based network walk-through for determining power flow direction. Branch.infFlag is set during the process if power flow direction same as branch connection direction (from->to), intFlag = 1 Not same intFlag = 0 Branch weight is set to branch power flow (pu), only real power part, only for determining branch flow direction purpose, without considering branch loss. Branch weight is always positive. branch.intFlag is used to determine the active power flow direction. It is assumed that branch loss is not going to change branch active power flow direction

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<java.lang.String>	statusInfo

Fields inherited from interface com.interpss.core.common.visitor.IBusBVisitor

copyright

Constructor Summary

Constructors

Constructor and Description
DistPathBusWalker()
DistPathBusWalker(java.util.List<java.lang.String> info)

Method Summary

Modifier and Type	Method and Description
protected org.apache.commons.math3.complex.Complex	getBranchPowerFlow(Branch branch, Bus bus) out-going direction regarding the bus as positive direction.
protected org.apache.commons.math3.complex.Complex	getP(Bus b, double baseKva) get bus power, generation as positive direction
protected org.apache.commons.math3.complex.Complex	getVisitedBranchTotalWeight(Bus bus) out-going direction regarding the bus as positive direction.
boolean	visit(Bus bus) visit the bus and connected branches, return false if the walk of the bus is not done
protected void	visitBranch(Branch branch, Bus bus) Visit the branch to calculate branch active power flow.
protected void	visitBus(Bus bus) visit the bus and connected branch if necessary for determining branch power flow direction.
protected void	visitUtilityBus(Bus bus) visit the utility bus, all branches connected should be visited before the utility bus can be visited

Methods inherited from class java.lang.Object

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

Field Detail

statusInfo

protected java.util.List<java.lang.String> statusInfo

Constructor Detail

DistPathBusWalker

public DistPathBusWalker()

DistPathBusWalker

public DistPathBusWalker(java.util.List<java.lang.String> info)

Method Detail

visit

public boolean visit(Bus bus)

visit the bus and connected branches, return false if the walk of the bus is not done

Specified by:

visit in interface IBusBVisitor

visitBus

protected void visitBus(Bus bus)

visit the bus and connected branch if necessary for determining branch power flow direction. pre-condition : the bus has only one un-visited branch

Parameters:

bus -

visitBranch

protected void visitBranch(Branch branch,
                           Bus bus)

Visit the branch to calculate branch active power flow. Store the active power to branch.weight. for determining branch flow direction, therefore, only real power is stored as branch weight

Parameters:

branch -

bus -

visitUtilityBus

protected void visitUtilityBus(Bus bus)

visit the utility bus, all branches connected should be visited before the utility bus can be visited

Parameters:

bus -

getP

protected org.apache.commons.math3.complex.Complex getP(Bus b,
                                                        double baseKva)

get bus power, generation as positive direction

Parameters:

net -

baseKva -

Returns:

getVisitedBranchTotalWeight

protected org.apache.commons.math3.complex.Complex getVisitedBranchTotalWeight(Bus bus)

out-going direction regarding the bus as positive direction. The following is an example: | f -- w1 -- t f -- w2 -- t | w = w1 - w2

Parameters:

bus -

Returns:

getBranchPowerFlow

protected org.apache.commons.math3.complex.Complex getBranchPowerFlow(Branch branch,
                                                                      Bus bus)

out-going direction regarding the bus as positive direction. for determining branch flow direction, therefore branch loss is ignored

Parameters:

branch -

bus -

Returns: