Macros > Macro commands and parameters > Macro calculating commands

Purpose:

Calculation of the Selectivity of the protection of a node, in a cable or a line or in an element.

If the calculation is called for one node, for that node the selectivity is calculated. The transformer tap changers are in this calculation not adapted to the loadflow situation.

General notation:

Selectivity ( Node( NodeName ) , FaultType )

Selectivity ( Cable( CableName ), FaultType )

Selectivity ( Line( LineName ) , FaultType )

Selectivity ( NIL, )

For FaultType a textvalue or a textvariable indicates the type of fault. The possible values are:

'abc'

: symmetrical short circuit

'abc0'

: symmetrical short circuit to ground

'a0'	: single phase short circuit to ground

'b0'	: single phase short circuit to ground

'c0'	: single phase short circuit to ground

'ab'	: two phase short circuit

'ac'	: two phase short circuit

'bc'	: two phase short circuit

'ab0'

: two phase short circuit to ground

'ac0'

: two phase short circuit to ground

'bc0'

: two phase short circuit to ground

After a successful execution the standard objects Network.Result and Object.Result will be equal to 'SEL', otherwise 'NO'.

Example:

Calculation of the selectivity for a symmetrical fault:

Fault ( Node ('MyNode') , , 'abc' , 0, 0 )

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