Switched Shunt Model: SVCALS

Following checks and corrections are applied during Validation and AutoCorrection.

• If 0 < T3 < Mult*TimeStep then T3 = Mult*TimeStep
• If 0 < T6 < Mult*TimeStep then T6 = Mult*TimeStep
• If 0 < T7 < Mult*TimeStep then T7 = Mult*TimeStep
• If 0.0 < T2 < 0.5*Mult*TimeStep then T2 = 0, ElseIf 0.5*Mult*TimeStep < T2 < Mult*TimeStep then T2 = Mult*TimeStep
• If 0.0 < T2x < 0.5*Mult*TimeStep then T2x = 0, ElseIf 0.5*Mult*TimeStep < T2x < Mult*TimeStep then T2x = Mult*TimeStep

Mult represents the user-specified value Minimum time constant size as multiple of time step option on the Validation page of the Transient Stability Dialog

TimeStep represents the integration time step being used as described on TimeStep

Following treatment is handled during the transient numerical simulation

• If SlowB > Vrmax, then Vrmax = SlowB or if SlowB < Vrmin, then Vrmin = SlowB
• If Vref > Vefrmax, then Vrefmax = Vref or if Vref < Vrefmin, then Vrefmin = Vref
• If Qsvc > Qsvcmax, then Qsvcmax = Qsvc or if Qsvc < Qsvcmin, then Qsvcmin = Qsvc
• If Itcr > Itcrmax, then Itcrmax = Itcr or if Itcr < Itcrmin, then Itcrmin = Itcr
• If ItcrNum > -0.006, then ItcrNum = -0.006 or if ItcrNum < Qtcrmin, then ItcrNum = Qtcrmin
• If Alpha > Amax, then Amax = Alpha or if Alpha < Amin, then Amin = Alpha
• If Itcrorder > UL3, then UL3= Itcrorder or if Itcrorder < LL3, then LL3= Itcrorder
• If KIV > UL1, then UL1= KIV or if KIV < LL1, then LL1 = KIV