CIM Issues #6282
Update of the 302 and 457 inconsistencies and gaps
61970-302, 61970-457
Description
Interoperability testing found the following inconsistencies and gaps and proposed these to be fixed asap. The fixes are applied in Ed2 of the standards as they will be voted again due to the copiright changes.
Classes that have attributes as strings, but should be multiple attributes
TurbCIGREHRSGST: pgtqg, pred
TurbIEEEGenericHRSGST: pgtqg, pred
TurbIEEEHydroWCNonlinear: gpm
GovSteamFV4: the block diagram indicates the presence of a deadband in the speed error power reference correction, but no attribute to the purpose is listed
ExcIEEEAC8B: a parameter “Kp” is shown in IEEE specs and missing from attributes list
ExcIEEEST6B: the signal “VB” in IEEE specs is a voltage dependent function (likely analogous to the “KpVt” of IEEEAC8B). Missing from attributes list.
OverexcLimIEEEOEL2C, OverexcLimIEEEOEL3C, OverexcLimIEEEOEL5C: IEEE specs indicate an input selector. Such selector is not in the attributes list.
Proposed Solution
GovCIGREGT and GovIEEEGT1
change type and descroption of attribute fx - boolean
add a1 to a5 attributes, temperature and initialTemperature, pmax
For TurbCIGREHRSGST and TurbIEEEGenericHRSGST: add 6 points pgt and qg. Attribute pdtqg is deleted
add 6 pairs (f1-f6, y1-y6) to represent the output of the block over frequency/under frequency control
delete pred attribute
TurbIEEEHydroWCNonLinear
deleted attribute gpm
added 6 pairs of attributes g1-g6, pm1-pm6
ExcIEEEAC8B
added the statement "However this model is not supporting this, hence the model AC8C from IEEE 421.5-2016, 7.17 (ExcIEEEAC8C) should be used."
ExcIEEEST6B
added the statement "This model is not supporting Vb signal in a correct way, hence the model ST6C from IEEE 421.5-2016, 8.13 (ExcIEEEST6C) should be used."
OverexcLimIEEEOEL2C, OverexcLimIEEEOEL3C, OverexcLimIEEEOEL5C
added attribute inputSignalKind and enumeration OverExcitationLimiterInputKind
GovSteamFV4
Update the diagram of GovSteamFV4 to include parameter Sf1
add the foollowing note to the diagram
"The characteristic using Kf1, Sf1 and alpha has the following details:
Ecf = 1 – Omega
If abs(Ecf) < Sf1 :
Cpfc = 0
else:
Cpfc = Kf1 * (abs(Ecf) – Sf1)
If Cpfc > Lps
Cpfc = Lps
If Cpfc < Lpi
Cpfc = Lpi
where Kf1 is the slope of the characteristic; Alpha is the angle of the slope used only for diagram explanation and the deadband is Sf1."
added attribute sf1
Release Notes
All changes below are applied in 61970-302 and 61970-457
GovCIGREGT and GovIEEEGT1
change type and descroption of attribute fx - boolean
add a1 to a5 attributes, temperature and initialTemperature, pmax
For TurbCIGREHRSGST and TurbIEEEGenericHRSGST: add 6 points pgt and qg. Attribute pdtqg is deleted
add 6 pairs (f1-f6, y1-y6) to represent the output of the block over frequency/under frequency control
delete pred attribute
TurbIEEEHydroWCNonLinear
deleted attribute gpm
added 6 pairs of attributes g1-g6, pm1-pm6
ExcIEEEAC8B
added the statement "However this model is not supporting this, hence the model AC8C from IEEE 421.5-2016, 7.17 (ExcIEEEAC8C) should be used."
ExcIEEEST6B
added the statement "This model is not supporting Vb signal in a correct way, hence the model ST6C from IEEE 421.5-2016, 8.13 (ExcIEEEST6C) should be used."
OverexcLimIEEEOEL2C, OverexcLimIEEEOEL3C, OverexcLimIEEEOEL5C
added attribute inputSignalKind and enumeration OverExcitationLimiterInputKind
GovSteamFV4
Update the diagram of GovSteamFV4 to include parameter Sf1
add the foollowing note to the diagram
"The characteristic using Kf1, Sf1 and alpha has the following details:
Ecf = 1 – Omega
If abs(Ecf) < Sf1 :
Cpfc = 0
else:
Cpfc = Kf1 * (abs(Ecf) – Sf1)
If Cpfc > Lps
Cpfc = Lps
If Cpfc < Lpi
Cpfc = Lpi
where Kf1 is the slope of the characteristic; Alpha is the angle of the slope used only for diagram explanation and the deadband is Sf1."
added attribute sf1