http://www.iec.ch/TC57/CIM#ExcIEEEST7B
Class cim:ExcIEEEST7B


type
Class [owl:Class]
comment
The class represents IEEE Std 421.5-2005 type ST7B model. This model is representative of static potential-source excitation systems. In this system, the AVR consists of a PI voltage regulator. A phase lead-lag filter in series allows introduction of a derivative function, typically used with brushless excitation systems. In that case, the regulator is of the PID type. In addition, the terminal voltage channel includes a phase lead-lag filter. The AVR includes the appropriate inputs on its reference for overexcitation limiter (OEL1), underexcitation limiter (UEL), stator current limiter (SCL), and current compensator (DROOP). All these limitations, when they work at voltage reference level, keep the PSS (VS signal from Type PSS1A, PSS2A, or PSS2B) in operation. However, the UEL limitation can also be transferred to the high value (HV) gate acting on the output signal. In addition, the output signal passes through a low value (LV) gate for a ceiling overexcitation limiter (OEL2). Reference: IEEE Standard 421.5-2005 Section 7.7.
subClassOf
cim:ExcitationSystemDynamics
equivalentClass
cim:ExcIEEEST7B.vmin max 1 cim:PU
cim:ExcIEEEST7B.vrmax max 1 cim:PU
cim:ExcIEEEST7B.tia max 1 cim:Seconds
cim:ExcIEEEST7B.kl max 1 cim:PU
cim:ExcIEEEST7B.uelin max 1 cim:ExcST7BUELselectorKind
cim:ExcIEEEST7B.kh max 1 cim:PU
cim:ExcIEEEST7B.tb max 1 cim:Seconds
cim:ExcIEEEST7B.oelin max 1 cim:ExcST7BOELselectorKind
cim:ExcIEEEST7B.kia max 1 cim:PU
cim:ExcIEEEST7B.vrmin max 1 cim:PU
cim:ExcIEEEST7B.kpa max 1 cim:PU
cim:ExcIEEEST7B.tf max 1 cim:Seconds
cim:ExcIEEEST7B.tc max 1 cim:Seconds
cim:ExcIEEEST7B.tg max 1 cim:Seconds
cim:ExcIEEEST7B.vmax max 1 cim:PU
References

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