Class ExcitationSystemDynamics.ExcIEEEST7B

Class [owl:Class]
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.
ExcIEEEST7B.kl max 1 Domain.PU
ExcIEEEST7B.vrmin max 1 Domain.PU max 1 Domain.Seconds max 1 Domain.PU max 1 Domain.Seconds
ExcIEEEST7B.oelin max 1 ExcST7BOELselectorKind
ExcIEEEST7B.vmax max 1 Domain.PU
ExcIEEEST7B.uelin max 1 ExcST7BUELselectorKind
ExcIEEEST7B.kpa max 1 Domain.PU
ExcIEEEST7B.tia max 1 Domain.Seconds
ExcIEEEST7B.vrmax max 1 Domain.PU
ExcIEEEST7B.tb max 1 Domain.Seconds
ExcIEEEST7B.vmin max 1 Domain.PU max 1 Domain.Seconds max 1 Domain.PU

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