STcPowerPlantControlDiagnostic

The STcPowerPlantControlDiagnostic structure offers internal signals of the TcPowerPlantControl as optional output process data. The underlying structures are listed below.

Name	Data type	Description
`Critical`	STcPowerPlantControlDiagStatus	Diagnostic status in a grid-critical situation (LFSM)
`Restart`	STcPowerPlantControlDiagStatus	Diagnostic values for restart sequence
`Reconnect`	STcPowerPlantControlDiagStatus	Diagnostic values for reconnect process
`Active`	STcPowerPlantControlDiagActive	Diagnostic data of the active power control
`Reactive`	STcPowerPlantControlDiagReactive	Diagnostic data of the reactive power control
`Measure`	STcPowerPlantControlDiagMeasure	Diagnostic data of the grid measurement

STcPowerPlantControlDiagStatus

Name	Data type	Description
`bVoltageLow`	BOOL	Undervoltage detected
`bVoltageHigh`	BOOL	Overvoltage detected
`bFrequencyLow`	BOOL	Underfrequency detected
`bFrequencyHigh`	BOOL	Overfrequency detected

STcPowerPlantControlDiagActive

Name	Data type	Unit	Description
`eMode`	ETcPowerPlantActiveMode		Active operation mode of the active power controller
`fActual`	REAL	%/pu	Measured active power
`fTarget`	REAL	%/pu	Active power setpoint
`fPredict`	REAL	%/pu	Predicted power based on section model
`fControl`	REAL	%/pu	Output signal of the PI controller
`fDemandByPrimary`	REAL	%/pu	Part via primary control
`fDemandByFrequency`	REAL	%/pu	Part via frequency-dependent control P(f)
`fDemandByVoltage`	REAL	%/pu	Part due to voltage-dependent active power reduction

STcPowerPlantControlDiagReactive

Name	Data type	Unit	Description
`eMode`	ETcPowerPlantReactiveMode		Active mode of the reactive power controller
`fActual`	REAL	%/pu	Measured reactive power
`fTarget`	REAL	%/pu	Reactive power setpoint
`fPredict`	REAL	%/pu	Prediction based on model
`fControl`	REAL	%/pu	PI controller output
`fDemandByCosPhi`	REAL	%/pu	Setpoint via CosPhi control (ByCosPhi)
`fDemandByVoltage`	REAL	%/pu	Setpoint via voltage characteristic curve Q(U)
`fDemandByVoltageLim`	REAL	%/pu	Setpoint via Q(Ulim) limitation
`fDemandByActive`	REAL	%/pu	Setpoint via active power characteristic curve Q(P)
`fDemandByActive CosPhi`	REAL	%/pu	Setpoint via CosPhi(P) characteristic curve

STcPowerPlantControlDiagMeasure

Name	Data type	Unit	Description
`fVoltage`	REAL	V	RMS value of the voltage (3-phase symmetrical)
`fVoltage12`	REAL	V	Voltage phase L1–L2
`fVoltage23`	REAL	V	Voltage phase L2–L3
`fVoltage31`	REAL	V	Voltage phase L3–L1
`fActivePower`	REAL	W	Measured active power at the PCC
`fReactivePower`	REAL	var	Measured reactive power at the PCC
`fFrequency`	REAL	Hz	Grid frequency