STURB – Steam turbine model

Block SymbolLicensing group: MODEL

Function Description
The function block description is not yet available. Below you can find partial description of the inputs, outputs and parameters of the block. Complete documentation will be available in future revisions.

This block does not propagate the signal quality. More information can be found in the 1.4 section.

Input

uMS	Main valve requested position [0..1]	Double (F64)
uRS	Reheater valve requested position [0..1]	Double (F64)
f	Mains frequency [Hz]	Double (F64)
Mload	Shaft torque [Nm]	Double (F64)
MODE	1=mains mode, 0=island mode	Bool
R1	Model reset	Bool

Parameter

Kms	Main valve time constant [1/s] $⊙$ 1.0	Double (F64)
Khp	High-pressure turbine part time constant [1/s] $⊙$ 1.0	Double (F64)
Krs	Reheater valve time constant [1/s] $⊙$ 1.0	Double (F64)
Krh	Reheater time constant [1/s] $⊙$ 1.0	Double (F64)
Kip	Intermediate-pressure turbine part time constant [1/s] $⊙$ 1.0	Double (F64)
Klp	Low-pressure turbine part time constant [1/s] $⊙$ 1.0	Double (F64)
p	Input steam pressure [bar] $⊙$ 1.0	Double (F64)
J	Mass interia [kg.m $^{2}$ ] $⊙$ 1.0	Double (F64)
dhhp	High-pressure turbine part enthalpy difference [J/kg] $⊙$ 1.0	Double (F64)
dhip	Intermediate-pressure turbine part enthalpy difference [J/kg] $⊙$ 1.0	Double (F64)
dhlp	Low-pressure turbine part enthalpy difference [J/kg] $⊙$ 1.0	Double (F64)
B	Friction constant [Nm.s/rad] $⊙$ 1.0	Double (F64)
Mfmax	Maximum shaft torque [Nm] $⊙$ 1.0	Double (F64)
K1	Load model constant [Nm] $⊙$ 1.0	Double (F64)
K2	Load model constant [Nm.s] $⊙$ 1.0	Double (F64)
Pmin	Limit (minimal) power [W] $⊙$ 1.0	Double (F64)
hMS_0	Main valve position initial value [0..1] $⊙$ 1.0	Double (F64)
xHP_0	High-pressure part steam flow initial value [kg/s] $⊙$ 1.0	Double (F64)
hRS_0	Reheater valve position initial value [0..1] $⊙$ 1.0	Double (F64)
xRH_0	Reheater steam flow initial value [kg/s] $⊙$ 1.0	Double (F64)
xIP_0	Intermediate-pressure part steam flow initial value [kg/s] $⊙$ 1.0	Double (F64)
xLP_0	Low-pressure part steam flow initial value [kg/s] $⊙$ 1.0	Double (F64)
e_0	Slip angle initial value [rad] $⊙$ 1.0	Double (F64)
n_0	Shaft rotation frequency initial value [Hz] $⊙$ 1.0	Double (F64)

Output

Pgen	Output shaft power [W]	Double (F64)
xLP	Output steam flow [kg/s]	Double (F64)
rpm	Rotation per minute	Double (F64)
E	Error indicator	Bool

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