GovSteamFV3

Class Description

Simplified GovSteamIEEE1 steam turbine governor with Prmax limit and fast valving.

Attributes

Name Type Description
gv1 PU Nonlinear gain valve position point 1 (GV1). Typical value = 0.
gv2 PU Nonlinear gain valve position point 2 (GV2). Typical value = 0,4.
gv3 PU Nonlinear gain valve position point 3 (GV3). Typical value = 0,5.
gv4 PU Nonlinear gain valve position point 4 (GV4). Typical value = 0,6.
gv5 PU Nonlinear gain valve position point 5 (GV5). Typical value = 1.
gv6 PU Nonlinear gain valve position point 6 (GV6). Typical value = 0.
k PU Governor gain, (reciprocal of droop) (K). Typical value = 20.
k1 PU Fraction of turbine power developed after first boiler pass (K1). Typical value = 0,2.
k2 PU Fraction of turbine power developed after second boiler pass (K2). Typical value = 0,2.
k3 PU Fraction of hp turbine power developed after crossover or third boiler pass (K3). Typical value = 0,6.
mwbase ActivePower Base for power values (MWbase) (> 0). Unit = MW.
pgv1 PU Nonlinear gain power value point 1 (Pgv1). Typical value = 0.
pgv2 PU Nonlinear gain power value point 2 (Pgv2). Typical value = 0,75.
pgv3 PU Nonlinear gain power value point 3 (Pgv3). Typical value = 0,91.
pgv4 PU Nonlinear gain power value point 4 (Pgv4). Typical value = 0,98.
pgv5 PU Nonlinear gain power value point 5 (Pgv5). Typical value = 1.
pgv6 PU Nonlinear gain power value point 6 (Pgv6). Typical value = 0.
pmax PU Maximum valve opening, PU of MWbase (Pmax) (> GovSteamFV3.pmin). Typical value = 1.
pmin PU Minimum valve opening, PU of MWbase (Pmin) (< GovSteamFV3.pmax). Typical value = 0.
prmax PU Max. pressure in reheater (Prmax). Typical value = 1.
t1 Seconds Governor lead time constant (T1) (>= 0). Typical value = 0.
t2 Seconds Governor lag time constant (T2) (>= 0). Typical value = 0.
t3 Seconds Valve positioner time constant (T3) (> 0). Typical value = 0.
t4 Seconds Inlet piping/steam bowl time constant (T4) (>= 0). Typical value = 0,2.
t5 Seconds Time constant of second boiler pass (i.e. reheater) (T5) (> 0 if fast valving is used, otherwise >= 0). Typical value = 0,5.
t6 Seconds Time constant of crossover or third boiler pass (T6) (>= 0). Typical value = 10.
ta Seconds Time to close intercept valve (IV) (Ta) (>= 0). Typical value = 0,97.
tb Seconds Time until IV starts to reopen (Tb) (>= 0). Typical value = 0,98.
tc Seconds Time until IV is fully open (Tc) (>= 0). Typical value = 0,99.
uc Float Maximum valve closing velocity (Uc). Unit = PU / s. Typical value = -1.
uo Float Maximum valve opening velocity (Uo). Unit = PU / s. Typical value = 0,1.

Relationships

Inherits from

Descendant classes

  • No descendant classes

Leaf/Root class

IsLeaf IsRoot
False False

Associations

None