CIM14/Dynamics/TurbineGovernors/GovSteam0.py

   1 # Copyright (C) 2010 Richard Lincoln
   2 #
   3 # This library is free software; you can redistribute it and/or
   4 # modify it under the terms of the GNU Lesser General Public
   5 # License as published by the Free Software Foundation; either
   6 # version 2.1 of the License, or (at your option) any later version.
   7 #
   8 # This library is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11 # Lesser General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU Lesser General Public
  14 # License along with this library; if not, write to the Free Software
  15 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA, USA
  16
  17 from CIM14.Dynamics.TurbineGovernors.TurbineGovernor import TurbineGovernor
  18
  19 class GovSteam0(TurbineGovernor):
  20     """A simplified steam turbine-governor model.
  21     """
  22
  23     def __init__(self, t2=0.0, t1=0.0, vmin=0.0, dt=0.0, vmax=0.0, mwbase=0.0, r=0.0, t3=0.0, *args, **kw_args):
  24         """Initialises a new 'GovSteam0' instance.
  25
  26         @param t2: Numerator time constant of T2/T3 block
  27         @param t1: Steam bowl time constant
  28         @param vmin: Minimum valve position, p.u. of mwcap
  29         @param dt: Turbine damping coefficient
  30         @param vmax: Maximum valve position, p.u. of mwcap
  31         @param mwbase: Base for power values  (&gt; 0.)
  32         @param r: Permanent droop
  33         @param t3: Reheater time constant
  34         """
  35         #: Numerator time constant of T2/T3 block
  36         self.t2 = t2
  37
  38         #: Steam bowl time constant
  39         self.t1 = t1
  40
  41         #: Minimum valve position, p.u. of mwcap
  42         self.vmin = vmin
  43
  44         #: Turbine damping coefficient
  45         self.dt = dt
  46
  47         #: Maximum valve position, p.u. of mwcap
  48         self.vmax = vmax
  49
  50         #: Base for power values  (&gt; 0.)
  51         self.mwbase = mwbase
  52
  53         #: Permanent droop
  54         self.r = r
  55
  56         #: Reheater time constant
  57         self.t3 = t3
  58
  59         super(GovSteam0, self).__init__(*args, **kw_args)
  60
  61     _attrs = ["t2", "t1", "vmin", "dt", "vmax", "mwbase", "r", "t3"]
  62     _attr_types = {"t2": float, "t1": float, "vmin": float, "dt": float, "vmax": float, "mwbase": float, "r": float, "t3": float}
  63     _defaults = {"t2": 0.0, "t1": 0.0, "vmin": 0.0, "dt": 0.0, "vmax": 0.0, "mwbase": 0.0, "r": 0.0, "t3": 0.0}
  64     _enums = {}
  65     _refs = []
  66     _many_refs = []
  67