CIM14/IEC61970/Wires/ImpedanceVariationCurve.py

   1 # Copyright (C) 2010-2011 Richard Lincoln
   2 #
   3 # Permission is hereby granted, free of charge, to any person obtaining a copy
   4 # of this software and associated documentation files (the "Software"), to
   5 # deal in the Software without restriction, including without limitation the
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   7 # sell copies of the Software, and to permit persons to whom the Software is
   8 # furnished to do so, subject to the following conditions:
   9 #
  10 # The above copyright notice and this permission notice shall be included in
  11 # all copies or substantial portions of the Software.
  12 #
  13 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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  18 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  19 # IN THE SOFTWARE.
  20
  21 from CIM14.IEC61970.Core.Curve import Curve
  22
  23 class ImpedanceVariationCurve(Curve):
  24     """An Impedance Variation Curve describes the change in Transformer Winding impedance values in relationship to tap step changes.  The tap step is represented using the xValue, resistance using y1value, reactance using y2value, and magnetizing susceptance using y3value.  The resistance (r), reactance (x), and magnetizing susceptance (b) of the associated TransformerWinding define the impedance when the tap is at neutral step.  The curve values represent the change to the impedance from the neutral step values.  The impedance at a non-neutral step is calculated by adding the neutral step impedance (from the TransformerWinding) to the delta value from the curve.
  25     """
  26
  27     def __init__(self, TapChanger=None, *args, **kw_args):
  28         """Initialises a new 'ImpedanceVariationCurve' instance.
  29
  30         @param TapChanger: An ImpedanceVariationCurve is defines impedance changes for a TapChanger.
  31         """
  32         self._TapChanger = None
  33         self.TapChanger = TapChanger
  34
  35         super(ImpedanceVariationCurve, self).__init__(*args, **kw_args)
  36
  37     _attrs = []
  38     _attr_types = {}
  39     _defaults = {}
  40     _enums = {}
  41     _refs = ["TapChanger"]
  42     _many_refs = []
  43
  44     def getTapChanger(self):
  45         """An ImpedanceVariationCurve is defines impedance changes for a TapChanger.
  46         """
  47         return self._TapChanger
  48
  49     def setTapChanger(self, value):
  50         if self._TapChanger is not None:
  51             self._TapChanger._ImpedanceVariationCurve = None
  52
  53         self._TapChanger = value
  54         if self._TapChanger is not None:
  55             self._TapChanger.ImpedanceVariationCurve = None
  56             self._TapChanger._ImpedanceVariationCurve = self
  57
  58     TapChanger = property(getTapChanger, setTapChanger)
  59