GovHydroDD : Documentation diagram
Created: 04/04/2012 11:31:46 AM
Modified: 04/13/2012 08:35:12 AM
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<b>Parameter Notes:</b><br /></p><p><ol><li><b>Td</b>, <b>Tp</b>, <b>Tt</b>, and <b>Tturb</b> may be zero to bypass the corresponding transfer function blocks. If <b>Tf</b> is input as zero, but <b>K1</b> or <b>K2</b> is not zero, <b>Tf</b> is set to a small value (4 times integration time step). If <b>Bturb</b>*<b>Tturb</b> is less than 4 times integration time step, <b>Tturb</b> is set to zero to bypass the block. If <b>Tt</b> is input as zero, feedback from <b>CV</b> instead of <b>Pe</b> is used.</li><br /></p><p><li>The nonlinear gain between gate position and power may be input with up to 6 points. The (0.,0.) and (1.,1.) points are assumed and need not be input. The output is not allowed to go beyond 0. and 1. However, if <b>Pmax</b> > 1., the input and output are scaled by <b>Pmax</b>. If <b>Gv1</b> is input as a negative number, the default hydro curve  will be used. If input is omitted or if all zero values are input, a straight line is used.</li><br /></p><p><li>For a hydro turbine, set <b>Tturb</b> = <b>Tw</b> (water starting time), set <b>Aturb</b> = -1. and <b>Bturb</b> = 0.5. For a diesel engine or two-shaft gas turbine, set <b>Aturb</b> = 0.8 and <b>Bturb</b> = 1.0 and <b>Tturb</b> = 1 second. For a small steam turbine with a non-reheat steam supply or a single- shaft gas turbine, set <b>Aturb</b> = 0. and <b>Bturb</b> = 1.0 and <b>Tturb</b> = 0.2 second.</li><br /></p><p></ol><br /></p>