B is susceptance, not capacitance. First change p.u. susceptance to p.u. capacitance, then multiply by z_base.
Ray > On Feb 4, 2015, at 7:54 PM, Vladimir Frolov <[email protected]> > wrote: > > Ok, and how to calculate actual line capacitance then. > > just take b value from the table and multiply by z_base for the given line? > > Thanks! > > On Mon, Jan 5, 2015 at 6:01 PM, Ray Zimmerman <[email protected] > <mailto:[email protected]>> wrote: > The branch model is as shown in Figure 3-1 in the User’s Manual > <http://www.pserc.cornell.edu/matpower/manual.pdf>, so it is the voltage at > the “TO” bus that is relevant for the pi-model parameters. > > Ray > > >> On Jan 4, 2015, at 8:46 PM, Vladimir Frolov <[email protected] >> <mailto:[email protected]>> wrote: >> >> Hi all! >> >> am I right that line parameters which are given in various cases are in PU. >> >> and in order to recalculate them to resistance I firstly should find >> z_base=V_base^2/baseMVA. >> >> and then: >> >> r=r_pu*z_base, >> >> for example. >> >> what if I have different base voltage at the ends of the line? >> >> Best, >> Vladimir >> > >
