PSCAD Q&A
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enPSCAD Q&AFri, 18 Jun 2021 14:42:05 Zhttps://forum.hvdc.ca/3599548/Initialise-a-Variable-as-constant
https://forum.hvdc.ca/3599548/Initialise-a-Variable-as-constant
MarcialGonGeorgeWvariablesconstantsInitialise a Variable as constant<span style="color: #333333; font-family: 'Helvetica Neue', sans-serif; font-size: 14px;">Hello Everyone,<br /><br /></span>I wonder if it is possible to define a constant at the begining of the run. I'm trying to set a parameter which is Content=Constant.<br /><br />The value of this parameter is the result of a simple calculation which i would like to define at the initialization of the simulation. However, as the value is the result of a calculation, the program defines the content as variable, showing the following error:<br /><br />---> 'Tmva' is expecting a constant signal 'X'. The signal is defined as variable.<br /><br />Any information on how i can initialize correctly the system?<br /><br />Thank you all.Tue, 27 Apr 2021 10:40:13 Zhttps://forum.hvdc.ca/3599548/Initialise-a-Variable-as-constant#commentshttps://forum.hvdc.ca/1564059/How-to-calculate-R-L-and-C-parameters-of-a-DC-cable-TLine-from-Line-Constant-Program-output-matrix
https://forum.hvdc.ca/1564059/How-to-calculate-R-L-and-C-parameters-of-a-DC-cable-TLine-from-Line-Constant-Program-output-matrix
merajalamtransmissioncableHVDClineconstantsfaultdcHow to calculate R, L and C parameters of a DC cable/TLine from Line Constant Program output matrix?I want to calculate Resistance (ohm/km), Inductance(mH/km) and Capacitance(uF/km) of a DC cable from phase impedance matrix or sequence impedance matrix output of LCP at 1mHz. The cable has core, sheath and armor. The sheath and armor are properly grounded.<br /><br />The sequence impedance matrix output of this DC cable has nonzero off-diagonal elements which should not be as I have properly grounded sheath and armor. I need R, L and C values of this cable.<br /><br /><br />Mon, 16 Mar 2015 22:05:47 Zhttps://forum.hvdc.ca/1564059/How-to-calculate-R-L-and-C-parameters-of-a-DC-cable-TLine-from-Line-Constant-Program-output-matrix#commentshttps://forum.hvdc.ca/988246/Transmission-Line-Constants-Ref-Temperature
https://forum.hvdc.ca/988246/Transmission-Line-Constants-Ref-Temperature
deangowardtransmissionlineconstantsTransmission Line Constants (Ref Temperature?)What is the reference temperature for the impedance values shown in the transmission line constants output file? I presume it's the same temperature that the DC Resistance parameter (supplied by end user) is based on, however, please advise / confirm.<br /><br /> Is there anyway to adjust the result in PSCAD to reflect a standard temperature, such as 75 deg C? I only have DC Resistance at 20 degC but I need line constants to be based on 75degC operating temp.Wed, 23 Jul 2014 17:54:15 Zhttps://forum.hvdc.ca/988246/Transmission-Line-Constants-Ref-Temperature#comments