RL section

Description of the RL Section component in Schematic Editor

Figure 1. RL Section component in the Schematic Editor core library
Figure 2. Schematic diagram of single phase RL section

RL Section is a simplified model of an overhead or underground transmission line without phase coupling considerations. RL section parameters can be defined in two ways. If the R-L model definition is selected, the cable length and the per length resistance and inductance must be defined. If the S-U model definition is chosen, the maximal complex power that is expected through the line, voltage, and frequency must be defined. The section resistance and inductance are then approximated by assuming a 10% voltage drop over the section impedance.

Ports

  • Px
    • RL section Px terminal
    • x is the phase number which depends on the Number of phases parameter
    • Number of ports depends on Number of phases parameter
  • Py
    • RL section Py terminal
    • y is the phase number which depends on the Number of phases parameter
    • Number of ports depends on Number of phases parameter

General (Tab)

  • Model definition
    • Component parameters definition type
    • Available properties are R-L and S-U
  • Unit system
    • Visible if Model definition is set to R-L
    • Specifies if metric or imperial unit system is used for parameter definition
    • Available properties are metric and imperial
  • Number of phases
    • Number of phases in the RL section component
    • Available values are 1, 2, 3, 4 or 5
  • Resistance per kilometer
    • Available if Model definition is set to R-L and Unit system is set to metric
    • Section resistance per kilometer [Ω/km]
  • Resistance per mile
    • Available if Model definition is set to R-L and Unit system is set to imperial
    • Section resistance per mile [Ω/mile]
  • Inductance per kilometer
    • Available if Model definition is set to R-L and Unit system is set to metric
    • Section inductance per kilometer [Ω/km]
  • Inductance per mile
    • Available if Model definition is set to R-L and Unit system is set to imperial
    • Section inductance per mile [Ω/mile]
  • Cable length
    • Available if Model definition is set to R-L
    • Length of the RL section
    • Property value can be in kilometers if Unit system is set to metric, or in miles if Unit system is set to imperial
  • Apparent power
    • Available if Model definition is set to S-U
    • Maximal apparent power of the RL section [kVA]
  • Voltage
    • Available if Model definition is set to S-U
    • Nominal voltage of the RL section [kV]
  • Frequency
    • Available if Model definition is set to S-U
    • Nominal frequency of the component [Hz]

Coupling (Tab)

  • TLM Embedded coupling type will be replaced with a corresponding inductor in TyphoonSim.
  • Embedded TLM coupling
    • Available if Number of phases is 2, 3, or 4
    • Enables or disables embedded TLM coupling
    • If enabled, RL section inductance will be split between TLM and component inductors
  • TLM/Embedded componenets ratio
    • Available if Number of phases is 2, 3, or 4
    • Specifies how the ratio between TLM and component inductance will be calculated
    • Available properties are Automatic and Manual
    • If set to Automatic, ratio will be determined by the discretization method
    • If set to Manual, ratio can be chosen manually
  • Ratio
    • Available if Number of phases is 2, 3, or 4 and TLM/Embedded componenets ratio is set to Manual
    • Ratio between TLM and RL section inductance