Library for relay protection simulation in Simulink

The article provides a library for modeling relay protection in a Simulink environment.

The library (ver. 1.1 of 21/02/2020) contains the following elements:

• Relay
  • Maximum and minimum relay
  • Impedance Relay (Mho)
  • Power direction relay
  • Biased Differential relay
• Time delay
  • Trip delay
  • Reset delay
  • Pulse delay
  • Inverse time delay
• Logical elements (AND, OR, NOT elements)
• Filters
  • Fourier filter
  • RMS Filter
  • Filter of Symmetrical Components
  • Filter of Emergency Components
  • Frequency Filter
• Additional blocks
  • Discretizer
  • RS flip-flop
  • Filter of Maximum / Minimum value
  • Oscilloscope
  • Screen

The library for modeling relay protection is given in the following file: relay_library.mdl

The library will be constantly updated, stay tuned.

If you have any suggestions or comments, then please indicate them in the comments or contact us.