Ynni Consulting conducts short-circuit current calculations taking into account the entire network model and considering its operating modes and the contribution of various sources (Grid, Generators and motors). The fault currents are calculated at different locations in a power supply system for symmetrical short circuit, line-line, line-ground, and two lines-ground faults. The voltage at each bus during the fault can be calculated, using IEC or ANSI standards.

Objectives

  • Size the equipment

  • Check equipment thermal and electro-dynamic withstand capabilities

  • Specify ratings for fault current limiting devices

  • Reduce the risk of damage

  • Optimizing the detection of faults

  • Choose settings for protection relays

In case of excess short circuit capacity, remedial actions shall be proposed, such as sizing of series reactor, location and value.

TOOLS

Different tools can be used according to the subject to be studied and customer requirements.

  • DigSilent Power Factory

  • ETAP

  • CYME Int’l

  • PSCAD

  • EMTP-RV

  • ATP – EMTP

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Want to learn how we can help you?

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