Grid analyses and simulations for secure operation

NSE AG offers an extensive range of services, from easy grid calculations through comprehensive simulations in physical threshold ranges. We create and maintain your digital grid model in the DIgSILENT Power Factory simulation program. Through digital reproduction, we can find vulnerabilities in your distribution network, financially plan grid extensions, or evaluate the connection of new generation and user systems. We can create a standard protection concept for your grid derived from the analysis. New protection installation setting lists can also be processed for all stations in your grid on request. Thanks to our trained staff, we are able to parameterize and test the protection relays on site and provide you with long-term support. With the documentation we offer consisting of network analyses, protection concepts, protection coordination, parameterization, installation, and testing of your protection devices, you can ensure the long-term security of your grid's operation.

What we offer:

  • Existing equipment databases are continuously updated with experienced product manufacturers
  • We are the official representative for DIgSILENT Power Factory in Switzerland
  • Many years' experience in the power technology sector
  • Reliably saving your grid data with the option of accessing this online for DIgSILENT Online
  • Medium-voltage protection relays, services, system engineering, and conversions directly from a single source
  • Customer-specific support is very important to us

Your benefits at a glance

Calculation of the load flow:

  • Optimal switch status for minimal grid losses
  • High level of grid reliability in normal operation and in the event of a fault
  • Easy to plan modifications in the grid

Calculation of the 2-pole short circuit:

  • The values of the 2-pole minimal error current to all busbars
  • Optimal settings of your protection relays to the lower error current thresholds

Calculation of the 3-pole short circuit:

  • The values of the 3-pole maximum error current to all busbars
  • Check of the thermal and mechanical strength of your systems and switch devices
  • Check of the permissible cable turn-off times
  • The calculation takes place statically in accordance with the IEC, ANSI, or VDE standards
  • A complete calculation taking into account the load flow is possible on request

Calculation of the ground fault:

  • Calculation of the capacitive ground fault current in the event of an error
  • Foundation for a functional ground fault current protection concept
  • Control of the maximum permissible step voltage in your grid
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