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EEI – MODELLING AND DESENSITIZATION TO VOLTAGE INTERFERENCE

MODELLING

EEI specialises in HV/MV and LV network engineering, AC and DC, for the supply of sensitive or critical systems, and/or the production of electricity.

EEI uses powerful modelling software resources to conduct the following electrical design work:

  • Energy flow (or load flow)
  • Computing of short circuit currents
  • Selectivity
  • Harmonic distortion
  • Motor startup
  • Checking reactive constructive capacities
  • Dynamic stability (or transient stability): on voltage dips, on short circuit, on load transfer
  • Operating overvoltages

EEI has completed many connection analyses to ERDF and RTE networks, for both operators and manufacturers, in order to check that installations meet the requirements of the directives of 23rd April 2008 and the network managers’ reference technical documentation.

EEI also conducts RAMS (grids regulations), based on computing the reliability ratio (λ) and availability ratio (μ) of an electrical installation.

Based on the functional analysis of the installation and a reliability database for the various installation components, dynamic modelling, in the form of a failure flowchart, enables the occurrence probability of a feared event to be computed.

 

DESENSITIZATION TO VOLTAGE INTERFERENCE

Irrespective of the origin of your voltage interference:

  • Harmonics
  • Voltage dips
  • Micro-failures
  • Flicker
  • Transient overvoltage

To eliminate its effect:

  • Process shutdown
  • Data loss
  • Raw materials losses
  • Overheating of cables, motors, etc.
  • Accidental speed controller shutdown
  • Destruction of capacitor banks
  • Light flickering
  • Electronics board failures

For all types of interference…

  • Network architecture analysis
  • Measurements, recordings
  • Compliance analysis: NF EN 50-160, IEC 61000
  • Qualification of interference

…specialist engineering to help you

  • Sizing of desensitizing solutions,
  • Detailed technical specifications of the installation needed,
  • Financial assessment of work,
  • Modelling on specialist software.

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EXPER ELEC INGENIERIE 320, avenue BERTHELOT 69371 - LYON Cedex 08 Tel. : +33 (0)4 37 90 69 00 Fax : +33(0)4 37 90 69 01 Qualification OPQCB