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Electrical power grid studies

Energy system studies

Simulation engineering

Harmonic analysis

You can contact the CAPSIM's specialist of this activity:
   - By email
   - By phone: +33 (0)4 42 63 61 18
The presence of increasingly large power-electronics equipment (inverters, converters, motors with variable-frequency drive supplies, etc.) and power consuming IT devices (data centres) implies the circulation of significant harmonic currents in modern distribution grids. At the same time, voltage quality of a grid is a critical objective which is subject to specifications and standardizations.

In addition to raising the effective value of the current circulating in the grid, these harmonics, if they are generated at certain orders and at sufficient amplitude, can create significant overvoltage at points on the grid and can destroy equipment, particularly electronic and IT equipment.

Service principle:
Capsim carries out harmonic studies through:
- evaluation of the harmonic currents generated by the loads according to their characteristics
- calculation of harmonic propagation using numeric simulation tools
- analysis of the frequency impedances at various points on the grid to highlight the risk of resonances.

It is thus possible:
- to measure the amplitude of the harmonic currents circulating in each branch and the rate of harmonic distortion of the voltages at each point on the grid
- to propose and validate solutions for filtering harmonics allowing decontamination of the grid.

Corresponding achievement(s):

Calculation of the harmonic distortion of a grid
Calculation of the harmonic distortion of a grid

CAPSIM - Les Grandes Terres - 13650 MEYRARGUES - France
Tel : +33 (0)4 42 63 61 18 - Fax : +33 (0)4 42 63 61 19