Analysis of the influence of non linear loads on power dissipation of LV cables J. Desmet, D. Putman.

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Presentation transcript:

Analysis of the influence of non linear loads on power dissipation of LV cables J. Desmet, D. Putman

Non linear Behavior Case: Current taken by IT equipement

Non linear Behavior Theoretical Considerations

Non linear Behavior Theoretical Considerations

Cable Temperature: Evaluation Temperature for balanced symmetric linear and nonlinear load (XVB cable 4*2.5mm²)

Cable Temperature: Simulation Simulated temperature distribution for balanced symmetric linear and nonlinear load 20A/phase (XVB cable 4*2.5mm²)

Conclusions Few triple n harmonics in distribution, so no special measures However in building distribution with a high number of IT loads, excessive neutral conductor currents occur so cable overheating is possible. Extra power losses are found (increase up to the double of linear load)