THE INFLUENCE OF THE DEFORMANT AND NON SIMETRIC PROCEDURE ON THE NULL CONDUCTOR IN THE LOW VOLTAGE INSTALLATIONS

Abstract

The paper presents general aspects regarding the nature of loads that are generated and circulate in low voltage networks, the influence on the null conductor and the calculation of the actual value of the current on the null. The paper considers the measured values of null current in networks with deforming and unbalanced loads related to transformer stations. The calculation of power and energy losses in symmetrical and non-symmetrical balanced three-phase networks allows the determination of the CPT growth rate (own technological consumption) and its comparison with that determined from the graphs given by the standards. Balancing measures of phase loading and reduction of deforming regime are analyzed.

Keywords

• transformer station
• null conductor
• harmonics
• imbalance