The impact of harmonic resonance conditions on the connection rules for large industrial installations

The impact of power system harmonics generated by customer installations and utility equipment (i.e. SVC´s and HVDC schemes) is affected by the presence of resonance conditions in the supply network. Such resonance conditions arise due to the interaction of the generally inductive network with utility capacitors, customer power factor correction capacitors, and line and cable capacitances. The management of such resonance conditions is important in ensuring that harmonic levels are managed on utility networks., and that fair emission limits are allocated to customers. This paper considers the impact of shunt capacitor resonances on the allocation of harmonic emission limits using standards such as IEEE 519:1992 and IEC 61000-3-6:1996