Harmonic management in transmission networks

摘要: Harmonic distortion in power systems is increasing worldwide, due principally to increased penetration of electronic equipment both transmission and distribution networks. In Australia, the key regulatory bodies have included acceptable levels harmonic licence conditions for network operators. However, standard AS/NZS 61000.3.6 limiting requires modification order be applied Australian The aspects management considered this thesis combine two elements: allocation compliance assessment. Allocation process at buses throughout by restricting injection permitted individual connected customers. Compliance assessment, as name suggests, verification that those limits are not exceeded. Neither clearly defined 61000.3.6, yet required prevent unacceptable levels. principle, maximum should a trade–off between minimising costs with requirements imposed distortion. To identify, comprehensive theoretical manner, on would require detailed study all having potential susceptible problems. Such beyond scope thesis. proposes compatibility level act boundary which low–voltage must able tolerate without maloperation. Planning derived from intended performance measures buses. Compatibility planning form basis philosophy. This examines setting Methods allocating rights multiple customers investigated developed. present methodology recommended does guarantee emission allocated customer installations will ensure exceedances avoided. A revised method proposed overcomes this. Modifications based practical considerations also suggested. purposeless if cannot checked Many authors examined questions similar this, specifically identifying eventual aim. Desired properties satisfactory test identified several superficially attractive solutions dismissed result. solution evaluation Norton–equivalent circuit installation field measurements. integrates assessment tasks into framework For new techniques proposed. Statement Originality I, Timothy Browne, declare thesis, submitted fulfilment award Doctor Philosophy, School Electrical, Computer Telecommunications Engineering University Wollongong, wholly my own work unless otherwise referenced or acknowledged. document has been qualification any other academic institution.