Harmonic Allocation to MV Customers in Rural Distribution Systems

Abstract

The harmonic management of power systems in Australia is governed by AS/NZS 61000.3.6. This document is limited to a discussion of principles with little advice on detailed calculation. A Standards Australia handbook shows how the standard can be applied to find customer harmonic allocations for city and urban power systems. This paper further extends this work to rural power systems having the features of isolated lumped loads and radials with spurs. A general harmonic allocation equation is developed containing an allocation coefficient which is required to be found for each MV system. It is shown that the computation to find this coefficient can be simplified so that a small spreadsheet can be used.

Key Words:

• Distribution systems
• harmonic allocation
• harmonics
• IEC standards

Additional information

Notes on contributors

V.J. Gosbell

Vic Gosbell obtained his BSc, BE and PhD degrees from the University of Sydney. He has held academic positions at the University of Sydney and the University of Wollongong, where he became the foundation Professor of Power Engineering. He is now an Honorary Professorial Fellow and Technical Advisor to the Integral Energy Power Quality and Reliability Centre. He is currently working on harmonic management, power quality monitoring and standards. He is a member of Australian standards and CIGRE sub-committees, and is a Fellow of Engineers Australia. He was awarded the MA Sargent Medal for 2007.