Application of Australian Standards for Management of Harmonics, Unbalance & Flicker
Course Description Before connection of large loads or generators, the National Electricity Rules (NER) require action to be taken to ensure that the connections will not have an adverse impact on network quality of supply which essentially includes the disturbances: harmonics, voltage fluctuations and flicker, and voltage unbalance. It is the responsibility of the network operator to allocate an agreed level of disturbance emission level and it is the responsibility of the connection proponent to ensure that the installation to be connected can meet the emission requirements. In Australia, the most common processes used to specify emission allocation levels are defined in the AS/NZS 61000 series of EMC standards, specifically: • AS/NZS TR IEC 61000.3.6 for harmonics • AS/NZS TR IEC 61000.3.7 for voltage fluctuations and flicker • AS/NZS TR IEC 61000.3.13 for unbalance This course has been developed to allow better understanding of these standards and the methodologies for allocation of each the specific disturbance emission levels. An optional third day includes examples and discussion of practical implementation of the theoretical components of days 1 & 2. Course Outcomes At the conclusion of the course participants will: • Have an understanding of the causes and effects of harmonic distortion, voltage fluctuations and flicker, and unbalance and the need to limit their magnitudes in electricity supply networks • Have an understanding of the current Australian Standards related to power quality and how they work together to maintain acceptable quality of supply • Understand the challenges in applying the Australian Standards for allocation of harmonics, voltage fluctuations and flicker, and unbalance • Have encountered the problems in the practical application, concepts and methodologies defined in AS/NZS TR IEC 61000.3.6, AS/NZS TR IEC 61000.3.7 and AS/NZS TR IEC 61000.3.13 • Understand the steps and resources required to practically implement Australian Standards for the purposes of allocating and assessing PQ emissions