Heat-pump performance: voltage dip/sag, under-voltage and over-voltage

Content Partner: Directory of Open Access Journals. Reverse cycle air-source heat-pumps are an increasingly significant load in New Zealand and in many other countries. This has raised concern over the impact wide-spread use of heat-pumps may have on the grid. The characteristics of the loads connec...

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Main Authors: William J.B. Heffernan, Neville R. Watson, Jeremy D. Watson
Format: Article
Language:English
Online Access:Request full text
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Summary:Content Partner: Directory of Open Access Journals. Reverse cycle air-source heat-pumps are an increasingly significant load in New Zealand and in many other countries. This has raised concern over the impact wide-spread use of heat-pumps may have on the grid. The characteristics of the loads connected to the power system are changing because of heat-pumps. Their performance during under-voltage events such as voltage dips has the potential to compound the event and possibly cause voltage collapse. In this study, results from testing six heat-pumps are presented to assess their performance at various voltages and hence their impact on voltage stability.