Distribution Voltage Management, High PV Penetrations and the 230V Transition

Distribution Voltage Management, High PV Penetrations and the 230V Transition


There has been a rapid increase in the connection of distributed solar photovoltaic (PV) systems in Queensland over the last decade. This has led to a range of challenges for the distribution networks including reverse flows and voltage rise on distribution feeders which traditionally only supplied loads. As a result there has been an increased range in steady-state voltage regulation on the low voltage (LV) network. Reductions in LV levels to transition from the 240V to the 230V standard have helped reduce overvoltage, increasing PV hosting capacity. Ongoing increases in steady state voltage rise on distribution feeders, associated with rising PV penetrations, will continue to increase voltage regulation. This becomes problematic where voltages already swing significantly between the upper (253V) and lower (216V) statutory limits as is observed on rural networks and increasingly networks with high existing PV penetrations.

This presentation will cover:

  • the growth of PV systems on Queensland’s LV distribution network leading to reverse flows;
  • the traditional distribution voltage management approaches undertaken in Queensland;
  • the 230V transition and some results from LV network monitoring;
  • the increased voltage regulation associated with high PV penetrations and reverse flows;
  • some of the emerging approaches and technologies to maintain acceptable voltage regulation and enable increasing PV penetrations.


Peter Kilby– Intelligent Grid Engineer at Energy Queensland

Peter is an Intelligent Grid Engineer at Energy Queensland with a focus on distribution voltage management practices and the integration of high penetrations of DER. After completing a Bachelor of Engineering with honours in Electrical Engineering and a Bachelor of Science majoring in Physics in 2009, he joined Energex, the South East Queensland distributor, which later merged with Ergon Energy to become part of the Energy Queensland Group. He has worked in a range of areas including standards, substation design, voltage management and DER integration.

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Event Details

Tuesday 27 August 2019

3:30 - 5 pm


Energy Queensland

Level 1, Brisbane Room, 26 Reddacliff Street

Newstead QLD 4006

Registration Open


Registration Closes

3:30pm 27 Aug 2019


EESA members: $0
Non-members: $30


The Queensland Chapter of EESA.

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