Microgrids could increase energy reliability

A new study from University of Canterbury (UC) researchers says reliable energy generation could be key to recharging communities.

Cyclone Gabrielle earlier this year saw hundreds of thousands of New Zealanders lose power as a direct result of the cyclone’s impact on the national electricity grid – which also disrupted some EV charging.

While weather conditions remain unpredictable due to climate change, a team of UC researchers are exploring microgrid technology in hopes of improving the resilience and reliability of power generation in communities.

A more compact version of the system controlling the national power supply, a microgrid is a small power system that can be installed in individual homes and businesses.

The technology would allow residents and business owners to generate and store power for themselves and their neighbourhoods, the university says.

Dr Jeremy Watson of UC’s School of Electrical and Computer Engineering is leading the research team which includes local, national and international experts.

The study will investigate and design new controllers through a “plug-and-play” approach, optimising microgrid use through solar and similar alternate methods of energy generation, which also serves to progress the government’s goal of 100% renewable electricity here by 2030.

“Microgrids are seen as a key tool in enabling renewable energy, but it is the development of microgrid control that is crucial to unlocking their full potential,” Watson explains.

In addition to the ability to generate independently produced energy, the rollout of microgrids in communities will also lessen reliance on the national power grid, ensuring consistent power, or restoration of power more quickly, to more of the population following a crisis, he adds.

The importance of a reliable energy grid is crucial, says professor Neville Watson, a key contributor to this study.

“If we don’t do anything, in future we will be using band-aid solutions to address problems as they occur, such as system constraints, equipment malfunction and premature component failure.”

In addition to introducing lower emission systems, the research team believes the successful adoption of microgrids in our communities will further contribute to New Zealand’s standing as a leader of technologies integral to future energy systems.

The global microgrid market is expected to be valued at $47.4 billion by 2026.

By developing world-class expertise in this area, New Zealand companies can tap into a growing market and export their expertise and technologies to other countries, says the university.

This will not only enable the transition to 100% renewable and resilient electricity generation for New Zealand, but also create new opportunities for exports and economic growth, it explains. At least two postgraduate students are expected to soon join the research team which includes Dr Jeremy Watson (microgrid control), associate professor Alan Wood (power electronics and power systems), professor Neville Watson (power systems and power electronics), Dr Radnya Mukhedkar