Geoff’s research and consulting interests included demand management, integrating renewable generation, distribution network evolution, transmission planning, energy market development, and energy storage technology and applications. In 2013 Geoff joined Reposit Power to help commercialise residential energy storage in the Australian market. Geoff received his PhD in Physics in 1991 contributing to technology for radioastronomy at the University of Tasmania. He then joined CSIRO and until 2002 worked on research and commercial projects in radio antenna engineering. Following a period working on distributed systems with embedded intelligence, Geoff began to apply these ideas to distributed energy
Geoff provides strategic leadership and research know-how in energy management technologies, enabling and promoting the uptake of demand management and distributed generation at the Institute for Sustainable Futures. He specialises in developing energy storage applications and demonstrations to encourage the use of new energy storage technologies in Australia’s electricity system, enhancing the market value of renewable energy, and enabling the grid to manage a diverse mix of energy sources. With Reposit Power he contributed to battery control technology and liaised with electricity distribution networks and the market operator to implement business models that make energy storage viable in the present market and regulatory environment.
Geoff is a Member of the IEEE, the AIE and the EESA, and is a frequent speaker and convener at clean energy industry events.
Can supervise: YES
Guo, H, Wang, F, James, G, Zhang, L & Luo, J 2018, 'Graph theory based topology design and energy routing control of the energy internet', IET Generation, Transmission and Distribution, vol. 12, no. 20, pp. 4507-4514.View/Download from: UTS OPUS or Publisher's site
© The Institution of Engineering and Technology 2018. As a core of energy internet, the energy router (ER) controlled by information flows can better realise the large scale utilisation of renewable energy. In order to build a cost-effective energy internet, a modified minimum spanning tree algorithm is proposed to optimise the cable layout among ERs, i.e. topology design. Considering the real-time and the asynchrony of power transmission in the above topology determined energy internet, an energy routing control method based on Dijkstra algorithm is put forward for source-and-load pairs to find a no-congestion minimum loss path. Besides, the loss allocation and congestion managements are realised at the same time. Finally, the simulation results prove the feasibility and effectiveness of proposed optimisation algorithms.
Halawa, E, James, G, Shi, XR, Sari, NH & Nepal, R 2018, 'The prospect for an australian-asian power grid: A critical appraisal', Energies, vol. 11, no. 1.View/Download from: UTS OPUS or Publisher's site
© 2018 MDPI AG. All rights reserved. Australia is an energy net self-sufficient country rich in energy resources, from fossil-based to renewable energy. Australia, a huge continent with low population density, has witnessed impressive reduction in energy consumption in various sectors of activity in recent years. Currently, coal and natural gas are two of Australia's major export earners, yet its abundant renewable energy resources such as solar, wind, and tidal, are still underutilized. The majority of Asian countries, on the other hand, are in the middle of economic expansion, with increasing energy consumption and lack of energy resources or lack of energy exploration capability becoming a serious challenge. Electricity interconnection linking two or more independent grids within a country or at cross-border or regional levels has found its way into electricity markets worldwide. This concept allows for electricity exchanges that lead to optimized use and sharing of electricity generated from different sources. The interconnection also enables the long distance exploitation of renewable energy which would otherwise be physically impossible. ASEAN (Association of Southeast Asian Nations) and other regional groupings in Asia have initiated a number of interconnections to gain economic benefits. Asian's hunger for energy for its economic development, climate change that has become a global and urgent issue to be solved, and Australia's abundant renewable energy resources have all prompted increasing interest in a super-grid interconnection linking Australia to Asian grids, the Australian-Asian (Power) Grid (AAG). This paper overviews the existing grid interconnections as well as current initiatives at domestic, sub-regional, and regional levels worldwide, with a particular focus on Asia. The paper concludes with a critical appraisal on the benefits, potential, challenges and issues to be encountered by the AAG initiative.
The electricity system is created as a giant rotating mass. Hundreds of fast-spinning turbines are elegantly joined together by three-phase electrical currents twisting along the transmission network - Australia has the longest in the world. They are synchronised at 3,000 rpm divided by some number of electrical windings, so that the passing of rotors over stators forms an alternating current at the 50 Hz grid frequency.
Xue, Y, Cai, B, James, G, Dong, Z, Wen, F & Xue, F 2014, 'Primary energy congestion of power systems', Journal of Modern Power Systems and Clean Energy, vol. 2, no. 1, pp. 39-49.View/Download from: UTS OPUS or Publisher's site
Du, Y, Lu, DD-C, James, G & Cornforth, DJ 2013, 'Modeling and analysis of current harmonic distortion from grid connected PV inverters under different operating conditions', SOLAR ENERGY, vol. 94, pp. 182-194.View/Download from: UTS OPUS or Publisher's site
Taggart, S, James, G, Dong, Z & Russell, C 2012, 'The Future of Renewables Linked by a Transnational Asian Grid', Proceedings of the IEEE, vol. 100, no. 2, pp. 348-359.View/Download from: UTS OPUS or Publisher's site
n this paper, we argue that Asia's unique geography, abundant low-emission energy resources, rapid economic growth, and rising energy demands merit consideration of a Pan-Asian Energy Infrastructure. In our study, we focus on development of wind and solar resources in Australia, China, Mongolia, and Vietnam as the potential foundation for an electricity grid stretching from China to Australia. Hourly climate data for a full year are used to estimate renewable energy generation, electricity demand, generation capacity are projected forward to the year 2025, and economic dispatch in an international market is simulated to demonstrate cost benefits. Intermittency, connectivity, future dispatch orders, storage, line losses, and engineering and financial issues are all addressed.
This article describes our research in technologies for the management and control of distributed energy resources. An agent-based management and control system is being developed to enable largescale deployment of distributed energy resources. Local intelligent agents will allow consumers who are connected at low levels in the distribution network to manage their energy requirements and participate in coordination responses to network stimuli. Such responses can be used to reduce the volatility of wholesale electricity prices and assist constrained networks during summer and winter demand peaks. In our system, the coordination of energy resources is decentralized. Energy resources coordinate each other to realize efficient autonomous matching of supply and demand in large power distribution networks. The information exchange is through indirect (or stigmergic) communications between agents. The coordination mechanism is asynchronous and adapts to change in an unsupervised manner, making it intrinsically scalable and robust.
Platt, G, Li, J, Li, R, Poulton, G, James, G & Wall, J 2010, 'Adaptive HVAC zone modeling for sustainable buildings', Energy and Buildings, vol. 42, no. 4, pp. 412-421.View/Download from: Publisher's site
Xun Zhou, James, G, Liebman, A, Zhao Yang Dong & Ziser, C 2010, 'Partial Carbon Permits Allocation of Potential Emission Trading Scheme in Australian Electricity Market', IEEE Transactions on Power Systems, vol. 25, no. 1, pp. 543-553.View/Download from: UTS OPUS or Publisher's site
James, G, Jiaming, L, Poulton, G & Guo, Y 2009, 'Multiple energy resource agent coordination based on electricity price', Journal of Distributed Energy Resources, vol. 5, no. 2, pp. 103-120.
Yu, C, Xue, Y, James, G & Xue, F 2017, 'Impacts of large scale wind power on power system transient stability', 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT 2011),, Shandong.View/Download from: UTS OPUS
Wyndham, J, James, G, McIntosh, L & Alexander, D 2016, 'Network Services from Distributed Solar PV and Inverters', Proceedings of the Asia Pacifi c Solar Research Conference 2016, Australia Pacific Solar Research Conference, Australian PV Institute, Australian National University.View/Download from: UTS OPUS
Networks Renewed is a major new project funded by the Australian Renewable Energy Agency (ARENA) that aims to demonstrate how solar PV, battery storage and inverters can support distribution networks in managing power quality. The path to implementation will be established by two commercial-scale demonstrations of controlled solar PV and energy
storage in the regional Mid North Coast of NSW, and suburban Melbourne in Victoria. At the time of this conference the deployment of inverters and control technologies will have commenced towards pilot-scale demonstrations to test candidate control algorithms, several of which have been published in the engineering literature. These will develop into market-scale demonstrations to achieve useful power quality improvements on selected network segments, and also market trading revenues, should these materially improve the financial returns to customers from inverter control.
Du, Y, Lu, DDC, Cornforth, D & James, G 2011, 'A study on the harmonic issues at CSIRO Microgrid', Proceedings of the International Conference on Power Electronics and Drive Systems, IEEE International Conference on Power Electronics and Drive Systems, IEEE, Singapore, Singapore, pp. 203-207.View/Download from: UTS OPUS or Publisher's site
With increasing number of photovoltaic (PV) systems connected to the electricity network in Australia, power quality becomes a major concern. There is an increasing interest in Microgrids due to their potential to provide a solution to integrate renewable energy into the wider grid. This paper presents a study on the harmonic issues in a Microgrid. Different experimental scenarios have been carried out to characterize the voltage and current distortions under different operation conditions. Matlab/Simulink simulation and field experimental results have been provided. The results showed that the harmonic current emission can be affected by the output power level of PV inverter. In addition, the current and voltage waveforms distortion at the Point of Common Coupling to the grid is significantly increased when the net power follow through the bus is close to zero. © 2011 IEEE.
Zhou, X, Dong, Z, Liebman, A & James, G 2008, 'Potential impact of emission trading schemes on the Australian National Electricity Market', IEEE Power Engineering Society General Meeting, Pittsburg, July 2008, Pittsburg.View/Download from: UTS OPUS
Power industry worldwide has been identified as a major source of greenhouse gas emissions. Consequently, many countries have started the implementation of emission trading schemes aimed at reducing greenhouse gas emissions by power stations. The Australian government aims to implement an emission trading schemes from 2010/2011. This scheme will greatly change the market perspective of the Australian National Electricity Market (NEM). A thorough understanding of the potential impact of emission trading is essential for market participants as well as energy market policy makers. In this paper, a targeted study of the NEM is presented to illustrate the impact on generation companies of different design choices regarding the free allocation of permits aspect of the proposed emission trading scheme. A recommendation is proposed to best promote reduction of emissions while minimizing the adverse impact on the electricity system, particularly on the generation companies.
Lovegrove, K, James, G, Leitch, D, Milczarek, A, Ngo, A, Rutovitz, J, Watt, M & Wyder, J ITP Thermal Pty Ltd 2018, Comparison of Dispatchable Renewable Electricity Options: Technologies for an orderly transition, Canberra.View/Download from: UTS OPUS
Mella, S, James, G & Chalmers, K 2017, Evaluating the potential to export Pilbara solar resources to the proposed ASEAN grid via a subsea high voltage direct current interconnector.
James, G 2015, Market participation of commercial energy storage.
James, G 2015, Robust Meter Data Regression for an Electrical Influence Point Model.
James, G 2014, An electrical influence point model for control in distribution networks.
James, G Smart Storage Pty Ltd trading as Ecoult 2014, Public-domain test data showing key benefits and applications of the UltraBattery.
James, G 2013, Using the UltraBattery for remote area power supply and photovoltaic generation support.
James, G 2013, Wind energy integration in North China.
In July 2012, CSIRO was contracted by Australian Energy Market Operator (AEMO) to provide information on renewable energy supply, electricity generation opportunities and storage for the National Electricity Market (NEM) region of Australia. CSIRO was asked by AEMO to investigate a subset of technologies while other organisations have investigated the remaining renewable options. The information supplied to AEMO will be used by as part of a "100% renewable supply" project that the Federal Government has requested AEMO to undertake. AEMO divided the NEM region into 42 geographical 'polygons' of various sizes, and requested information on each renewable resource, likely energy supply and storage opportunity in each of the polygons. This report examines the opportunities for several storage technologies: solar thermal molten salt storage, biomass, biogas, compressed air energy storage (CAES) and batteries.
James, G 2009, Alternative energy solutions for data centre consolidation.
The technical ability of inverters, large or small, to provide power quality services including voltage regulation is well understood. The ubiquity of customer inverters and their suitability for distributed intelligent control present opportunities to manage distribution networks with a precision not seen before. When a suitable commercial model is proved rapid adoption of inverter controls can be expected. This paper describes a market-scale demonstration uses a working commercial model for voltage regulation using customer inverters in Australia. Inverter controls have been executed as part of a virtual power plant platform to enable voltage support actions and rewards to two separate communities in Australia. The market value of voltage support services has been explored and initial findings are presented. These are important steps in establishing this service-based model as a common practice.