Exploring innovative, technological and commercial practicalities in installing a microgrid system

  • Session Topic
    Microrenewables
    Offgrid Applications

Exploring innovative, technological and commercial practicalities in installing a microgrid system

4 Oct 2018, 2:50 PM - 4:10 PM

Room 217
Language:
English (Australia)

Chair: Tristy Fairfield, New Projects and Stakeholder Engagement, Carnegie Clean Energy

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Commercial value streams for Microgrids in grid connected scenarios, including grid support

Victor Dunand, Solutions Architect, Schneider Electric

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Looking at solutions for a new era of Grid Independence

Harsha Venkatesh, Director Product Line Management, Enphase

The grid operators have a strong influence on the operation of a grid tied self-consumption system. This influence creates a power imbalance allowing them to dictate interconnection requirements – both regulatory and economical. For example, the utility push to eliminate NEM and add demand charge and ToU pricing, the need for AGF and IEEE2030.5 DER management. All these increase the cost of the solar system. 

Imagine instead a world where this imbalance is completely neutralised and the grid is treated as just another generation or consumption resources. Decisions on energy usage are made via an economic engine that ensure lowest cost with highest QoS. This is the future of energy. In this talk find out about leveraging the power of hierarchical designs well as grid agnostic technologies.

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International Case Study of Application technology and experience of Microgrid in China

Jasmine Liu, General Manager, GeneMic Greentech Tianjin

There are more than 200 non-electric villages and towns, with over 3 million people that live without electricity. However, the national grid is far from able to meet the huge demand in such areas due to its current construction structure. Under this pressure, micro-grid came into being for its quick deployment and the ability of providing stable electricity to individual communities. And the demand of this energy-supply type is growing urgent. 

This presentation will firstly introduce the current development of micro-grid in China and its key application areas-industrial parks, remote non-electric areas and islands. The market capacity and technology trend will also be presented to indicate the future development of micro-grid in China. As of 2017, at least 1000GW of low-wind land resources is waiting to be developed most locates in the eastern and southeastern coastal areas. And micro-grid of industrial park type is the main form in this area. On the other hand, western provinces, such as Sichuan covers a huge area of non-electric villages. Therefore, micro-grid system is highly required. In the second part, two cases will be cited to introduce the application of micro-grid in remote areas and islands. Taking the island micro-grid as an example, the current energy supply mainly depends on diesel power generation, which is single structure with high cost and low energy utilization. The combination of wind power, solar power and energy storage is a better alternative. However, in remote rural areas, micro-grid is generally used as separate micro-source and multi-energy complements. Thirdly, the system models of remote area and island will be introduced in detail to describe how to realize the optimal matching scheme of micro-grid, and the new technology that has applied under special electricity demand. Finally, the presentation will summarize the application experience and proven technology of micro-grid in China.

For micro-grid system, wind power is one the most important energy type, of which small and mid-size wind turbines are mostly used in the projects. As a professional mid-size wind turbine manufacturer, GeneMic Greentech focus on the research of 50-500kW wind turbines which apply to remote areas, islands and other type of areas.

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Improving Microgrid Stability with Cat Hybrid Microgrid Products

Ron Hall, Hybrid MicroGrid Systems - Segment Manager, Energy Power Systems Australia

Caterpillar has been servicing microgrids for decades, In Australia we have over 200 Service locations and more than 2,000 technicians working within the service network that captures microgrids as well as other Cat products. We have an extensive range of power generation products, from Diesel and Gas Generators to Gas Turbine technology. Cat is in many cases the equipment of choice for microgrid operators across Australia and the world. Microgrid design is being revolutionised right now with the world wide roll out of high penetration, low cost renewable energy being integrated into many projects. This integration of generation assets like Solar and Wind pose some very unique and tricky challenges that can be difficult to resolve.  

The 2 main challenges for designers are:

  1. the issues of Transient response of the generation plant during a cloud flyover or significant load increase.
  2. the ability to deliver fault contribution when the generators are switched off.

Transient response challenges on a microgrid are a difficult engineering challenge, for decades the typical approach has been for designers to simply oversize the generation capacity of a site to handle the load steps. For example, when a large ball mill comes on line the load transient can be huge and difficult to handle. This method of oversizing a generation plant facilitates the load step with a spinning reserve and provides a huge amount of inertia into the system that helps the generators smooth out the frequency deviation and keeps the voltage within acceptable limits. 

To help reduce the number of generators required on this type of system Cat has developed the Grid Stability module, a series of batteries and inverters that use the Cat Patented “Non-Linear Droop controller” This GSM can act as a virtual spinning reserve and the performance of the droop controller dramatically improves the transient capability of the site.

A serious limitation of many systems is the ability to completely switch off generators and still safely operate the facility, Cat Has developed the Bi-Directional Power inverter to enable this operating scenario. The BDP has a very high overload rating, high enough to generate a fault current in this type of operating condition. Where other systems require a synchronous alternator to be inline the Cat PGS does not. This greatly improvs the overall fuel offset with renewable energy, making a more efficient and reliable system.

In this presentation, Ron will explain the methods behind these improvements and show some case studies of projects that are using this equipment right now to improve the reliability of their Microgrids.

Contributors

  • Tristy Fairfield

    Chairperson

    New Projects and Stakeholder Engagement

    Carnegie Clean Energy

    Tristy Fairfield is a renewable energy professional with 20 years’ experience across electricity retail, networks and generation, in both policy and...

  • Harsha Venkatesh

    Speaker

    Director of Product Line Management

    Enphase

    Harsha is currently a Director of Product Line Management at Enphase Energy, an energy technology company headquartered in Petaluma, California. He...

  • Jasmine Liu

    Speaker

    General Manager

    GeneMic Greentech Tianjin

    Ms. Jasmine Liu is the General Manager of GeneMic Greentech Tianjin, which has been involved in the wind power industry since 2003.  As the leader...

  • Ron Hall

    Speaker

    Segment Manager Microgrid & Hybrid

    Energy Power Systems Australia

    Ron Hall is an established expert with over 15 years of experience in the development and construction of thermal and Renewable energy projects. Ron...

  • Victor Dunand

    Speaker

    Solutions Architect

    Schneider Electric

    Victor is a Solution Architect for Schneider Electric. For the past 9 years he has been working all over the electricity delivery chain following...

Opening Times
Wed 3 Oct Exhibition 9.00am – 5.00pm
Wed 3 Oct Networking Event 5.00pm - 6.30pm
Thur 4 Oct Exhibition 9.00am – 5.00pm

Registration opens 8.00am

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