Jonathan Dennis

My tenure of the E S Cornwall Memorial Scholarship ran from January 2009 until June 2010. My program was aimed at gaining experience in the measures being applied internationally by transmission companies to manage three main deficiencies of large centralised renewable generation, being: 1) variability of renewable power generation over time, 2) low inertia, poor fault ride through capability, and 3) remote location necessitating long distance radial connections.

 

Upon my return from the ES Cornwall scholarship experiences in various parts of Europe and North America, I was invited to present of my experiences at a number of forums.

This Final Presentation (in PDF) provides a summary of my experiences – and includes some possible implications for the deployment of large-scale renewables in the Australian electricity supply industry.

In this presentation, I also discussed some aspects of personal growth and interest whilst on my time overseas.

I would welcome your comments on this presentation.

 

My scholarship ran from 2008 through until 2010.

I used my tenure of the scholarship principally to gain experience in the measures being applied internationally by transmission companies to manage the connection of large centralised renewable generation.

To this end, I spent a year and a half working in the British power industry – with consulting and transmission utility firms.

I also gained some insight into the situation throughout greater Europe and North America through technical visits, a couple of conferences, and involvement in an international working group.

My Final Report (in PDF) documents the impressions I gained from these experiences and my thoughts regarding how they might apply to the Australian context.

 

This report covers the period from April 2010 until concluding the scholarship in September 2010.

During this time, I was employed by National Grid in the United Kingdom and tasked with working on a fundamental review of Great Britain’s transmission planning criteria.

Additionally, I was able to visit a number of companies (Fingrid, ABB, Alstom, Psymetrix, Axpo, and HydroOne) and attend the 2010 Cigre Session.

My 6th Quarterly Report (in PDF) documents my impressions from each of these activities.

 

The last few months at National Grid have been particularly interesting, with some significant involvement in the revision of the planning criteria to take account of wind generation.

I also visited Fingrid earlier this month and greatly appreciated learning about their approach to asset management and network planning.

My 5th Quarterly Report (PDF) discusses what I have learnt through till April 2010.

 

During the fourth quarter of 2009, I have continued working for National Grid in the United Kingdom.

My primary responsibility has been to assist in the preparation of the inaugural Offshore Development Information Statement (ODIS), which was published in late December.


The ODIS is available here, on the National Grid website.

My 4th Quarterly Report (here in PDF) therefore focuses on the intention behind the ODIS, issues encountered in its preparation, its content and the industry’s reaction to it.

Working on the ODIS afforded interaction with a range of people in various commercial teams and government departments and has provided some insight into the broader response to climate change issues and how this is likely to impact on the power industry.

This is briefly covered as a secondary topic.

 

During the third quarter of 2009, I have been working for National Grid in the United Kingdom.

My main responsibility to date has been assisting with the compilation of a report describing how the UK’s onshore and offshore transmission networks can be developed together in a coordinated and economical fashion. As this project is still ongoing with the report due to be published in late December 2009, I will refrain from discussing it or its findings until my next scholarship report.

This has afforded me valuable insights into the impact of significant volumes of intermittent renewable generation on the analysis and design of power networks, which I discuss in my report.

As previously indicated, my overwhelming impression since commencing the scholarship is that the obstacles to the increased use of renewable generation are multi-faceted, and the technical difficulties listed above must be considered alongside the political, regulatory, and commercial obstacles. I have therefore sought to investigate and report on all of the transmission related obstacles to increased use of renewable generation.

See more in my 3rd Quarterly Report (PDF) here.

I welcome any feedback or questions from the committee or other interested parties on anything I have discussed in my report and my aspirations for the next quarter.

 

My second quarter on the ES Cornwall Scholarship has provided valuable insight into:
1) the design of offshore transmission networks and generation arrays,
2) the market arrangements which exist in Great Britain, and
3) the impact of significant embedded renewable generation in sub-transmission networks.

It covers the period from mid April to the end of July, the second half of my tenure with Senergy Econnect in their
Power Systems Analysis team.

My experiences have been documented in this 2nd Quarterly Report (PDF).

During this period I am grateful to have been able to attend the Cigre B4 Colloquium on recent advances and future applications of HVDC technology.

My impressions from this conference are documented in report appended to my 2nd quarterly report.

 

During my first quarter on the ES Cornwall Scholarship, I worked with Senergy Econnect in their Power Systems Analysis team.

This first quarter has provided valuable insight into:

  • the dynamic behaviour of different types of wind turbines,
  • the criteria used to plan and operate Great Britain’s transmission system, and
  • the measures that have been taken to overcome obstacles to the widespread uptake of renewable generation.

My 1st Quarterly Report is here (in PDF) and provides discussion of these (and other) issues.

I would welcome feedback on this report and my aspirations for the next quarter.

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