Sunday 26th September 2021

Tutorials

Grid-Connected Large-Scale Solar PV Integration Challenges in Weak Grids and  Connection process in Australia

Abstract 

In this presentation, Ingeteam as a manufacturer of large-scale central inverters for solar PV in Australia will share their experiences on the grid connection process and challenges for large-scale solar PV integration in Australia (particularly in the NEM network). Ingeteam has supplied around 3 GW of central inverters for solar PV plants across Australia and 18 GW globally.

 

Topics

1.       Introduction about Ingeteam and its technologies.

2.      Is the Australian grid ready for more Renewable Energy Sources (RESs)

         intake?

  •   What is the weak grid and system strength issue?
  •   Types of technologies that can help to penetrate more RESs into the weak      grid

3.       Key technical challenges and experience in the large PV plant integration.

  •   Grid connection rules, simulation studies and compliances

  •   Real field test performance and simulation model validation

 

by

Ingeteam Australia

Presenters

Dr. Oscar Alonso has more than 20 years of experience in the Renewable Industry Sector working with Wind and Solar converter manufacturers. He is specialised in power electronics systems, simulation models and grid integration studies. He is currently working as a power system engineer in Ingeteam Australia Pty Ltd.

Dr. Md Moktadir Rahman specialised in the large-scale solar PV, battery storage modelling, designing and grid connection simulation studies. He has several years of industry and research experience in the power and renewable energy sectors. He is currently working as a power system engineer in Ingeteam Australia Pty Ltd.

Advanced Planning of PV-Rich Distribution Networks

by

The University of Melbourne

Abstract 

Distribution companies in many countries are finding it challenging to allow residential and commercial customers to continue to install photovoltaic (PV) systems due to the potential technical impacts resulting from high penetrations. To remove these barriers, speed up connection times, and reduce costs, distribution companies are being asked by regulators to increase the PV hosting capacity of their low and medium voltage feeders. Adequately exploiting the capabilities of customer and grid-side solutions will be key.

This half-day tutorial will present and discuss different aspects required to assess the PV hosting capacity of distribution feeders. Based on the findings from the project “Advanced Planning of PV-Rich Distribution Networks” funded by the Australian Renewable Energy Agency (ARENA) and the distribution company AusNet Services, the tutorial will also present and discuss the benefits from adopting traditional and non-traditional solutions to increase the hosting capacity of PV-rich distribution networks. It includes the results of one the most advanced, highly-granular, detailed studies performed on multiple fully-modelled 22kV feeders (including pseudo low voltage networks) from Victoria, Australia considering time-series seasonal analyses and growing penetrations of solar PV.

 


Topics

1:00pm-1:50pm: Distribution Networks and Solar PV

  • The Basics. PV Hosting Capacity, Challenges, and Potential Solutions. Overview of the impacts from reverse power flows in low and medium voltage networks as well as the range of potential solutions to mitigate them.

  • Modelling of Distribution Networks. From Basic to State-of-the-Art. Overview of the different modelling considerations needed to carry out detailed network studies and PV hosting capacity assessments.

1.50pm-2.00pm: Break

2:00pm-2:50pm: Traditional and Non-Traditional Solutions

  • Traditional Solutions. Benefits from adopting traditional solutions such as adequate Volt-Watt and Volt-var PV inverter settings, change of off-load and on-load tap changer positions and/or network augmentation to increase the hosting capacity of PV-rich distribution networks.

  • Non-Traditional Solutions. Benefits from adopting non-traditional solutions such as OLTC-fitted LV transformers, Battery Energy Storage (BES) systems with Off-the-Shelf (OTS) and smarter controllers in combination with traditional solutions, and dynamic use of OLTCs at primary substations aiming at increasing the solar PV hosting capacity of PV-rich distribution networks.

2.50pm-3.00pm: Break

3.00pm-3:30pm: Complete Solutions: Performance and Cost

  • Different complete solutions (combinations of traditional and non-traditional solutions) that mitigate both voltage and asset congestion problems to achieve high PV hosting capacities are compared considering net present value accounting for both the CapEx and OpEx.

3:30pm-4:00pm: Planning Recommendations, Conclusions and Further Q&A

  • This part provides a series of planning recommendations to help distribution companies in Australia, and internationally, take adequate planning actions that facilitate the widespread adoption of residential PV in a cost-effective and practical manner.

Presenters

Prof Luis (Nando) Ochoa

The University of Melbourne, Australia

luis.ochoa@unimelb.edu.au

 

Luis(Nando) Ochoa is a Professor of Smart Grids and Power Systems at The University of Melbourne, Australia. His expertise in network integration of distributed energy resources (DER) and smart grids as well as his extensive portfolio of industrial and academic projects have led to 180+ research papers, 70+ technical reports, and two patents, one filed by Psymetrix Ltd (part of GE) and one filed by The University of Melbourne. Prof Ochoa is an IEEE PES Distinguished Lecturer and is also an Editorial Board Member of the IEEE Power and Energy Magazine. Prof Ochoa is an IEEE Senior Member since 2012. He holds a Bachelor's degree in Mechanical and Electrical Engineering from UNI (Peru), and a Research MSc and a PhD in Electrical Power Engineering, both from UNESP Ilha Solteira (Brazil).

More info: https://sites.google.com/view/luisfochoa

Dr William Nacmanson

The University of Melbourne, Australia

william.nacmanson@unimelb.edu.au

 

Dr William Nacmanson is a Research Fellow in Smart Grids at The University of Melbourne, Australia. His area of expertise involves DER, in particular, the use of residential rooftop PV systems within distribution networks to provide primary frequency response for under-frequency events at the system level, and recently investigating the impact and solutions of the integration of Electric Vehicles in distribution networks. He has been involved in the Advanced Planning of PV-Rich Distribution Networks and Electric Vehicle Integration into the Electricity System, both ARENA-funded projects aimed at providing planning recommendations for distribution companies and other stakeholders for the increased integration of DER within distribution networks. William completed his PhD at the University of Melbourne, completed a MSc with Distinction in Renewable Energy and Clean Technology at The University of Manchester, UK, and a BEng with First Class Honours in Electrical and Electronic Engineering at The Manchester Metropolitan University, UK.

Renewable Energy Integration into Australian Grid and Research Challenges with a focus on Australian Power Industry

by

Dr. Ke Meng and Dr. Mir Nahidul Ambia

The University of New South Wales & Australian Energy Market Operator

Abstract 

While renewable energy integration with advanced control methods is one of most promising research trends in power system, a gap between research and industry problems has been an area of concern. To remove these gaps and to create a pathway, this tutorial will focus on advanced research challenges and will highlight Australian Power Industry regulations. Furthermore, the tutorial will portray how Australian Industry Regulations such as National Electricity Rules (NER) can be used to make the research solutions and validations more meaningful and industry oriented.

 

1. Introduction to renewable energy in Australia

  • Trend of renewable energy in Australia

  • Renewable energy modeling

  • Energy storage

2. Grid integration process and industry regulations

  • Discussions on National Electricity Rules (NER)

  • Introduction to the Dynamic Model Acceptance Tests (DMAT)

  • Challenges and opportunities in generator grid connection

  • Examples of PV farm modelling in PSSE and PSCAD

3. Advanced network and control in power system

  • Multi-terminal DC network

  • Key challenges in self-healing of converter modeling

  • Steady state analysis and time domain results investigations on PSCAD

4. Research with a focus on Australian Industry problems.

  • Applying NER rules into research study

  • Understanding system strength

  • Integrating weak grids into research test system

 Dr Ke Meng is a Senior Lecturer at School of Electrical Engineering and Telecommunications, University of New South Wales. He has been involved in renewable energy research for over ten years. He serves as editor of IET Renewable Power Generation, member of Journal of Modern Power Systems and Clean Energy editorial board, and member of Electric Power Components & Systems editorial board.

Dr. Nahid is a Power System Engineer at Australian Energy Market Operator (AEMO) and Researcher at UNSW. His area of expertise involves synchronous and asynchronous systems integration to Australian grid and currently working in AEMO on complete grid modeling of Australian grid, also known as National Electricity Market (NEM) on advanced digital twin platform. His expertise also involves advanced control methods & technical issues under renewable energy integration, such as weak grid, MTDC, converter modeling, self-healing etc. at UNSW. With his 6 years’ experience in industry, he had worked in GHD, Australia and Abu Dhabi National Oil Company (ADNOC), UAE as Power Systems Engineer before joining AEMO. Nahid completed his PhD on advanced control methods of multi-microgrid from The University of Sydney. He completed his MSc in renewable energy integration at The Petroleum Institute, UAE and BSc in electrical engineering from Islamic University of Technology (IUT), Bangladesh.

Presenters