Tutorial 1

Title: DC Green Grid as Green Energy Production

Speaker: Musse Mohamud Ahmed

Musse Mohamud Ahmed joined the Department of Electrical & Electronics Engineering (EEE), Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), in July 2016 as a Professor. He currently serves as a consultant for senior power engineer for the World Bank project related to AC Extra High Voltage Transmission Interconnections. With a Ph.D. from Universiti Teknologi Malaysia (UTM) in 2000, he held the several positions in some of Institutions of Higher learning (IHL) such as, MMU as a Lecturer (200-2002); KUTM/UTeM Melaka as Lecturer, Senior Lecturer, and as Associate Professor and as Deputy of Postgraduate and Research & Development at the Faculty of Electrical Engineering (2002-2009); and an Associate Professor at the Kulliyyah of Engineering, International Islamic University Malaysia (IIUM) from 2009 to 2016. He is an IEEE senior member with 39 years of industry and teaching experience. His expertise encompasses Smart Grid Technology, Digital Substations, Large Power System Operation and Control, and Renewable Energy, Energy Management, IOT based applications to power and energy areas among others. He has authored 100+ articles and proceedings, along with books on Distribution Automation, Energy Efficiency, and Solar Energy Applications. He supervised over 30 postgraduate students, managed National and International research projects, and has been a prominent figure in IEEE-PES Malaysia for 22 years. He conducted many Electrical Engineering and Energy Courses for professional engineers in diverse geographical locations.

Abstract

Power Transmission lines are either designed in AC or DC according to the requirement by the specific requirement, or infrastructure owner preference such as national grid system owner or state level grid system owner. In Malaysia all the transmission line systems are in AC systems while tie lines connected to either Thailand or Singapore are DC tie lines as interconnection lines. This tutorial proposes a new DC line system that could be used to supply DC sources based renewable energy as green energy transmission line carrier.  to take care of all the newly quantified renewable energy sources in in Malaysia and elsewhere in the world as alternative transmission to the already existing AC transmission line systems.

Why Green Grid is Necessary?

The reason why this new DC transmission line system is proposed is summarized as:

  1. To get an alternative DC transmission line system that may tackle future Green Energy Grid for urbanization mega project such as LRT/MRT, Monorails, transportation, hydrogen infrastructure that solely uses DC system.
  2. Electric Vehicle Station (EVS) which uses DC storage system.
  3. To provide DC system to the existing distributed renewable energy so that they can inject to their DC consumers located in remote areas in Malaysia specially in Sarawak State and Sabah States.

The Main Contents of the Tutorial

The tutorial may contain the following subtopics:

  1. Introduction
  2. Why Green Grid is needed.
  3. Comparison between DC and AC after AC-DC Conversion during DC based infrastructure projects.
  4. Where to go from here
  5. Points to nurture
  6. Q&A

Tutorial 2

Title: Addressing challenges and opportunities for power system planners and system operators through enhanced power system modelling

Speaker: Jingwei Lu

Jingwei Lu is currently working in the Operations department of the Australian Energy Market Operator (AEMO), as a principal power system engineer. He is specialised in power system modelling and analysis, with interests spanning from power system planning, generator grid connection and compliance assessment, operation incident investigation and root cause analysis. He has 16 years of industry experience with international engineering consultancies, utilities, and system operators, where he has been involved in multiple generation connection and commissioning projects, transmission system planning activities, large scale power system model development and validation practice, operational analysis including emergency response plan development, and regulatory framework development and amendments, in UK and Australia. He has co-authored several articles for CIGRE Science & Engineering journals, and IEEE PES journal, in the field of power system modelling and analysis.

Abstract

There is a global megatrend of power system decarbonization, and each participating country of relevant climate treaties is experiencing this megatrend in its own unique way, while sharing a common feature: large-scale, rapid uptake of inverter-based resources, potentially inverter-based loads too. The increasing penetration of inverter-based devices are slowly shifting the power system dynamics, by displacing the existing fossil-fuel based synchronous generators from the electricity transmission systems, and introducing more versatile loads and distributed energy resources at the customers’ end.

The transition presents a once-in-a-lifetime opportunity for our generation to build greener and more intelligent power systems for generations to come. However it is a transition, not a revolution, and the existing power systems must keep working until the new ones are built and commissioned, which cannot be done hastily. As the transition progresses, the equilibrium of the existing power system is breaking down, and new vulnerabilities are being exposed, and it is the job of power system engineers and researchers to ensure that we have a smooth transition. Despite the new terminologies, the two core aspects of power system development have not changed, which are power system planning and operation, and the tutorial will touch base on both aspects.

The power system planning is about finding the most feasible, achievable, and economical option for sourcing electricity supplies, and power system expansion. However, there are too many unpredictable factors in today’s world, and the scenario planning has been a widely adopted approach for tackling these uncertainties. The tutorial will briefly discuss the scenarios considered in AEMO’s Integrated System Plan (ISP), which is a long-term planning document for the Australian NEM power system development for the next 20 years and beyond.

Despite the best effort of the power system planners, there is a tendency for surprises to emerge during power system operation. The tutorial will share the presenter’s experience in dealing with operational incidents and emergencies, and will focus on the importance of proper power system modelling and analysis in addressing these incidents. In addition to these response measures, having certain preventative measures would be beneficial for power system operators to identify and quantify the risks, and take appropriate actions to minimize the likelihood of a major operational incident. The presenter wishes to discuss with the audience on potential methods to implement such preventative measures, including the leverage of artificial intelligence for this purpose.