Title: Technical Requirements for Integrating Distributed Energy Resources

Abstract: The transition of the electricity industry into a low-carbon-intensity sector has led to the global trend of a steady increase in the penetration level of distributed energy resources (DERs). These DER systems are generally small units connected in power distribution systems, different from the traditional large generation facilities in bulk electrical systems. While the integration of these DER units in electric grids has brought significant challenges for grid operation, the tremendous potential of DERs in supporting power systems with flexible resources has not been fully explored by utilities. This presents significant opportunities for advancement in technologies for DER management and controls, enabled by power electronic technologies. This presentation focuses on the recent advancements in DER markets in the context of power system transition, and the technical requirements for integrating DERs into power systems. An overview of the evolution in interconnection standards over the past 25 years reveals the progress of technical requirements for DERs, which forms a major part of the presentation based on the presenter’s technical experience working on DER integration. As power electronic technologies are critical to system integration, performance enhancement and grid operation support involving DER systems, the pursuit for high performance and functionality has driven the advances in power converter technologies, including components, topologies, controls, and system support functions. Part of the presentation is based on the extensive review of the state-of-the-arts technologies conducted by the IEEE International Technology Roadmap of Power Electronics for Distributed Energy Resources (ITRD).

Date: June 10, 2023 | Saturday

Time: 08:50-09:25 AM

Venue: Grand Ballroom

Title: Advanced Wide-Band-Gap Power Electronics Conversion for Renewable Energy Power Systems

Abstract: There is ever-increased demand for Renewable Energy Power Systems with higher efficiency, higher power density, and better dynamics. The Wide-Band-Gap（WBG）device helps push the applications of soft-switching technology to various power electronics conversions. The combination of Wide-Band-Gap devices and advanced power electronics conversion may significantly enhance the performance of Renewable Energy Power Systems. A generic Edge-Align Pulse-Width-Modulation (EA-PWM) and control for soft-switching three-phase conversion systems are introduced. It is suitable for various Renewable Energy Power Systems such as PV and wind power, battery energy storage, Fuel-Cell system, solid-state transformer, etc. Implementation and Experimental results of a soft-switching SiC MOSFET grid inverter and SiC MOSFET three-phase BTB converter are introduced.

Date: June 10, 2023 | Saturday

Time: 09:25-10:00 AM

Venue: Grand Ballroom

Title: Small-Signal Sequence Immittance Theory and Applications

Abstract: As the development of carbon-free electricity becomes a global movement and more and more countries commit to achieving carbon neutrality by 2050-2060, it is clear that future power systems will be based on converters. Developing and operating such a converter-based power system face many challenges, one of which is system stability. The fast control of power electronics introduces high-frequency dynamics and create new stability problems that are not considered in traditional system studies and require new modeling and analysis methods and tools. Small-signal sequence immittance theory is developed to meet this practical need and has seen many successes in solving real-world stability problems. As a result, a large body of knowledge and a wealth of practical experiences have been developed. Immittance-based frequency-domain modeling also enables design engineers to optimize power converter and their control design for stable operation with/in the grid. New immittance-based performance specifications and system study procedures/tools are also being developed to ensure system stability.
This talk reviews the status of the theory and application of immittance-based frequency-domain methods, and introduces the latest development for application in large power grids.

Date: June 10, 2023 | Saturday

Time: 11:15-12:00 AM

Venue: Grand Ballroom

Title: Innovations in Power Electronics Technologies for Distributed Energy Resources

Abstract: Today's distributed energy resources (DER) are experiencing a rapid progression, which drives the development of advanced power electronic converter topologies, operational strategies, and the adoption of wide bandgap (WBG) devices for higher efficiency, reliability and smaller footprint. The innovations in power electronics technologies a pivotal role in tackling challenges related to energy management, system reliability, and efficient energy conversion. This presentation will concentrate on recent advancements addressing these challenges, encompassing aspects such as converter topology, design, and advanced control methods. It includes topics like model predictive control and multi-rate-based techniques, as well as explore the creation of innovative topologies and modulation approaches inspired by graph theory-based methodologies. Innovations on power electronics in the above aspects are key enhance the overall performance of DER and grid integration.

Date: June 11, 2023 | Sunday

Time: 10:20-10:55 AM

Venue: Grand Ballroom

Title: Power Electronics for a Smart Energy Management: from Smart Transformer to 100 % Electronic Grid by Means of Grid-Forming and Talkative Power Conversion Technologies

Abstract: The goal to decarbonise the energy production and use especially in the transportation sector is challenging the modern power system. Power electronics is now playing a different role respect to 20 years ago, taking directly responsibility for the electric grid, eventually evolving towards an electronic grid. Power converters will play a grid-forming role being not only in charge of adjusting voltage level and create different AC and DC supply but also to control generation, loads and power flow among them. The Smart Transformer, which is a fundamental node of the future electronic grid, is now in the process to be standardized as for IEEE and CIGRE initiatives. On the other hand the energy management functionality of power-electronic-based devices as the Smart Transformer needs communication to get information from sensors and send command to actuators and better manage the future dynamical reconfigurable meshed and hybrid grid and its protection. Power electronic can also provide communication functionalities embedding data directly in the Pulse Width Modulation also thanks to Wide Band Gap devices which allows higher switching frequency still with limited losses. This will open a new era for networked systems experiencing hyper-connectivity at different levels but still using the same device, the power electronics converter, where the conversion architecture and the Pulse Width Modulation are now re-thinked in a new and exciting perspective bridging two different realms of knowledge: power conversion and communication.

Date: June 10, 2023 | Saturday

Time: 10:40-11:15 AM

Venue: Grand Ballroom

Title: The Quest for a Fully Autonomous Microgrid Incorporating DERs and a Possible Solution

Abstract: For more electronic future power systems, the coordinative control of a microgrid incorporating distributed energy resource (DER) converters is to ensure the system voltage to be within a nominal magnitude/frequency range and adequate output power sharing among all these energy sources, and at the same time to guarantee fast and smooth transfer of the microgrid operation between islanded mode and grid-connected mode. This is very often required to be realized through fully autonomous control where each source converter or the transfer switch is controlled by its own without getting or sensing any information from others or a center controller so that a higher reliability and an easy-to-implement plug-and-play feature could be achieved. The requirement for a fully autonomous grid-organizing framework has been well fulfilled and has made a significant benefit for today’s power systems, but will be a really critical challenge for future’s more electronic power systems with microgrid being a possible form. A whole-new concept device, Flexible Transfer Converter (FTC), is proposed to enable the fully-autonomous coordinative control of a microgrid. Through the FTC, the interfacing power of the micro-grid with the large grid can also be continuously adjusted; soft transfer can be achieved; and the speed and smoothness of the transfer can be dramatically improved, while all of these can not be realized by existing operation-mode-transfer techniques fundamentally.

Date: June 11, 2023 | Sunday

Time: 08:30-09:05 AM

Venue: Grand Ballroom

Title: Development Direction of New Power Distribution Systems Based on Carbon Peaking and Carbon Neutrality Background

Abstract: The report will comprehensively analyze the development opportunities of power distribution systems in the context of China's carbon peaking and carbon neutrality goals. It will examine the challenges faced by current power distribution systems from the perspectives of demand, architecture, technology, and equipment. Furthermore, the report will analyze and provide the development trends, recommendations, and prospects for new power distribution systems.

Date: June 11, 2023 | Sunday

Time: 09:05-09:40 AM

Venue: Grand Ballroom

Title: Power Electronic Based Stabilizing Techniques Applied for Power Girds with High Penetration of Renewable Resources

Abstract: To ensure the consumption of renewable resources, this leads to the lack of inertia as well as reactive power in new power systems. When the new power system is disturbed, the frequency transient presents the characteristic of "large slope", which is easy to trigger the shutdown of new energy units and deteriorate the frequency stability. The new power system needs equipment that can provide rapid support capacity to increase the system inertia. At the same time, the new power systems, with the problem of that the lack of reactive power and the “rapidity and accuracy" of reactive power control, needs to address the issue of dynamic reactive power support and the improvement of static voltage stability margin. To address these problems, we propose the use of Modular Multilevel Converter based STATCOM with power intensive energy storage (SSC PLUS). The device achieves decoupled active and reactive power control and is able to provide fast inertia support and reactive power support, while having high economic efficiency and ensuring safe and stable operation of the power system.

Date: June 12, 2023 | Monday

Time: 09:05-09:40 AM

Venue: Riverview 1+2

Bio:Xinbo Ruan (Fellow, IEEE) received the B.S. and Ph.D. degrees in electrical engineering from Nanjing University of Aeronautics and Astronautics (NUAA), Nanjing, China, in 1991 and 1996, respectively. In 1996, he joined the Faculty of Electrical Engineering Teaching and Research Division, NUAA, where he became a Professor in the College of Automation Engineering in 2002. From August to October 2007, he was a Research Fellow in the Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Hong Kong, China. From March 2008 to Sep. 2011, he was also with the School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, China. He is the author or co-author of 13 books and more than 300 technical papers published in journals and conferences. His main research interests include resonant and soft-switching power converters, power converter topologies and control, grid-connected converters and system for renewable energy, modeling and stability of power converters, and envelop tracking power supply. Prof. Ruan was a recipient of Sustainable Energy Systems Technical Achievement Award from IEEE Power Electronics Society in 2022, the Delta Scholarship by the Delta Environment and Education Fund in 2003 and was a recipient of the Special Appointed Professor of the Chang Jiang Scholars Program by the Ministry of Education, China, in 2007. From 2005 to 2013, and since 2017 again, he serves as Vice President of the China Power Supply Society (CPSS). From 2014 to 2016, he served as a Vice Chair of the Technical Committee on Renewable Energy Systems within the IEEE Industrial Electronics Society. Currently, he serves as an Editor for IEEE JOURNAL OF EMERGING AND SELECTED TOPICS ON POWER ELECTRONICS, and an Associate Editor for IEEE TRANSACTIONS ON POWER ELECTRONICS, IEEE Open Journal of the Industrial Electronics Society, IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS – II. He was the General Chair of IPEMC-ECCE Asia 2020 and the General Secretary of IPEMC-ECCE Asia 2009, a Technical Program Committee Chair of the IEEE 7th Annual Energy Conversion Congress and Exposition, and a Tutorial Committee Chair of the IEEE 12th Annual Energy Conversion Congress and Exposition.

Date: June 11, 2023 | Sunday

Time: 10:55-11:30 AM

Venue: Grand Ballroom

Bio:Dr. Marta Molinas is currently a Professor with the Department of Engineering Cybernetics, Norwegian University of Science and Technology, Trondheim, Norway. She received the M.E. degree from Ryukyu University, Nishihara, Japan, in 1997, and the D.Eng. degree from the Tokyo Institute of Technology, Tokyo, Japan, in 2000. Dr. Molinas was a Guest Researcher with the University of Padova, Italy, in 1988. From 2004 to 2007, she was a Postdoctoral Researcher with the Norwegian University of Science and Technology (NTNU), Trondheim, Norway, and from 2008 to 2014, a Professor with the Department of Electric Power Engineering with the same university. She has been a visiting scholar at Columbia University in 2014 and invited fellow in Japan with a JSPS Invitational Fellowship in 2008 and in 2022. Her research interests include stability of power electronics systems, harmonics, instantaneous frequency, and nonstationary signals from the human and the machine. Prof. Molinas is an Editor for the IEEE Journal JESTPE, IEEE Trans. Of Energy Conversion, and Advisor to the Board of IEEE Electrification Magazine. She is Associate Editor for the IEEE PELS Transactions, and IEEE JESTIE. She has been an AdCom Member of the IEEE Power Electronics Society from 2009 to 2011. Dr Molinas served as general chair of IEEE COMPEL in 2016. She is a Fellow of IEEE.

Date: June 12, 2023 | Monday

Time: 08:30-09:05 AM

Venue: Riverview 1+2