News
(Jun. 2024) 하지훈 박사과정 학생, 2024 이공분야학술연구지원사업(박사과정생연구장려금지원사업, 5천만원/2년) 선정!
[과제명] 태양광 수용성 증대를 위한 태양광 실시간 고장 진단 및 최적 제어 알고리즘 개발 및 검증 (Development and Lab-scale Test of PV Real-time Fault Diagnosis and Optimal Control for Increasing PV Penetration)
[연구내용] (1차년도) 태양광 발전기의 딥러닝 기반 실시간 고장 감지 및 진단 기술개발 및 PHILS 검증을 통한 알고리즘 고도화, (2차년도) 계통 안정화를 위한 계통운영자 지령에 따른 유연한 전력 지점 추종(FPPT) 기술개발 및 PHILS 검증을 통한 알고리즘 고도화
Congratulations to Ph.D. student Jihoon Ha for being selected for the 2024 Research Scholarship awarded by the National Research Foundation of Korea! His groundbreaking project on real-time fault diagnosis and optimal control for photovoltaic systems has secured a 50 million KRW grant over two years. Well done, Jihoon!
Jihoon Ha received his B.S. degree in electrical engineering from Kyungpook National University, Daegu, South Korea, in 2020, and his M.S. degree in electrical engineering from the Pohang University of Science and Technology, Pohang, South Korea, in 2022. He is currently pursuing his Ph.D. degree in electrical engineering at the same university. In 2023, he was a Visiting Researcher at the University of Michigan–Dearborn, Dearborn, MI, USA. His research interests include renewable energy sources, fault diagnosis, and power system control. Enjoy his terrific study published in IEEE Transactions on Instrumentation and Measurement here.
(Jan. 2024) We are pleased to announce that our Ph.D. candidate, Jun-Soo Kim, has been awarded the Excellent Award by the Department of Electrical Engineering at POSTECH. This recognition comes as a result of his impressive research contributions, including publications in TPWRS, TSE, and TIE, all within just one year. Congratulations to Jun-Soo on this achievement!
Jun-Soo's academic background includes a B.S. degree in Electrical Engineering from Kyungpook National University, obtained in 2019, and an M.S. degree from POSTECH in 2021. His research interests lie in the areas of HVDC converters and power systems, deloaded operation of renewable energy sources, and data-driven control design.
During his time in our lab, Jun-Soo has led various research and demonstration projects. Notably, he is currently working on a project focused on the optimal operation of high-voltage direct-current (HVDC) systems for grid frequency and voltage control, funded by KEPCO. His work continues to contribute significantly to the field of electrical engineering.
(Dec. 2023) Dr. Ye-Eun Jang will join the Electronics and Telecommunications Research Institute (ETRI) as a Senior Researcher, starting from next February. A big congratulations!
She earned her B.S., M.S., and Ph.D. degrees in Electrical Engineering from Pohang University of Science and Technology (POSTECH) in 2016, 2020, and 2024, respectively. From 2016 to 2018, she worked as a software engineer at Samsung Electronics and then joined our lab in 2018. Her research is centered on the optimal operation of nonlinear power systems using machine learning algorithms, with a particular focus on power system reliability, building energy efficiency, and multi-energy system operation.
Dr. Jang was undoubtedly one of our most outstanding students. She successfully led several academically intensive projects, which led to the submission and publication of more than three papers in IEEE journals.
Furthermore, she was the recipient of the NRF Research Grant for Ph.D. Students, the Excellent Award from the POSTECH Graduate Student Research Competition, and the POSTECHIAN Fellowship. Once again, a big congratulations to Dr. Jang on her impressive achievements!
(Dec. 2023) Dr. Prasanth Ram J has been promoted to the position of Research Professor in the Department of Electrical Engineering at POSTECH, joining the esteemed faculty of our university. His promotion is a significant achievement in his academic career, reflecting his extensive work and publications in the field of PV system control and O&M, which have been featured in several prestigious journals. This appointment is also noteworthy as, at POSTECH with us, he will contribute to the enhancement and recognition of POSTECH's academic reputation and ranking among global universities, demonstrating the impact of his academic contributions.
(Oct. 2023) Both Dr. Youngjin Kim and Dr. Prasanth Ram J were featured in the list of the 2023 World’s Top 2% Researchers again.
Scientists are classified into 22 scientific fields and 176 sub-fields. Metrics with and without self-citations and ratio of citations to citing papers are given. Field- and subfield-specific percentiles are also provided for all scientists who have published at least 5 papers. The selection is based on the top 100,000 scientists by c-score (with and without self-citations) or a percentile rank of 2% or above.
(Oct. 2023) Our paper on model predictive control of hydrogen energy storage systems has been selected as one of the most popular papers in IEEE Transactions on Energy Conversion in Aug. 2023.
We will further develop the study with experimental verification this year!
(Sep. 2023) Our manuscript, focused on the design of Series-Parallel Overlapping Sub-array (SOPS) especially within the context of photovoltaic (PV) power generation under diverse shading patterns in soiled conditions, has been accepted for publication in IEEE Transactions on Power Electronics .
We proposed and examined the SOPS design concerning its capability in power generation and energy conservation, alongside evaluating the payback on the additional capital expenditure (CAPEX) invested.
The paper analyzes the effects of various shading patterns on PV power generation under soiled conditions, verifying the potential of the proposed method to mitigate performance degradation issues in soiled or shaded PV arrays.
(Sep. 2023) Opened our new office for a group of our graduate students, situated in the ChangeUp Ground building in Pohang. With modern facilities, it offers a conducive environment for students to concentrate on their coursework and research .
Next April, we will also open a new office for our graduate students near Dongtan Station in Gyeonggi-do. This location offers them easy access to research opportunities with government agencies and companies, while staying in Seoul after their coursework. Our students can conveniently have both online and in-person discussions with other lab members.
(Sep. 2023) Collaboration with Hyundai Motor Company produced a US patent as our student (Jonghyun Park) examined innovative ways using AI and numerical optimization to predict and control the temperatures of EV battery and motor.
(Aug. 2023) 김영진 교수, 2023년도 한국연구재단 국책연구본부 신규 전문위원(분야: 전력 IT)으로 선임
기간: ~ 2025.08.31
역할
소관 분야 학술 및 연구개발 지원사업의 연구과제 평가후보자 추천
소관 분야 학술 및 연구개발 지원사업의 온라인 평가결과 검토
소관 분야 학술 및 연구개발 지원사업의 기획에 관한 사항
소관 분야 학술 및 연구개발 지원사업의 예산 배분방안 수립에 관한 사항
소관 분야 연구수요, 기술예측, 연구동향 등 조사·분석에 관한 사항
기타 소관 분야의 관련 업무 지원 등
(Aug. 2023) Dr. Prasanth Ram J has achieved a significant milestone in his academic journey. His exceptional contributions and dedication to the Department of Electrical Engineering at POSTECH have earned him a distinguished position among the top three postdoctoral researchers. In recognition of his remarkable achievements, Dr. Prasanth Ram J has been honored with the prestigious BK Fellowship, spanning a one-year duration.
(May. 2023) Invited to the World Climate Industry Expo (WEC) to present our work on (1) Digital Twin Platform and (2) P2P Energy Transaction Platform with the fruitful collaboration with Inha University, Raon Friends, and Pluxity
Funding resource: National Research Foundation of Korea
$752K (approx. KRW 0.9B) (06.2019 - 12.2023)
(May. 2023) Dr. Kim was invited as a member of the nationwide initiative for Carbon Free Energy (CFE) in Korea.
In response to the urgent need to drive rapid decarbonization across the global economy, a group of energy buyers, energy suppliers, governments, system operators, solutions providers, investors and other organizations has joined together to accelerate the decarbonization of electricity grids by adopting, enabling, and advancing 24/7 Carbon-free Energy (CFE).
24/7 Carbon-free Energy (CFE) means that every kilowatt-hour of electricity consumption is met with carbon-free electricity sources, every hour of every day, everywhere. It is both the end state of a fully decarbonized electricity system, and a transformative approach to energy procurement, supply, and policy design that is critical to accelerating its arrival.
The 24/7 Carbon-free Energy Compact is a set of principles and actions that stakeholders across the energy ecosystem can commit to in order to drive systemic change. Due to the remarkable ongoing progress in clean energy and enabling technologies, the transition to a fully decarbonized electricity sector is possible. Achieving it will require a concerted and targeted effort by all stakeholders to develop and scale the energy policies, technologies, procurement practices, and solutions to transform the broader energy ecosystem to enable rapid and cost-effective achievement of 24/7 CFE for all.
(Mar. 2023) Our study with Hyundai Samho Heavy Industries on a real-world shipboard microgrid with a grid-forming inverter
The successful collaboration between our team and Hyundai Samho Heavy Industries resulted in a breakthrough in adaptive observer-based control of a real-world grid-forming converter-interfaced shaft generator in a shipboard microgrid for commercial use. We made it possible to effectively manage the fluctuating power demand and variable energy sources that are inherent to marine environments.
(Dec. 2022) 김영진 교수, 국가과학기술자문회의 에너지 /환경 분야 전문위원으로 선발
국가과학기술심의회에 상정되는 과학기술 및 R&D 안건 사전검토
핵융합, 원자력, 에너지, 자원분야 - 기상, 환경 기술 분야
정부 R&D 투자방향 및 기술 분야별 투자 전략 마련
(Nov. 2021) Our paper on optimal control of hydrogen energy storage systems has been accepted for publication in IEEE Transactions on Energy Conversion.
Developing accurate physics-based and data-driven models of PEM-type hydrogen energy storage systems, including electrolyzers, hydrogen tanks, and fuel cells, to provide ancillary services to microgrid frequency regulation in real time
Experimentally analyzing the optimal control performance under the condition of communication time delays
Applied to plug-and-play of hydrogen energy storage systems and sector coupling of energy networks
(Oct. 2022) Selected as the Best Research Project among the 50+ projects funded by Korea Electric Power Research Institute for the last three years
Topic: Optimal real-time control of HVDC-linked power grids
PI: $199K (approx. KRW 0.2B) (05.2019 - 04.2022)
In this project, we made great research outcomes with two IEEE TPWRS papers and two other SCI(E) papers.
Enjoy reading our papers on HVDC system control and protection:
[IEEE TPWRS] Decentralized robust frequency regulation of multi-terminal HVDC-linked grids;
[IEEE TPWRS] Optimal secondary control to suppress voltage fluctuations in an HVDC-linked wind farm grid;
[IEEE Access] Optimal data-driven control of an LCC HVDC system for real-time grid frequency regulation;
and [Energies] Analyses and comparisons of generic and user writing models of HVDC system considering transient DC current and voltages.
(Oct. 2022) Dr. Youngjin Kim and Dr. Prasanth Ram J were featured in the list of the 2022 World’s Top 2% Scientists released by Stanford University in the Single-year track.
A publicly available database of top-cited scientists has been created to provide standardized information on citations, h-index, co-authorship adjusted hm-index, citations to papers in different authorship positions and a composite indicator.
Scientists are classified into 22 scientific fields and 176 sub-fields. Metrics with and without self-citations and ratio of citations to citing papers are given. Field- and subfield-specific percentiles are also provided for all scientists who have published at least 5 papers. The selection is based on the top 100,000 scientists by c-score (with and without self-citations) or a percentile rank of 2% or above.
(Aug. 2022) Our paper on optimal real-time control of offshore wind farm voltages has been selected as one of the 50 most frequently accessed documents for IEEE Transactions on Power Systems in July, 2022.
(Jul. 2022) Our postdoc and Ph.D. candidates have been selected for the recipients of Best Oral Award in the International Council on Electrical Engineering (ICEE) Conference 2022. Here are the topics and titles of their "FIVE" papers.
Demand Response: Virtual Battery Modeling of Thermostatically Controlled Loads with Parameter Uncertainties (Seungjun Hahm)
Energy Storage: Optimal Data-driven Control of Hydrogen Energy Storage Systems for Real-time Grid Frequency Regulation in an Islanded Microgrid (Gi-Ho Lee)
HVDC: Optimal Secondary Control for Frequency Regulation of MTDC-linked AC Grids (Jun-Soo Kim)
PV: Reconfigured Photovoltaic Model to Facilitate Maximum Power Point Tracking for Micro and Nano-Grid Systems (J. Prasanth Ram)
Microgrid: A Self-reliable, Open-loop DC Micro-grid System Assisted by Efficient Energy Management System for Remote Area Electrification (J. Prasanth Ram)
(May. 2022) Our Ph.D. candidate, Ye-Eun Jang, has received an NRF research grant for Ph.D. students. It is one of the most prestigious grants given to only a few Ph.D. students in all areas of science and engineering, encouraging them to lead advances in the mission of research. This grant will fund her studies on AI-based optimal operation of multi-energy systems for 2050 carbon neutrality. Congratulations!
She received the B.S. and M.S. degrees in Electrical Engineering at Pohang University of Science and Technology (POSTECH) in 2016 and 2020, respectively. She worked for Samsung Electronics as a software engineer from 2016 to 2018, and joined our lab in 2018. Her research interests include the reliability of power systems, the energy efficiency in smart buildings, and AI applications to optimal multi-energy system operation.
(Apr. 2022) Dr. Kim has been appointed as the Jisan Chair Professor at POSTECH for his academic excellence.
(Apr. 2022) Further improved our PHILS (power hardware-in-the-loop simulation) setup for the projects on Energy Cloud, Mobile Green Hub Station, LCC/VSC HVDC System, AC/DC Protection Relays, and PV Health Management, which includes:
Workstation for data visualization and analysis
Real-time simulator (RTDS) for power grid modeling
Power amplifiers to increase time-varying voltage and current signals
PV emulator and prototype grid interfaces
Motor-and-generator setup with an encoder, a torque meter, and a variable frequency drive
Li-ion battery
Single- and three-phase AC loads
(Apr. 2022) Invited as the Guest Editor for the Special Section in Energy Reports (IF: 6.87)
(Apr. 2022) Invited as the Guest Editor for the Special Section in IEEE Transactions on Power Delivery (IF: 4.131)
Call for Paper (CFP) on "Advances in Research and Applications of Power Electronics in T&D Systems"
(Mar. 2022) Dr. Jae-Young Park will join the Department of Energy ICT Convergence Research at the Korea Institute of Energy Research as a senior researcher, starting from this April. A big congratulations!
He joined our lab in 2017 and received the Ph.D. degree in the Department of Convergence IT Engineering at Pohang University of Science and Technology in 2022. His research interests include power network reconfiguration, renewable energy sources, and grid-forming power converters.
He was always one of our best students. He led several academic-intensive projects successfully and got three papers published in high prestigious journals. Please find his first-authored papers in IEEE Transactions on Smart Grid (1, 2) and IEEE Transactions on Power Systems (3).
He also participated in many collaborative studies with our colleagues. Enjoy his co-authored papers published in IEEE Transactions on Power Systems (4), IEEE Transactions on Instrumentation and Measurement (5), IEEE Transactions on Industry Applications (6), and Energies (7, 8).
Moreover, he received four best paper awards from KIEE conferences in 2021, 2020, and 2019.
(Mar. 2022) Our M.S. student, Gi-Woong Han, received the Scholarship from Korea Electric Power Corporation for his academic achievements during the undergraduate and graduate studies.
He received the B.S. degree in Electrical Engineering at Pohang University of Science and Technology (POSTECH) in 2021.
In our lab, he has led two research projects mainly on optimal power flow in AC-DC power grids and optimal coordination of energy storage units and combined heat-and-power turbines, funded by KEPCO E&C and SK E&S, respectively. During his first year, he already applied for a patent about a new modularized platform for two-stage optimal operation of energy storage systems.
(Jan. 2022) Our Ph.D. candidate, Ye-Eun Jang, received the Excellent Award from the Graduate Student Research Competition in the Department of EE at POSTECH for her achievements (one TSG paper and two patents) only within 1.5 years. A big congrats to her!
She received the B.S. and M.S. degrees in Electrical Engineering at Pohang University of Science and Technology (POSTECH) in 2016 and 2020, respectively. She worked for Samsung Electronics as a software engineer from 2016 to 2018, and joined our lab in 2018. Her research interests include the reliability of power systems, the energy efficiency in smart buildings, and AI applications to optimal power and gas flows.
After joining our lab, she has led several research and demonstration projects including a current project on optimal operation of heating, ventilation, and air-conditioning (HVAC) systems for applications to ancillary service provision of virtual power plants, funded by KERI.
(Jan. 2022) Selected for the yearlong research project on analysis and control of a powertrain system including an engine-mounted generator for propulsion, funded by Hyundai Heavy Industries,
(Dec. 2021) Selected as a Topic Chair of ECCE 2022 (No of Attendees: Approx. 2200) in the area of "Smart Grid & Utility Applications", including the following sub-topics:
(B01) Renewable energy grid integration; (B02) Distributed resources and micro-grids; (B03) HVDC and FACTS; (B04) DC distribution and DC micro-grids; (B05) AC distribution and AC micro-grids; (B06) Electronic transformer and other grid services; (B07) V2G and G2V; (B08) Grid stability and power quality; (B09) Smart buildings and appliances; and (B99) Other topics in smart grid and utility applications.
Since the first edition in 2009, ECCE has established a solid international reputation as the world’s leading technical conference and exhibition for electrical and electromechanical energy conversion research and innovation. ECCE is exceptional in its emphasis on multi-disciplinary energy conversion technology, presenting novel solutions in applied integrated systems as well as innovations in individual energy conversion components. ECCE provides a tremendous opportunity to electrical engineers working in the many technical fields related to energy conversion to meet their peers, establish productive collaborations, exchange ideas, advance the state of the art and make a positive impact on society and the environment.
(Dec. 2021) Selected for the yearlong research project on electric power facility for a semiconductor factory, funded by Samsung Electronics,
(Nov. 2021) Selected for the yearlong research project on the development of DERMS applications, funded by SK E&S.
(Nov. 2021) Selected for the 3-year research project on the development of MMC-type energy storage systems based on Green Hub Station with renewable energy resources, funded by Korea Institute of Energy Technology Evaluation and Planning.
(Nov. 2021) Our paper on optimal parameter estimation of organic PV cells has been accepted for publication in IEEE Journal of Photovoltaics (in IEEE Electron Device Society)
A new strategy for modeling an equivalent electrical circuit to simulate the nonlinear operational characteristics of PV cells, which still remains as a challenging task due to the difficulty in estimating unknown parameters in the transcendental current equation.
(Nov. 2021) Our paper on HVDC system modeling and analyses has been accepted for publication in Energies.
(Oct 2021) Featured in the list of the 2021 World’s Top 2% Scientists released by Stanford University in the Single-year track.
Citation metrics are widely used and misused. A publicly available database of over 100,000 top-scientists has been created to provide standardized information on citations, h-index, co-authorship adjusted hm-index, citations to papers in different authorship positions and a composite indicator.
Scientists are classified into 22 scientific fields and 176 sub-fields. Metrics with and without self-citations and ratio of citations to citing papers are given. Field- and subfield-specific percentiles are also provided for all scientists who have published at least 5 papers. The selection is based on the top 100,000 by c-score (with and without self-citations) or a percentile rank of 2% or above.
The version 2 dataset is based on the May 06, 2020 snapshot from Scopus and is updated to citation year 2019 available at https://doi.org/10.17632/btchxktzyw.2. This version (3) is based on the Aug 01, 2021 snapshot from Scopus and is updated to citation year 2020.
(Oct 2021) Invited to join the inaugural editorial board for Energy Conversion and Economics of IET
Energy Conversion and Economics is a Gold Open Access journal co-published by the Institution of Engineering and Technology (IET) and the State Grid Economic and Technological Research Institute (SPERI) that publishes original and review articles on various aspects of energy generation, energy conversion, energy transition, energy storage, energy consumption, and electrified transportation, as well as energy policies, energy economics, energy management, energy markets, energy efficiency in comprehensive energy systems with various scales and coverage.
(Oct. 2021) Our paper on optimal voltage control in a wind farm has been accepted for publication in IEEE Transactions on Power Systems
Developing a coordinated control strategy of an high voltage DC (HVDC) system and voltage source converters (VSCs) of wind turbines (WTs) for optimal real-time regulation of voltages at the points of common coupling and connection and WT output terminals.
Developing a data-driven model of an HVDC-linked wind farm and reducing the model complexity while still reflecting its dynamic operating characteristics (l2-norm error less than 10^(-5))
(Sep. 2021) Our paper on evaluation of digital protection relays has been accepted for publication in IEEE Transactions on Instrumentation and Measurement (IF: 4.016, Instruments & Instrumentation: 11/64, 83.59%)
Developing a new test procedure for comparative evaluation of the dynamic performance of digital protection relays with respect to their response speed and consistency and verifying the procedure with a real-world experimental setup with RTDS, power amplifiers, and relays.
This study was supported by Korea Electrotechnology Research Institute (KERI) at Ansan.
(Aug. 2021) Started working as an associate editor for IEEE Power Engineering Letters
This is an honor given to only a few editors and associate editors for IEEE Transactions within the Power and Energy Society.
Power Engineering Letters are peer-reviewed technical papers that speed the publication of new results, discoveries and developments. They provide for the rapid dissemination of original ideas and significant contributions in applications, case studies and research in all areas of power engineering, with a particular emphasis on defining emerging problems and special needs in specific areas. They are published as a special section in the appropriate IEEE PES Transactions.
This section affords authors the opportunity to publish contributions within a few months of submission to ensure rapid dissemination of ideas and timely archiving of developments in our rapidly changing field. Original and significant contributions in applications, case studies, and research in all fields of power engineering are invited. Of specific interest are contributions defining emerging problems and special needs in specific areas. Authors are encouraged to submit contributions to the Letters Section offering new insight to established techniques, concepts, and methodologies in electric power engineering.
(Jul. 2021) Our paper on supplementary frequency regulators of DGs has been accepted for publication in IEEE Transactions on Smart Grid (IF: 8.96)
Developing a new strategy for supplementary frequency controllers of synchronous and inverter-interfaced DGs in a reconfigurable microgrid for the enhancement of frequency stability during load restoration.
(Jul. 2021) Our two papers, led by Jae-Young Park and Ji-Hun Ha, respectively, have been selected as Best Papers in 2021 Summer Conf., KIEE.
Distributed control of DGs for MG frequency and voltage regulations considering communication failure and recovery
Data-driven diagnosis of faults in PV system
(July 2021) Our postdoctoral researcher, Dr. Prasanth Ram J, has been selected for the PIURI fellowship. A big congratulations!
This fellowship is given to only five postdoctoral researchers at POSTECH in a year who have published high-quality, highly-cited journal papers. Please visit his Google Scholar.
He received the B.E. degree in the Department of Electrical and Electronics Engineering from Bannari Amman Institute of Technology in 2012, the M.E. degree in Power Electronics and Drives from Kumaraguru College of Technology in 2014, and the Ph.D. degree in the Department of Electrical Engineering at Vellore Institute of Technology, India, in 2018.
His research interests include PV modeling, PV fault detection, electric vehicles, charging stations for electric vehicles, PV array reconfiguration, maximum power point tracking, PV array reconfiguration, and PV and fuel cell parameter extraction.
(July 2021) Our postdoctoral researcher, Dr. Jae-Pil Ban, will join the Department of Electronic Engineering at Kumoh National Institute of Technology as an assistant professor, starting from this fall. A big congratulations!
He received the Ph.D. degree in the Department of Electrical Engineering at Pohang University of Science and Technology in 2020. While working in our lab, he was selected for the BK21 Postdoctoral Fellowship, which was given to only three outstanding postdoctoral researchers in the Dept. of EE at POSTECH.
His research interests include control and stability analysis of nonlinear dynamic systems such as hybrid systems, switched/impulsive systems, reset control systems, network control systems, chaotic systems, and industrial control systems. He is currently interested in modern power systems including microgrids and renewable energy sources.
Please find four of his papers on state estimation, line impedance estimation, and DG control: one accepted and the other three (1, 2, and 3) under review
(May 2021) Our Ph.D. student, Ye-Eun Jang, has been selected for the POSTECHIAN Fellowship. A big congratulations!
This fellowship is given to only two students in EE at POSTECH each year who have great academic achievements including high-quality journal papers, patents, awards, and research project results. She got all of the achievements!
She received the B.S. and M.S. degrees in Electrical Engineering at Pohang University of Science and Technology in 2016 and 2020, respectively. She worked for Samsung Electronics as a software engineer from 2016 to 2018, and joined our lab in 2018. Her research interests include the reliability of power systems and the energy efficiency in smart buildings.
Here are two papers of hers published in IEEE Transactions on Smart Grid and Information Science.
(May 2021) Successfully finished the 3-year project funded by KEPCO on P2P energy trading
최종평가: "우수"
수행연구원: 함승준, 신동환
Development of three different types of energy trading considering the operational constraints of distribution grid and the cost for the usage of distribution networks: (1) energy trading between an electric utility and MG operators, (2) fully-connected P2P energy trading, (3) direct energy trading between selective prosumers
(Apr. 2021) Selected for the 3-year research project funded by Ministry of Science and ICT
Research objective: Data-driven health management and optimal coordination of heterogeneous DGs to enhance building energy efficiency
(May 2021) Successfully finished a three-year project on IEC 61850 process bus, funded by KETEP.
In the project, we have developed power grid models and performance indices to evaluate dynamic performances of protection relays. The developed models and indices have been integrated into the PHILS platform at KERI and practically used for the tests of seven protection relays until now, creating the profit of approximately USD 134K. Our research also has assisted KERI and manufacturers in conducting the evaluation faster and more cost-effectively.
수행연구원: 박재영, 김준수
(Apr. 2021) Having a seminar talk with Professor Jef Beerten on HVDC-linked power grids
Open to the public
ID: 881 7677 5990
Title: Towards HVDC Grids - Paving the way to realise the climate ambitions of Belgium and Korea
Abstract: The energy transition is a key priority for both Belgium and Korea to combat climate change. The electrical energy system in particular is one of the key sectors to decarbonise through the introduction of renewable energy sources. High-Voltage Direct Current (HVDC) transmission is one of the key enabling technologies to move towards greener and more sustainable energy systems. The technology allows bringing power from large remote offshore wind farms to shore and is also a strong candidate to reinforce current-day electrical infrastructure to accommodate massive flows caused by a large-scale deployment of renewables in the system. Especially the prospects of moving the technology from point-to-point links towards HVDC grids holds large promises to integrate vast amounts of renewables at a reduced cost. This talk will introduce the technology, discuss opportunities and challenges for Belgium and Korea and provide a future outlook when moving the technology towards HVDC grids.
(Mar. 2021) Our paper on distributed state estimation has been accepted for publication in IEEE Transactions on Power Systems (IF: 6.074)
Developing a new strategy for decentralized phasor-aided state estimation (DPHASE) with bad SCADA and PMU data processing (detection, identification, and data restoration) considering a limited number of PMUs installed in power networks.
(Feb. 2021) Our paper on a reconfiguration technique for maximum power generation of a PV array in the cloudy weather has been accepted for publication in Energy (IF: 6.082)
Developing a new physical array reconfiguration technique for effective shade dispersion in PV arrays, which is distinct from many of the existing techniques with respect to compatibility for symmetrical and unsymmetrical PV arrays.
(Feb. 2021) Selected as an Associate Editor for Power and Energy Society Section in IEEE Access
Q1, IF: 3.745, Rank: 61/266 (EE), 35/156 (CS- Info. Syst.)
IEEE Access is a multidisciplinary, open access (OA), applications-oriented, all-electronic archival journal that continuously presents the results of original research or development across all of IEEE's fields of interest. IEEE Access will publish articles that are of high interest to readers, original, technically correct, and clearly presented. Its hallmarks are a rapid peer review and publication process with open access to all readers.
(Jan. 2021) Selected as an Associate Editor for IEEE Systems Journal
Q1, IF: 3.987, Rank: 56/266 (EE), 17/83 (OR), 31/156 (CS- Info. Syst.)
The IEEE Systems Journal (ISJ) is the technical journal of the IEEE Systems Council, and is published quarterly. This journal provides a systems-level, focused forum for application-oriented manuscripts that address complex systems and system-of-systems of national and global significance. The journal is intended to stimulate awareness, appreciation and utilization of systems thinking and the supporting systems engineering disciplines, especially for complex systems, systems-of-systems, complex cyber-physical systems, and complex smart systems, across many domains and application areas.
Examples of in-scope papers: Papers considering systems in which several independent entities are interacting and cooperating. For example, networked systems such as power grids, sensor networks, multi-agent systems, and communication networks are considered in-scope, when the main focus is not just one component of the network. In other words, the analysis and design should take the interaction between these components into account.
(Jan. 2021) Our paper on HVAC system modeling and control using interconnected ANNs has been accepted for publication in IEEE Transactions in Smart Grid (IF: 8.267)
Developed a new modeling and operation method of an HVAC system in a commercial building using online learning of interconnected LSTMs
(Jan. 2021) Selected for "ANOTHER" 3-year research project on the development of power HILS-based digital twin, funded by National Research Foundation of Korea
Won the competition for the 3-more-year contract (1단계 평가: "우수", 수행연구원: 김준수, 하지훈)
PI at POSTECH: $511K (approx. KRW 0.56B) (01.2021 - 12.2023)
Topics: (1) Autonomous control of grid forming inverters and (2) data-driven restoration of load services in a distribution grid including a large penetration of renewable generators
(Dec. 2020) Our project on the optimal control of HVDC converters has been selected as the Best Research Project among 204 projects funded by KEPCO.
2020년 사외공모 기초연구과제 우수과제 선정 (15/204)
수행연구원: 정병철, 박재영
B. Jeong, D. Kwon, J. Park, Y. Kim*, and O. Gomis-Bellmunt, "Optimal Secondary Control to Suppress Voltage Fluctuations in an HVDC-linked Wind Farm Grid", IEEE Transactions on Power Systems, Under Review, Dec. 2020
D. Kwon, Y. Kim*, and O. Gomis-Bellmunt, “Optimal DC Voltage and Current Control of an LCC HVDC System to Improve Real-Time Frequency Regulation in Rectifier- and Inverter-Side Grids," IEEE Transactions on Power Systems, vol. 35, no. 6, pp. 4539-4553, Nov., 2020
D. Kwon and Y. Kim* "Optimal Data-driven Control of an LCC HVDC System for Real-time Grid Frequency Regulation ", IEEE Access, vol. 8, pp. 58470-58482, Mar. 2020
(Jul. 2020) Our three papers, led by Seung-Jun Han, Jun-Soo Kim, and Gi-Ho Lee, respectively, have been selected as Best Papers in 2020 Summer Conf., KIEE.
P2P Energy Transactions
Analysis of Performances of Digital Relays
Self-healing Microgrids
(Nov. 2020) Joined the 2020 China-Korea Joint Symposium on High Renewable Energy Penetration to Power System
POSTECH with Tsinghua University, Shandong University, Northeast Electric Power University, Hohai University, Huazhong University of Science and Technology, Nantong University, Shanghai Jiaotong University, Zhejiang University, Yonsei University, Mokpo National University, Inje University, Korea University, and Seoul National University of Science and Technology
(Oct. 2020) Joining the KERI's research project on Adaptive VPP (virtual power plant)
(Oct. 2020) Our paper on analyzing the noise discomfort of neighbors due to electrical appliances has been accepted for MDPI Sustainability (IF:2.576)
(Aug. 2020) Our paper on new model of dynamic network reconfiguration has been accepted for publication in IEEE Transactions in Smart Grid (IF: 8.267)
Developed a new state-space model to estimate the dynamic responses of the grid frequency and voltages to dynamic network reconfiguration
(Aug. 2020) 한전공대 (가칭) 연구자문 위원 선정
김영진 교수가 한전공대(가칭) 연구자문 위원으로 초청 받았으며, 5대 핵심 연구분야(에너지AI, 에너지신소재, 차세대 전력그리드, 수소에너지, 기후환경)에 대한 연구 목표와 전략, 실행 방안 등을 구체화하는 데 기여할 예정입니다.
(Jul. 2020) Received the grade of "S" (higher than 95%) in the final evaluation for the project on "Coordination between Smart Grid and a Cluster of Smart Buildings (PI: Y. Kim, 12.2016 ~11.2019)" funded by the NRF
우리 연구실이 한국연구재단에서 지원한 전략과제(Coordination between Smart Grid and a Cluster of Smart Buildings, 2016. 12~2019.11)의 최종 평가에서 S 등급(95점 이상)을 받았습니다.
(Jul. 2020) Invited as the Guest Editor for the Special Section in IEEE Transactions on Cloud Computing (IF:4.714)
(May 2020) Our paper on optimal control of HVDC converters has been accepted for publication in IEEE Transactions on Power Systems (IF:6.807), which is the most conservative and prestigious journal in the area of power systems.
Developing an optimal control strategy of the DC-link voltage and current of an LCC HVDC system to improve real-time GFR in both rectifier- and inverter-side AC networks while mitigating conflicts among the P-f and P-Vdc droop controllers of the HVDC converters.
(Apr. 2020) Selected for for the 4-year research project funded by Ministry of Science and ICT
Research objective: Developing Self-healing Distribution Grids Using Real-time State Estimation and Reinforcement learning
(Apr. 2020) My single-authored paper has been accepted for publication in IEEE Transactions on Smart Grid (IF: 10.486).
Developed two ANN-based approaches to (1) capture the building thermal dynamics and integrate directly into the optimization problem and (2) create the mapping between the environmental input variables and the optimal decision variables.
(Apr. 2020) Dr. Kim has been invited as an associate editor of the Journal of Electrical Engineering & Technology (JEET) (IF: 0.715).
(Mar. 2020) Dr. Kim has been invited as the guest editor of the special issue on "AI and Big Data Applications for Smart Buildings" in the journal of Energies (IF: 2.707).
(Mar. 2020) 3-D User Interface of BEMS for AI-based Control of Building Thermal Energy
A milestone in the project on "Big Data-Driven Optimal Operation of Building Energy Systems"
(Mar. 2020) Our paper on optimal data-driven control of HVDC system has been accepted for publication in IEEE Access (IF:4.098)
Developed a data-driven dynamic model of HVDC-linked grids and a data-driven linear quadratic Gaussian regulator for optimal secondary frequency control
(Feb. 2020) Our paper on retail electricity pricing via online supervised learning of demand response of HVAC systems has been accepted for publication in Applied Energy (IF:8.426, Rank: Top 7.3% in Energy)
Developed optimal electricity pricing in a single-level decision-making structure, which is simpler and more practical than a bi-level one, by replacing the DR optimization problem with the online meta-prediction-enabled ANN
Demonstrated the effectiveness and practical applicability of online meta-prediction
(Feb. 2020) Our paper on optimal solvers for two-stage microgrid economic dispatch has been accepted for publication in Energies (IF:2.707).
(Jan. 2020) Our paper on a new initialization method for input variables of neural networks has been accepted for publication in Information Science (IF:5.524).
(Nov. 2019) Our paper on optimal V2G of mobile ESS has been accepted for publication in IEEE Transactions on Industry Applications (IF:3.347), one of top-tier journals in the area of power grid.
(Nov. 2019) Dr. Kim has been selected as the 2019 Best Reviewer of IEEE Transactions on Smart Grid (IF: 10.486).
Also joining the "Loads" subcommittee in the PES Technical Committee for “Smart Buildings – Loads – Customer Systems (SBLC)."
(Jan. 2020) Joining the IEEE IES TC on Smart Grids.
(Dec. 2019) Our paper on optimal battery temperature control via the interconnection of multiple ANNs has been accepted for publication in IEEE Access (IF:4.098).
(Sep. 2019) Our paper on decentralized conservative voltage regulation (DCVR) in an inverter-based MG has been accepted for publication in IEEE Access (IF:4.098).
(Sep. 2019) Our paper, led by Jae-Young Park, has been selected as Best Paper in the 2019 Summer Conf., KIEE. Congratulations!
Modeling the dynamic variations in MG frequency and voltage due to network reconfiguration for load shedding and restoration
(May 2019) Our paper, led by Ye-Eun Jang, has been selected as Best Paper in the 2019 Spring Conf., KIEE. Congratulations!
ANN-based modelling and optimal indirect control of an HVAC system
(Aug. 2019) Attending the tutorial session on dynamic state estimation (DSE) in IEEE General Meeting, 2019 (Atlanta, GA)
(Jul. 2019) Selected for the (2+3)-year research project on Digital Twin, funded by National Research Foundation of Korea
(Mar. 2019) The first SCI paper of our students, led by Byeong-Cheol Jeong, has been accepted for publication in Energies (IF: 2.676).
Entitled: Implementation of Optimal Two-Stage Scheduling of Energy Storage System Based on Big-Data-Driven Forecasting- An Actual Case Study in a Campus Microgrid
(Nov. 2018) Our paper on optimal electricity pricing using game theory for reliable and cost-effective distribution network operation has been accepted for publication in IEEE Transactions on Smart Grid (IF: 7.364).
Development of a retail pricing strategy using a bi-level decision model to assist a DISCO and end-users in achieving optimal price-based DR for HVAC systems, while considering operational aspects of distribution network (DN)
(Feb. 2019) Our student (Byeong-Cheol Jeong) has been selected for the scholarship of Korea Electric Power Corporation. Congratulations!
His research interests are in real-time control of VSC-HVDC systems and optimal operation of microgrids.
(Feb. 2019) Selected for the 4-year research project funded by National Research Foundation of Korea
Research objective: Developing optimal algorithms of smart grid operation via autonomous building energy management and P2P energy transaction using energy big data
(Dec. 2018) Selected for the 3-year research project funded by Korea Electric Power Corporation
Research objective: Developing optimal frequency/voltage control algorithms of a line-commuted converter (LCC) high-voltage DC (HVDC) system
(Jul. 2018) Selected for the Research Collaboration (Energy, Robot, Mobility service, AI Sector) project sponsored by Hyundai
Research objective: Developing universal vehicle energy management system (UVEMS) using machine learning algorithms
(Mar. 2018) Selected for the 3-year research project funded by Korea Electric Power Corporation
Research objective: Developing sub-functions for Advanced Distribution Management System (ADMS) to improve P2P energy trading in distribution grid
(Apr. 2018) Our paper on mobile energy storage systems (MESDs) in distribution network has been accepted for IEEE EEEIC 2018 and IEEE I&CPS 2018.
The first and second authors (S. Kwon and J. Park) will visit and see you guys in Italy in June, 2018!
(Feb. 2018) Our paper on modeling and analysis of a new HVDC system has been accepted for publication in IEEE Transactions on Power Delivery (IF: 3.218).
(Feb. 2018) My single-authored paper (again!) on a VUF sensitivity matrix in unbalanced distribution network has been accepted for publication in IEEE Transactions on Power Systems (IF: 5.680).
(Dec. 2017) My single-authored paper on machine-learning-based DR with human sensing has been accepted for publication in IEEE Transactions on Industrial Informatics (IF: 6.764).
(Feb. 2018) Selected as the Best Lecturer for the Nano-IP at SNU in the year of 2017
(Dec. 2017) Invited to serve the Technical Program Committee for IEEE ISGT Asia 2018
(Nov. 2017) Invited as a speaker for the ECE Colloquium at UNIST (ee.unist.ac.kr/ece-colloquium1122-2/) and the Nano-IP at SNU (nanoip.snu.ac.kr/)
(Jun. 2017) Invited as a member of IEC Technical Committee 95 (COSD TC95) - Measuring relays and protection equipment
(May 2017) Invited to join the editorial board for IEEE Transactions on Smart Grid (IF in 2016: 6.645, 5-yr IF: 8.315), which is one of the most prestigious journals in the area of power grid.
It's an honor for me to serve as Editor and work with the rest of the board members for the technical promotion of this critical research area.
Introduced in many news articles including http://news.joins.com/article/21619618 http://news.chosun.com/site/data/html_dir/2017/05/30/2017053000095.html
(May 2017) Made the contract for a yearlong project with Argonne National Lab. on distributed energy storage resources
Network Optimized Distributed Energy Systems (DE-FOA-0001289)
- We will continuously seek the opportunities for international collaboration!
(Feb. 2017) Selected as the 13th popular article in IEEE Transactions on Smart Grid
Y. Kim, J. L. Kirtley, and L. K. Norford, Reactive Power Ancillary Service of Synchronous DGs in Coordination With Voltage Control Devices