信息物理微电网的韧性控制
Presenter: Yu Wang
Professor, Chongqing University
2023.12
Personal Information
Education & Working Experience:
Nanyang Technological University, SingaporeAug2012-Feb2017DoctorofPhilosophy, Interdisciplinary Graduate School, PowerEngineeringNanyangTechnologicalUniversity,SingaporeAug 2011 - May 2012Master of Science, School ofElectrical and Electronics Engineering,PowerEngineeringWuhanUniversity,ChinaSep2007-Jul2011Bachelor of Engineering,School of Electrical Engineering,Electrical Engineering and Automation口
Oct 2022 -
0ct2021-Sep2022
Nov2018-Sep2021
Rolls-Royce'
Sep 2016- Nov 2018
Main Contributor, Grid-wide Frequency Regulation using Distributed Energy Storage Systems Project (SS3.2M)
Research Interests:
Research Scope
Microgrid Stability&Control
Contents
Background
Problems and Challenges
3
Research Work
Summary and Future Work
1 Background and Motivation
Microgrids and Networked Microgrids
Microgrids: small-scale power systems with agroup of DERs and loads, which can operatein both grid-connected and islanded operationconditions.
Networked Microgrids: a group of microgridswith electrical interconnection and functionalinteraction.
AdvantagesofNetworkedMicrogrids:
Improve the energy conversion efficiency of the sources, load, storages in thesystem.Enhance the reliability and resilience of the system during main grid outages andreduce the need for critical load shedding.Mitigate the negative impact of integrating a large amount of renewable energyCreate more efficient energy management plan and reduce generation up/down
1 Background and Motivation
Microgrids Development
In 2o18, Commonwealth Edison, in collaboration withIIT, built the first utility-scale networked microgrids inChicago, United States
The microgrid-related market in the United States willreach a scale of $61.18 billion in 2027.
NTU Campus Microgrids
In 2021, a pilot project for distributed PV systems onrooftops throughout the county was initiated, resultingin a total of 2,927.9 kilowatts of new distributed PVinstalled capacity for the year, representing an 88.7%year-on-year growth.
Contents
Problems and Challenges
Research Work
Summary and Future Work
2 Problems and Challenges
Hierarchical Control of Microgrids
Primary Control:
Localized power sharing, gridstability, plug-and-playfeature.Current and voltage controlloops, virtual impedance.droop control, and other localcontrollers.Secondary Control:Frequency/voltage regulationand accurate power sharingTertiary Control:Tie-line power control.economic dispatch, optimalpower flow.
2 Problems and Challenges
Cyber-Physical Microgrids with Coordinated Control
Different coordinated control according to electrical structures and functionsA typical coordinated control for parallel connection of networked microgrids (NMGs)
Coordinated Control among MG (NMG Level)
Coordinated Control in MG (MG Level)
2 Problems and Challenges
Background
Problems and Challenges
Research Work
Summary and Future Work
3.1 NMG under Multiple Time Delays
Influence of time-delay to the DC NMG with distributedsecondary control and its mitigation method
Time-delay in coordinated control of DC NMG
Delay in MG Layer
3.1 NMG under Multiple Time Delays
Small-signal modelling
3. Eigenvalue and Stability Region
1. Modeling of MG
DC load and network
IDG = Y,VDGVpcc = YvVDGVpCCm = YMVDG
Stability region searching
Algorithm 1MTD Calculation Process
Coordinated control of MG Layer
1. Initialization: Time-delayed DC NMG model with system statematrix Asys, delayed state matrices Asys2, Asys, and Asyss'2. Set the searching direction h, initial searching point no, thesearching step An and calculation flag set m. The number ofintervals N = 2D/An3. for k =1 to N do4.Calculate the eigenvalues of Asys, + Et-2 Asysr e-jhen andstorc the data sct
