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 <nk, Wk>5.if Re (a)< D then6.m(k) = 17.clse"8m(k) =9.end if10.end for11.for k = 1 to N do12.if m(k) +m(k + 1) = 013.n= nk, = 0k,= Nk+1,=Wk+114.Neri = (n +/2, Ocri = (@ + )/2, store the set< neri, Oert >15.end if16. end for17.Calculate all critical delay margins Ter based on (24)18. Determinc the system MTD er, in the direction h19. Change the scarching direction h and repeat the above procedures 2. Modeling of NMG Coordinated control of NMG Layer[AV ] = A,[AVD ]+ B,[AUMG][AiMG]= AM [AV(t -Twme)]+ AM, [AVDG (t- t.)] Entire DC NMG 3.1 NMG under Multiple Time Delays Stability analysis Findings: 1.The interconnection of MG increase theoscillation modes2Measurement delay has higher influence tosystem stability than communication delayDifferent modes will be triggered by theincrease of different delays Optimal reactive power planning using oppositional grey wolfoptimization by considering bus vulnerability analysis Rohit Babul @ I Saurav Raj2,4 I Bishwajit Dey3.4 @ 1 Biplab Bhattacharya 1 Department of Electrical and ElectronicsEngineering, Lendi Institute of Engincering ancTechnology, Jonnada, Andhra Pradesh, India2 Department of Electric