NR-ISGrid 网格形成技术及应用.pdf

1、NR-ISGrid Grid-formingTechnology and ApplicationsCONTENTS0102Philosophy and Theory03Typical Applications04Summary and Outlook3BackgroundTo achieve carbon neutrality goals,an increasing number ofnew energy sources are being widely adopted,such as PV,Wind,BESS and etc.Energy has graduallyevolved from

2、serving as“”tobecoming“”.Traditional power gridscentered on synchronous machines face significant challenges,and the grids requirements for primary energy sources arebeginning to shift.15%25%Renewable CAGR to 203545%65%Renewable Proportion by 20354ChallengesPower system is gradually evolving from a

3、traditionalcoupled system dominated by,to a new energy power system characterized bycoupling anddominated by.are decreasing,altering the grids stabilitycharacteristics and giving rise to new stability issues such as.Voltage Stability IssueFrequency Stability IssueBroadband Oscillation IssuePower Ang

4、le Stability IssueTime(sec.)4035302520151050转速偏差(Hz)5049.849.649.449.249Fluctuating and intermittent nature of renewable energy outputcannot meet the real-time demands of electricity consumption,resulting inin power grid system.Shortfall of Regulation PowerLong Time Scale Energy BalanceRenewable ene

5、rgy equipment lacks sufficient support for voltage andfrequency,resulting in.Under disturbances,the.Insufficient Support CapabilityShort Time Scales Security and Stability5ChallengesDue to high proportion of renewable energy sources into power grid,the systemtoprovide support.This leads to,andover g

6、rid frequency and voltage,resulting in frequent incidents,such as blackout in UK,9thAug 2019 and blackout inSpain-Portugal,28thApr 2025.UK,9thAug 2019 Spain-Portugal,28thApr 2025InsufficientInertiaInsufficientSCL6Grid-forming TechnologyThe,provides a genuine voltage source to the point of common cou