高压直流、光伏、电动汽车和混合动力系统直流故障的新挑战和先进解决方案.pdf

1、IEEE Power Electronics Societywww.ieee-pels.orgBrad LehmanIEEE PELS,President(2023-2024)Northeastern University;Boston,USABrad.pelsieee.orgEmerging Challenges and Solutions in Addressing DC Faults in Modern Power Systems作者授权中国电源学会发布，未经作者同意禁止转载Brad Lehman作者授权中国电源学会发布，未经作者同意禁止转载Brad LehmanIEEE PELS,Pr

2、esident 作者授权中国电源学会发布，未经作者同意禁止转载IEEE PELS,President 作者授权中国电源学会发布，未经作者同意禁止转载(2023作者授权中国电源学会发布，未经作者同意禁止转载(2023Emerging Challenges and Solutions in 作者授权中国电源学会发布，未经作者同意禁止转载Emerging Challenges and Solutions in Addressing DC Faults in Modern Power 作者授权中国电源学会发布，未经作者同意禁止转载Addressing DC Faults in Modern Power

3、 Systems作者授权中国电源学会发布，未经作者同意禁止转载SystemsI.Introduction II.DC Safety ChallengesII.PV Systems and Line-to-Line Faults IV.Electric Vehicles and Energy Storage Systems V.Conclusion and Future DirectionsOutline作者授权中国电源学会发布，未经作者同意禁止转载IV.Electric Vehicles and Energy Storage Systems 作者授权中国电源学会发布，未经作者同意禁止转载IV.

4、Electric Vehicles and Energy Storage Systems V.Conclusion and Future Directions作者授权中国电源学会发布，未经作者同意禁止转载V.Conclusion and Future DirectionsDC is Arriving1.Introduction作者授权中国电源学会发布，未经作者同意禁止转载作者授权中国电源学会发布，未经作者同意禁止转载1.Introduction作者授权中国电源学会发布，未经作者同意禁止转载1.IntroductionII.DC has unique safety challengesDC is

5、 Arriving作者授权中国电源学会发布，未经作者同意禁止转载作者授权中国电源学会发布，未经作者同意禁止转载 What makes DC faults harder to detect and clear than AC faults？o Absence of reactive power&frequency used in AC protection o No Zero-Crossing:DC currents flow continuously,with no natural zero point to help interrupt the fault current.Normal Cu

6、rrentAFault CurrentFault CurrentNormal Currentzero-crossingAC Fault Clearing Progress DC Fault Clearing Progress 作者授权中国电源学会发布，未经作者同意禁止转载Absence of reactive power&frequency used in AC protection 作者授权中国电源学会发布，未经作者同意禁止转载Absence of reactive power&frequency used in AC protection Crossing:DC currents flow