This team Yu2021The problem of enhancement of urban power grids in the year isIEEE Transactions on Power SystemsJournal (SCIOne District) Published a paperVSC-HVDC Interties for Urban Power Grid Enhancement(Used for urban power grid enhancementVSC-HVDCInterconnection).

m88 live casino gamesUrban m88 live casino gamesPower Grid is facing many challenges for operations and expansion，To meet further demand growth and higher reliability requirements。Electric Power Company has considered adopting advanced transmission technology，to effectively improve the utilization rate and operation flexibility of existing infrastructure。This paper focuses on the transformation and modernization of urban power gridsVSC-HVDCTechnology。First，I proposed a potential technical solution，Convert the existing AC circuit to DC operation，It can improve the power transmission m88 sports bettingm88 live casino gamesability of the key transmission corridor，Increase the flexibility of network operation。Next，For the city gridVSC-HVDCThe normal operation of the node、Emergency operation and island operation status，I proposed three operation modes。I proposed a comprehensive、Adaptive emergency control strategy(AEC)VSC-HVDCThe joint line can adapt to the trend response。inPSCAD/EMTDCMiddle，Take the actual urban grid of China as an example，Verified the proposed cityVSC-HVDCThe flexibility and validity of the corresponding control strategy of the m88 com live casino registerM88 Online Live Casinointerconnection operation and the corresponding control strategy。

Figure1 Interconnection of Urban Loading AreaVSC-HVDCinterconnection scheme

Figure2 The topological structure and working principle of bypass switch(a)DC operation(b)DC operation(Use a spare circuit) (C)AC operation

Figure3 VSC-HVDCInterconnected Integrated Test City Power Grid Structure