Electric Power ›› 2017, Vol. 50 ›› Issue (2): 29-33.DOI: 10.11930/j.issn.1004-9649.2017.02.029.05

• Column of UHV Transmission • Previous Articles     Next Articles

Research on Grid-Connection Modes of Sending Ends and Transmission Capability of UHV Transmission Lines

AI Lin, GUO Yanheng, XU Guoxin   

  1. China Renewable Energy Engineering Institute, Beijing 100120, China
  • Received:2016-07-22 Online:2017-02-20 Published:2017-02-22

Abstract: In order to improve the system stability and transmission capability of UHV transmission line, the paper proposes a method for choosing suitable grid-connection modes of sending ends in different UHV AC grid development stages. Firstly, the system stability is studied for different grid-connection modes of UHV sending stations. The impacts of electromagnetic looped network structure on stabilities of regional power system are analyzed. And then, the suitable grid-connection modes of sending ends are analyzed for different UHV grid development stages. The results show that suitable grid-connection modes of sending ends can improve the stability of the UHV system and the transmission capacity of transmission corridors. Finally, the feasibility and validity of the proposed method were verified through real power system.

Key words: ultra-high voltage, sending end, grid-connection modes, transmission capacity, power system stability, electromagnetic looped network

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