贵联
1.Up to now, our Group is preparing for listing in Hong Kong before the end of this year and constructing CBD in Shenzhen Center.
2.Based on the simulation tool of FASTEST and BPA, the transient stability margin of Suthern Cina Power Grid AC/DC hybrid system in 2005 and 2006 is analyzed and studied in this paper:(1) The dynamic characteristic of DC system while faults occur on rectifier terminal of AC system is studied.

