ISSN 1674-0629 CODEN:NDJSAR Vol.13 No.9 (Ser.116) Published on Sep.20,2019Southern Power System Technology (monthly issue) is a science and technology journal with its first issue published on Oct.20.2007.The Journal focuses its attention mainly on encouraging and promoting innovation,development and application of power technology as being considerably concerned for its theoretical advance and engineering achievement.The scope of the Journal covers power system analysis and control,power system dispatching technology,power system relaying,real time digital simulation,IT and