Security protection discuss of power load management (LM) based on GPRS/CDMA

This paper analyzed the specialty of LM system based on GPRS/CDMA. The shortage of security scheme used in LM system in safety zone I/II was discussed. The reduced possibility of the safety demand is presented also. A new safety scheme in safety zone III is designed. The new scheme was more simple and it improved the safety capability of the control zone I/II more effectively.