Upgrade of Java-Bali Control Center master station

Main task of Java-Ball Control Center (JCC) master station upgrade is replacing the old master station of Alstom's ELENAS SCADA/EMS with Siemens SPECTRUM. Alstom's system includes software and hardware with DEC VAX computers and DEC open VMS operation system. While, Siemens SPECTRUM system utilizes SUN UltraSPARC and SUN Solaris operating system. The migration process is designed to have minimum down-time of Java Bali power system monitoring and controlling functions.