Improve signal setting rationality of substation supervisory control system

Along with the integration of 220 kV unattended substations into centralized control station,more attentions should be paid to the signal setting rationality of substation supervisory control system. The signal setting status of supervisory control systems in Nanjing area and the exis,ting problems are investigated and analyzed. According to the actual conditions of different 220 kV substations,some suggestions are put forward to rationalize the monitoring signal setting,which are applied in substation reconstruction projects.