Co-ordinated protection and control upgrades substation reliability

Smart microprocessor based devices are now available for power system control and protection. They are intelligent and surpass the performance of their conventional predecessors by far, and are at the same time highly available due to inherent self-monitoring capabilities. They can communicate with each other and with higher control levels and provide valuable data for more effective and secure system operation. Their co-ordinated use in a total system approach for substation automation will significantly improve substation reliability