Traditional Power Grid Smart Grid
It has Electromechanical system It has digital system
It operates with estimated reliability It operates with predictive reliability
Manual maintenance and monitoring Self-monitoring
Monitoring, protection,and control systems are limited It uses WAMPAC and Adaptive protection systems
Centralized generation Distributed generation
Solid state based relays Microprocessor based relays
Manual recovery Automatic and self-healing capability
Manual device monitoring Remote device monitoring
half duplex and local full duplex communication Integrated and global full duplex communication
Delimited control system Ubiquitous control system
Limited Customer choices Large amount of customer choices
Less integrated and limited market for new products and services Well Integrated and vast markets
No importance for power quality Gives priority to power quality for digital economy
Inefficient management of operational data and assets Efficient in data management and assets
Very limited amount of sensors Large amount of sensors
No energy storage Energy storage
Table 1: Difference between traditional power grid and smart grid.