Distribution automation can improve the speed, cost, and accuracy of several key distribution system processes, including fault detection, feeder switching, and outage management; voltage monitoring and control; reactive power management; preventative equipment maintenance. Distribution automation can improve the speed, cost, and accuracy of several key distribution system processes, including fault detection, feeder switching, and outage management; voltage monitoring and control; reactive power management; preventative equipment maintenance. This document offers a complete guide to Cisco's Smart Grid Field Area Network (FAN) solution architecture. It covers various ways this solution can be used, including: ● Monitoring secondary substations for scenarios like Fault Location, Isolation, and Service Restoration (FLISR) and Volt/VAR. OVERLAY VS. 50This White Paper, “Smart Grid for Distribution Systems” addresses the benefits and challenges of implementing the many different Distribution Automation functions. Distribution equipment, once installed on feeders, was expected. Distribution Automation (DA) is a collection of technologies like sensors, processors, communication networks, and switches that help utilities collect, automate, analyze, and optimize data. This improves the efficiency of power distribution systems.