Maximizing protection coordination with self-healing technology

Much of the smart gid initiative includes the installation of new recloser and switch controls as part of an overall reliability improvement on the distribution system. These new controls offer communication options that support Fault Isolation and Restoration systems, Load Optimization, and Integrated Voltage and VAr control. These new controls often offer multiple setting profiles that, when utilized properly, improve coordination of protective devices. The setting profiles can be used to define sectionalizer and switch mode options that can also greatly simplify coordination of the circuits. These profiles can then be better utilized by self-healing software to maintain coordination of the circuit-as it dynamically changes to restore outages and optimize circuit loading. This paper will discuss features of the most common controls and self-healing systems that offer practical solutions for every utility.