Changes

====Reliability====

Reliability is the ability of a component or system to perform required functions under stated conditions for a stated period of time [IEEE Std 493-2007]. The extent and complexity of the smart grid architecture will introduce challenges to the reliability of the grid to a magnitude that may not exist today. Equally, the magnitude and geographical extent to which disruption of the grid can be affected will no doubt increase as complex architectures and communications facilities pervade into operations of the EPS at every level. <ref name="3o" />

==Links for further research==

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