Why Existing Utility Metrics Do Not Work for Industrial Reliability Analysis

Electrical utility reliability indices such as System Average Interruption Frequency Index, System Average Interruption Duration Index, Customer Average Interruption Duration Index, Customer Average Interruption Frequency Index, and Momentary Average Interruption Frequency Index are adequately defined in IEEE Std. 1366-2012, and serve the purpose for which they were developed. However, the explosive growth of the electronics industry moving toward internet of things, along with the data center development necessary to support such explosive growth, has had significant impact on an aging power distribution system. As the utility world evolves toward the notion of smart grid, several new reliability metrics are needed to evaluate the electrical power to the customer's side of the meter.