The Northeast Utilities distribution disturbance and interruption monitoring system

An online monitoring system, the distribution disturbance and interruption monitoring system (DIMS), for measuring system-wide levels of momentary disturbances and interruptions of voltage is described. Data from the monitors are stored up on a personal computer and are used to correlate interruptions and disturbances with suspected causes. The data collected over a period of two years are analyzed in terms of the number, rate, and severity of events.<
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