Eastern interconnection frequency response trends

Frequency response is a measure of an Interconnection´s ability to stabilize frequency immediately following the sudden loss of generation or load. It is a critical component to the reliable operation of the bulk power system, particularly during disturbances and restoration. This paper presents frequency response statistical trends for the Eastern Interconnection of North American electric grid. The statistical analysis tests whether observable decreases or increases between three annual data points constitute a statistically significant trend. The probability distribution of frequency response and contributing factors to it changes over the years are also examined. The statistical significance tests and studies have indicated a slowly increasing general trend for the North American Eastern Interconnection over time.