Analysis of Pooling 345 kV Bulk Transmission Outage Data Between The Mid-Continent Area Power Pool and Northeast Utilities

The 345 kV bulk transmission Forced outage data from two remote regions were converted to a common format. An agreed upon philosophy of analysis was established which was acceptable for both regions. Four separate analyses were performed on the two study region´s ( Mid-Continent Area Power Pool and Northeast Utilities ) 345 kV Forced outage data from the study years 1977-1981: Each individual region, comparison of data from the two regions, and the region data pooled. Important environmental differences between the two regions which affected the performance of the 345 kV transmission were identified. It was demonstrated that pooling of the Line-Related suimmer Forced outage data to gain knowledge of the corresponding outage rates was reasonable once the outage data pertaining to important differing environmental parameters were disaggregated.