Current industry practices in bulk transmission outage data collection and analysis

The scope of the task force was to outline techniques and procedures for analysis of bulk transmission outage data, and to explain the uses and limitations of calculated statistics. The task force had the following objectives: survey the utility industry on the collection and analysis of bulk transmission-independent outage events; evaluate the basic concepts necessary to develop performance indices of independent and multiple-related outage events; review the impact of weather on bulk transmission performance; review the difficulties in gathering data for modeling weather effects on transmission; review current approaches to modeling weather effects on transmission; and evaluate the availability of information on the extent and duration of thunderstorms, ice storms, and other damaging weather in the United States. These works are described