We leverage historical outage data to quantify the resilience benefits of undergrounding a circuit. The historical performance of the overhead circuit is compared to the performance if the circuit had been undergrounded in the past. The number of outages, customers affected, outage duration, and customer hours lost are used as metrics to quantify the benefits of undergrounding. Results show 75% and 78% reductions in customer hours lost per year for two selected circuits, as well as a significant reduction in the average number of outages and customers affected per year, highlighting the advantages of undergrounding. The benefits of investments that result in 10% faster outage restoration are also calculated by rerunning history with the faster restoration included.

翻译：本文利用历史停电数据量化电路埋设的韧性效益。将架空线路的历史性能与假设过去已实施埋设的情况进行对比。采用停电次数、受影响用户数、停电持续时间及用户损失时长作为量化埋设效益的指标。结果显示，两个选定线路的年均用户损失时长分别降低75%和78%，同时年均停电次数与受影响用户数显著减少，突显了埋设方式的优势。此外，通过将更快的恢复速度纳入历史数据重演，计算了可使停电恢复速度提升10%的投资所产生的效益。