This paper describes . and compares three popularly used trouble locating methods of power lines, i. e. , protection action analysis, fault recorder analysis and lightning location system.

介绍了电力系统线路故障点判断常用的保护动作分析、故障录波器分析和雷电定位系统三种方法。

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But teams like the Carolina Hurricanes, Phoenix Coyotes, Tampa Bay Lightning, Anaheim Ducks and Columbus Blue Jackets would still have trouble making money unless they went at least two rounds in the playoffs.

FORBES: NHL Team Values 2012: Toronto Maple Leafs Are First Hockey Team Worth $1 Billion