In recent years, a series of cascading large blackouts have occurred in some countries, which caused huge social economy loss.

近年来，各国相继发生连锁大停电事故，造成巨大的社会经济损失。

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A large number of blackouts are influenced by voltage instability directly or indirectly in the world, so voltage instability is given more and more attention.

在世界范围内，直接或间接地由电压稳定造成的停电事故很多，电压稳定问题得到了日益的关注。

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In recent years, large area power blackouts occurred in many cities at home and abroad and caused enormous damage to society.

近年来，国内外许多城市相继发生大面积停电事故，给社会造成了巨大的损失。

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We discussed this as well as some other advantages DirecTV enjoys over its competitors in a recent article. (See DirecTV Subscriber Gains Continue.) Marketing campaigns drove subscriber additions in recent quarters and so far it has avoided any large scale blackouts similar to the ones experienced by Dish in pricing disputes with content carriers.

FORBES: DirecTV Gets Payoff In Stock Price For Subscriber Revenue Gains

Today, the best that can be said is that the extent and duration of future EMP-induced blackouts would depend on whether the emitter generates a small or large pulse, and whether it is detonated at ground-level or from high altitudes.

CENTERFORSECURITYPOLICY: The Blackout Next Time