When a big storm occurs, the Space Weather Prediction Center releases a warning to the U. S. Department of Homeland Security, emergency managers and agencies responsible for protecting power grids.

一场强太阳风暴到达时，太空天气预测中心发送警告信息给美国国土安全局，应急指挥人员和保护电网的部门。

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With wide area dynamic information, the fast and effective control by inter-connected power system security, stability and emergency control system becomes possible.

在广域动态信息条件下，使互联电网的安全稳定紧急控制系统的快速、有效控制的实际应用成为可能。

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Electrical operation devices which has the two function of power cut emergency and fault emergency must indeed meet the "security norms".

真正满足《安全规范》的紧急电动运行的电气操作装置必须严格具有停电应急和故障应急两种功能。

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In 1986, South Africa declared a national state of emergency, giving virtually unlimited power to security forces and severely restricting news coverage of unrest.

CNN: Wednesday