正常配置后，负载平衡器能为用户提供无缝的故障转移体验。
When configured properly, a load balancer can provide users with a seamless failover experience.
当故障导致供电系统与外电网断开后，此时供电系统因有功不平衡，将出现频率崩溃现象，导致大面积停电事故。
When disconnected with external power grid due to certain fault, it will result in frequency collapse, and even leads to large-scale blackout owing to the active power imbalance.
根据连续函数空间范数的定义，提出了电力系统运行状态与故障后稳定平衡状态之间距离的概念。
Based on the definition of norms in continuous function Spaces, a concept of distance between the operation state and the post-fault stable equilibrium state is suggested.
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