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.

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。

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Due to large scale and complexity, conventional small signal stability analysis cannot meet the demand of plan, design and operation of the power grid.

随着系统规模和复杂程度的不断增加，传统的小信号稳定分析已经不能满足电力系统规划、设计和运行的需要。

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Many autonomic subnets were required by large scale electric power system, which was one typical grid computing system.

大规模电力系统往往需要跨多个具有自治性的子网，是典型的网格系统。

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Judging by their tentative and speculative answers, we are still years away from seeing significant, large-scale improvements to the power grid.

FORBES: Preparing The Grid For The Next Superstorm

Xtreme, which has attracted backing from venture capital firms and corporate investors like Dow Chemical, Fluor and BP Alternative Energy, is developing large-scale digital power systems for renewable energy and micro-grid applications.

FORBES: Duke Energy Bets Big on Better Batteries

Any wind farm larger than 50 megawatt of power, and any large scale energy development such as the proposed grid connection in mid Wales comes under the authority of the Department of Energy and Climate Change in London.

BBC: Why many in rural Wales worry over power and pylons