结合光电传感器在变电站自动化系统中的应用现状和前景，提出了二次回路光电数字化的设想。
According to the current situation and prospect of applying OET in substation automation, the opinion of digital electro-optical secondary circuit is given out.
随着光耦元件在综合自动化变电站二次设备中的广泛应用，其工作特性也需要引起特别关注。
Along with the extensive application of optocoupler element in the secondary equipment of integrated automatic substations, its operating characteristic also needs much attention.
变电站二次回路通信从金属电缆模拟通信方式逐步转变为光电数字化通信方式。
The communication of substation secondary circuit is being transformed from metal cable analog mode to optic-electric digital mode.
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