求翻译：[摘要] 以佛山供电局220kV变电站为例，介绍220kV备自投装置的主要功能及工作原理，分析220kV雷岗变电站备投方式的具体判断策略、动作逻辑。并就线路检修时，对备自投装置投入相应检修压板存在的隐患，提出整改方案。是什么意思？

[Summary] 220kV substation in Foshan power supply Bureau, for example, introduce the main features of 220kV automatic bus transfer equipment and works, analysis of 220kV substation bus transfer Lei Gang decide the strategy, the action logic. And when the line maintenance, for automatic bus transfer equipment hidden inputs of the corresponding existing plate inspection, submit a rectification plan.