文章针对灭火保护误动进行了事故分析，提出了技改方案，从而有效地提高了灭火保护装置的可靠性。

The paper aims at the error action of outfire's protection, gives accident analysis, and puts forward improving project. So it can improve the reliability of outfire's protection.

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对采用可编程控制器的小型汽轮机保护系统常出现的几种误动进行了分析，并且提出了切实可行的改进方案。

This paper analyses the little steam wheel machine with programmable controller, and puts forward some practical plans for improvement.

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详细分析LCD - 3a线路纵差保护误动的原因，提出解决的措施及理论依据。

Reasons of wrong actions of longitudinal differential protection of LCD-3A line are analyzed. Solutions and theoretic criteria are proposed.

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