上海地区大机组10年热控保护动作原因统计分析

Statistical analysis of operation reasons of thermal control protections for large units in recent 10 years in Shanghai

自1996年起,上海地区建立了一个统一的大机组(300 MW及以上)热控保护动作档案,对所有大机组发生的保护动作情况进行了规范化统计。通过汇总、分析,为动作原因和影响因素的分析提供了有用的透析基点,逐步形成了一整套防止和减少保护动作次数、提高保护动作准确率的方法和措施。

From 1996, the file of thermal control protection operation of large units （300 MW and above） has been constructed in Shanghai, and standardized statistics of protection operation happened to all the large units were performed. The statistics provide support for analyzing the protection operation reasons and influencing factors, and help develop a set of methods and measures to reduce the times of protection operation and improve the operation accuracy of protections.