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水电站主机和辅机的操作、控制、保护、信号以及自动装置等的二次回路,是保证设备安全运行和实现电站自动化的重要环节.这个环节是一个庞大复杂的系统,在运行中往往会发生一些意想不到的问题.有的在安装投运后不久出现,有的在投运很久后才发生,有的很快能查明原因,有的长期难以查明.有的在偶然的情况下,找出原因,大有“得来全不费功夫”之感,本文介绍数例二次回路引起的故障,供设计、安装和运行参考.
The secondary loop of operation, control, protection, signal and automatic device of the main and auxiliary power stations of the hydropower station is an important link to ensure the safe operation of the equipment and to realize the automation of the power station, which is a huge and complex system and often occurs in operation Some unexpected problems, some appeared shortly after installation and put into operation, some took place long after operation, some quickly identified the cause, and some were difficult to identify in the long run. In some cases, Find out the reason, there is a great “get it all without effort” feeling, this article describes the number of cases caused by secondary circuit failure for the design, installation and operation of reference.