大型发电机组电气系统调试常见问题及其防范措施

Common problems and preventive measures about electrical systems testing of large units

通过多年大型发电机组电气系统调试,汇总并总结了大型发电机组电气系统调试过程中常见的设计、安装、操作、设备配合等问题,对其进行了规律性分析。为了避免该类问题的发生,提出了一些防范措施,包括严格按照调试措施及操作票执行操作、临时修改部分保护定值、PT本体加压等,为大型机组电气系统调试起到一定的借鉴作用,有效防止类似问题的发生。

This paper summarizes some common design problems, installation problems, operational problems, equipment matching problems through many years of electrical systems testing abuout large units, and analyses the regularity. To void this kind of problems, this paper offers a few preventive measures, including according actions and operation orders strictly, modifying some protection fixed value temporary, applying voltage to PT. It can have a reference effect to the electrical systems testing of large units, help to prevent these kind of problems.