The detailed configuration of primary frequency modulation for large thermal power plants as well as note-worthy points was presented.

介绍了一次调频在电力系统中的作用及华北电网对一次调频技术指标要求。

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Practice proves that the method is economic, convenient and reliable, and is worth spreading in other similar projects of large thermal power plants.

实践证明，该方法经济、方便、安全可靠，值得在其它类似大型火力发电机组安装工程中借鉴推广。

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In the circulating water direct-flow supply systems of large thermal power plants in todays China, the circulating water cleaning devices are basically plate and frame rotary strainers.

目前在我国大型火力发电厂循环水直流供水系统中，循环水的清污设备基本上采用板框式旋转滤网。

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But for the most part, large power plants cannot shutdown for just one hour as there are thermal and mechanical concerns that put the plant at risk of being damaged for doing so.

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