国华台山电厂百万机组给水控制策略

Feed-water Control Strategies for the 1000MW Unit of Guohua Taishan Power Plant

本文主要介绍台山电厂二期给水自动控制的策略,即基于中间点焓值校正的控制动态燃水比值的给水自动控制系统,并根据给水自动逻辑图分析给水焓值控制回路、水流量基本指令回路、防水冷壁管出口温度越限回路、过热器减温水流量校正回路。

This essay mainly introduces the auto-control feed-water strategies for the second-stage project of Taishan Power Plant. Based on the enthalpy value adjustment of the intermediate point, the auto-control feed-water system controls the dynamic ratio between the fuel and the water. Based on the feed-water ALD, the system analyzes the control circuit of the feed-water enthalpy value, the basic instruction circuit of the water flow, the out-of-limit pre- vention circuit of the outlet temperature of the water wall tube and the de-superheating water flow adjustment circuit of the super heater.