超超临界机组高加跳闸对机组安全性影响分析  

Ultra Supercritical Unit High Trip Impact Analysis on the Safety of Units

作　　者：庄乾伟 靖长财 ZHUANG Qian-wei JING Chang-cai

机构地区：[1]国华三河发电有限责任公司 [2]神华国华(北京)电力研究院有限公司

出　　处：《电站系统工程》2017年第1期41-44,共4页Power System Engineering

摘　　要：针对超超临界机组高加跳闸后影响机组安全性问题,以1000 MW机组为工程应用背景,分析了高加跳闸后机组主要参数变化规律,提出了高加跳闸后热工控制逻辑,且通过机组现场实际试验予以验证。试验结果表明:热工控制逻辑符合实际情况,即维持汽轮机高压调节阀开度和燃料量基本不变,给水流量根据给水温度及锅炉特性进行动态调整,实现主汽温度平稳变化的主要目标,有效地提高高加跳闸后机组的安全性。For ultra supercritical unit high impact after tripping unit security issues, in the engineering application background of 1000 MW unit, the main parameters after add trip unit is analyzed, the high trip after thermal control logic is put forward, and through the actual unit experiment verified, the results showed that the thermal control logic conforms to the actual situation, that is to maintain the steam turbine high pressure regulating valve opening and fuel quantity, feed water flow according to the features of the feed water temperature and boiler dynamic adjustment, the smooth realization of the main steam temperature change＇s main goal, effectively improve the security of high after add trip unit.

关 键 词：高加 中间点温度 主汽温度 汽机高压调节阀 给水流量 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]