某超超临界机组高压缸切除事件分析与处理Analysis and Treatment of High Pressure Cylinder Transfer in a Ultra-supercritical Unit
袁岑颉,王异成,马宁,丁宁,张维
YUAN Cenjie,WANG Yichen,MA Ning,DING Ning,ZHANG Wei
摘要(Abstract)：
汽轮机高压缸切除事故严重威胁机组的安全稳定运行,如果处理不当,严重时会导致转子叶片不可逆的损坏,给发电企业带来严重的损失。由于超超临界机组高压缸切除案例较少,可参考的处理方法不多,运行人员面对此类事件时可能无法及时做出正确判断。结合某发电厂1号机组整套启动期间发生的汽轮机此类事件,分析了上汽超超临界机组DEH系统高压缸切除保护的设置方法和动作原理,详细介绍了该事件的过程和原因,提出相应的防范和优化措施,为同类型机组提供技术参考,避免发生类似事故。
High pressure cylinder transfer of steam turbine threatens the safe and stable operation of the unit.If not handled properly, it may even cause irreversible damage to the rotor blades, bring serious losses to power generation enterprises. There are fewer cases of high pressure cylinder transfer in ultra-supercritical units, and there are not many available treatment methods, the operator may be at a loss in the face of a high pressure cylinder transfer and unable to make correct judgment in time. In combination with the HP cylinder transfer during whole set startup of unit No.1 in a power plant, the paper analyzes the setting method and operation principle of HP cylinder transfer protection in DEH system of ultra-supercritical unit manufactured by Shanghai Turbine Company; it introduces the process and causes of the accident and proposes corresponding preventions and optimization, providing reference for the similar units to prevent the same accidents.
关键词(KeyWords)：
汽轮机;高压缸切除;DEH系统;优化措施
steam turbine;high pressure cylinder transfer;DEH system;optimization measure
基金项目(Foundation):
作者(Author):
袁岑颉,王异成,马宁,丁宁,张维
YUAN Cenjie,WANG Yichen,MA Ning,DING Ning,ZHANG Wei
DOI: 10.19585/j.zjdl.201811019
参考文献(References)：
- [1]刘玉文.1 000 MW超超临界机组运行特性研究[D].北京:华北电力大学,2009.
- [2]张建江,罗志浩.1 000 MW超超临界机组蒸汽旁路控制策略优化[J].浙江电力,2010,28(11):35-38.
- [3]王志杰,陈厚涛,朱晓星,等.超超临界汽轮机热应力控制技术分析[J].中国电力,2017,36(3):19-23.
- [4]陈东科,檀炜,刘永友.1 000 MW超超临界机组汽轮机转子应力保护分析与逻辑配置[J].浙江电力,2016,35(10):43-47.
- [5]祝建飞,姚峻,吴建平.1 000 MW超超临界汽轮机热应力监测及自动控制[J].中国电力,2009,42(6):21-24.
- [6]包锦华,黄勇.1 000 MW超超临界机组汽轮机DEH调试简介[J].热力透平,2008,37(4):290-292.
- [7]夏冰.超超临界汽轮机高压排汽温度控制保护详析[J].热力透平,2017(4):284-287.
- [8]袁岑颉.上汽超超临界机组DEH主汽压控制策略分析与优化[J].电力与能源,2018,39(3):409-412.
- [9]袁岑颉.西门子T3000系统优化改造[J].浙江电力,2017,36(6):76-79.
- [10]韩炜,何青,沈克伟,等.1 000 MW超超临界汽轮机转子启动过程的热应力分析[J].华电技术,2013,35(2):27-32.
- [11]蔡国保,刘国弼,赵军峰,等.印尼Indomayu电厂高压缸保护误动分析及处理[J].浙江电力,2013,31(6):35-38.
- [12]龙毅,沈丁杰,李雪,等.600 MW超临界机组汽轮机低压转子末级叶片损坏原因分析[J].中国电力,2010,43(5):35-37.
- [13]邓小文,崔振东.1 000 MW超超临界机组汽轮机启动和试运问题分析[J].电力建设,2012,33(5):93-96.
- [14]王渡,孙海彦.1 000 MW超超临界机组设计运行优化[J].电站系统工程,2014,30(2):28-30.
- [15]王会.西门子1 000 MW汽轮机DEH控制逻辑优化[J].中国电力,2014,45(9):6-10.