配置双进双出磨煤机的1000MW机组一次风机RB引起锅炉MFT的原因分析及对策
Reason Analysis and Countermeasure of Boiler MFT Caused by RB of Primary Fan of 1000 MW Unit with Double-Inlet and Double-Outlet Mill
翁景 1舒畅 2张新胜 3吴跃森 1陈巍文4
作者信息
- 1. 杭州意能电力技术有限公司,浙江 杭州 310014
- 2. 浙江省能源集团有限公司,浙江 杭州 310007
- 3. 国网浙江省电力有限公司电力科学研究院,浙江杭州 310014
- 4. 杭州意能电力技术有限公司,浙江 杭州 310014;浙江大学工程师学院,浙江杭州 310015
- 折叠
摘要
针对某配置双进双出钢球磨煤机的超超临界 1000 MW机组由于锅炉动态总燃料量无法精确计算导致一次风机RB试验过程中引起锅炉MFT(主燃料跳闸)的问题,提出了增加汽动引风机静叶调节前馈、优化燃料主控逻辑、提高一次风机出力的控制策略,对容量风门控制以及炉膛负压控制的策略进行优化,从抑制负压骤降、稳定炉内燃烧两方面进行一次风机RB控制逻辑优化.试验结果表明,优化后的控制策略有效避免了一次风机RB试验时炉膛负压波动过大引起全炉膛灭火,保证了机组的安全和稳定运行,可为同类型机组一次风机RB的控制逻辑优化以及运行调试提供参考借鉴.
Abstract
In order to solve the problem that RB of the primary fan of ultra supercritical 1000 MW unit with double-in and double-out mills causes the boiler MFT(main fuel trip),proposes a control strategy that increases static blade regula-tion feedforward of steam driven induced draft fan,optimizes fuel master control logic and increases primary air fan output effort,optimize the strategy of capacity valve control and furnace negative pressure control,and optimize RB control logic of primary fan from suppressing negative pressure drop and stabilizing combustion in the furnace.The test results show that the optimized control strategy can effectively avoid the excessive fluctuation of negative pressure in the furnace during RB test of primary fan,and ensure the safe and stable operation of the unit.It provides a reference for the control logic optimization and operation debugging of the primary fan RB of the same type unit.
关键词
一次风机RB试验/双进双出钢球磨煤机/全炉膛灭火/MFTKey words
RB test of primary air fan/double-inlet and double-outlet ball mill/furnace flame failure/MFT引用本文复制引用
出版年
2024
NETL
NSTL
万方数据