摘要
无扰切换是当前主流大型汽轮机阀门管理实现的一个重要功能,目前的大部分无扰切换研究工作都集中在设备正常状态的无扰切换实现方法上,尤其是起机并网时的无扰切换实现。为了研究火电机组灵活性,本文以多台600 MW级别机组为研究对象,针对机组存在的阀门管理缺陷进行故障诊断并实施优化改造,使机组安全顺利地投运了顺序阀配汽方式。然后,在此基础上进行了2类非正常运行工况下的无扰切换试验研究,探讨了机组故障状态下的无扰切换快速反应能力和设备故障对无扰切换的影响。试验结果表明:进行阀门管理优化不仅能够提高机组应对故障的反应能力,而且还能够降低机组切换控制系统对辅机等设备故障的敏感性。这对提高机组故障状态下的安全稳定性具有一定的借鉴意义。
Undisturbed switching is an important function in the governing valve management of large steam turbines.Most of the current research on undisturbed switching mainly focuses on its realization method in the normal state,especially when it is connected to the grid.To investigate the flexibility of thermal power units,this study takes multiple 600 MW-class units as its subject of research.It conducts fault diagnosis and implements optimization measures targeting the valve management deficiencies in these units,enabling the units to safely and smoothly adopt the sequential valve steam distribution mode.On this basis,experimental research on uninterrupted switching under two types of abnormal operating conditions is conducted,exploring the rapid response capability of uninterrupted switching under fault conditions and the impact of equipment faults on its implementation.The experimental results indicate that optimizing valve management not only enhances the unit's ability to respond to faults,but also reduces the sensitivity of units switching control system to auxiliary equipmen failure.This finding offers valuable insights for improving the safety and stability of power units under fault conditions.
作者
谢华
陈建勋
马志国
孙建国
张磊
XIE Hua;CHEN Jian-xun;MA Zhi-guo;SUN Jian-guo;ZHANG Lei(CHN Energy Credit Control Interconnection Technology Co.,Ltd.,Beijing 100088,China;CHN Energy Inner Mongolia Hulunbuir Power Generation Co.,Ltd.,Hulunbuir 021025,China;North United Power Co.,Ltd.,Hohhot 010020,China;Inner Mongolia Mengda Power Generation Co.,Ltd.,Erdos 014300,China;Harbin Institute of Technology,Harbin 150001,China)
出处
《节能技术》
CAS
2024年第3期274-278,共5页
Energy Conservation Technology
关键词
汽轮发电机组
阀门管理故障
配汽规律
优化改造
无扰切换
设备故障
turbo-generator set
valve management failure
steam distribution law
optimization and transformation
undisturbed switching
equipment failure
