汽轮机调节阀振荡异常诊断及处理  

Diagnosis and Treatment of Abnormal Oscillation of Steam Turbine Control Valve

作　　者：李冰天 LI Bingtian(Cental South Electric Power Test Research Institute,China Datang Corporation Science and Technology General Research Institute Ltd.,Zhengzhou 450000,China)

机构地区：[1]中国大唐集团科学技术研究总院有限公司中南电力试验研究院,河南郑州450000

出　　处：《电工技术》2023年第23期225-227,共3页Electric Engineering

摘　　要：针对某350 MW供热机组运行过程中出现了功率低频振荡异常情况,经现场检查、分析发现主要原因是局部转速不等率严重偏小、GV3高调门存在较大空行程致使流量特性偏离正常、PSS未投入等。采取修复GV3高调门及调节参数优化等措施处理后,基本解决了一次调频动作时的功率波动问题。An abnormal low-frequency power oscillation occurred during the operation of a 350 MW heat supply unit.Through on-site inspection and analysis,it was found that the main reasons for power oscillation were the serious decrease of local speed inequality,deviation of flow characteristics induced by the large empty travel of GV3 high regulating valve,and the failure to put PSS into operation;After taking measures such as repairing the GV3 high modulation gate and optimizing the adjustment parameters,power fluctuation problem during primary frequency modulation action was generally solved.

关 键 词：功率低频振荡 一次调频 高调门 转速不等率 PSS 

分 类 号：TM611[电气工程—电力系统及自动化]