660MW机组甩负荷试验时转速飞升过高原因分析  

Cause Analysis on High Rotation Speed Rising of 660 MW Units in Load Shedding Test

作　　者：王异成[1] 张宝[1] 丁阳俊[1] 吴文健[1] 

机构地区：[1]国网浙江省电力公司电力科学研究院,杭州310014

出　　处：《浙江电力》2015年第9期46-49,共4页Zhejiang Electric Power

摘　　要：介绍了某660 MW超超临界机组50%甩负荷试验过程,指出其存在转速飞升偏高的现象,分析认为根本原因是高压调节阀阀位控制偏差定值设定失当。结合生产实际,对高压调节阀阀位控制偏差定值的形成与修改进行了讨论,并指出对该定值的修改应格外慎重。The paper introduces 50% load shedding process of 660 MW uhra-supercritical units and indicates the high rotation speed rising. The paper believes the reason is inappropriate valve position control deviation settings of high pressure governing valve. In accordance with production practicality, the paper discusses formation and correction of valve position control deviation settings of high pressure governing valve and indicates that special attention to the correction of the settings must be paid.

关 键 词：660 MW机组 甩负荷 试验 防超速 

分 类 号：TM621[电气工程—电力系统及自动化]