摘要
火电厂汽轮机内湿蒸汽的存在对汽轮机经济、安全、可靠的运行造成严重的影响。以汽轮机内蒸汽湿度的准确测量为目的,设计了以微处理器MSP430为系统的控制和处理核心的控制系统,经实验表明,自动频率跟踪系统的跟踪频率达到kHz数量级,能够适应现行的湿度测量方案;等精度频率测量系统在标准频率为10 MHz时,分辨率可达到10-7,也满足了系统设计要求。最后给出了频率偏移和蒸汽湿度的关系图,证明控制系统设计的重要性。
The existence of wetness in steam turbine has badly effect steam turbine to run in economically, security and reliably. For measuring the wetness of steam in a turbine perfectly, the control system that used MSP430 as the control and processing core is designed. Tested after experiment, the automatic frequency tracing system can track the resonant frequency well and get to kHz, can meet current steam wetness measurement scheme. While the equal precision measurement system, it＇ s resolution ratio can get to 10^-7 at the frequency of 10 MHz, also satisfied the requirement of wetness measurement system. Finally, the relation of wetness and frequency deflection is given out which proved the impotence of the design of control system.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2008年第5期89-92,共4页
Journal of North China Electric Power University：Natural Science Edition
基金
国家自然科学基金资助项目(50676031)
关键词
汽轮机
湿度测量
频率跟踪
等精度
多周期同步
steam turbine
steam wetness measurement
frequency tracing
equal precision
mult- cycle synchronization
