论文部分内容阅读
给水控制系统是火力发电厂非常重要的控制子系统,稳定的汽包水位是汽包锅炉安全运行的重要指标。目前使用的火电厂给水控制系统存在着各自的不足之处,往往难以满足火电机组复杂工况的要求。本文首先分析了给水控制对象运行特性,接着分析了给水控制系统存在的问题。对三冲量给水调节提出了状态前馈一反馈的优化设计方案。经过优化设计后的给水控制系统在实验室仿真调试后,运行稳定、可靠,能较好地满足在给水正常情况和异常情况下的控制要求,具有较高的实用价值。
The water supply control system is a very important control subsystem of the thermal power plant. The stable drum water level is an important indicator of the safe operation of the drum boiler. At present, thermal power plant water supply control system has its own shortcomings, often difficult to meet the requirements of thermal power plant complex conditions. This paper first analyzes the operation characteristics of water supply control object, and then analyzes the existing problems of water supply control system. Optimized design scheme of state feedforward and one-feedback is proposed for three-impulse feedwater regulation. After the optimized design of the water supply control system in the laboratory simulation debugging, the operation is stable and reliable, can better meet the control requirements under normal conditions and abnormal conditions of water supply, with high practical value.