三菱冗余系统在锅炉汽包液位控制中的应用

为了保证蒸汽锅炉的安全运行,将汽包液位保持在规定的范围内,采用了模糊三冲量串级控制方法对蒸汽锅炉的水位进行控制,并通过使用三菱冗余过程控制系统及其先进的远程I/O光纤网络和以太网络,实现了对某电厂两台锅炉汽包液位控制的改进,极好地解决了“虚假水位”的问题,并且改变了原有汽包水位控制自动化程度较低的状况,使整个锅炉系统的稳定性和可靠性得到提高,取得了较好的应用效果。

Application of Mitsubishi Redundant System in Drum Level Control in Steam Boiler

To keep the drum level to vary within specified limits and the steam boiler to run in a normal way,the drum level control problem is discussed.The controller of the drum level of two boilers in a power plant is designed by using the redundant system,remote I/O network and Misubishi Ethernet,based on the fuzzy control of the cascade-three element system theory.Problem of "illusive level"is solved,and the whole boiler system runs in a more stable and more reliable status.