西门子超(超)临界汽轮机DEH控制系统优化

Optimization of DEH Control System for Siemens Ultra-supercriticalSteam Turbine

通过介绍上汽—西门子1000 MW汽轮机的运行特点,针对DEH(数字电液控制)系统日常运行及调试期间出现的故障,详细剖析了DEH系统出现故障的原因,并对主蒸汽压力回路、压力控制器切初压模式、转速/负荷控制器和压力控制器切换方式等进行优化,提高了机组的稳定性,同时,为国内同种类型的机组提供参考和借鉴。

This paper introduces the operation characteristics of the SAIC-Siemens 1000 MW steam turbine.Given the faults in daily operation and commissioning of DEH(digital electro-hydraulic)control system,fault causes of the DEH system are elaborated,and the main steam pressure loop,initial pressure switching mode of pressure controller,rotating speed/load controller and pressure controller are optimized,and thereby the unit stability is enhanced,providing a reference to the same type of units.