小汽机数字电液控制系统的优化设计与实施
发布时间：2019-06-25 17:13
【摘要】：自20世纪80年代,汽轮机DEH即数字电液控制系统逐渐成为汽轮机主流控制系统,并随着技术日趋成熟,该系统开始应用于小汽轮机。此次优化的小汽轮机调速系统原是由WOODWARD505数字调速器及其辅助接口设备完成,后经过十几年运行,该调速系统存在于控制系统及油系统的问题缺陷越来越多,且维修成本非常高,影响汽动给水泵的正常运行。为此我厂对其进行优化改造,并付诸实施。本论文以此次优化改造为说明对象,分析原505数字调速器功能,我厂汽轮机运行情况,介绍最终通过系统优化完全取消505调速器,将505所有功能移植在集散控制系统DCS中,使原有控制功能和诊断功能更加完善,改造后的小机控制系统简称MEH。该系统优化改造后多年运行中稳定可靠。本文为小汽机调速系统的优化改造提供一个实例,也可为其他使用505调速器设备的控制系统升级提供一定参考。
[Abstract]:In the 1980 's, the DEH, digital electro-hydraulic control system of the steam turbine gradually became the main control system of the steam turbine, and as the technology became more and more mature, the system started to be applied to the small steam turbine. The optimized small turbine speed regulation system was completed by the WOODWARD505 digital speed regulator and its auxiliary interface equipment. After more than ten years of operation, the problem of the speed-regulating system in the control system and the oil system is more and more, and the maintenance cost is very high, affecting the normal operation of the steam-driven feed pump. To this end, we have optimized the project and put it into practice. The paper takes this optimization as an explanatory object, analyzes the function of the original 505 digital speed regulator and the operation condition of the steam turbine of our plant, and introduces the final elimination of the 505 speed regulator through the system optimization, and all the functions of 505 are transplanted in the DCS of the distributed control system. So that the original control function and the diagnosis function are more perfect, and the modified small machine control system is referred to as MEH. And the system is stable and reliable for a plurality of years after the system optimization is modified. This paper provides an example for the optimization and reconstruction of the small turbine speed regulation system, and can also provide some reference for other control system upgrades using 505 speed governor equipment.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM311;TP273
本文编号：2505853
[Abstract]:In the 1980 's, the DEH, digital electro-hydraulic control system of the steam turbine gradually became the main control system of the steam turbine, and as the technology became more and more mature, the system started to be applied to the small steam turbine. The optimized small turbine speed regulation system was completed by the WOODWARD505 digital speed regulator and its auxiliary interface equipment. After more than ten years of operation, the problem of the speed-regulating system in the control system and the oil system is more and more, and the maintenance cost is very high, affecting the normal operation of the steam-driven feed pump. To this end, we have optimized the project and put it into practice. The paper takes this optimization as an explanatory object, analyzes the function of the original 505 digital speed regulator and the operation condition of the steam turbine of our plant, and introduces the final elimination of the 505 speed regulator through the system optimization, and all the functions of 505 are transplanted in the DCS of the distributed control system. So that the original control function and the diagnosis function are more perfect, and the modified small machine control system is referred to as MEH. And the system is stable and reliable for a plurality of years after the system optimization is modified. This paper provides an example for the optimization and reconstruction of the small turbine speed regulation system, and can also provide some reference for other control system upgrades using 505 speed governor equipment.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM311;TP273
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