针对某300 MW机组汽轮机主汽阀活动试验负荷波动剧烈的问题,建立了主汽阀活动试验时的汽轮机调节系统模型,该模型由包含主汽阀活动试验逻辑的电液调节系统模型、调节汽阀模型和考虑调节汽阀流量特性的汽轮机模型组成。依据模型分析了主...针对某300 MW机组汽轮机主汽阀活动试验负荷波动剧烈的问题,建立了主汽阀活动试验时的汽轮机调节系统模型,该模型由包含主汽阀活动试验逻辑的电液调节系统模型、调节汽阀模型和考虑调节汽阀流量特性的汽轮机模型组成。依据模型分析了主汽阀活动试验时负荷剧烈波动的原因,指出引起负荷波动的主要原因是控制方式、DEH(Digital Electric Hydraulic Control System)设置、机组特性的不匹配,通过仿真试验研究了解决该问题的控制优化方法,基于此方法指导实际机组的主汽阀活动试验。试验结果表明,经控制优化后主汽阀活动试验引起的负荷波动问题得到显著改善。展开更多
The structure and working principle of a hydraulic buffering valve for a power-shift transmission ZF-4WG308 were studied comprehensively, and a model of the hydraulic buffering valve was developed with AMESim. A bench...The structure and working principle of a hydraulic buffering valve for a power-shift transmission ZF-4WG308 were studied comprehensively, and a model of the hydraulic buffering valve was developed with AMESim. A bench test was conducted on a buffering valve for transmissions(ZF-4WG308) and the test results agree well with the simulated results. Further more, the influences of the key parameters of the valve on the buffering performance were also studied in details.展开更多
文摘针对某300 MW机组汽轮机主汽阀活动试验负荷波动剧烈的问题,建立了主汽阀活动试验时的汽轮机调节系统模型,该模型由包含主汽阀活动试验逻辑的电液调节系统模型、调节汽阀模型和考虑调节汽阀流量特性的汽轮机模型组成。依据模型分析了主汽阀活动试验时负荷剧烈波动的原因,指出引起负荷波动的主要原因是控制方式、DEH(Digital Electric Hydraulic Control System)设置、机组特性的不匹配,通过仿真试验研究了解决该问题的控制优化方法,基于此方法指导实际机组的主汽阀活动试验。试验结果表明,经控制优化后主汽阀活动试验引起的负荷波动问题得到显著改善。
基金Project(51077096)supported by the National Natural Science Foundation of ChinaProject(2012940-15-3)supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry
文摘The structure and working principle of a hydraulic buffering valve for a power-shift transmission ZF-4WG308 were studied comprehensively, and a model of the hydraulic buffering valve was developed with AMESim. A bench test was conducted on a buffering valve for transmissions(ZF-4WG308) and the test results agree well with the simulated results. Further more, the influences of the key parameters of the valve on the buffering performance were also studied in details.
