公开(公告)号：US5517424A

公开(公告)日：1996-05-14

申请号：US221746

申请日：1994-03-31

申请人： Kenneth A. W. Marcelle ,  Kenneth H. Chiang ,  Paul K. Houpt ,  Piero P. Bonissone ,  Joseph Weiss

发明人： Kenneth A. W. Marcelle ,  Kenneth H. Chiang ,  Paul K. Houpt ,  Piero P. Bonissone ,  Joseph Weiss

IPC分类号： H02J3/00 ,  H02J3/12

CPC分类号： H02J3/00 ,  Y10S706/90 ,  Y10S706/907 ,  Y10T307/469

摘要： A method for automated control of a steam turbine during cyclic operation includes the steps of comparing current turbine loading with an anticipated load profile to generate a load error signal. Anticipated electrical load profiles correspond to the time of day, day of the week, month of the year, and historical data; operator input can vary such historical profiles as appropriate for unusual situations. The predicted load profile is categorized with respect to selected composite electrical load cycle profiles; weighted operating constraints are generated by means of a fuzzy inference calculation using electrical cycle profiles selected to correspond to the anticipated electrical load profile. Control signals for selected steam plant regulatory functions, such as steam supply valve position and boiler pressure, are produced by applying the fuzzy logic-generated weighted operating constraints and the load error signal so as to optimize turbine load-following efficacy, steam plant efficiency, and machinery stress reduction. These control signals are then applied to respective regulatory function actuators in the steam plant to implement the desired trajectory of steam plant operation.

摘要翻译： 在循环操作期间自动控制蒸汽轮机的方法包括将当前涡轮机负载与预期负载曲线进行比较以产生负载误差信号的步骤。 预期的电气负载曲线对应于一天中的时间，一周中的一天，一年中的一个月和历史数据; 操作员输入可以根据不寻常的情况改变这样的历史概况。 相对于所选择的复合电力负载循环曲线分类预测负载曲线; 通过使用选择为对应于预期电气负载曲线的电气循环轮廓的模糊推理计算来生成加权操作约束。 通过应用模糊逻辑生成的加权操作约束和负载误差信号来产生选定的蒸汽设备调节功能（如蒸汽供应阀位置和锅炉压力）的控制信号，以优化涡轮机负载跟随功效，蒸汽发电厂效率， 并减少机械应力。 然后将这些控制信号施加到蒸汽设备中的相应的调节功能致动器以实现蒸汽设备操作的期望轨迹。