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1.发明申请公开(公告)号：US20080302102A1
公开(公告)日：2008-12-11
申请号：US11759805
申请日：2007-06-07
Applicant: Xu Cheng , Charles H. Menten , Richard W. Kephart
Inventor： Xu Cheng , Charles H. Menten , Richard W. Kephart
IPC: F01K7/32
Abstract: A technique of controlling a boiler system such as that used in a power generation plant includes using manipulated variables associated with or control inputs to a reheater section of the boiler system to control the operation of the furnace, and in particular to control the fuel/air mixture provided to the furnace or the fuel to feedwater ratio used in the furnace or boiler. In the case of a once-through boiler type of boiler system, using the burner tilt position, damper position or reheater spray amount to control the fuel/air mixture or the fuel to feedwater flow ratio of the system provides better unit operational efficiency.
Abstract translation: 控制诸如在发电厂中使用的锅炉系统的技术包括使用与锅炉系统的再热器部分相关联或控制输入的操作变量来控制炉的操作，特别是控制燃料/空气 提供给炉子的混合物或者在炉子或锅炉中使用的燃料与给水比例。 在直流锅炉式锅炉系统的情况下，使用燃烧器倾斜位置，阻尼器位置或再热器喷雾量来控制燃料/空气混合物或燃料与系统的给水流量比提供更好的单元运行效率。
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公开(公告)号：US07826908B2
公开(公告)日：2010-11-02
申请号：US11934633
申请日：2007-11-02
Applicant: Xu Cheng , Charles H. Menten , Richard W. Kephart
Inventor： Xu Cheng , Charles H. Menten , Richard W. Kephart
CPC classification number: G05B13/021 , G05B2219/41221 , G05B2219/41435
Abstract: A method of controlling a power generating unit or other process equipment with a slow reaction time includes creating a feedforward control signal to selectively include a fast response rate component or a slow response rate component based on the average rate at which a load demand set point signal has changed during a particular previous period of time. The method then uses the developed feedforward control signal to control the power generating equipment or other slowly reacting process equipment. In particular, a control method switches between introducing a fast or a slow response component within a feedforward control signal based on whether the change in the load demand set point over a particular period of time in the past (e.g., an average rate of change of the load demand set point signal) is greater than or less than a predetermined threshold. This method is capable of providing a relatively fast control action even if the expected load demand set point change is in a small range. In addition, this method does not require knowledge of the final or target load demand set point during the time in which the load demand set point is ramping up to a final target value and is not dependent on the ramp size, i.e., the ultimate difference between the load demand set point at the beginning of the load demand set point change and the final or target value of the load demand set point, making it more versatile than prior art systems.
Abstract translation: 控制具有缓慢反应时间的发电单元或其他处理设备的方法包括：创建前馈控制信号，以根据负载需求设定点信号的平均速率选择性地包括快速响应速率分量或慢响应速率分量 在特定的前一段时间内发生了变化。 该方法然后使用开发的前馈控制信号来控制发电设备或其他缓慢反应的过程设备。 特别地，控制方法基于过去特定时间段内的负载需求设定点的变化（例如，平均变化率）是否在前馈控制信号中引入快速或慢速响应分量之间切换 负载需求设定点信号）大于或小于预定阈值。 即使预期的负载需求设定点变化在小范围内，该方法也能够提供相对较快的控制动作。 此外，该方法在负载需求设定点上升到最终目标值并且不依赖于斜坡大小的时间内，不需要知道最终或目标负载需求设定点，即最终差异 在负载需求设定点开始时的负载需求设定点变化和负载需求设定点的最终或目标值之间，使其比现有技术系统更加通用。
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3.发明授权公开(公告)号：US08104283B2
公开(公告)日：2012-01-31
申请号：US11759805
申请日：2007-06-07
Applicant: Xu Cheng , Charles H. Menten , Richard W. Kephart
Inventor： Xu Cheng , Charles H. Menten , Richard W. Kephart
IPC: F01K7/34
Abstract: A technique of controlling a boiler system such as that used in a power generation plant includes using manipulated variables associated with or control inputs to a reheater section of the boiler system to control the operation of the furnace, and in particular to control the fuel/air mixture provided to the furnace or the fuel to feedwater ratio used in the furnace or boiler. In the case of a once-through boiler type of boiler system, using the burner tilt position, damper position or reheater spray amount to control the fuel/air mixture or the fuel to feedwater flow ratio of the system provides better unit operational efficiency.
Abstract translation: 控制诸如在发电厂中使用的锅炉系统的技术包括使用与锅炉系统的再热器部分相关联或控制输入的操作变量来控制炉的操作，特别是控制燃料/空气 提供给炉子的混合物或者在炉子或锅炉中使用的燃料与给水比例。 在直流锅炉式锅炉系统的情况下，使用燃烧器倾斜位置，阻尼器位置或再热器喷雾量来控制燃料/空气混合物或燃料与系统的给水流量比提供更好的单元运行效率。
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公开(公告)号：US07668623B2
公开(公告)日：2010-02-23
申请号：US11780969
申请日：2007-07-20
Applicant: Richard W. Kephart , Charles H. Menten
Inventor： Richard W. Kephart , Charles H. Menten
CPC classification number: G05D23/19
Abstract: The disclosure is directed to a saturated water spraying system configured to rapidly respond to rapid load changes by implementing a single integrated DCS control block. The integrate DCS control block may include a plurality of process control routines that are necessary to control the operation of the spraying system. For example, upstream and downstream PID control routines may determine and output control variables, and other control routines may be provided as necessary to handle disturbances within a boiler affecting the outlet and spray steam temperatures, and to ensure that the steam temperatures do not fall into the saturation region during operation of the boiler. Because the routines are part of the same control block, the common storage for the control block may be accessed by each of the routines without the necessity of establishing additional communication links for transferring the information as is required when using cascaded function blocks.
Abstract translation: 本公开涉及一种饱和喷水系统，其配置为通过实施单个集成DCS控制块来快速响应快速负载变化。 集成DCS控制块可以包括控制喷涂系统的操作所必需的多个过程控制程序。 例如，上游和下游PID控制程序可以确定和输出控制变量，并且可以根据需要提供其他控制程序来处理影响出口和喷雾蒸汽温度的锅炉内的干扰，并且确保蒸汽温度不落入 在锅炉运行期间的饱和区域。 由于该例程是相同控制块的一部分，所以控制块的公共存储器可以由每个程序进行访问，而不需要为使用级联功能块所需要的传输信息建立附加通信链路。
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公开(公告)号：US09606531B2
公开(公告)日：2017-03-28
申请号：US12628821
申请日：2009-12-01
Applicant: Xu Cheng , Richard W. Kephart , Cheng T. Wen , B. Erik Ydstie
Inventor： Xu Cheng , Richard W. Kephart , Cheng T. Wen , B. Erik Ydstie
IPC: G06G7/48 , G05B19/418
CPC classification number: G05B19/41885 , G05B2219/32345 , G05B2219/32357 , Y02P90/18 , Y02P90/26
Abstract: A high fidelity distributed plant simulation technique includes a plurality of separate simulation modules that may be stored and executed separately in different computing devices. The simulation modules communicate directly with one another to perform accurate simulation of a plant, without requiring a centralized coordinator to coordinate the operation of the simulation system. In particular, numerous simulation modules are created, with each simulation module including a model of an associated plant element and being stored in different drops of a computer network to perform distributed simulation of a plant or a portion of a plant. At least some of the simulation modules, when executing, perform mass flow balances taking into account process variables associated with adjacent simulation modules to thereby assure pressure, temperature and flow balancing.
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Patent Agency Ranking
公开(公告)号：US08527252B2
公开(公告)日：2013-09-03
申请号：US11495812
申请日：2006-07-28
Applicant: Richard W. Kephart , Xu Cheng , Steven J. Schilling , Robert L. Yeager
Inventor： Richard W. Kephart , Xu Cheng , Steven J. Schilling , Robert L. Yeager
CPC classification number: G05B19/41885 , Y02P90/18 , Y02P90/26
Abstract: A process control system simulation technique performs real-time simulation of an actual process control network as that network is running within a process plant in a manner that is synchronized with the operation of the actual process control network. This real-time, synchronized simulation system includes a simulation process control network and a process model which are automatically updated periodically during the operation of the actual process control network to reflect changes made to the process control network, as well as to account for changes in the plant itself, i.e., changes which require an updated process model. The simulation system provides for more readily accessible and usable simulation activities, as the process control network and the process models used within the simulation system are synchronized with and up-to-date with respect to the current process operating conditions.
Abstract translation: 过程控制系统模拟技术以与网络在实际过程控制网络的操作同步的方式在流程工厂内运行的实际过程控制网络进行实时仿真。 这种实时同步的仿真系统包括模拟过程控制网络和过程模型，它们在实际过程控制网络的操作期间周期性地自动更新，以反映对过程控制网络所做的更改，并考虑到变更 植物本身，即需要更新过程模型的变化。 模拟系统提供了更容易访问和可用的模拟活动，因为过程控制网络和模拟系统中使用的过程模型与当前过程操作条件同步并且是最新的。
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公开(公告)号：US20110131017A1
公开(公告)日：2011-06-02
申请号：US12628821
申请日：2009-12-01
Applicant: Xu Cheng , Richard W. Kephart , Cheng Tao Wen , B. Erik Ydstie
Inventor： Xu Cheng , Richard W. Kephart , Cheng Tao Wen , B. Erik Ydstie
CPC classification number: G05B19/41885 , G05B2219/32345 , G05B2219/32357 , Y02P90/18 , Y02P90/26
Abstract: A high fidelity distributed plant simulation technique includes a plurality of separate simulation modules that may be stored and executed separately in different drops or computing devices. The simulation modules communicate directly with one another to perform accurate simulation of a plant, without requiring a centralized coordinator to coordinate the operation of the simulation system. In particular, numerous simulation modules are created, with each simulation module including a model of an associated plant element and these simulation modules are stored in different drops of a computer network to perform distributed simulation of a plant or a portion of a plant. At least some of the simulation modules, when executing, perform mass flow balances taking into account process variables associated with adjacent simulation modules to thereby assure pressure, temperature and flow balancing (i.e., conservation of mass flow) through the entire simulation system. In a dynamic situation, a transient mass storage relay technique is used to account for transient changes in mass flow through any non-storage devices being simulated by the simulation modules. Moreover, adjacent simulation modules located in different drops communicate directly with one another using a background processing task, which simplifies communications between adjacent simulation modules without the need for a central coordinator.
Abstract translation: 高保真分布式工厂模拟技术包括多个单独的模拟模块，可以在不同的液滴或计算装置中单独存储和执行。 仿真模块直接相互通信，对工厂进行精确的仿真，无需集中式协调器来协调仿真系统的运行。 特别地，创建了许多模拟模块，每个模拟模块包括相关植物元件的模型，并且这些模拟模块被存储在计算机网络的不同液滴中，以对植物或植物的一部分进行分布式模拟。 至少一些仿真模块在执行时，考虑到与相邻模拟模块相关联的过程变量来执行质量流量平衡，从而通过整个模拟系统确保压力，温度和流量平衡（即质量流量的保持）。 在动态情况下，使用瞬态大容量存储继电器技术来解释通过仿真模块模拟的任何非存储器件的质量流量的瞬态变化。 此外，位于不同液滴中的相邻模拟模块使用后台处理任务直接相互通信，这简化了相邻模拟模块之间的通信，而无需中央协调器。
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8.发明授权Method for redundant controller synchronization for bump-less failover during normal and program mismatch conditions 有权冗余控制器同步的方法，用于在正常和程序不匹配条件下进行无凹陷故障转移公开(公告)号：US08359112B2
公开(公告)日：2013-01-22
申请号：US11331886
申请日：2006-01-13
Applicant: Richard W. Kephart , Kimberly Costlow , Michael Durbin , Xu Cheng , Richard Brown
Inventor： Richard W. Kephart , Kimberly Costlow , Michael Durbin , Xu Cheng , Richard Brown
CPC classification number: G05B9/03 , G06F11/2028 , G06F11/2038 , G06F11/2097
Abstract: The present invention relates generally to process control systems and devices and, more particularly, to an apparatus for and a method of implementing redundant controller synchronization for bump-less failover during normal and mismatch conditions at the redundant controllers. The redundant controllers are configured to transmit state information of the process control areas of the primary controller to the backup controller that is necessary for synchronizing the redundant controllers but is not typically transmitted to other devices during the performance of process control functions. Synchronization messages are transmitted from the primary controller to the backup controller each time one of the control areas executes to perform process control functions. In other aspects, the redundant controllers are configured to determine state information at the backup controller from other process control network information during a failover of the primary controller where a mismatch condition exists between the control areas of the two controllers during the downloading of reconfigurations, and to initialize the backup controller at startup when the mismatch condition exists.
Abstract translation: 本发明一般涉及过程控制系统和设备，更具体地，涉及一种在冗余控制器的正常和不匹配条件下实现冗余控制器同步以实现无凸起故障转移的装置和方法。 冗余控制器被配置为将主控制器的过程控制区域的状态信息传送到备份控制器，该备份控制器是在执行过程控制功能期间通常不发送到其他设备的同步冗余控制器所必需的。 每次执行一个控制区域以执行过程控制功能时，同步消息从主控制器发送到备用控制器。 在其他方面，冗余控制器被配置为在主控制器的故障切换期间从其他过程控制网络信息确定备用控制器的状态信息，其中在重新配置的下载期间两个控制器的控制区域之间存在不匹配条件，以及 当不匹配条件存在时，在启动时初始化备份控制器。
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公开(公告)号：US20080027704A1
公开(公告)日：2008-01-31
申请号：US11495812
申请日：2006-07-28
Applicant: Richard W. Kephart , Xu Cheng , Steven J. Schilling , Robert L. Yeager
Inventor： Richard W. Kephart , Xu Cheng , Steven J. Schilling , Robert L. Yeager
IPC: G06F9/45
CPC classification number: G05B19/41885 , Y02P90/18 , Y02P90/26
Abstract: A process control system simulation technique performs real-time simulation of an actual process control network as that network is running within a process plant in a manner that is synchronized with the operation of the actual process control network. This real-time, synchronized simulation system includes a simulation process control network and a process model which are automatically updated periodically during the operation of the actual process control network to reflect changes made to the process control network, as well as to account for changes in the plant itself, i.e., changes which require an updated process model. The disclosed simulation system provides for more readily accessible and usable simulation activities, as the process control network and the process models used within the simulation system are synchronized with and up-to-date with respect to the current process operating conditions. Moreover, this simulation system is more accurate as it uses process models developed from the current state of the process whenever the simulation system beings to perform a simulation. Still further, the disclosed simulation system is easy to operate, as it uses the same user interface applications as the actual process control network and can be initialized and used at any time during operation the process plant without any significant configuration or set-up activities.
Abstract translation: 过程控制系统模拟技术以与网络在实际过程控制网络的操作同步的方式在流程工厂内运行的实际过程控制网络进行实时仿真。 这种实时同步的仿真系统包括模拟过程控制网络和过程模型，它们在实际过程控制网络的操作期间周期性地自动更新，以反映对过程控制网络所做的更改，并考虑到变更 植物本身，即需要更新过程模型的变化。 所公开的模拟系统提供了更容易访问和可用的模拟活动，因为过程控制网络和模拟系统中使用的过程模型与当前过程操作条件同步并且是最新的。 此外，该模拟系统更准确，因为当模拟系统进行仿真时，它使用从当前状态开发的过程模型。 此外，所公开的模拟系统易于操作，因为它使用与实际过程控制网络相同的用户界面应用，并且可以在操作过程工厂期间的任何时间被初始化和使用，而没有任何显着的配置或设置活动。
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公开(公告)号：US07109446B1
公开(公告)日：2006-09-19
申请号：US11057657
申请日：2005-02-14
Applicant: Xu Cheng , Richard W. Kephart
Inventor： Xu Cheng , Richard W. Kephart
IPC: H05B1/02
CPC classification number: G05B13/021 , F22B37/56 , F28G15/003
Abstract: A system for analyzing the impact of operating soot blowers in a heat transfer section of a power plant determines a steam temperature influencing sequence and calculates a feed-forward signal to be applied to a steam temperature control system of the heat transfer section. The system operates a group of soot blowers for a number of times and collects quantitative data related to the steam temperature during and after each soot blowing operation. A computer program used by the system analyzes the quantitative data, generates a number of statistical parameters for evaluating the impact of operating the soot blowers according to a given sequence on the steam temperature, and determines whether the given sequence is a steam temperature influencing sequence. Consequently, the system determines a feed-forward signal based on the steam temperature influencing sequence and applies the feed-forward signal to a steam temperature control system used by the heat transfer section to compensate for any adverse impact of soot blowing.
Abstract translation: 用于分析在发电厂的传热部分中运行的吹灰器的影响的系统确定蒸汽温度影响序列，并计算要施加到传热部分的蒸汽温度控制系统的前馈信号。 该系统运行一批吹灰器多次，并在每次吹灰操作期间和之后收集与蒸汽温度相关的定量数据。 系统使用的计算机程序分析定量数据，生成多个统计参数，用于评估根据给定顺序操作吹灰器对蒸汽温度的影响，并确定给定顺序是否为蒸汽温度影响序列。 因此，系统基于蒸汽温度影响程序确定前馈信号，并将前馈信号应用于由传热部分使用的蒸汽温度控制系统，以补偿吹灰的任何不利影响。
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