METHOD TO DIAGNOSE POWER PLANT DEGRADATION USING EFFICIENCY MODELS

    公开(公告)号:US20180187574A1

    公开(公告)日:2018-07-05

    申请号:US15450899

    申请日:2017-03-06

    Abstract: A monitoring system of a combined cycle power plant having a topping cycle performed by a gas turbine and a bottoming cycle performed by a steam turbine, the monitoring system. The monitoring system includes a processor that receives a first set of data indicating a first measurement value of an operating parameter of the combined cycle power plant. The processor determines a baseline efficiency of the process based on the first measurement value using a bottoming cycle performance (BCP) model. The processor determines a threshold based on the baseline efficiency. The processor receives a second set of data indicating a second measurement value of the operating parameter. The processor compare the threshold to an operational efficiency based on the second measurement value using the BCP model, and provides an indication of a decrease in efficiency of the process if the operational efficiency is below the threshold.

    SYSTEMS AND METHODS FOR PREDICTING AN ANOMALY IN A COMBUSTOR

    公开(公告)号:US20190032510A1

    公开(公告)日:2019-01-31

    申请号:US16077138

    申请日:2017-02-01

    Abstract: A method for predicting an anomaly in a combustor (16) is presented. The method includes receiving signals representative of parameters in one or more combustion cans (22, 24) of the combustor, generating a plurality of patterns based on a permutation entropy window and the signals, identifying a plurality of pattern categories in the plurality of patterns, determining a permutation entropy based on the plurality of patterns and the plurality of pattern categories, and predicting an anomaly in the combustor based on the permutation entropy. The method further includes comparing the plurality of pattern categories to determined permutations of pattern categories if the anomaly is present in the combustor, and predicting a category of the anomaly based on the comparison of the plurality of pattern categories to the determined permutations of pattern categories.

    MODEL-BASED FEED FORWARD APPROACH TO COORDINATED AIR-FUEL CONTROL ON A GAS TURBINE
    4.
    发明申请
    MODEL-BASED FEED FORWARD APPROACH TO COORDINATED AIR-FUEL CONTROL ON A GAS TURBINE 有权
    基于模型的进料方法对气体涡轮机协调的空气燃料控制

    公开(公告)号:US20150240726A1

    公开(公告)日:2015-08-27

    申请号:US14190181

    申请日:2014-02-26

    Abstract: Presented herein are turbine machines, turbine control systems, methods, and computer-readable storage devices for controlling turbines including a compressor, a combustion system, and a turbine section comprising a turbine operating at an initial turbine output while using initial parameter values for the respective control parameters of the turbine. The techniques involve, for respective selected control parameters, selecting an adjustment of the initial parameter value of the selected control parameter, and predicting a predicted turbine output of the turbine operated using the adjustment of the selected control parameter and the initial parameter values for other control parameters; comparing the predicted turbine outputs for the adjustments of the respective control parameters to select, from the control parameters, a target control parameter having a target adjustment that results in the target turbine output; and operating the turbine with the target adjustment of the target control parameter.

    Abstract translation: 这里提出的是用于控制涡轮机的涡轮机,涡轮机控制系统,方法和计算机可读存储装置,包括压缩机,燃烧系统和涡轮机部分,其包括在初始涡轮机输出处操作的涡轮机,同时使用相应的初始参数值 涡轮机的控制参数。 这些技术涉及对于各个所选择的控制参数,选择所选择的控制参数的初始参数值的调整,并且使用所选择的控制参数的调整和用于其他控制的初始参数值来预测所操作的涡轮机的预测涡轮机输出 参数; 比较预测的涡轮机输出用于各个控制参数的调整,从控制参数中选择具有导致目标涡轮机输出的目标调节的目标控制参数; 并且利用目标控制参数的目标调整来操作涡轮机。

    Method to diagnose power plant degradation using efficiency models

    公开(公告)号:US10704427B2

    公开(公告)日:2020-07-07

    申请号:US15450899

    申请日:2017-03-06

    Abstract: A monitoring system of a combined cycle power plant having a topping cycle performed by a gas turbine and a bottoming cycle performed by a steam turbine, the monitoring system. The monitoring system includes a processor that receives a first set of data indicating a first measurement value of an operating parameter of the combined cycle power plant. The processor determines a baseline efficiency of the process based on the first measurement value using a bottoming cycle performance (BCP) model. The processor determines a threshold based on the baseline efficiency. The processor receives a second set of data indicating a second measurement value of the operating parameter. The processor compare the threshold to an operational efficiency based on the second measurement value using the BCP model, and provides an indication of a decrease in efficiency of the process if the operational efficiency is below the threshold.

    Systems and methods for compressor anomaly prediction

    公开(公告)号:US10662959B2

    公开(公告)日:2020-05-26

    申请号:US15473776

    申请日:2017-03-30

    Abstract: A non-transitory computer-readable storage medium storing one or more processor-executable instructions wherein the one or more instructions, when executed by a processor of a controller, cause acts to be performed including receiving signals representative of pressure between respective compressor blade tips and a casing of a compressor at one or more stages, generating multiple patterns based on a permutation entropy window and the signals, identifying multiple pattern categories in the multiple patterns, determining a permutation entropy based on the multiple patterns and the multiple pattern categories, predicting an anomaly in the compressor based on the permutation entropy, comparing the multiple pattern categories to determined permutations of pattern categories when an anomaly is present in the compressor, and predicting a category of the anomaly based on the comparison of the multiple pattern categories to the determined permutation of pattern categories.

    Systems and methods for icing detection of compressors

    公开(公告)号:US10508597B2

    公开(公告)日:2019-12-17

    申请号:US15485944

    申请日:2017-04-12

    Abstract: A system includes a controller coupled to an inlet bleed heat system of a compressor. The controller is configured to detect an icing condition of an inlet portion of the compressor by determining a current compressor efficiency value of the compressor, a current compressor flow value of the compressor, or any combination thereof, comparing the current compressor efficiency value to a compressor efficiency model of the compressor, the current compressor flow value to a compressor flow model of the compressor, or any combination thereof, and providing an icing indication to the inlet bleed heat system if a first difference between the current compressor efficiency value and the compressor efficiency model is greater than a first threshold, a second difference between the current compressor flow value and the compressor flow model is greater than a second threshold, or any combination thereof.

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