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Gas turbine sensor fault-tolerant control method based on linear variable parameter model

A linear variable parameter, gas turbine technology, applied in adaptive control, comprehensive plant control, machine/engine, etc., can solve the problems of increased system complexity and maintenance workload, increased system weight and cost, hardware redundancy, etc. The effect of reducing maintenance costs, ensuring accuracy, and simplifying the calculation process

Active Publication Date: 2019-12-24
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

This approach is effective but leads to increased system weight and cost, increased system complexity and maintenance workload, and sometimes hardware redundancy cannot be achieved due to structural constraints

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  • Gas turbine sensor fault-tolerant control method based on linear variable parameter model
  • Gas turbine sensor fault-tolerant control method based on linear variable parameter model
  • Gas turbine sensor fault-tolerant control method based on linear variable parameter model

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0019] The sensor fault-tolerant control method based on the gas turbine linear variable parameter model of the present invention does not need to change the hardware structure, and the calculated value of the corresponding parameter of the gas turbine linear variable parameter model that has been verified by accuracy is used as a reference for the sensor parameter. When the deviation between the two is too large At this time, the failure of the sensor or the occurrence of a failure trend can be judged. At this time, the output of the reference model is used to isolate and reconstruct the faulty sensor to ensure that the gas turbine completes the control task and prevents the occurrence of dangerous situations.

[0020] Th...

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Abstract

The invention discloses a gas turbine sensor fault-tolerant control method based on a linear variable parameter model. The method comprises the steps: building a linear variable parameter model of a gas turbine and carrying out real-time simulation on the operation state of the gas turbine; determining a fault gain of a sensor according to the deviation between a measured value and the output of the linear variable parameter model and judging whether the sensor fails or not; and isolating and reconstructing the fault sensor. When the gas turbine sensor has a fault or a fault trend, isolation and parameter reconstruction are carried out on the fault sensor by the linear variable parameter reference mode. The gas turbine completes the control task normally; a phenomenon that the normal operation and the service life of the gas turbine are affected by emergency treatment measures such as tripping is avoided; the performance and the reliability of a gas turbine control system are guaranteed; and the maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the field of gas turbine sensor control, in particular to a gas turbine sensor fault-tolerant control method based on a linear variable parameter model. Background technique [0002] As the input parameters of the gas turbine control system, the measured value of the sensor is an important basis for the control system to increase or decrease the fuel volume, the action of the adjustable stator vane, and the actions of various valve groups. It is an indispensable component for the gas turbine control system to realize the control function. When a sensor fails, the gas turbine control system may make wrong judgments based on the faulty sensor instructions, which can easily cause disastrous consequences. Therefore, the state judgment of a large number of sensors on the gas turbine and the signal reconstruction technology at the time of failure are particularly important. important. The real-time diagnosis and isolation and recons...

Claims

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Application Information

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IPC IPC(8): G05B13/04F01D21/00
CPCG05B13/042F01D21/003Y02P90/02
Inventor 田震刘月付经伦刘智睿
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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