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Fault Tolerant Control of Nuclear Power Plant Steam Generator on Ovation System

Author: DengZhiHong
Tutor: ShiXiaoCheng
School: Harbin Engineering University
Course: Nuclear Energy Science and Engineering
Keywords: Ovation Steam generator Fault Diagnosis Fault Tolerant Control Kalman filter
CLC: TL353.13
Type: Master's thesis
Year: 2009
Downloads: 88
Quote: 3
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Abstract


The safe operation of the nuclear power plant control system has become an increasingly important issue in this context , this paper, fault diagnosis and fault tolerant control in nuclear power plant control system . Asked the three fault diagnosis program for nuclear power plant steam generator water level control system sensor fault reconstructed through the sensor fault diagnosis based on Active Fault Tolerant Control , Westinghouse Ovation DCS control system to achieve fault-tolerant control algorithm . The full text of the main research work are as follows : 1 , to establish a nonlinear mathematical model of the steam generator , and this model linearized at the equilibrium point , the mathematical model of linear steam generator . On this basis , the observer group design steam generator water level control system sensor fault diagnosis program . The diagnostic results based on the use of fault - free input observer state estimate the fault sensor output reconstruction of fault tolerance control . 2 , based on a the nonlinear the steam generators mathematical model to consider the system noise and measurement noise , using a set of input -constrained extended Kalman filter for the steam generator water level control system sensor fault diagnosis and fault tolerant control . Simulation results show that the method has good nonlinear fault-tolerant control effect . 3 , strong tracking filter to estimate the steam generator water level control system sensor fault deviation , the online diagnostic trouble and reconfigurable sensor measurements to achieve fault-tolerant control . The simulation results show that the method can diagnose deviations of random time-varying failure , and fault-tolerant control . 4 , will study the fault-tolerant control algorithm Ovaiton system . Ovation system in the steam generator water level control system fault-tolerant algorithms , the development of the man-machine interface , real - time communication program developed the PC side and Ovation workstations , connected with the model and fault diagnosis program running on the PC, and real-time simulation verification.

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CLC: > Industrial Technology > Nuclear technology > Engineering of Nuclear Reactors > Reactor components and the design, manufacture > Circuit and its equipment > Thermal equipment and cooling system > A steam generator and a heat exchanger
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