Mathematical Modelling and Simulation of the Behaviour of the Steam Turbine

Dulău, Mircea; Bică, Dorin

doi:10.1016/j.protcy.2013.12.555

Cited by 23 publications

(11 citation statements)

References 8 publications

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“…En muchos casos, el modelo dinámico de una turbina de vapor se simplifica; las variables intermedias se omiten y todo queda con base en las variables de entrada y salida [8]. La potencia mecánica desarrollada por una turbina sin secciones de recalentamiento se basa en una ecuación de continuidad (1) El generador DC de excitación independiente presenta la ventaja que el campo del estator es constante al no depender de la carga del motor, y el par de fuerza es prácticamente constante [9].…”

Section: Modelo Dinámico De La Turbina De Vaporunclassified

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Diseño de un sistema de control avanzado para regular la velocidad de una turbina de vapor acoplada a un generador DC

González-Acevedo¹,

González-Acuña²

2018

Iteckne

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Diseño de un sistema de control avanzado para regular la velocidad de una turbina de vapor acoplada a un generador DC Advanced controller design for speed control in a steam turbine coupled to DC generator Resumen− El artículo presenta la metodología para el diseño de dos estrategias de control, LQG (Linear Quadratic Gaussian Control) y DMPC (Discrete Time Model Predictive Control), para regular la velocidad de una turbina de vapor acoplada a un generador DC de excitación independiente. La dinámica del sistema es representada por un modelo lineal en el cual los parámetros del modelo se calculan a partir de un algoritmo de optimización. Las estrategias de control se implementan en el sistema de control distribuido (DCS), Delta V. El objetivo es mantener constante la velocidad ante variaciones de la presión en la tubería de vapor y modificación de la resistencia del bobinado de campo del generador DC.Palabras clave− Turbina de vapor, generador DC, control LQG, control DMPC.Abstract− The paper presents the methodology for the design of two control strategies, LQG (Linear-Quadratic-Gaussian Control) and DMPC (Discrete Time Model Predictive Control), for speed control in a steam turbine coupled to separately excited DC generator. The dynamics of the system is represented by a linear model in which the model parameters are calculated using an optimization algorithm. The control strategies were implemented on a distributed control system (DCS), Delta V. The goal is to maintain the speed constant despite the variation of pressure in the steam pipeline and changes in the field resistance of the DC generator.

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Section: Modelo Dinámico De La Turbina De Vaporunclassified

“…El torque de la turbina es proporcional al flujo másico de vapor y se muestra en(7) k1 es una constante proporcional. El flujo másico de vapor se controla por medio de una válvula proporcional, cuya dinámica se define en(8), donde k2 es un constante de proporcionalidad, el retardo de la válvula y Td el porcentaje de apertura de la válvula.…”

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Diseño de un sistema de control avanzado para regular la velocidad de una turbina de vapor acoplada a un generador DC

González-Acevedo¹,

González-Acuña²

2018

Iteckne

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“…In particular, by using a regression analysis [8], one may, based on different initial information, receive single or multifactor equations. The simulation results of a turbine [9] are essential for correct operation of the system of dynamic analysis and control of its power. A model of a spiral heat exchanger was developed, which takes into account different modes of heat transfer [10] and allows designing a heat exchanger, which will ensure the best heat transfer at minimal metal consumption.…”

Section: Scientific Literature Analysis and The Problem Statementmentioning

confidence: 99%

Development of mathematical models and the calculations of elements of convective heat transfer systems

Mysak

Galyanchuk

Kuznetsova

2016

EEJET

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“…The turbine is the equipment where the internal energy of high temperature and pressure steam transforms into mechanical energy [8]. In RELAP5, the modified energy, momentum, and continuity equations have been used to calculate the stages of turbine.…”

Section: Secondary Circuit Model Descriptionmentioning

confidence: 99%

Full Scope Modeling and Analysis on the Secondary Circuit of Chinese Large-Capacity Advanced PWR Based on RELAP5 Code

Zhang

Sui

et al. 2015

Science and Technology of Nuclear Installations

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Chinese large-capacity advanced PWR under construction in China is a new and indispensable reactor type in the developing process of NPP fields. At the same time of NPP construction, accident sequences prediction and operators training are in progress. Since there are some possible events such as feedwater pumps trip in secondary circuit may lead to severe accident in NPP, training simulators and engineering simulators of CI are necessary. And, with an increasing proportion of nuclear power in China, NPP will participate in regulating peak load in power network, which requires accuracy calculation and control of secondary circuit. In order to achieve real-time and full scope simulation in the power change transient and accident scenarios, RELAP5/MOD 3.4 code has been adopted to model the secondary circuit for its advantage of high calculation accuracy. This paper describes the model of steady state and turbine load transient from 100% to 40% of secondary circuit using RELAP5 and provides a reasonable equivalent method to solve the calculation divergence problem caused by dramatic two-phase condition change while guaranteeing the heat transfer efficiency. The validation of the parameters shows that all the errors between the calculation values and design values are reasonable and acceptable.

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Mathematical Modelling and Simulation of the Behaviour of the Steam Turbine

Cited by 23 publications

References 8 publications

Diseño de un sistema de control avanzado para regular la velocidad de una turbina de vapor acoplada a un generador DC

Diseño de un sistema de control avanzado para regular la velocidad de una turbina de vapor acoplada a un generador DC

Development of mathematical models and the calculations of elements of convective heat transfer systems

Full Scope Modeling and Analysis on the Secondary Circuit of Chinese Large-Capacity Advanced PWR Based on RELAP5 Code

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