scholarly journals Highly Efficient Automated Control for an MGR Gas Turbine Power Plant

1991 ◽  
Author(s):  
X. L. Yan ◽  
L. M. Lidsky
Keyword(s):  
Control System ◽  
Power Plant ◽  
Gas Turbine ◽  
Power Output ◽  
Reactor Power ◽  
Outlet Temperature ◽  
Automated Control ◽  
Thermal Transients ◽  
Highly Efficient ◽  
Gas Turbine Power Plant

A control system design for the Modular High Temperature Gas-Cooled Reactor Gas Turbine power plant (MGR-GT) is presented. The control system is designed to provide full-scale automated control functions for power output regulation and plant protection in accordance with utility requirements for modular nuclear power plants. Control of the plant power output is based on a unique integration of inventory control and bypass control, which not only enables required load following capabilities but also offers 45% electric generating efficiency over the power ranges from 100% to 50% of the rated level. The reactor power is controlled based on the strategy of maintaining constant core outlet temperature. This approach minimizes the occurrence of thermal transients and temperature redistribution in the core during reactor power changes. In addition, the control system also provides emergency protective control to protect the plant components and to mitigate the likelihood of bounding safety events in case of severe accidents. The operation of the control system is automated by controllers implemented based on the state-space feedback control methodology. A spectrum of transients in both normal and far-off normal conditions has been simulated to evaluate the operability of the plant. The simulation results for a few selected events will be described. The design demonstrates that the MGR-GT is a highly efficient and robust controllable power plant.

scholarly journals Thermodynamics performance optimization of a hybrid solar gas turbine power plant in Colombia

2022 ◽  
Vol 2163 (1) ◽  
pp. 012004
Author(s):  
F Moreno-Gamboa ◽  
J C Acevedo-Paez ◽  
D Sanin-Villa
Keyword(s):  
Power Plant ◽  
Solar Radiation ◽  
Gas Turbine ◽  
Power Output ◽  
Performance Optimization ◽  
Pressure Ratio ◽  
Direct Solar Radiation ◽  
Performance Point ◽  
Overall Efficiency ◽  
Gas Turbine Power Plant

Abstract A thermodynamic model is presented for evaluation of a solar hybrid gas-turbine power plant. The model uses variable ambient temperature and estimates direct solar radiation at different day times. The plant is evaluated in Barranquilla, Colombia, with a solar concentration system and a combustion chamber that burns natural gas. The hybrid system enables to maintain almost constant the power output throughout day. The model allows optimizing the different plant parameters and evaluating maximum performance point. This work presents pressure ratio ranges where the maximum values of overall efficiency, power output, thermal engine efficiency and fuel conversion rate are found. The study is based on the environmental conditions of Barranquilla, Colombia. The results obtained shows that optimum pressure ratio range for power output and overall efficiency is between 6.4 and 8.3, when direct solar radiation its maximum at noon. This thermodynamic analysis is necessary to design new generations of solar thermal power plants.

scholarly journals Parametric Performance of Ultra-light Gas Turbine Power Plant for Heavy Lift Multicopters Flight Systems Using Astra - Russian Aviation Engine Optimization Software

2018 ◽  
Vol 220 ◽  
pp. 03011
Author(s):  
T. Aurthur Vimalachandran ◽  
Andrey Yurievich Tkachenko ◽  
Viktor Nikolaevich Rybakov
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Power Output ◽  
Thermal Efficiency ◽  
Parametric Analysis ◽  
Fuel Efficiency ◽  
Inlet Temperature ◽  
Maximum Output ◽  
Operation Condition ◽  
Gas Turbine Power Plant

A detailed parametric analysis was performed on entire performance cycle model of micro gas turbine power plant. The parametric analysis was studied using Russian Software named ASTRA. Evaluation of parameters on both design and operation condition was performed. The parameters focused here are power output, compression work, specific fuel consumption and thermal efficiency. Various stages such as use of Intercooler, Pre-heater and their optimal influence on thermodynamics were performed. The task was to optimize the maximum output in free turbine power by simulating various cycles of compressor pressure ratios for centrifugal compressor, ambient temperature in various altitude; air-fuel mix ratio and turbine inlet temperature. The results are analysed and presented in this article, the Analysis known as on-design analysis. The compressor uses 66% of turbine work output. The research analysis focuses on reducing the use of power output by compressor and maximizes the power output by free turbine. The results could be summarized as increase in gas turbine thermal efficiency does not always improve the gas turbine efficiency. Optimum power increase of up to 3% was improved and improvement in fuel efficiency improved about 4%.

Thermodynamic Optimization of a Gas Turbine Power Plant With Pressure Drop Irreversibilities

1998 ◽  
Vol 120 (3) ◽  
pp. 233-240 ◽  
Author(s):  
V. Radcenco ◽  
J. V. C. Vargas ◽  
A. Bejan
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Flow Rate ◽  
Power Output ◽  
Pressure Ratio ◽  
Plant Size ◽  
Fuel Flow Rate ◽  
Flow Area ◽  
Fuel Flow ◽  
Gas Turbine Power Plant

In this paper we show that the thermodynamic performance of a gas turbine power plant can be optimized by adjusting the flow rate and the distribution of pressure losses along the flow path. Specifically, we show that the power output has a maximum with respect to the fuel flow rate or any of the pressure drops. The maximized power output has additional maxima with respect to the overall pressure ratio and overall temperature ratio. When the optimization is performed subject to a fixed fuel flow rate, and the power plant size is constrained, the power output and efficiency can be maximized again by properly allocating the fixed total flow area among the compressor inlet and the turbine outlet.

scholarly journals One Step Ahead Adaptive Control for Gas Turbine Power Plants

1999 ◽  
Author(s):  
S. M. Camporeale ◽  
L. Dambrosio ◽  
B. Fortunato
Keyword(s):  
Control System ◽  
Power Plant ◽  
Gas Turbine ◽  
Linear Model ◽  
Transfer Functions ◽  
Control Technique ◽  
Steady State Condition ◽  
Wide Range ◽  
One Step ◽  
Gas Turbine Power Plant

The feasibility of the application of One Step Ahead Adaptive (OSAA) Control technique to a gas turbine power plant is investigated. The OSAA technique is a control algorithm especially suitable for non-linear and time-varying systems. This technique uses the Least Square algorithm to estimate in real-time a linear model of the controlled system, and, uses the estimated linear model to evaluate the feedback control variables. The proposed technique allows to control the Gas Turbine power plant in a wide range of electric loads due to its intrinsic adaptive capabilities. Moreover, the OSAA control does not require the knowledge of the dynamic characteristics (e.g. state space systems or transfer functions) in order to design the control system. The OSAA control system has been applied to a single shaft Gas Turbine power plant, which is numerically simulated. The proposed control technique has been tested both in Single-Input Single Output (SISO) mode and in Multi-Input Multi-Output (MIMO) mode. Starting from a steady-state condition, the power plant has been supposed to undergo a step reduction of the electric load. The results show that the OSAA control technique effectively counteracts the load reduction with limited overshoots in the controlled variables and, introducing a integral correction, a negligible static error.

scholarly journals Control of a Gas Turbine HTGR

1976 ◽  
Author(s):  
F. Openshaw ◽  
E. Estrine ◽  
M. Croft
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Selection Process ◽  
Reactor Power ◽  
Plant Component ◽  
Thermal Transients ◽  
Component Design ◽  
Turbine Speed ◽  
System Selection ◽  
And Control

This paper presents a description of the control and protective preliminary system designs for the gas turbine high-temperature gas-cooled reactor power plant (GT-HTGR). The purpose of these systems is the control and safe operation of the plant in accordance with utility practice for large nuclear generation stations, and in the event of an abnormal or accident condition to shut the plant down in an orderly manner and maintain it in a safe shutdown condition. The control system is designed to regulate reactor power, control electric load and turbine speed, control the temperature of the helium delivered to the turbines, and control thermal transients experienced by reactor internal components. In addition, it provides the required control and programming for start-up, shutdown, load ramp, and other expected operations. The control system also handles conditions imposed on the system during upset and emergency conditions, such as loop trip, reactor trip, or electrical load rejection. Under these conditions, reactor power and helium flow are reduced in order to minimize temperature transients imposed on reactor components. The transient analysis and control system selection process which has been used to establish the reference GT-HTGR control system is illustrated in this paper. The study demonstrates not only the design of adequate control, but also reduced severity of plant component design requirements imposed by transient events.

scholarly journals Software-modeling complex for automation tests of low and medium power turbo electric tests

2019 ◽  
Vol 140 ◽  
pp. 05012
Author(s):  
Boris Kavalerov ◽  
Grigory Kilin ◽  
Evgeniy Zhdanovskiy
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Power Plant ◽  
Gas Turbine ◽  
Power Plants ◽  
Turbine Unit ◽  
Electric Power Industry ◽  
Software Modeling ◽  
Gas Turbine Unit ◽  
Gas Turbine Power Plant

There are many problems connected with use of gas turbine units for electricity generation. The main problem is the gas turbine unit inefficient operation as a synchronous generator drive. To ensure the required quality of the generated electricity, which is largely determined by the nature of the transient processes of gas turbine unit, further improvement of control algorithms for automated control systems of gas turbine unit is required. In solving this problem, gas turbine unit should be considered in conjunction with other subsystems and units, for gas turbine power plants - this is, first of all, the electric generator and electric power industry in general. The process of tuning a gas turbine power plant control system is part of the test. Particularly time-consuming operations are manual tuning of the control system during experimental design and operational tests. Therefore, we propose to use a software-modeling complex, on the basis of which it is possible to obtain a neural network mathematical model of a gas turbine electro station and conduct its tests. In this case, in the process of testing the control system, the setup procedure is first performed on a mathematical model, then the settings obtained are checked using semi-bench testing, the final check of the decisions taken is carried out on a full-scale test bench, and data on the direct operation of a gas turbine power plant are also taken into account.

scholarly journals One-Step-Ahead Adaptive Control for Gas Turbine Power Plants

2002 ◽  
Vol 124 (2) ◽  
pp. 341-348 ◽  
Author(s):  
S. M. Camporeale ◽  
L. Dambrosio and ◽  
B. Fortunato
Keyword(s):  
Control System ◽  
Power Plant ◽  
Gas Turbine ◽  
Linear Model ◽  
Transfer Functions ◽  
Control Technique ◽  
Steady State Condition ◽  
Wide Range ◽  
One Step ◽  
Gas Turbine Power Plant

The feasibility of the application of One-Step-Ahead Adaptive (OSAA) Control technique to a gas turbine power plant is investigated. The OSAA technique is a control algorithm especially suitable for nonlinear and time-varying systems. This technique uses the least square algorithm to estimate in real-time a linear model of the controlled system and uses the estimated linear model to evaluate the feedback control variables. The proposed technique allows to control the gas turbine power plant in a wide range of electric loads due to its intrinsic adaptive capabilities. Moreover, the OSAA control does not require the knowledge of the dynamic characteristics (e.g., state space systems or transfer functions) in order to design the control system. The OSAA control system has been applied to a single shaft gas turbine power plant, which is numerically simulated. The proposed control technique has been tested both in Single-Input Single Output (SISO) mode and in Multi-Input Multi-Output (MIMO) mode. Starting from a steady-state condition, the power plant has been supposed to undergo a step reduction of the electric load. The results show that the OSAA control technique effectively counteracts the load reduction with limited overshoots in the controlled variables and, introducing an integral correction with a negligible static error.

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