The Research on Merging Control Strategy of COGAG Power Plant

2010 ◽  
Vol 159 ◽  
pp. 297-302
Author(s):  
Chun Ling Xie ◽  
Zhi Tao Wang
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Control Strategy ◽  
Dynamic Performance ◽  
Propulsion Systems ◽  
Running Performance ◽  
Research Production ◽  
And Control ◽  
Technology Foundation ◽  
Important Significance

The Combined gas turbine and gas turbine (COGAG) power plant has being favored more and more by the navies of various countries because of its unique advantages such as good mobility and small weight. Therefore, the research on marine integrated propulsion systems (IPS) will have an important significance. The paper will mainly simulate the running performance of generating electricity module of COGAG power plant. The most excellent project of collectivity structure dispose can be achieved by simulating the running performance of generating electricity module of COGAG power plant. Also we can achieve collectivity performance, the most excellent matching; characteristic matching technology of working condition conversing. Especially the dynamic performance and control strategy of generating electricity module of COGAG power plant were mastered. The finally research production can supply technology foundation for designing the generating electricity module of COGAG power plant.

Dynamic Simulation and Control Strategy for Three-Shaft Marine Electric Propulsion Gas Turbine

2010 ◽  
Author(s):  
Chenyu Wei ◽  
Shusheng Zang
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Control Strategy ◽  
Electric Propulsion ◽  
Dynamic Performance ◽  
Propulsion System ◽  
System Quality ◽  
Matching Problems ◽  
Electric Propulsion System ◽  
And Control

Three-shaft gas turbine was applied to marine electric propulsion system. The dynamic performance and control strategy of the three-shaft marine electric propulsion gas turbine arrested investigator’s attention, because they are very different from that of single-shaft gas turbine due to the complicated rotor structure. In this study, a model of nonlinear differential equation set is built to calculate the dynamic performance of three-shaft gas turbine and a simulation model of three-shaft marine electric propulsion gas turbine is constructed using the platform of MATLAB/SIMULINK. An adaptive software is developed for three-shaft gas turbine simulation. The new matching problems and changing rules among parameters are investigated in the case of load rejection of marine electric propulsion system. Multi-closed loop control system, instead of traditional control system, is introduced in order to improve the system quality and safety.

FFG7 Class Frigate and DD963 Class Destroyer Marine Gas Turbine Propulsion Systems Maintenance and Operational Training Facility

1985 ◽  
Vol 22 (01) ◽  
pp. 1-27
Author(s):  
Ralph J. Della Rocca ◽  
John D. Stehn
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Mechanical Equipment ◽  
Propulsion Systems ◽  
Electrical Systems ◽  
Training Facility ◽  
Hands On ◽  
Systems Maintenance ◽  
And Control ◽  
Major Emphasis

The need for a gas turbine training facility became apparent with the introduction into the U.S. Navy fleet of the first ships of the FFG7 Frigate and DD963 Destroyer Classes with gas turbine propulsion plants. This facility, constructed at the Great Lakes Naval Training Center, provides "hands-on" training for maintenance and operation of marine gas turbines and associated propulsion plant components and controls and their piping and electrical systems. The Navy intends to train at this facility approximately 1000 personnel per year in the use of their latest and newest propulsion plants. The design of the facility reproduces as closely as possible the existing machinery and control spaces of the two different classes of ships and integrates them into a single main building with the school and the mechanical equipment wings. This paper presents an overview of the need for well-trained, qualified naval personnel to man the expanding fleet of marine gas turbine propulsion systems, existing training facilities and the various stages in the development of the FFG7/DD963 Gas Turbine Maintenance and Operational Training Facility. In regard to the facility, the paper discusses the planning and managing of the project; development of the designs for the building and propulsion plants; construction of the building facilities and FFG7 plant; the fabrication, transportation and erection of the FFG7 within the building; and the testing and operation of the FFG7 plant since light-off. Major emphasis is given to the FFG7 plant since the DD963 plant is being reconsidered in conjunction with the CG47 upgrading and is awaiting a decision to proceed.

Experimental Study on Hydrodynamic Characteristics of Hydrofoil of the Birds Embedded in Marine Seismic Streamers

2010 ◽  
Author(s):  
Xiaoqing Zhang ◽  
Weijing Zhang ◽  
Jun Chen
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Reference Value ◽  
Attack Angle ◽  
Hydrodynamic Characteristics ◽  
Oil Exploitation ◽  
Exact Position ◽  
Marine Seismic ◽  
And Control ◽  
Important Significance

A “bird” is a device usually being used to control the depth and position of marine seismic streamers. Exact position of the streamers can effectively promote the precision, reduce the measured times and save the costs for marine seismic exploitation. So the “birds” have important significance to marine oil exploitation. A Hydrodynamic characters test concerning a new embedded bird has been introduced in this paper. And some useful hydrodynamic character-data of the hydrofoil are obtained, such as lift-attack angle diagram, resistance-attack angle diagram, torque-attack angle diagram. These data and diagrams are more helpful for studying on the embedded bird, including the control method and control strategy etc. Above all, the results of the test have significant reference value for the control of birds and marine seismic streamers.

scholarly journals Solar Thermal-Based ORC Power Plant for Micro Cogeneration – Performance Analysis and Control Strategy

2018 ◽  
Vol 148 ◽  
pp. 774-781 ◽  
Author(s):  
Diego Vittorini ◽  
Alessio Antonini ◽  
Roberto Cipollone ◽  
Roberto Carapellucci ◽  
Carlo Villante
Keyword(s):  
Power Plant ◽  
Performance Analysis ◽  
Control Strategy ◽  
Solar Thermal ◽  
And Control

TRANSEO Code for the Dynamic Performance Simulation of Micro Gas Turbine Cycles

2005 ◽  
Author(s):  
A. Traverso
Keyword(s):  
High Temperature ◽  
Gas Turbine ◽  
Dynamic Performance ◽  
Energy Systems ◽  
Theoretical Background ◽  
High Tech ◽  
Performance Simulation ◽  
Main Components ◽  
New Variables ◽  
And Control

In recent years microturbines and, more generally, small radial turbomachinery have been of great interest to the power industry due to their possible integration with advanced energy systems involving very high-tech components, such as high temperature fuel cells, high temperature ceramic heat exchangers and air saturators, which are still under development. Even if microturbine technology is already commercially available, when such an engine is inserted into a more complex plant there are at least two difficulties to be faced: firstly, guaranteeing the safe operation of the microturbine at all the operating points, including start-up and shut-down; and secondly, ensuring the proper feeding conditions to the main components of the cycle. In fact, additional components bring new variables to be monitored and require additional control devices and control systems. As a result, a flexible and modular simulation tool is extremely useful for the actual development of new cycles, where attention is mainly paid to the interaction of quasi-conventional turbomachinery with advanced components integrated in the same cycle. The TRANSEO code is a MATLAB-based modular tool for the transient performance simulation of conventional and advanced energy systems based on gas turbine and microturbine technology. This paper presents the theoretical background and the organization of the tool, showing the validation of results for a conventional recuperated microturbine.

scholarly journals Fuel Cell/Gas Turbine Hybrid System Control for Daily Load Profile and Ambient Condition Variation

2009 ◽  
Vol 132 (1) ◽  
Author(s):  
Rory A. Roberts ◽  
Jack Brouwer ◽  
G. Scott Samuelsen
Keyword(s):  
Fuel Cell ◽  
Power Plant ◽  
Gas Turbine ◽  
Hybrid System ◽  
Ambient Conditions ◽  
System Operation ◽  
Constant Power ◽  
Load Profile ◽  
And Control ◽  
Daily Load

Fuel Cell/Gas Turbine (FC/GT) hybrid technology is promising, but introduces challenges in system operation and control. For base-load applications, changes in ambient conditions perturb the system and it becomes difficult to maintain constant power production by the FC/GT system. If the FC/GT hybrid system is load-following, then the problem becomes even more complex. In the current study, a dynamic model of a FC/GT power plant is developed with system controls. Two cases are evaluated: (1) system controls are developed to maintain constant power and process control within acceptable constraints and (2) the FC/GT power plant is set in power following mode connected in parallel to the grid for a daily load profile scenario. Changing ambient conditions are employed in the dynamic analysis for both cases. With appropriate attention to design of the system itself and the control logic, the challenges for dynamic system operation and control can be addressed.

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