scholarly journals Increase of Manoeuvrability of Nuclear Power Units by the Production of Magnegas During the Decline of Electro-Consumption

2019 ◽  
pp. 68-74
Author(s):  
V. A. Dubkosky ◽  
A. V. Korolov ◽  
Y. O. Komarova
Keyword(s):  
Power System ◽  
Gas Turbine ◽  
Nuclear Power ◽  
Power Plants ◽  
Turbine Unit ◽  
Gas Turbine Unit ◽  
Peak Loads ◽  
Power Yield ◽  
The Cost ◽  
Turbine Installation

Nuclear power plants successfully competitive today with other types of generation of electric power yield to them on the indexes of manoeuvrability, as they were initially projected for work in the base modes. Today the grid of Ukraine sets the problem before NPP in the obligatory participating in adjusting of power. In the article the different methods of participation of NPP are considered in adjusting of power of power system: receipt of синтез-газа with the use of warmth of HTGR, different ways of manoeuvring of power of reactors of VVER – 1000, using for the accumulation of warmth the effects of absorption and desorption of ammonia in water, - chart of WARM; charts of distant теплоснабжения from NPP are WATT (ammonia water transport of warmth). The calculation comparing of efficiency of different charts of manoeuvring of power of power system and comparison of them is executed to магнегаз-технологией. It is shown that the use for the aims of coverage of peak-loads in modern grids with the use of options of magnegas-technology most effectively and expediently. The efficiency of such installations was 42%. The cost of producing magnegas for a gas turbine installation is 3441483 UAH, when it comes from the sale of electricity generated at a gas turbine unit due to the combustion of magnegas 498319110 UAH.

scholarly journals Effect of Turbine and Compressor Inlet Temperatures and Air Bleeding on the Comparative Performance of Simple and Combined Gas Turbine Unit

2020 ◽  
Vol 5 (12) ◽  
pp. 39-45
Author(s):  
Basharat Salim ◽  
Jamal Orfi ◽  
Shaker Saeed Alaqel
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Energy Demand ◽  
Power Plants ◽  
Turbine Unit ◽  
Combined Cycle ◽  
Inlet Temperature ◽  
Gas Turbine Unit ◽  
The World ◽  
Compressor Inlet

The proper utilization of all the available forms of energy resources has become imminent to meet the power requirement and energy demand in both the developed and developing countries of the world. Even though the emphasis is given to the renewable resources in most parts of the world, but fossil fuels will still remain the main resources of energy as these can meet both normal and peak demands. Saudi Arab has number of power plant based on natural gas and fuel that are spread in all its regions. These power plants have aeroderivative gas turbine units supplied by General Electric Company as main power producing units. These units work on dual fuel systems. These units work as simple gas turbine units to meat peak demands and as part of combined cycle otherwise. The subject matter of this study is the performance of one of the units of a power plant situated near Riyadh city of Saudi Arab. This unit also works both as simple gas turbine unit and as a part of combined cycle power plant unit. A parametric based performance evaluation of the unit has been carried out to study both energetic and exergetic performance of the unit for both simple and combined cycle operation. Effect of compressor inlet temperature, turbine inlet temperature, pressure ratio of the compressor, the stage from which bleed off air have been taken and percentage of bleed off air from the compressor on the energetic and exergetic performance of the unit have been studied. The study reveals that all these parameters effect the performance of the unit in both modes of operation.

scholarly journals Technical and economic assessment of the parameters of thermal schemes of thermal power plants with a hydrogen generator

2021 ◽  
Vol 23 (2) ◽  
pp. 84-92
Author(s):  
G. E. Marin ◽  
B. M. Osipov ◽  
A. R. Akhmetshin
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Turbine Unit ◽  
Thermal Power ◽  
Component Composition ◽  
Automated System ◽  
Gas Turbine Unit ◽  
Turbine Plant ◽  
Gas Turbine Plant

THE PURPOSE. The study is aimed at studying the effect of fuel gases of various component composition on the environmental performance of the GE 6FA gas turbine unit. Consider using hydrogen as primary sweat to minimize emissions and improve performance of the GE 6FA gas turbine. METHODS. To achieve this goal, the ASGRET (Automated system for gas-dynamic calculations of power turbomachines) software package was used. RESULTS. The article discusses promising directions for the utilization of CO2 using highly efficient technologies with further use or disposal. A mathematical model of a GE 6FA gas turbine unit, diagrams of changes in the main characteristics and the composition of emissions when operating on various types of fuel, including hydrogen, are presented. CONCLUSION. The studies carried out show that a change in the component composition of the gas affects the energy characteristics of the engine. The method for determining the quantitative composition of COx, NOx, SOx in the exhaust gases of a gas turbine plant is presented. The transition to the reserve fuel kerosene leads to an increase in the amount of emissions, which must be taken into account when designing systems for capturing harmful emissions with a dual-fuel fuel gas supply system. The use of hydrogen as a fuel for gas turbines allows to reduce not only the cost of fuel preparation, but also to minimize emissions and improve the performance of the gas turbine plant.

Torsional Oscillations in a Gas Turbine Unit and the Possibility of Collapse of an Isolated Power System

2017 ◽  
Vol 51 (2) ◽  
pp. 211-215 ◽  
Author(s):  
E. S. Trunin ◽  
V. M. Tarakanov ◽  
S. P. Boikin ◽  
S. I. Smirnov ◽  
D. S. Genvarev
Keyword(s):  
Power System ◽  
Gas Turbine ◽  
Turbine Unit ◽  
Gas Turbine Unit ◽  
Torsional Oscillations

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.

Synthesis and Analysis of a Combined Magnetic and Gas Dynamic Suspension for a Model Range of New-Generation High-Speed Micro Gas Turbine Power Units

2021 ◽  
pp. 5-17
Author(s):  
Sergey A. GANDZHA ◽  
◽  
Nikolay I. NEUSTROEV ◽  
Pavel A. TARANENKO ◽  
◽  
...  
Keyword(s):  
Gas Turbine ◽  
High Speed ◽  
Turbine Unit ◽  
Electrical Machine ◽  
Gas Turbine Unit ◽  
Micro Gas Turbine ◽  
Gas Dynamic ◽  
Study Results ◽  
Generator Design ◽  
New Generation

The modern power industry is characterized by intense development of distributed generation, with which numerous sources of different capacities are connected into a single network. This makes it possible to improve the reliability of the entire system, since the probability of several sources to fail simultaneously is quite low. Electric generation based on high-speed gas turbine units accounts for a significant share in the overall balance, due to which scientific research and new engineering solutions in this area are important and relevant. An innovative design of a high-speed gas turbine unit based on a switched axial generator is proposed. This electrical machine has a diamagnetic armature, which eliminates magnetic losses, due to which better efficiency of the power unit is achieved and its design is simplified. The high speed of rotation and the presence of critical resonant rotor speeds generated the need to adopt appropriate engineering decisions in regard of its supports. A combined suspension involving the use of magnetic and gas-dynamic bearings is proposed. The magnetic bearings support the gas turbine unit operation at low speeds during its acceleration, and the gas-dynamic bearings support its operation at high nominal speed. The generator design and the combined suspension layout are shown. The numerical analyses of magnetic and gas-dynamic bearings for a gas turbine unit for a capacity of 100 kW and rotation speed of 70 000 rpm are given. The study results can be used for a series of gas turbine units with capacities ranging from 10 to 500 kW. In our opinion, this concept is competitive with modern analogs with a radial generator design.

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