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1
Mukolyants, A. A., I. V. Sotnikova, D. K. Ergasheva, and A. A. Taubaldiev. "Expander-generator set for utilization of natural gas overpressure energy." E3S Web of Conferences 289 (2021): 07034. http://dx.doi.org/10.1051/e3sconf/202128907034.
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The article deals with the problem of using secondary energy resources in the system of transportation and distribution of natural gas, and the possibility of generating electricity without burning fuel by reducing high-pressure natural gas at gas distribution stations. The analysis of the influence of the gas temperature at the entrance to the expander - generator unit, as well as the dependence of the power of the expander - generator unit on the gas temperature and the temperature of the low-potential source is presented. Optimal temperatures are obtained at which the power of the expander-generator unit is maximal for the given gas parameters.
2
Gubarev, V.Ia., A.G. Arzamastsev, A.I. Sharapov, and A.Iu. Kartel. "Energy Efficiency Assessment of the Use of Expander-Generator Set in Cogeneration Systems." Problemele Energeticii Regionale 3(38) (December 15, 2018): 93–101. https://doi.org/10.5281/zenodo.2222376.
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The purpose of the article is to assess energy efficiency of the expander generator application in cogeneration systems. It demonstrates that the research works devoted to this subject do not take into account the effect that gas parameters after the expander have on operating efficiency of the main power generating equipment that leads to a distortion of the assessment of expander energy efficiency. The energy efficiency is determined by specific fuel savings resulting from the use of a circuit with an expander compared to the option of gas throttling. It shows that specific fuel saving is directly proportional to the increment value of the total specific useful work of the utility company when using expander generators. It was found that when using the expander at the cogeneration plant the total specific useful work increment is less than the specific work of the expander generator. It is shown that the energy effect magnitude from the use of circuits with an expander at cogeneration boilers depends on the ambient air temperature. For an expander at cogeneration boiler houses with gas piston internal combustion engines at air temperatures below the optimum mixture temperature, the total increment of the specific work is equal to the specific work of the expander, at higher temperatures, the increment of the total specific work can be several times greater than the specific work of the expander. The prospects of preheating gas before the expander at the considered utility companies were analyzed.
3
Mukolyans, A.A., I.V. Sotnikova, F.T. Shadibekova, and F.S. Saidov. "ECONOMIC EFFECT FROM THE INTRODUCTION OF AN EXPANDER-GENERATOR UNIT DURING THE UTILIZATION OF SECONDARY ENERGY RESOURCES." Annali d'Italia 31 (May 25, 2022): 135–39. https://doi.org/10.5281/zenodo.6579737.
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The results of the study of the problem of energy saving and energy supply show that at present, along with non-traditional energy sources, much attention is paid to the use of secondary energy resources in the form of excess pressure on main pipelines. The article discusses the expander-generator technology at the stations for lowering the pressure of main natural gas, which makes it possible to produce electricity with a high, in comparison with thermal stations, ecological indicator. An expander-generator set is a device in which the energy of the transported natural gas stream is converted first into mechanical energy in an expander and then into electrical energy in a generator. The calculation of the power of the expander - generator set at various values of the flow rate and the pressure difference was carried out, according to the results of which the payback period of the installation was determined and a comparative analysis of the economic effect from the introduction of this technology was given. On the basis of the results and analysis, the rational capacities of the expander - generating units were determined, at which the payback period of the installation would be minimal.
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Artyomovich, Mukolyants Arsen, Buranov Mardon Davronovich, Sotnikova Irina Vladimirovna, and Аzimova Munira Muminovna. "Analysis of the influence of the input parameters on the efficiency of the operation of the detander generator unit in the gas network system of the republic of Uzbekistan." E3S Web of Conferences 216 (2020): 01130. http://dx.doi.org/10.1051/e3sconf/202021601130.
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The article is devoted to the generally recognized dilemma of using secondary energy resources in the transportation and distribution of natural gas. At stations where throttle devices are used, excessive gas pressure as the main component of secondary energy resources for technological processes is practically not used. Currently, the replacement of throttle devices with turbo-expander units is determined by energy and economic efficiency. This is due to the fact that the use of excess gas pressure in the turbo expander both at gas distribution stations and at compressor stations of gas pipelines without preheating has not yet been widely used. Expander-generator technology is probably one of the most effective technologies for reducing the consumption of fuel and energy resources. The combination of expander-generator units with heat pump units contributes to the creation of highly efficient power generating complexes that can generate electricity without burning fuel. Expansion of high-pressure natural gas at gas distribution stations is one of the technologies for generating electricity without combustion. To determine the share of electric energy supplied to the electric network based on the expander-generator set in the gas supply system, an analytical dependence was determined. Based on this, an arithmetic model of the installation with single-stage expander-generator units and steam-compression heat pump units is proposed. All data will be presented in detail in this article.
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Mukolyants, A. A., I. V. Sotnikova, D. K. Ergasheva, F. T. Shadibekova, and A. A. Taubaldiev. "Heating of natural gas before expander - generator unit." Journal of Physics: Conference Series 2094, no. 5 (2021): 052049. http://dx.doi.org/10.1088/1742-6596/2094/5/052049.
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Abstract The article discusses the replacement of throttling at the stations of technological lowering of the pressure of main natural gas by an expander-generator technology that allows the production of a cheap one with high environmental indicators. The disadvantage of this method of generating electricity is a significant cooling of the gas at the outlet of the expander, which necessitates its heating. The efficiency of the expander-generator set is largely determined by the adopted gas heating scheme. Achieving such heating temperatures is possible only by using high-potential energy resources, which are present in the technological equipment of gas distribution stations in the form of gas heaters with an intermediate heat carrier, designed to heat gas before expansion. Calculations of the amount of fuel gas required for heating the main natural gas in front of the expander-generator unit at the gas distribution stations under consideration have been carried out. The results of the study of the influence of the temperature of gas heating in front of the expander on the consumption of fuel gas supplied for heating and the numbers of heaters are presented. An analytical dependence of the electric power of the heat pump installation on the difference between the total power consumption of the compressor and the power of the air turbine is obtained.
6
Babakin, A. D. "Use of an Expander-Generator Cycle in Fuel Gas Reduction Unit." Oil and Gas Technologies 147, no. 4 (2023): 62–64. http://dx.doi.org/10.32935/1815-2600-2023-147-4-62-64.
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The possibility of saving energy resources in the transport of natural gas is considered - one of the most energy- consuming resources, which is characterized by large losses of energy used. The proposed technical solution is based on the use of an expander generator set in the fuel and pulse gas preparation unit. Using the example of a compressor station, a scheme is proposed for installing an expander-generator unit (DGA) in the fuel gasreduction unit, with the help of which additional electricity and cold can be generated. At the same time, the heat of the cooled air is not discharged into the environment, that is. the operation of the installation is characterized by high environmental indicators. The paper presents the technical characteristics of the DGA used, as wellas the calculation of economic efficiency.
7
Wei, Dong, Ruochen Zhao, Yaxuan Xiong, and Mingxin Zuo. "Control Strategies for Gas Pressure Energy Recovery Systems." Journal of Advanced Computational Intelligence and Intelligent Informatics 26, no. 4 (2022): 590–99. http://dx.doi.org/10.20965/jaciii.2022.p0590.
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In gas transmission, the regulator needs to adjust the gas pressure from high to low. The pressure energy can be then recovered by an expander, and the expander can drive a generator to produce electricity. However, the gas pressure regulator system and generator torque process often present difficult adjustment of PI parameters, and strong non-linearity of the hysteresis comparator and switching table in the traditional direct torque control (DTC) cause difficulties in the controller design and lead to large fluctuations of the generator torque. This paper designs a model predictive controller (MPC) for the gas pressure regulator process to reduce generator torque fluctuations. Simultaneously, a fuzzy PI controller is designed for the generator rotational speed process, and an MPC controller is exploited for the torque process; they operate in a cascaded manner. The fuzzy PI controller is used to calculate the torque set point. And the MPC controller is designed to obtain the optimal voltage vector of the generator for improving control performance through time delay compensation. The simulation experimental results highlight that the fluctuation of the regulator outlet gas pressure is reduced by 7.9% and 8.1%, and the output torque range is reduced by 3.4% and 2.1% compared with the traditional PI control and fuzzy PI control, respectively. The generator torque fluctuation range is reduced by 82.3%, the rotational speed fluctuation range is reduced by 76.9%, and the three-phase current fluctuation range is reduced by 76.6% compared with the traditional DTC.
8
Mukolyants, A. A., M. D. Buranov, I. V. Sotnikova, and A. A. Taubaldiev. "Air heating in an air heat pump installation in the expander -generator set." IOP Conference Series: Materials Science and Engineering 1155, no. 1 (2021): 012080. http://dx.doi.org/10.1088/1757-899x/1155/1/012080.
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Кulinchenko, Heorhii, Andrii Panych, Andrii Masliennikov, and Petro Leontiev. "Research of the regulator of an expander-generator unit." Naukovij žurnal «Tehnìka ta energetika» 15, no. 3 (2024): 33–46. http://dx.doi.org/10.31548/machinery/3.2024.33.
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The relevance of research is determined by the tasks of increasing the efficiency of alternative and renewable energy power plants. The purpose of the work is to develop a method of coordinating the settings of the automatic excitation regulators and the speed of rotation of the rotor of the generator from the vortex installation of the expander-generator unit, which is part of the autonomous power consumption network. To achieve the goal, the methods of mathematical modelling in the MATLAB environment, physical modelling, processing of experimental data, theory of automatic control, theory of magnetic field, theory of electric machines, programming of microprocessor devices were used. Considering the need to expand the base of alternative energy sources, the task of controlling the energy plant for the utilization of excess pressure of gas transportation networks was considered. The study of the regulator of the expander-generator unit was based on a model reflecting the interaction of mechanical and electrical processes. A set of nonlinear differential equations corresponded to the description of these processes. Accurate consideration of nonlinearities of the considered control object complicates the implementation of the corresponding microprocessor control systems. Modelling is aimed at achieving a compromise between the required accuracy of object control and the possibilities of simplifying the object control structure. The use of experimental and datasheet data of the devices made it possible to evaluate the dynamics of turbine rotation and voltage generation, forming the factors for the untying of the control circuits. The use of MATLAB with the Lookup Table option made it possible to perform a multi-point linearization of the nonlinear description of the process, speeding up the modelling and adjustment of the regulator. This is important to incoordinate the settings of the frequency control loops and the output voltage, given the trade-off between the speed of the regulator and the minimization of oscillations in the generation frequency. Based on the obtained results, a regulator of the expander-generator unit was developed, which ensures the stabilization of the initial parameters of the unit under the conditions of electrical load disturbances. In practice, the obtained data can be used in the integration of renewable energy sources into the general energy system through the optimization of the operation of generators
10
Стребков, Александр, Aleksandr Strebkov, Александр Осипов, Aleksandr Osipov, Станислав Жавроцкий, and Stanislav Zhavrotskiy. "The influence of turboexpander equipment configuration on energy efficiency of fuel gas power potential using." Bulletin of Bryansk state technical university 2014, no. 4 (2014): 109–13. http://dx.doi.org/10.12737/23098.
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The calculations of energy efficiency of the power capacity of the fuel gas using a two-line circuit expander-generator set (DGS) with parallel distribution of gas flow between the cylinders of the unit as part of the utilization expansion turbine installation (UTDU). It is shown that taking into account of the assumptions is provided as a capacity increase of DGS, and, accordingly, the development of their energy and a reduction in the unit cost of fuel.
11
Kologrivov, Mykhailo, and Vitalii Buzovskyi. "Development of the system of energy and resource saving during the operation of the gas pumping unit." Technology audit and production reserves 5, no. 1(61) (2021): 18–24. http://dx.doi.org/10.15587/2706-5448.2021.239476.
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The object of research is the fuel gas system of a gas turbine engine. The study of the use of secondary energy resources of the gas-pumping unit at the compressor station of the main pipeline has been carried out. The work of a gas turbine engine, including the work of the fuel gas system, is considered. The main drawback of the fuel gas system is revealed – ineffective use of excess gas pressure. An informational analysis of the options that eliminate the identified drawback is carried out. It is shown that in order to eliminate the disadvantage, it is advisable to use a turbo-expander at the compressor station to utilize the excess pressure of the fuel gas. It is also shown that the operation of a fuel gas turboexpander to drive an additional air compressor as part of a gas turbine engine is impractical. An expander-generator set with the generation of additional electricity at the compressor station is recommended for use. Modeling the operation of the utilization system made it possible to recommend constructive proposals for its improvement. A schematic diagram of a system for the complex utilization of excess pressure of fuel gas and heat of combustion products from the operation of a gas turbine engine is proposed. The system of complex utilization includes parts-generator unit, heat exchanger for cooling process gas and heat exchanger for firing gas. Regenerative heating of fuel gas up to 250 °С reduces energy consumption for heating it up to the ignition temperature. A model of a robot installation of the type GPU 16/56-1.44 (Ukraine) is carried out. It is determined that when a component engine of the J-59 (Ukraine) type with a shaft power of 16 MW operates, it is possible to additionally receive 102 kW of electricity and save 64 m3/h of fuel gas. It is revealed that the subcooling of the process gas does not play a significant role in reducing energy consumption during its transportation. It is recommended to use the process gas to heat the cold fuel gas stream downstream of the turboexpander to positive temperatures. The integrated utilization system is not a simple connection of an expander-generator set and two heat exchangers along the flow of the fuel gas. As a result of its operation, a significant reduction in the consumption of fuel gas and electricity is achieved. The disadvantages that hinder the implementation of a comprehensive disposal system are identified. This is the use of equipment for generating electricity at a compressor station. It is uncharacteristic for the operation of the station and requires additional qualifications in service. It is also required that the characteristics of industrial expander-generator sets correspond to the fuel gas consumption of a gas turbine engine.
12
Zhang, Yongkang, Jinghui Song, and Yunfeng Xia. "Research on Performance Test Characteristics of Solar Energy ORC Generator Set." MATEC Web of Conferences 232 (2018): 04007. http://dx.doi.org/10.1051/matecconf/201823204007.
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In order to study the performance of low-temperature solar-powered ORC generator sets, a solar-powered ORC power generation test bench was designed and built. In the experiment, R-123 was used as the organic Rankine cycle working fluid, and the solar ORC power generation system was experimentally studied. The research results show that when the direct solar radiation intensity is about 400W, the temperature of the heat transfer oil at the outlet of the collector can reach 140 °C. When the temperature of the heat transfer oil at the outlet of the collector is around 110°C, the collector efficiency of the collector can reach about 60%. Under the heat source condition, when the power cycle part is switched from the basic cycle to the regenerative cycle mode, the collector heat collection efficiency can reach about 60%. Under the heat source condition, when the power cycle part is switched from the basic cycle mode to the regenerative cycle mode, the measured efficiency is increased from 9.3% to 10.8%, and the measured cycle efficiency is increased from 1.57% to 1.67%, which is an increase of 6.07%. The measured cycle system efficiency is about 10%, and the heat recovery mode is slightly higher than the basic cycle mode. The organic Rankine cycle performance under different working fluid flows was also investigated in the experiment. The maximum measured average power was 386.27 W when the working fluid flow was 6.88 kg·s. At a certain heat source temperature, as the flow rate of the working fluid increases, the inlet pressure of the expander increases, and the circulating output work also increases. Under a certain working fluid flow rate, as the temperature of the heat source increases, the temperature of the inlet of the expander increases, and the inlet pressure increases. the cycle output work also increased.
13
Kulinchenko, Heorhii, Viacheslav Zhurba, Andrii Panych, and Petro Leontiev. "Development of the method of constructing the expander turbine rotation speed regulator." Eastern-European Journal of Enterprise Technologies 2, no. 2 (122) (2023): 44–52. http://dx.doi.org/10.15587/1729-4061.2023.276587.
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The study is devoted to the expander turbine rotation speed regulator, considering the possibility of implementing this regulator on microprocessor automation tools. The use of expander-generator units in general improves energy saving indicators, and the ability to maintain the turbine shaft rotation speed within the specified limits, in turn, directly affects the indicators of the quality of the generated electricity. The expander turbine, as a control object, is described by non-linear equations, which determines the possibility of using regulators of different designs, and requires the selection of the most suitable one according to certain criteria. As part of the study, based on the tasks of practical implementation of the regulator on microprocessor devices, the expediency of reducing the transfer function of the model in the process of identifying the control object was confirmed. As a result of research on an experimental setup, it is shown that the use of a three-position relay regulator allows for regulation dynamics at the level of a classic PID regulator. An important result of the research is the stabilization of the turbine rotation speed, which affects the parameters of the electricity generated by the generator. The description of the control object was linearized by constructing a family of transfer functions for the operating points of the control range. For the construction of the turbine rotation speed regulator, the criterion of "minimum fluctuation of the parameter when changing its set value" is proposed. A regulator for a non-linear object with oscillatory features is built, which has a simple implementation and a cycle time of 1 ms. It makes it possible to reduce rotation speed fluctuations to 5 % and minimize the impact of rotation process disturbances
14
Heorhii, Kulinchenko, Zhurba Viacheslav, Panych Andrii, and Leontiev Petro. "Development of the method of constructing the expander turbine rotation speed regulator." Eastern-European Journal of Enterprise Technologies 2, no. 2(122) (2023): 44–52. https://doi.org/10.15587/1729-4061.2023.276587.
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The study is devoted to the expander turbine rotation speed regulator, considering the possibility of implementing this regulator on microprocessor automation tools. The use of expander-generator units in general improves energy saving indicators, and the ability to maintain the turbine shaft rotation speed within the specified limits, in turn, directly affects the indicators of the quality of the generated electricity. The expander turbine, as a control object, is described by non-linear equations, which determines the possibility of using regulators of different designs, and requires the selection of the most suitable one according to certain criteria. As part of the study, based on the tasks of practical implementation of the regulator on microprocessor devices, the expediency of reducing the transfer function of the model in the process of identifying the control object was confirmed. As a result of research on an experimental setup, it is shown that the use of a three-position relay regulator allows for regulation dynamics at the level of a classic PID regulator. An important result of the research is the stabilization of the turbine rotation speed, which affects the parameters of the electricity generated by the generator. The description of the control object was linearized by constructing a family of transfer functions for the operating points of the control range. For the construction of the turbine rotation speed regulator, the criterion of "minimum fluctuation of the parameter when changing its set value" is proposed. A regulator for a non-linear object with oscillatory features is built, which has a simple implementation and a cycle time of 1 ms. It makes it possible to reduce rotation speed fluctuations to 5 % and minimize the impact of rotation process disturbances
15
Mykhailo, Kologrivov, and Buzovskyi Vitalii. "Development of the system of energy and resource saving during the operation of the gas pumping unit." Technology Audit and Production Reserves 5, no. 1(61) (2021): 18–24. https://doi.org/10.15587/2706-5448.2021.239476.
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<em>The object of research is the fuel gas system of a gas turbine engine.</em> <em>The study of the use of secondary energy resources of the gas-pumping unit at the compressor station of the main pipeline has been carried out. The work of a gas turbine engine, including the work of the fuel gas system, is considered.</em> <em>The main drawback of the fuel gas system is revealed </em><em>–</em><em> ineffective use of excess gas pressure. An informational analysis of the options that eliminate the identified drawback is carried out. It is shown that in order to eliminate the disadvantage, it is advisable to use a turbo-expander at the compressor station to utilize the excess pressure of the fuel gas. It is also shown that the operation of a fuel gas turboexpander to drive an additional air compressor as part of a gas turbine engine is impractical. An expander-generator set with the generation of additional electricity at the compressor station is recommended for use.</em> <em>Modeling the operation of the utilization system made it possible to recommend constructive proposals for its improvement. A schematic diagram of a system for the complex utilization of excess pressure of fuel gas and heat of combustion products from the operation of a gas turbine engine is proposed. The system of complex utilization includes parts-generator unit, heat exchanger for cooling process gas and heat exchanger for firing gas. Regenerative heating of fuel gas up to 250</em><em> </em><em>°С reduces energy consumption for heating it up to the ignition temperature.</em> <em>A model of a robot installation of the type GPU 16/56-1.44 </em><em>(Ukraine) </em><em>is carried out. It is determined that when a component engine of the J</em><em>-</em><em>59 </em><em>(Ukraine) </em><em>type with a shaft power of 16</em><em> </em><em>MW operates, it is possible to additionally receive 102 kW of electricity and save 64</em><em> </em><em>m<sup>3</sup>/h of fuel gas. It is revealed that the subcooling of the process gas does not play a significant role in reducing energy consumption during its transportation. It is recommended to use the process gas to heat the cold fuel gas stream downstream of the turboexpander to positive temperatures. The integrated utilization system is not a simple connection of an expander-generator set and two heat exchangers along the flow of the fuel gas. As a result of its operation, a significant reduction in the consumption of fuel gas and electricity is achieved. The disadvantages that hinder the implementation of a comprehensive disposal system are identified. This is the use of equipment for generating electricity at a compressor station. It is uncharacteristic for the operation of the station and requires additional qualifications in service. It is also required that the characteristics of industrial expander-generator sets correspond to the fuel gas consumption of a gas turbine engine.</em>
16
Liu, Zhuxian, Zhong Wu, Yonghong Xu, Hongguang Zhang, Jian Zhang, and Fubin Yang. "Performance Investigation of Single–Piston Free Piston Expander–Linear Generator with Multi–Parameter Based on Simulation Model." Energies 15, no. 23 (2022): 9078. http://dx.doi.org/10.3390/en15239078.
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The structural design and operating strategy of a free piston expander–linear generator (FPE–LG) has a major impact on performance. In this paper, the simulation model of single–piston FPE–LG was built and verified by combining the structural parameters of the existing test rig with a set of kinetic and thermodynamic equations. On this basis, the influence of the design and operating parameters of the device on the performance was studied, while keeping other parameters fixed. Then, a sensitivity analysis of power output and operating frequency was carried out. The results show that within a certain range of external load and intake beginning position, increasing the diameter of the intake and exhaust pipes, or reducing the piston rod diameter can improve the power output. Within a certain range of frictional coefficient and intake time, increasing the cylinder diameter and intake pressure, or reducing the piston assembly mass and back electromotive force (EMF) constant can increase the operating frequency. Both the power output and the operating frequency are most sensitive to the cylinder diameter among the design parameters. Among the operating parameters, power output is the most sensitive to intake pressure, and operating frequency is the most sensitive to intake beginning position. The optimization of structural design and operation strategy in expander provides important guiding significance for ORC waste heat recovery system.
17
Wu, Yinghao, Xiankui Wen, Shihai Zhang, Qiang Fan, Huayang Ye, and Chao Wu. "Optimization of Load Rejection Regulation for Compressed Air Energy Storage." Energies 18, no. 2 (2025): 254. https://doi.org/10.3390/en18020254.
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Given the shortcomings of compressed air energy storage systems in emergency response in power auxiliary research, especially in the scenario of decoupling from the power grid, an in-depth analysis is conducted. A set of energy release stage models with 10 MW compressed air energy storage equipped with an anti-overspeed system are set up. This research mainly focuses on the speed control of the two stages of the decoupled compressed air energy storage system: the soaring speed and the system recovery standby. By analyzing the influence of different cut-off valve actions on the decoupled speed, it is concluded that the key factor of speed control is the isolated expander. After the speed is controlled, the main factors affecting the speed control in the system are analyzed. As long as the expander is cut off, the high-temperature and high-pressure air will remain in the internal pipe and the heat exchanger of the system, which will cause the speed of the generator to soar again. A new load rejection control strategy is proposed based on the above analysis, in which the speed is smoothly reduced to 3000 r/min by the cut-off valve at the front end of the expander, and the residual working fluid is discharged. The results show that the optimized load rejection strategy reduces the speed increment by 89% compared to the traditional strategy, and reduces the recovery standby practice by 65%. Under 75% load conditions, the optimized load rejection strategy reduces the speed increment by 87% and the recovery standby practice by 41% compared to the traditional strategy. At 50% load conditions, the optimized load rejection strategy reduces the speed increment and standby time by 86% and 33%, respectively, compared to the traditional strategy. The key speed control index of the optimized load rejection strategy is much better than the traditional strategy, which significantly improves the control effect of accident emergencies.
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Belousov, A. E., G. Kh Samigullin, and A. V. Kleimenov. "Modeling of Gaseodynamic Processes at a Pressure Reduction Point with the Use of a Volumetric Expander−Generator Set to Assure Safe Recycling of the Energy of Compressed Natural Gas." Chemical and Petroleum Engineering 54, no. 5-6 (2018): 392–98. http://dx.doi.org/10.1007/s10556-018-0492-1.
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Ткач, Михайло Романович, Борис Георгійович Тимошевський, Аркадій Юрійович Проскурін та Юрій Миколайович Галинкін. "ЕФЕКТИВНІСТЬ ЕНЕРГОТЕХНОЛОГІЧНОЇ УСТАНОВКИ ЩОДО ВИДОБУВАННЯ СІРКОВОДНЮ З ГЛИБИН ЧОРНОГО МОРЯ". Aerospace technic and technology, № 7 (31 серпня 2019): 50–57. http://dx.doi.org/10.32620/aktt.2019.7.06.
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The article discusses a promising energy-technology unit for the extraction of hydrogen sulfide from the deep waters of the Black Sea, which provides for raising the gas-liquid mixture from the depths by the gas-lift method using wave pulses to separate hydrogen sulfide in the gaseous state. The installation includes a supply line, which is lowered to the required depth, a supply pump, a coalescing separator, a seawater discharge line with a reduced concentration of hydrogen sulfide, a control valve, a hydrodynamic generator of mechanical vibrations, a lifting pipeline, a high pressure hydrogen sulfide separator, a hydraulic turbine, a low pressure hydrogen sulfide separator, seawater discharge pipe and hydrogen sulfide expander. This unit will improve the energy efficiency and operational reliability of the process of hydrogen sulfide production, as well as reduce the burden on the Black Sea environment. A mathematical model of this setup has been developed. The results obtained by the mathematical model adequately coincide with the known experimental ones. This suggests that it is possible to use the model to determine the parameters of the process for the extraction of hydrogen sulfide from the Black Sea. The parameters of the process for the extraction of hydrogen sulfide from the Black Sea in the depth range of the pipeline 0...1000 m at a temperature of 280...285 K. It has been established that increasing the gas content of seawater from 0 to 2.5 m3/m3 leads to a decrease in the pressure value by 2.2 MPa. A further increase in seawater gas content from 2.5 to 5.0 m3/m3 is accompanied by a decrease in pressure of another 1.6 MPa. Such a significant decrease in pressure at the inlet to the riser piping allows hydrogen sulfide and seawater to be obtained at a pressure that is substantially greater than atmospheric. The excess pressure at the outlet of the lifting pipeline is determined based on data obtained by the method of "equivalent length". When the seawater gas content is 2.5 m3/m3, the pipeline’s immersion depth is 250...1000 m, the value of the overpressure of substances at the exit of the lifting pipeline will be 0.2...0.45 MPa, and at 5 m3/m3 – 0.67...1.07 MPa, at 7.5 m3/m3 – 0.83...1.4 MPa and at 10 m3/m3 – 0.97...1.68 MPa.