Design Of Power Generation System Research Articles

Study on the effect of PV tilt angle on power generation

The power generation of a photovoltaic (PV) system is significantly influenced by the tilt angle of the module. The system achieves the highest power efficiency when operated at the optimal tilt angle, which is typically considered in the design of system installation. In this study, the optimal tilt angle of photovoltaic (PV) modules is determined by using PVsyst software and analyzed through shadow simulation under specific boundary conditions. The study examines the power generation of photovoltaic (PV) panels at various inclination angles and illustrates the impact of inclination angle on PV panel power generation by using project-specific data. The study results indicate that the secondary optimization of the tilt angle by PVsyst, in conjunction with the geographic factors of a specific region in Hainan, reveals that the optimal installation tilt angle for maximum power generation benefit is 9°. This finding aligns with the best power generation and benefits from the actual installation, which is at 10° (adjacent to 9°). The conclusions drawn from the exploration emphasize the essential nature of EPC optimization for future projects, as it can serve as a valuable reference for the design of photovoltaic power generation systems.

Comparison of Actual Results and PVSyst Simulation in the Design of Off-Grid Solar Power Generation System (PLTS) in Karuni Village, Southwest Sumba

This research aims to compare the actual production with the simulations using the PVSyst software for the Off-Grid Solar Power Plant (PLTS) in Karuni Village, Southwest Sumba. The Off-Grid PLTS in Karuni Village is a vital solution for improving remote areas' electricity access. Actual energy production data from the PLTS were obtained from monitoring systems, while simulation results were obtained through PVSyst. The analysis results indicate a difference of approximately 10% between the actual and simulated results. It observed that it is influenced by variability in local weather conditions, maintenance, system management levels, and limitations of the simulation model. The implications of this research emphasize the importance of using accurate data in simulations, improving PLTS system maintenance, and developing more sophisticated simulation models. Recommendations for further research include further analysis of factors influencing the differences in results. This study provides valuable insights into the planning and management of Off-Grid PLTS. It offers perspectives on enhancing the accuracy of future PLTS system planning and management.

Numerical investigation of electricity generation potential by water circulating through three horizontal wells at Fengshun geothermal field in China

Fengshun geothermal field is the first medium and low temperature geothermal area in China, which is used for electricity generation. At present only vertical wells are employed to extract heat energy. After about 40 years of exploitation, the production temperature and rate are all declined. In this work, based on the hydrogeological data of the study area, the deep reservoir temperature and corresponding circulation depth of underground hot water are predicted with a silica thermometer. To fully develop the deep heat reservoir, we proposed a new heat exploitation scheme through three horizontal wells, computed the electricity generation potential and efficiency, and analyzed the main factors affecting heat production. The results indicate that under the reference conditions, the three horizontal well system attaches an electric power of 2.70–1.5 MW, a reservoir impedance of 0.13–0.27 MPa/(kg/s), a pump power of 0.29–1.16 MW, and energy efficiency of 7.34–1.30 during the reservoir lifetime of 43.6 years. Thus, this three-horizontal-well system has significant development potential in Fengshun deep geothermal reservoir. Sensitivity analysis indicates that water production rate, injection temperature and initial reservoir temperature have a significant impact on heat production performance. Reducing the water production rate and injection temperature within a certain range can improve energy efficiency. For the precise design of power generation systems and the accurate evaluation of production performance, field logging data is necessary.

Method for Spatiotemporal Solar Power Profile Estimation for a Proposed U.S.–Caribbean–South America Super Grid under Hurricanes

Solar photovoltaic (PV) generation technology stands out as a scalable and cost-effective solution to enable the transition toward decarbonization. However, PV solar output, beyond the daily solar irradiance variability and unavailability during nights, is very sensitive to weather events like hurricanes. Hurricanes nucleate massive amounts of clouds around their centers, shading hundreds of kilometers in their path, reducing PV power output. This research proposes a spatiotemporal method, implemented in MATLAB R2023b coding, to estimate the shading effect of hurricanes over a wide distribution of PV solar plants connected to a high-voltage power infrastructure called the U.S.–Caribbean–South America super grid. The complete interconnection of the U.S., the Caribbean, and South America results in the lowest power valley levels, i.e., an overall percentual reduction in PV power output caused by hurricane shading. The simulations assess the impact of hurricanes in 10 synthetic trajectories spanning from Texas to Florida. The Caribbean would also experience lower power valleys with expanded interconnectivity schemes. The U.S.–Caribbean–South America super grid reduces Caribbean variability from 37.8% to 8.9% in the case study. The proposed spatiotemporal method for PV power profile estimation is a valuable tool for future solar power generation expansion, transmission planning, and system design considering the impact of hurricanes.

Design and performance analysis of hydro and wind-based power and hydrogen generation system for sustainable development

Renewable energy sources have significance in combating global challenges. In this developed paper, the integration of the hydropower and wind turbine energy conversion system is designed and proposed. The foremost focus of this combined plant is to simultaneously generate clean power, hydrogen, and freshwater through a sustainable way. The developed innovative plant embraced a hydropower plant, wind turbines, a Proton Exchange Membrane unit, and a Reverse osmosis desalination unit. To determine the system performance, detailed thermodynamic performance modeling and sustainability index evaluation are fulfilled on the plant’s indicators. In light of this purpose, several parameters are used to conduct the irreversibility rate, energetic and exergetic efficiency, and other calculations. Along with the examination results, the electricity production rate is calculated as 81591 kW. Moreover, the developed combined system has 61.29 % energetic performance and 57.14 % exergetic performance. The sustainability index value is figured out as 2.33 for the entire system.

Studies on the thermal cycle performance of solar thermal power generation under different heat sources

Solar thermal power generation is an important way to solve the future power demand, and some countries have entered the commercial application stage. According to the heat source temperatures provided by different solar thermal collector systems, different thermodynamic cycle modes of power generation systems were proposed so that the appropriate thermal cycle modes and working mediums at different heat source temperatures were obtained. The results show that, under a low-temperature heat source, in an organic Rankine cycle with R600 as the working medium, the cycle efficiency is 13.40% when the temperature of the turbine inlet is 100°C and the pressure is 1.5 MPa; the cycle thermal efficiency is 12.00% when the temperature of turbine inlet is 90°C. Under the conditions of medium temperature heat source, in the Rankine cycle with regenerative heat and R141b as a working medium, the efficiency is about 26.59% when the temperature of the turbine inlet is 220°C and the pressure is 3.0 MPa. Under the conditions of a high-temperature heat source, in the reheat extraction steam Rankine cycle, the theoretical cycle efficiency can reach 34.32% when the temperature of the turbine inlet is 380°C, the pressure is 8 MPa, and the condensation temperature is 41.5°C. The studies can provide a fundamental basis for the design of solar thermal power generation systems with different heat source conditions.

Design and implementation process of a pico-hydro power generation system for teaching and training

In Mexico the development of remote laboratories is incipient, in 2020 the National Council of Humanities, Sciences, and Technologies (CONAHCYT) created a network of virtual laboratories with nine of its public research centers in order to create a virtual space that enables the development of experimental and research activities in a distance modality. However, access to virtual laboratories is limited only to its members, and the platforms are still under development. With this motivation, this article presents a multi-institutional project for the design, development, and implementation of a pico-hydraulic system for small-scale power generation for teaching and training purposes with the aim of responding to the current need for distance or virtual teaching of practical knowledge due to the coronavirus disease (COVID‑19) caused by the SARS-CoV-2 virus. For the development of the system, technological innovation tools (QFD, TRIZ) were used, with which the design requirements were obtained considering the users (students and teachers) and the renewable energy-related competence of the curricula. Finally, the satisfaction of the users (students and teachers) with the use of the designed system shows the advantage of including it as part of the practical activities of the subjects to improve the development of power generation, transformation, and transmission system projects.

System design and thermo-economic analysis of a new coal power generation system based on supercritical water gasification with full CO2 capture

To achieve sustainable energy supply and carbon neutral, it is essential to enhance the efficiency and reduce carbon emissions for coal power. In this study, a coal power generation system based on supercritical water gasification (SCWG) with full CO2 capture is proposed. The system achieves autothermal gasification by partial oxidation of coal in the SCWG gasifier. Gasification water is preheated by turbine exhaust, and organic Rankine cycle (ORC) is integrated to recover the waste heat of turbine exhaust. Simulation and thermodynamic analysis models of the system are developed. Results show the energy efficiency and exergy efficiency of system with benchmark parameters reach 52.95 % and 54.11 %, respectively. The largest exergy destruction occurs in gasifier and accounts for 41.36 % of the total exergy loss. Irreversibility of heat transfer mainly occurs in water heat exchanger and ORC, accounting for 4.81 % and 5.59 % of the total loss. Effects of key operating parameters on the system performance are investigated. Results show the optimal turbine exhaust pressure is 0.1 MPa, and higher turbine inlet temperature can enhance the system efficiency. System with reheat configuration shows potential in thermodynamic and economic aspects, and the exergy efficiency of double reheat system is improved from 37.25 % to 45.08 %.

Design and Power Generation Characteristics Analysis of a Self-adaptive Thermoelectric Power Generation System Based on LTspice

Design and Power Generation Characteristics Analysis of a Self-adaptive Thermoelectric Power Generation System Based on LTspice

Capacity Optimization Design of Hybrid Energy Power Generation System

Capacity Optimization Design of Hybrid Energy Power Generation System

From blackouts to breakthroughs: Examining electricity's relevance in healthcare during COVID-19 and the future role of renewable energy

Power supply played a critical role during the COVID-19 pandemic in keeping hospitals and critical medical equipment operating, which was quickly reflected in electricity consumption and new consumption patterns. However, not all countries faced the same challenges. While developed countries could react adequately to changes in hospital electricity consumption patterns, low-income countries faced infrastructure and energy access challenges during the pandemic, which hampered the management of the pandemic in all of its dimensions. This paper reviews the importance of power supply in hospitals through a literature review and divides the discussion into three sections. First, the factors influencing new hospital consumption patterns during the pandemic are discussed. Then, the consequences of the lack of electricity in remote areas on managing the pandemic are reviewed. Finally, the impact of the pandemic on the design of hybrid power generation systems is reviewed, which must not only provide autonomy for similar future scenarios but also be prepared to respond to sudden increases in power consumption due to a greater number of patients or longer working hours, an increase in the number of critical loads, and possible restrictions on access to fuel. Thus, this work provides valuable insights for policymakers, academics, and researchers on the importance of updating hospital power supply standards and contributes to demonstrating the need to electrify remote hospitals.

Investigation of lightning attachment characteristics of wind turbine blades with different receptors

Wind power generation system is one of the most important components of new energy power system. However, lightning disasters seriously threaten the safe and stable operation of wind turbine blades. In order to protect wind turbine blades from lightning, different types of lightning receptors are developed. In this paper, lightning discharge experiments of wind turbine blades are carried out to study the lightning protection effects of tip, side, and metal mesh receptors. The lightning discharge processes of wind turbine blades with different receptors are observed and the lightning protection failure rates are recorded. Electric field simulations have been done to analyze the lightning discharge mechanism and discuss the lightning protection optimization methods of wind turbine blades, which can give references for the lightning protection design of wind power generation system.

Design of solar power plant and real-time voltage quality monitoring system using LabVIEW

This research presents the design of a solar power generation system in combination with energy storage unit. The objective of this research is to apply renewable energy production technology to reduce the use of external energy. this research was to design a solar power generation system for beef cattle breeding group, Na Yom sub-district, Mueang district, Phetchabun province. The solar power generation system is designed to be installed on the roof. In addition, this research study and development of innovative prototypes for real-time solar voltage quality monitoring system using the LabVIEW program. The study results showed that this solar power generation system in combination with the energy storage unit can supply the load covering the energy consumption of the beef cowshed, which can reduce the use of external electricity by 23.10% and the solar voltage quality monitoring system can display the results for the monitoring of the solar power generation system in conjunction with the real-time voltage quality. In addition to the objectives of this solar power generation system can be developed to further the innovation of renewable energy generation. If a group of farmers has built a widespread power generation system, including electricity generation from other types of renewable energy, it can be developed into a micro grid system for energy security

Design and Fabrication of Power Generation System by using Gym Equipment

The intention of this project is to design a renewable energy source based around a piece of exercise equipment. The energy expended in a typical workout at the gym is usually wasted in the mechanics of the equipment. This project harnessed the mechanical energy of the machine and converted it to electrical energy using a generator-based system. The exercise equipment, attached to the shaft of the generator. Thus produced electrical energy is used in powering a piece of equipment such as lamp or a computer while exercising. This report will introduce the project and present all applicable information regarding the design, development, and the final product. This project will help one develop engineering skills while learning about a clean way of generating electricity. The modern challenge faced with the global energy situation is the growing energy demand and the strong dependence on unsustainable fossil fuels. Another concurrent issue is the adverse health and socio-economic implications of adult obesity. This Gym Power Generation Machine project, which uses metabolized human energy to generate electrical power, could potentially address both these challenges.

Design and operational optimization of a methanol-integrated wind-solar power generation system

Wind and solar energy are rapidly being merged into electricity grids in China. High penetration of variable renewable electricity drives the development of energy storage with low cost, high flexibility and utility-scale. To this end, a methanol-based energy storage system is proposed to meet regional power demand by combining a hybrid wind-solar source. This work studies capacity configuration and logistics scheduling at the hourly level with the minimum power generation cost. The round-trip efficiency reaches 41.5%, and the levelized cost of electricity is 0.148 $/kWh. The wind-solar hybrid system improves the system efficiency and economy compared with separated wind or solar systems. Taking methanol as the hydrogen carrier significantly reduces the storage scale of hydrogen. In terms of regions with larger fluctuation of renewable energy, methanol-based energy storage is more cost-effective than hydrogen energy storage.

Scheme design of brushless DC excess power generation system

Brushless motors have the advantages of no brush, low interference, long life, and low maintenance costs, which are increasingly used in aviation power systems. According to the reliability requirements of the aircraft power generation system, this paper proposes a brushless DC excess power generation system scheme, which sends the alternating current generated by the main motor of the brushless DC generator to the AC/DC converter and primary power distribution, while retaining the main motor power generation converted into DC power through the internal rectifier circuit of the motor. The generator controller is designed with double surplus output to improve the reliability of the system power supply.

Design and Fabrication of Exhaust Gas Heat Recovery Power Generation System

Abstract: This paper proposes and implements a waste heat energy recovery system for internal combustion engine automobiles, including gasoline vehicles. In modern days agricultural sector is plays an important role, so for that we need electrical energy for lighting effects in night times. The key is to directly convert the heat energy from automotive waste heat to electrical energy using a turbocharger, which is then regulated by a DC–DC Ćuk converter to charge a battery using maximum power point tracking. Hence, the electrical power stored in the battery can be maximized. The experimental results demonstrate that the proposed system can work well under different working conditions, and is promising for automotive industry.

초대형 선박 폐열 열전발전시스템 내부 열전달 현상 규명

As environmental regulations on exhaust gas are being enforced around the world, and marine transportation is gradually being strengthened. It is believed that various methods will be attempted to the emission regulations. The thermoelectric power generation system can convert thermal energy into electrical energy. It can be applied without limiting the functions of the equipment and parts in the existing ship and has the advantage of not incurring large maintenance costs, which have spread to ship applications. In order to optimize the design of the thermoelectric power generation system, the heat transfer phenomenon due to the internal position was analyzed through CFD, and cross-validation was carried out through comparison with actual experimental values. Before conducting CFD of the thermoelectric power generation system, By setting the porous domain for the fin was applied to TEM to derive accurate results while reducing the calculation load. Comparing the fin that was applied to TEM and porous domain CFD results confirmed that the fin and porous domain CFD results have a great agreement with a maximum error of less than 0.5%. After that, performed a CFD of the entire thermoelectric power generation system, analyzed the heat transfer phenomena in a thermoelectric generator, and based on the results, conducted a comparison verification with the experimental results. The result of the comparison indicates the maximum error in the cooling jacket and power generation. This is analyzed in the experimental and CFD adiabatic efficiency difference, the heat loss difference at different locations in the actual experiment. In this study establishes an analysis methodology through comparative verification of experiments and CFD, It is expected that can optimize the design of thermoelectric power generation systems through the established methodology.

Environmental analysis and optimization of fuel cells integrated with organic rankine cycle using zeotropic mixture

The use of fuel cell (FC) is considered one of the methods of producing electricity with relatively high efficiency. So, it has attracted many researchers' attention to develop and improve its performance. The present study deals with the technical-economic optimal design of a hybrid power generation system based on a Proton Exchange Membrane (PEM) FC combined with an Organic Rankine Cycle (ORC). ORC is used to recover the generated heat in PEM FC. The decision variables of this study include FC operating pressure and temperature, current density, FC area, the quantity of FC, and operating parameters of the ORC system, including HRVG PPTD, condenser PPTD, and refrigerant mass fraction in zeotropic mixture. In this study, three zeotropic mixtures, including R11-R245fa, R11-R123, and R123-R245fa, are studied as the working fluid of the ORC system. The objective functions considered to be optimized are the system's exergy efficiency and total cost rate (TCR). Finally, it is observed that the highest exergy efficiency is obtained using the zeotropic mixture R11-R245fa with a value of 54.15%, and the lowest TCR is obtained with the mixture R11-R123 with a value of 0.65 $/s. Zeotropic mixture R11-R123 has the exergoenvironmental index, environmental damage effectiveness index, and exergy stability factor of 0.5506, 1.277, and 0.4750, respectively.

Sizing of a Hybrid Energy System for Al Mazyouna Area

Natural gas and diesel currently are the main fuel for electrical power generation in Oman. Decreasing the dependence on national gas and diesel is one of the main goals for Oman’s vision of 2040. This paper discusses the optimum design of a hybrid stand-alone power generation system for the power station of Al-Mazyouna located west of Dhofar governorate using HOMER Pro Software. Real load data and solar radiation of Al-Mazyouna were utilized in the modelling approach. Different scenarios of power systems were investigated, using mainly, diesel generators, PV solar panels, and storage batteries to reach an optimal solution. The main factors that were considered to decide the wining setup of a power system are the net present cost, cost of energy and the amount of emissions. The optimum scenario resulted in a net present cost of $84.8 M and a cost of energy of $0.161/kWh compared to a net present cost of $99.4M and a cost of energy of $0.188/kWh for the current system. Additionally, the optimum scenario system limits toxic emissions significantly compared to the base system. The results of the winning scenario showed that the emitted quantities of harmful gases are all reduced by about 28% compared to the base system.