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2025 Vol. 12, No. 1
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2025, 12(1)
Abstract:
2025, 12(1): 1-11.
doi: 10.16516/j.ceec.2024-306
Abstract:
Objective This paper aims to explore dynamic modeling methods for airborne wind energy systems (AWEs) and trajectory tracking control methods for stable trajectories of kite trains and between kite trains when subjected to longitudinal disturbances in high-altitude wind fields. Method Taking a 25 MW-level kite-based AWEs as an example, this study investigated the mechanical response characteristics of kite arrays and constructed a multi-rigid body dynamic model of the kite-based system. In a simulated environment replicating high-altitude wind fields subjected to longitudinal disturbances, the study employed kite attitude control to design synchronous control laws, enabling trajectory tracking and ensuring operational safety of the kite-based system. Result The results demonstrate that adjusting the effective windward area of the kite can mitigate longitudinal disturbances caused by variations in high-altitude wind fields, leading to the convergence of errors between the actual and desired trajectories of the kite-based system. Moreover, based on the synchronous control laws designed, synchronization among multiple kite- based systems has been achieved, thereby ensuring collision-free and safe operation. Conclusion Using kite attitude control as a basis, a synchronous control strategy can be designed for the operation of kite-based AWEs, thereby achieving the objective of safe and efficient operation control in dynamic high-altitude wind environments.
2025, 12(1): 12-21.
doi: 10.16516/j.ceec.2024-257
Abstract:
Objective Friction winch is the main working equipment for Airborne Wind Energy Systems (AWES). To overcome the difficulties of high cable tension, high linear velocity and complex working conditions during its operation to meet the requirements of long service life, high reliability and high safety, a floating double drum friction winch mechanism based on pressure bearing wheels is proposed. Method The key components of the pressure bearing wheel and drum were optimized using finite element analysis software. A force analysis model for the friction winch was established and subjected to mechanical analysis. The variable density method was used to optimize the topology of the internal support structure of the pressure bearing wheel. Parameterized modeling of the drum was conducted, followed by sensitivity analysis to screen out structural parameters with significant sensitivity to maximum stress, mean stress and geometric mass. Using the central composite experimental design method, a response surface model was established for the drum's stress, mass and main design structural parameters. Result By taking the minimum strain energy as the objective and the internal support volume of the pressure bearing wheel as the constraint, the optimization achieves a 36% reduction in the structural mass of the pressure bearing wheel, and its strength is verified to meet the requirements by applying loads at different locations. Sensitivity analysis is used to screen the structural parameters of the drum, and a response surface model of the drum is established for multi-objective optimization. This results in a drum optimization design that achieves a 16.6% reduction in mass while meeting strength requirements. Conclusion Based on finite element analysis simulation software, the key components of the friction winch are optimized and the feasibility of the above configuration was verified. This not only reduces manufacturing costs and improves economic efficiency but also addresses challenges such as bearing selection, vibration and thermal expansion in high-speed, heavy-duty winches.
2025, 12(1): 22-30.
doi: 10.16516/j.ceec.2024-370
Abstract:
Objective At present, domestic and international research on high-altitude wind power generation technology has been carried out, mainly in the fields of operation control, mechanism analysis and system design, but no research results have been found in the field of high-altitude wind power station operation and maintenance. Method This paper proposed a design scheme of intelligent operation and maintenance assistance system for high-altitude wind power stations, which provided ideas for the future popularization and application of intelligent operation and maintenance technology in high-altitude wind power stations and the promotion of digital operation and maintenance construction. Based on the investigation of China's first demonstrative high-altitude wind power station with an umbrella-ladder combination system, the pain points of operation and maintenance at the present stage were analyzed, and a set of intelligent operation and maintenance assistance system was designed to solve the problems such as scattered monitoring and background in the station, various operating data forms, unsystematic equipment records and inconvenient tracing of fault maintenance history. Result Based on microservices, an intelligent operation and maintenance visualization platform for high-altitude wind power station is developed to realize centralized monitoring of power generation system equipment status, standardization of equipment records and maintenance ticket process, monitoring of operating environment safety, active identification of dangerous events and output alarm. Conclusion High-altitude wind power station is an emerging concept in energy sector. The design of its intelligent operation and maintenance platform should first focus on improving the centralized visualization degree of power station operation data, promoting the digital management mode of equipment and ensuring the safety of power station operation environment, so as to match the operation and maintenance requirements of power station in the initial stage. With the advance in the core control technology, equipment selection and manufacturing technology of high-altitude wind power generation system in the future, the intelligent operation and maintenance technology of high-altitude wind power station can be adapted to the progress, and further promote the rise of high-altitude wind power station.
2025, 12(1): 31-42.
doi: 10.16516/j.ceec.2024-423
Abstract:
Objective New energy power generation is expected to continue its development characterized by large scale, high proportion, marketization and high quality in the future. Advancing the energy revolution and accelerating the development of new energy systems are significantly influenced by meteorological issues. Method This study analyzed the relationship between key aspects of new energy systems and weather and climate. It highlighted the important role of meteorological work for new energy systems in three fields: support, integration and guarantee. The study presented the development history of wind and solar energy resource assessment technologies in China, covering resource assessment technology, assessment methods for technically available resources and key technical issues for the latest round of wind and solar energy resource censuses. Additionally, it examined the forecast demand and forecast period divisions for wind and solar energy, introduced the technical progress and main products of the China meteorological administration in ultra-short, short, medium, and long-term forecasts, and discussed the implementation of the precise meteorological service demonstration plan for wind and solar power generation (SDP). Result Wind and solar energy resource assessment technologies have seen significant improvements; however, they also face challenges posed by large-scale wind turbine generation systems and the diversified utilization of solar energy. Consequently, there is a pressing need to continuously develop new resource assessment technologies to meet the demands of the energy industry. Additionally, enhancing the accuracy of wind and solar energy forecasts requires breakthroughs in methodology. Developing meteorological forecast correction and power prediction models for wind and solar power generation stations, based on the principle of applying a tailored policy to each station, will be a crucial strategy for enhancing forecast accuracy. Conclusion Meteorological work should be guided by the Guidelines for High-Quality Meteorology Development (2022-2035) issued by the State Council. It is essential to continually strengthen scientific and technological innovation, as well as social service capabilities, in order to make positive contributions to the high-quality development of new energy systems.
2025, 12(1): 43-57.
doi: 10.16516/j.ceec.2024-367
Abstract:
Objective In recent years, climate warming and other factors have led to a rise in extreme weather events globally. Simultaneously, under the "carbon peak - carbon neutral" goal, the integration of fluctuating renewable energy including wind and solar energy, extensive use of power electronics and long-distance ultra-high-voltage transmission have reshaped traditional power grids. These changes have increased the exposure of primary equipment to harsh environments, intensifying the vulnerability of power systems to extreme weather impacts. Method This paper reviewed the impact of recent extreme weather events, such as typhoons, heavy rainfall and ice storms, on power system equipment and operations. It explored systemic risk performance in depth in new power systems through case studies and proposed strategies for refined modeling, systemic risk assessment and cross-disciplinary collaboration across disaster scenarios. Result The research shows that extreme weather significantly increases the risks of equipment failures and system instability, with high renewable energy penetration amplifying the impact of failure propagation. Conclusion The safe operation of power systems under the dual pressure of in-depth construction of new power systems and intensified impact of extreme weather relies on improvement of equipment risk modeling, systemic risk control and cross- disciplinary collaboration mechanisms. Therefore, future research should focus on building multi-dimensional joint risk assessment of power systems. In addition, the paper points out the significance of strengthening in-depth integration of power systems and meteorological systems for enhancing risk prediction and dynamic response capabilities of the system, thus providing scientific basis and technical support for improving the system resilience.
Thinking on the Meteorological Services to Ensure the Development of a System for New Energy Sources
2025, 12(1): 58-64.
doi: 10.16516/j.ceec.2024-234
Abstract:
Objective Clean and low-carbon production is the core target of a system for new energy sources, and which construction is an important measure to realize the carbon peaking and carbon neutrality goals. Meteorological factors and disasters have great impacts on the stable and safe operation of the power grid. It is necessary to build a high-quality meteorological service system according to the needs of the construction of a system for new energy sources. Method In this paper, literature and policy research and expert consultation methods were adopted. Based on the analysis of the relevant policie measures of a system for new energy sources, the future development direction of the energy meteorological service was studied, and the development proposals of the meteorological service system for the construction of a system for new energy sources were put forward. Result The research shows that service departments at various levels of China Meteorological Administration have deliverd energy meteorological services in wind power, solar power, hydropower, nuclear power, power grid operation, energy consumption etc. The construction of a system for new energy sources puts forward new requirements for meteorological service, such as optimizing the overall layout of meteorological service support for the construction of clean energy bases, strengthening the accuracy of power generation forecast and climate prediction services, and carrying out meteorological service support for various scenarios such as the construction of new energy infrastructure, power generation, storage, transmission and consumption. Conclusion According to the requirements of a system for new energy sources construction, proposals are put forward from aspects such as optimizing the layout of meteorological services, improving service support capabilities, strengthening talent and cooperation mechanisms.
2025, 12(1): 65-74.
doi: 10.16516/j.ceec.2024-126
Abstract:
Objective Offshore wind power safety is of paramount importance. Meteorological services effectively address forecasting and warning challenges related to high waves, storm surges, severe convection and sea fog that impact wind farm safety, ensuring the secure and efficient operation of offshore wind energy projects. Method This paper took the meteorological services for offshore wind farms in Jiangsu as an example. By utilizing the data assimilation techniques and state-of-the-art artificial intelligence methods, combined with numerical models, it developed key technologies such as wind-wave-current forecasting for offshore wind farms, intelligent forecasting of significant wave height and storm surges, as well as high-impact weather monitoring and forecasting alerts. Ultimately, this led to the refinement of meteorological services and applications for offshore wind farms. The reflections on the empowerment of meteorology in the offshore wind power industry and the enhancement of technological integration across different sectors were presented. Result The results indicate that the spatial and temporal resolution of forecasting elements such as 10 m wind, 100 m wind, and wave height in offshore wind farms has been improved to 1 hour and 3 kilometers. The lead time for forecasting significant wave height and storm surge water level has increased to 72 hours, with an 85% accuracy rate for 6-hour forecasts. The lead time for severe convective warnings has been advanced by 1 hour, and sea fog warnings by half an hour, with a forecast accuracy rate of 92%. The technology has enabled refined meteorological services and applications for multiple working scenarios. Conclusion The application of key technologies in offshore wind farm meteorological services has effectively enhanced the safety production and O & M capabilities of offshore wind power, optimized the power generation efficiency of offshore wind turbine units, reduced the costs and losses of offshore operations, ensured the safety of offshore operations, and minimized losses of life and property. As offshore wind farms continue to evolve, meteorology will increasingly integrate with various disciplines, empowering the development of the entire offshore wind power industry chain.
2025, 12(1): 75-82.
doi: 10.16516/j.ceec.2023-277
Abstract:
Objective This paper aims to explore a novel floating offshore photovoltaic system that not only effectively collects marine solar energy but also performs intelligent climate early warning. Method By integrating offshore photovoltaic technology with intelligent meteorological monitoring technology, we developed a viable intelligent offshore photovoltaic climate early warning platform. Firstly, the floating offshore photovoltaic platform was used to convert solar energy into electrical energy. Secondly, the intelligent monitoring system monitored ocean weather conditions in real-time and gave early warnings to improve the reliability of photovoltaic power generation. Result Tests show that the floating offshore photovoltaic system can effectively collect solar energy under different sea areas and weather conditions, and the intelligent meteorological monitoring system is used to timely give early warnings on the changes in marine meteorology. Conclusion This study finds that the platform has broad application prospects and market potential. It can provide references for the development of marine renewable energy and provide ideas and methods for related research and practice.
2025, 12(1): 83-90.
doi: 10.16516/j.ceec.2023-296
Abstract:
Objective The wind turbine generator (WTG) yaw braking system has application in low-pressure yaw and high-pressure heavy load, and the friction performance between friction pairs is influenced by various parameters between the components of the yaw braking system. Method Based on the friction test bench of disc brakes, this paper simulated the operation of the brakes under different working conditions of the WTG, studied the friction characteristics of organic composite materials under different pressures, velocities and temperatures for dual components of same and different materials, and revealed the influencing factors of different parameters on friction coefficient from the perspective of tribology. Result The results show that under the same surface parameters, different dual component materials have a significant impact on the friction coefficient; The friction coefficient decreases with the increase of braking pressure and relative velocity of the friction pair and the braking pressure has a greater impact factor on the friction coefficient; The friction coefficient is greatly affected by temperature, and the higher the temperature between the friction pairs, the smaller the friction coefficient. Conclusion The research results have important theoretical significance and practical value for the parameter selection and braking control logic of the wind turbine generator yaw braking system.
2025, 12(1): 91-99.
doi: 10.16516/j.ceec.2023-268
Abstract:
Objective In order to better understand the fault characteristics of offshore wind power access system, the impact analysis of AC fault characteristics of offshore wind power access system is carried out. Method The topology analysis of grid-connected transmission system of offshore wind power and the work control principle analysis of offshore wind power electrical structure were presented, including the work control principle analysis of PMSG, the topology and principle analysis of flexible and direct transmission system, the work control principle analysis of offshore converter station, the work control principle analysis of onshore converter station, and the work control principle analysis of offshore converter station. The fault characteristics and mechanism of offshore wind power access system were analyzed from two aspects: asymmetric fault and symmetric fault. Result The simulation model of PSCAD-based offshore wind power transmission through flexible direct transmission is established and verified. The correctness and universal applicability of the proposed mechanism analysis are verified through the simulation analysis of single-phase grounding fault and three-phase grounding fault. Conclusion The simulation results verify the correctness of the fault characteristic mechanism analysis. The symmetric component method can be satisfied with the fault analysis in the system with power electronic equipment access. In the case of asymmetric fault, the in-phase short-circuit current on both sides has a certain phase Angle difference, the negative sequence current on the soft straight side is the largest, and the short-circuit current on the wind side is generally small. There is only positive sequence current in the soft direct side and wind field side, and the phase of in-phase short-circuit current on both sides is almost the same, showing amplitude limitation.
2025, 12(1): 100-108.
doi: 10.16516/j.ceec.2023-230
Abstract:
Objective The traditional research object of offshore wind power transmission is the point-to-point onshore transmission of electricity from a single wind farm, which has limitations, and the economic evaluation method used only considers initial investment, which is not systematic and scientific enough. In response to the current application scenarios of offshore wind power integrated development, this article proposes a method for optimizing the centralized transmission mode of multiple wind farms, guiding the determination of the optimal transmission scheme. Method Technically, according to the working principle, offshore wind power transmission includes three types: AC, DC, and AC DC hybrid, each with its own characteristics and scope of application. In terms of economy, in addition to initial investment, consideration should also be given to the losses, maintenance, shutdown losses, and costs incurred during the operation of the equipment over its service life, as well as the costs incurred during sea area leasing. Symmetric monopole systems and symmetrical bipolar systems should adopt different calculation methods based on system characteristics. Result This article provides six centralized transmission solutions for typical cases, covering all mainstream technical solutions for current AC and DC transmission. Select the optimal delivery plan by comparing the technical and economic aspects of different plans. Conclusion China's offshore wind power is currently moving from small-scale demonstration applications to large-scale integrated development. The optimal method for centralized transmission of offshore wind power from multiple wind farms proposed in this article is deeply in line with the market demand for large-scale centralized transmission of offshore wind power in the future, and has high guiding value.
2025, 12(1): 109-115.
doi: 10.16516/j.ceec.2024-049
Abstract:
Objective With the promotion of carbon peak and carbon neutrality strategy, offshore wind power has ushered in a period of rapid growth. In 2023, more than 87 offshore wind power project sites in various provinces and cities across the country have identified investment entities or are carrying out project competition, with an installed capacity of more than 58.9 GW. In the future, the deep-sea foundation type will be mainly based on the four-pile jacket foundation, In the process of steel pipe pile penetrating, the surrounding soil will be disturbed, resulting in silt deposit. If the dredging outcome is not ideal, it will affect the strength of the infrastructure, on the other hand, it will affect the safety of fan hoisting. Method The article took a demonstrative wind farm in the East Guangdong Sea as an example. Firstly, this paper analyzed the causes and hazards of silt deposit in view of the characteristics of the wind farm, such as high water depth, poor visibility, high viscosity and large amount of silt removal. Secondly, combined with the successful application of the demonstrative project, the feasibility of the dredging process was verified. Finally, the dredging process could be further improved from three aspects: process optimization, equipment optimization and design optimization. Result Research has shown that the dredging method is optimized by ultra-high pressure hydraulic dredging and air disturbance dredging, the dredging equipment is optimized by robot technology, the elevation of pile top mud surface is adjusted and the rising space of silt is reserved for design optimization. The improved dredging process adapts to the complex conditions in deep sea, and further effectively improves the efficiency of underwater dredging. Conclusion The improved dredging process can be popularized and applied to subsequent deep-sea wind power projects.
2025, 12(1): 116-126.
doi: 10.16516/j.ceec.2024-088
Abstract:
Objective The offshore step-up substation serves as the central hub for power collection in offshore wind farms, and its inspection, operation and maintenance are crucial to ensuring safe production and improving efficiency. As offshore wind farms continue to expand into deeper and farther waters, the safety risks, operation and maintenance costs, inspection efficiency and other problems brought by the manual inspection mode become even more prominent, leading to the increasing demand for intelligent inspection of offshore wind farms. To effectively address the challenges of frequent inspections, high difficulty and low efficiency in offshore wind power step-up substation, an intelligent robot inspection system is designed in this paper. Method Firstly, a three-layer system architecture of the intelligent inspection system was designed, comprising perception-layer, network-layer and application-layer. Subsequently, detailed information about the robot inspection system was provided, including background management system, robot system design, communication power supply system design, and instrument image recognition technology. Finally, the application steps of the robot were designed from the transformation of the step-up substation, the installation mode of the robot and the inspection task planning. Result The developed robot inspection system is successfully applied to both new and old offshore step-up substations. It realizes remote inspections of equipment status at offshore step-up substations and facilitates intelligent analysis of inspection data. Conclusion The advantages of the proposed robot intelligent inspection system include high efficiency in inspections, reduces management costs and enhanced emergency response capabilities. These improvements significantly enhance operation and maintenance efficiency while reducing costs associated with offshore wind power generation. The research findings have important implications for advancing intelligence in offshore wind power operation and maintenance.
2025, 12(1): 127-140.
doi: 10.16516/j.ceec.2024-147
Abstract:
Objective Under the background of carbon neutrality, the development of new energy has attracted more attention from countries and regions, and offshore wind farms, based on abundant wind resources, have been vigorously developed by governments. Method The literature related to the offshore wind farms site selection was searched in the Web of Science core database, and the search results were analyzed based on CiteSpace software. Result The results show that the United States, China and England paid more attention to the research on offshore wind farms, and the number of publications had increased rapidly in recent years. During the period 1997-2010, the assessment of offshore wind energy, wave energy and other resources had been studied as the basis for the macro site selection of offshore wind farms. From 2011 to 2020, the micro-layout of offshore wind farms had been paid more attention. Since 2021, more studies begun to emphasize the sustainable development of offshore wind farms. Conclusion Overall, the location selection of offshore wind farms is influenced by the distribution of wind resources, the change of seafloor structure, the occurrence of marine geohazards, as well as the issuance of policy. With the maturity of shallow sea wind farm technology, the deep-sea offshore wind farm will be gradually developed in the future, which will further promote the development of floating offshore wind power. In addition, the cooperation development of offshore wind farms with oil and gas development, marine aquaculture and other projects will receive more research and attention.
2025, 12(1): 141-146.
doi: 10.16516/j.ceec.2024-150
Abstract:
Objective In recent years, the wind turbine diameter of wind turbine has become larger and larger, which makes the wind load borne by the tower barrel more and more. In order to match the wind turbine, it is necessary to increase the diameter of the tower to meet its bearing capacity. With the increase of the diameter of the tower barrel, the diameter of the platform inside the tower barrel will also increase, and the weight will increase correspondingly, resulting in an increase in cost. At the same time, the diameter of the platform in the tower barrel increases, if the traditional platform beam is used, the welding part of the platform beam with the barrel is easy to cause a large stress concentration, and the structural failure is easy to occur, resulting in heavy losses. Method In order to avoid the problems of cost increase and easy failure of the welding part between the platform beam and the cylinder, caused by the increase of the platform diameter, the whole large inner platform of the tower cylinder was divided into 6 independent small platforms, and 2～3 supports were designed at the lower part of the platform, with one end of the support welded with the cylinder and one end free. The deformation and strength of the platform under two load conditions (SLS and ULS) were evaluated by the finite element analysis software. Result It is found that the platform is safe under the corresponding load conditions and is widely used in the field. Conclusion The design of sharding platform can not only meet the requirements of field use intensity, but also reduce weight and cost, and produce certain economic benefits, which has further promotion value.
2025, 12(1): 147-159.
doi: 10.16516/j.ceec.2024-362
Abstract:
Objective Large-diameter monopile foundations are widely used in marine engineering in China and are typically installed through penetration. Due to the impact of the pile hammer, the pile body experiences continuous impact loads during the driving process, making it susceptible to fatigue issues. Therefore, it is particularly important to study the penetration process and fatigue damage of large-diameter monopile. Method This paper focused on the large-diameter monopile foundations. Based on the engineering field test data, a segmented pre-setting modeling method was proposed to address the issue of excessive computational workload in continuous pile penetration, allowing for segmented calculations of the monopile driving process. The feasibility of this method in calculating the mechanical response of the pile body during driving was verified. Time-history responses of displacement, velocity and stress at target points on the monopile under a single driving action were obtained. Fatigue damage at the welded position of the monopile varying cross-sections was calculated using the S-N curve and Palmgren-Miner theory. Result The results show that the proposed segmented pre-setting modeling method effectively reflects the mechanical response of the pile body under driving action. The trends of displacement, velocity and stress are in good agreement with the measured data. The error between the simulated maximum stress value and the measured value is within 10%. Conclusion The damage to the target cross-section of the monopile caused by a single driving action is directly related to the effective driving energy received. After 1017 hammer strikes, the fatigue damage at the welding position of the monopile varying cross-sections is 7.578%, accounting for 22.734% of the fatigue life under the designed safety premise. Therefore, attention should be paid to the fatigue damage of the pile body caused by the driving during the penetration process.
2025, 12(1): 160-167.
doi: 10.16516/j.ceec.2024-127
Abstract:
Objective Current loop is an important control link in the grid-connection process of doubly fed induction generator (DFIG). Aiming at the poor dynamic performance of doubly fed wind power generation system during parameter uptake in traditional PI control and the buffeting problem in traditional reaching law sliding mode control, the sliding mode variable structure is studied and designed. Method The research method of vector control of DFIG based on sliding mode variable structure mainly focused on utilizing the advantages of sliding mode variable structure control, such as fast response speed, insensitivity to parameter changes and perturbations, etc., and combining with the characteristics of DFIG to realize accurate vector control. First, the sliding mode surface was designed to ensure that the system state slides on the sliding mode surface, and then the sliding mode controller was designed to stabilize the system state and adjustments were made to enable the system to track the desired trajectory through feedback, to achieve efficient and stable control of DFIG. Additionally, the anti-buffeting factor was combined with the power function to design the reaching law function, proposing a kind of improved power function to improve the controller's performance. A sliding mode controller based on improved power function was then constructed. Result Simulations show that the control process of the sliding mode controller based on an improved power function is almost free of overshooting under sudden wind speed changes. Conclusion Compared with the traditional PI regulator, the sliding mode controller based on an improved power function has excellent dynamic performance and control accuracy, effectively improving the control effect, stability, and anti-interference ability in the doubly fed wind power generation system.
2025, 12(1): 168-176.
doi: 10.16516/j.ceec.2024-293
Abstract:
Objective At present, wind power generation has been widely used, but wind power is volatile and unstable, and the grid voltage fluctuation and network loss increase will be caused after wind farms are connected to the grid. To solve these problems, a multi-objective reactive power optimization model of distribution network considering the reactive power output of doubly fed induction generator is proposed. Method Based on the segmentation idea, the uncertain dynamic problem of wind power was transformed into a definite static problem, and the improved whale optimization algorithm was used to solve the mathematical model. In order to solve the problems of low precision, slow convergence speed and easy to fall into local optimality of the traditional whale optimization algorithm, a hybrid strategy was adopted to improve whale optimization algorithm, and some improved methods such as tent mapping initialization, adaptive weight and adaptive probability threshold were introduced. Result Taking the improved IEEE33 node distribution network as an example, the improved whale optimization algorithm can improve the global search ability and convergence speed comparing the particle swarm optimization and gray wolf optimizer. Conclusion The optimal reactive power output of wind farm optimized by the proposed strategy can reduce more system losses and improve the voltage stability of distribution network.
2025, 12(1): 177-188.
doi: 10.16516/j.ceec.2024-267
Abstract:
Objective In the context of global energy structure transformation and climate change response, wind energy, as one of the clean and renewable energy sources, the optimization of its utilization efficiency has become the focus of current research in the energy field. In order to reduce the influence of the wake effect between wind turbines on the output power of wind farms and improve the efficiency of wind farms, it is necessary to carry out a reasonable layout of wind turbines. Method Using Fast Farm simulation technology, the effects of changing the wind turbine spacing on the power and its improvement rate of three NREL 5 MW turbines in a turbulent wind farm under tandem and staggered arrangements were studied. Result When the spacing between turbines increases, the output power of the rear turbines can be significantly improved, but the degree of improvement is different, in which when the longitudinal spacing of the turbines is increased from 5D to 6D and from 10D to 11D, the power generation of the wind farm can be greatly improved. A reasonable range of values for the lateral spacing between wind turbines is derived, which allows for an optimal layout of the wind farm. Conclusion In this paper, the spacing between wind turbines is divided in more detail, and through the analysis of the degree of impact on the power of wind farms under different conditions, it can be seen that there are differences in the optimization of the layout of the wind turbine under the conditions of series and staggered rows, which provides a certain reference for the optimization of the layout of wind farms.
