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2021 International Conference on Smart City and Green Energy (ICSCGE)最新文献

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Thermal Resistance and Numerical Simulation Analysis of Blast Furnace Stave 高炉壁热阻及数值模拟分析
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654388
Xun Xu, Zhao-kuo Yuan
The thermal resistance model of blast furnace cooling stave is established by combining the entransy dissipation heat resistance with the convective thermal resistance of each heat exchange surface, and the influence of structural parameters of cooling stave on thermal resistance is discussed. The results show that in the heat transfer process of blast furnace cooling stave, the factors that determine its heat transfer performance include the entransy dissipation heat resistance of the stave body and the convective heat resistance of each heat exchange surface. The entransy dissipation heat resistance reflects the thermal conductivity of the cooling stave. The smaller it is, the better the thermal conductivity is. The convective thermal resistance reflects the convective heat transfer capacity of hot surface, cold surface and inner surface of water pipe. The smaller it is, the stronger the surface heat transfer capacity is. It is the theoretical basis for improving the performance of the cooling stave by changing the structural parameters of the cooling stave, reducing the entransy dissipation heat resistance of the cooling stave or the convective heat resistance on the inner surface of the cooling water pipe.
结合各换热面能量耗散热阻和对流热阻,建立了高炉冷却壁的热阻模型,并讨论了冷却壁结构参数对热阻的影响。结果表明,在高炉冷却壁的换热过程中,决定其换热性能的因素包括壁体的能量耗散热阻和各换热面对流热阻。耗散热阻反映了冷却壁的导热性。它越小,导热性越好。对流热阻反映了水管热表面、冷表面和内表面的对流换热能力。它越小,表面换热能力越强。通过改变冷却壁的结构参数,降低冷却壁的耗散热阻或冷却水管内表面的对流热阻,是提高冷却壁性能的理论基础。
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引用次数: 0
Economical Evaluation of Energy Harvesting Using Vertical Axis Wind Turbine from a Wind Turbulence Created by Moving Cars 垂直轴风力发电机在移动车辆产生的风湍流中收集能量的经济性评估
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654414
Imad Alkalbani, F. M. Guangul
In recent years, the world has witnessed a huge industrial boom in various fields which resulted in an increase in demand for energy. The Sultanate of Oman is one of the oil and gas producing countries, and the country’s energy supply is mainly dependent on oil and gas. This makes the country vulnerable to future air pollution problems and run out of fossil fuels. To mitigate the problems, there is an increasing demand for research and investment in the field of renewable energy. This paper presents the electric energy that would be obtained from the wind energy generated from the cars’ movement turbulence along Muscat Expressway. For the study, the wind speed data was collected using Extech ADL310 Thermo-Anemometer. Four different vertical axis wind turbines (VAWT) were identified to predict the output electric power and its viability. The electric power generated from the wind using the VAWT is presumed to supply power to the expressway streetlights. From the study, it is proved that the street light power demand can be supplied by the 4000 W VAWT with a payback period of 9.2, 3.4, and 0.9 years for a cost of 0.03 OMR/kWh at a wind speed of 5, 7, and 11 m/s respectively. The payback period will be reduced to 4.6, 1.7, and 0.4 years if the government subsidy for the electric power is removed and its cost rises to 0.06 OMR/kWh.
近年来,世界上各个领域都出现了巨大的工业繁荣,这导致了对能源的需求增加。阿曼苏丹国是石油和天然气生产国之一,该国的能源供应主要依赖于石油和天然气。这使得该国容易受到未来空气污染问题的影响,并耗尽化石燃料。为了缓解这些问题,可再生能源领域的研究和投资需求不断增加。本文介绍了马斯喀特高速公路上汽车运动湍流产生的风能将获得的电能。在这项研究中,风速数据是使用Extech ADL310热风速计收集的。确定了四种不同的垂直轴风力发电机(VAWT),并对其输出功率和生存能力进行了预测。利用VAWT产生的风力发电被假定为高速公路路灯供电。研究证明,在风速分别为5、7、11 m/s时,4000 W VAWT可满足路灯电力需求,投资回收期为9.2年、3.4年、0.9年,成本为0.03 OMR/kWh。如果取消政府补贴,电费上升到0.06 OMR/kWh,回收期将缩短为4.6年、1.7年、0.4年。
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引用次数: 3
Evaluating the Potential of Using Floating Solar Photovoltaic on 12 Reservoirs of Electricity Generation Authority of Thailand Hydropower Plants 泰国水电站12座水库浮动太阳能光伏发电潜力评估
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654287
Promsak Sapthanakorn, S. Salakij
Owing to the energy crisis in Thailand, alternative energy, especially solar energy, must be utilized. According to the PDP (Thailand Power Development Plan), EGAT (Electricity Generation Authority of Thailand) has to use floating solar photovoltaic (FPV) in several dams. The purpose of this study is to evaluate the potential of using FPV on 12 reservoirs of EGAT hydropower plants in Thailand without affecting the normal operation of hydropower plants. The benefits of the FPV plant are analysed in terms of energy generation using the Perez 1990 algorithm, evaporation reduction using Shuttleworth 1993 algorithm, economic analysis, and greenhouse gas emission reduction. The analysis results are simulated based on the maximum coverage area of FPV that does not influence the normal operation of each reservoir. Based on the amount of energy production of all the considered 12 dams, the Srinagarind Dam can generate the highest power. In the Ubol Ratana dam, the water evaporates at the highest rate. In terms of investment, the production cost mainly depends on the plane of array (POA) of solar irradiance in each dam.
由于泰国的能源危机,必须利用替代能源,特别是太阳能。根据PDP(泰国电力发展计划),EGAT(泰国发电管理局)必须在几个水坝中使用浮动太阳能光伏(FPV)。本研究的目的是评估在泰国EGAT水电站的12个水库上使用FPV的潜力,而不影响水电站的正常运行。利用Perez 1990算法,利用Shuttleworth 1993算法,从能源产生、蒸发减少、经济分析和温室气体减排等方面分析了FPV电厂的效益。分析结果以不影响各水库正常运行的FPV最大覆盖面积为基础进行了模拟。根据所有被考虑的12座大坝的发电量,斯利那加林大坝可以产生最高的电力。在Ubol Ratana大坝,水蒸发的速度是最高的。在投资方面,生产成本主要取决于各坝的太阳辐照度面阵(POA)。
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引用次数: 3
A Promising Way of Energy Harvesting for Implantable Medical Devices – Thermoelectric Generator (TEG) 一种有前途的植入式医疗设备能量收集方法——热电发电机(TEG)
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654315
A. Zhang, Linyu Zhu
There is an increasing energy demand for implantable medical devices (IMD). The traditional driven approach has many defects such as short working time and periodic replacement, it is meaningful to seek other substitute ways of energy supply, like wireless power transfer or ultrasonic power transfer. There has been an increasing interest within the field of thermoelectric generator (TEG), which possesses much superiority when applied with IMDs. This paper aims to contribute to a primary understanding of thermoelectric generator, exploring the feasibility of applying TEG to IMDs to gain a more reliable performance and longer working life. Through the analysis of the characteristics of TEG and the existed research, this technology has been proved to be well-suitable to serve as the energy supply for IMDs.
植入式医疗器械(IMD)的能源需求不断增加。传统的驱动方式存在工作时间短、周期性更换等缺陷,寻求其他替代能源供应方式,如无线电力传输或超声波电力传输具有重要意义。热电发电机(TEG)在与imd结合使用时具有许多优势,因此受到越来越多的关注。本文旨在对热电发电机有一个初步的了解,探索将TEG应用于imd的可行性,以获得更可靠的性能和更长的工作寿命。通过分析TEG的特点和已有的研究,证明该技术非常适合作为imd的能源供应。
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引用次数: 1
Simulation-based Solar PV Module Maximum Output Power and Dust Accumulation Profiles 基于仿真的太阳能光伏组件最大输出功率和积尘分布
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654290
K. Tsamaase, J. Sakala, E. Rakgati, I. Zibani, E. Matlotse
Solar photovoltaic (PV) modules performance is very important as part of the performance of over overall solar PV system. The PV performance is affected by varying factors with some of such factors being external to the PV module design and construction. Dust accumulation on PV module surface is one of such factors because it limits solar irradiance incident in the PV module surface. This paper establishes the yearly maximum output power profile of a PV module and contrast such profile with yearly dust accumulation profile at the same site. A Simulink model and excel are used in the simulation and profiles development. The results show that the maximum power output is lowest around the months of May, June and July which is winter season in the southern hemisphere and improves gradually as summer months are approached. The results also show a close relationship between wind speed and dust accumulation where monthly accumulation increases with increasing wind speed and decreases with low wind speed. The yearly dust accumulation increases cumulatively from one month to the as opposed to the maximum power profile for the year.
太阳能光伏(PV)组件的性能是整个太阳能光伏系统性能的重要组成部分。光伏性能受到各种因素的影响,其中一些因素是光伏组件设计和构造的外部因素。光伏组件表面的粉尘堆积是其中一个因素,因为它限制了光伏组件表面的太阳辐照度。本文建立了光伏组件的年最大输出功率分布图,并与同一地点的年积尘分布图进行了对比。仿真和剖面图的开发使用了Simulink模型和excel。结果表明:在南半球冬季的5、6、7月份,最大功率输出最低,随着夏季的临近,最大功率输出逐渐提高;月累积量随风速的增大而增大,随风速的减小而减小。年积尘量从一个月累积到一个月,而不是一年中最大功率剖面。
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引用次数: 0
Elasticities of Residential Electricity Demand in Vietnam 越南居民电力需求的弹性
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654369
Kien Duong Trung, Chi Vu Tuyet
Like many countries in the world, Vietnam hopes to optimize the efficiency and conservation of energy, as well as reducing environmental pollution. One of the current challenges is the problem of using electricity for households: 1) The proportion of electricity consumption is relatively high of the total; 2) Power consumption is mainly concentrated during peak hours. It is very difficult to ensure a constant supply of energy, especially during the hot summer, which causes great pressure on national energy security. Therefore, this study focuses on the calculation and analysis of the elasticicities to determine the factors affecting the electricity consumption of households in Vietnam. Hopefully, this study will allow a management agency to deliberate plans to improve the efficiency of domestic electricity use to ensure safety energy security.
与世界上许多国家一样,越南希望优化能源效率和节约能源,并减少环境污染。目前面临的挑战之一是家庭用电问题:1)用电量占总用电量的比例相对较高;2)用电量主要集中在高峰时段。特别是在炎热的夏季,很难保证能源的持续供应,给国家能源安全带来很大压力。因此,本研究侧重于弹性系数的计算和分析,以确定影响越南家庭用电的因素。希望这项研究能让管理机构制定出提高家庭用电效率的计划,以确保安全的能源保障。
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引用次数: 0
Design and In-Orbit Application of Power Supply System for Orbiter of Chang’E-5 嫦娥五号轨道器供电系统设计及在轨应用
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654423
J. Wu, T. Zhang, J. Zhou, D. Liu, K. Zhou, Y. Liu
Based on the framework of “solar cell array+battery groups” used in the first and second phases of lunar exploration, the power supply system of orbiter is designed according to the characteristics of the lunar sampling and return mission of Chang’E-5 lunar exploration. This paper introduces the mission requirements and characteristics of the power system of Chang’E-5 orbiter. According to the power demand of the orbiter in different flight stages, the operation mode of the power framework is proposed. The control and protection strategy are designed considering the faced problems. Through the shunt and discharge regulation of solar array and charge and discharge regulation of battery group, the stability of bus voltage and efficient management as well as the reasonable distribution of power are ensured. The on-orbit data show that the power supply system works well, which proves the feasibility of the design. It can be used for reference for the design of the power system in the lunar orbital base and other deep space exploration missions in the future.
根据嫦娥五号月球探测取样与返回任务的特点,在一、二期月球探测采用“太阳能电池阵列+电池组”框架的基础上,设计了轨道器供电系统。介绍了嫦娥五号轨道飞行器的任务要求和动力系统的特点。根据轨道飞行器在不同飞行阶段的动力需求,提出了动力框架的工作模式。针对所面临的问题,设计了控制和保护策略。通过太阳能电池阵的分流和放电调节以及电池组的充放电调节,保证了母线电压的稳定和高效的管理以及功率的合理分配。在轨数据表明,该供电系统工作良好,证明了该设计的可行性。可为今后月球轨道基地及其他深空探测任务的动力系统设计提供参考。
{"title":"Design and In-Orbit Application of Power Supply System for Orbiter of Chang’E-5","authors":"J. Wu, T. Zhang, J. Zhou, D. Liu, K. Zhou, Y. Liu","doi":"10.1109/ICSCGE53744.2021.9654423","DOIUrl":"https://doi.org/10.1109/ICSCGE53744.2021.9654423","url":null,"abstract":"Based on the framework of “solar cell array+battery groups” used in the first and second phases of lunar exploration, the power supply system of orbiter is designed according to the characteristics of the lunar sampling and return mission of Chang’E-5 lunar exploration. This paper introduces the mission requirements and characteristics of the power system of Chang’E-5 orbiter. According to the power demand of the orbiter in different flight stages, the operation mode of the power framework is proposed. The control and protection strategy are designed considering the faced problems. Through the shunt and discharge regulation of solar array and charge and discharge regulation of battery group, the stability of bus voltage and efficient management as well as the reasonable distribution of power are ensured. The on-orbit data show that the power supply system works well, which proves the feasibility of the design. It can be used for reference for the design of the power system in the lunar orbital base and other deep space exploration missions in the future.","PeriodicalId":329321,"journal":{"name":"2021 International Conference on Smart City and Green Energy (ICSCGE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125081102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the Influence of Reactor Core Structure on Reactor Natural Vibration Frequency 反应堆堆芯结构对反应堆自振频率影响的研究
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654304
Yuan Zhou, Tian Tian, Xiongfei Yu, Ran Ren, Liangcai Zhou, Qiong Yang
When the reactor operates under normal conditions, it will produce a certain vibration with 100Hz as the fundamental frequency, and when this vibration coincides with the natural vibration frequency of the reactor core, it will cause resonance between the two. Therefore, in order to solve this problem, this paper proposes an adjustment method of the natural vibration frequency of the reactor core, which adjusts the length of the air gap by adding an air gap into the reactor core Position and quantity are three parameters to accurately control the natural vibration frequency of reactor core, so as to avoid the resonance frequency range. Through COMSOL finite element simulation, it is found that with the increase of reactor air gap length, the natural vibration frequency of reactor core basically decreases linearly, and the natural vibration frequency of high-order mode decreases faster; At the same time, with the increase of the number of air gaps in the core, the natural vibration frequency of the reactor core basically decreases linearly; Moreover, the air gap at the lower part of the reactor core has a greater impact on its natural vibration frequency, and the air gap at the upper part has a smaller impact. Therefore, when adjusting the natural frequency of the reactor core, the number or length of air gap at the lower part of the core can be increased. This study can provide numerical reference for reactor vibration reduction.
电抗器在正常工况下运行时,会产生以100Hz为基频的一定振动,当该振动与电抗器堆芯的自振频率重合时,就会引起两者之间的共振。因此,为了解决这一问题,本文提出了一种电抗堆芯自振频率的调节方法,即通过在电抗堆芯中增加一个气隙来调节气隙的长度。位置和数量是三个参数,可以精确控制电抗堆芯的自振频率,从而避免谐振频率范围。通过COMSOL有限元模拟发现,随着电抗器气隙长度的增加,电抗器堆芯的自振频率基本呈线性降低,且高阶模态的自振频率降低较快;同时,随着堆芯气隙数量的增加,堆芯自振频率基本呈线性降低;而且,电抗器堆芯下部气隙对其固有振动频率的影响较大,上部气隙的影响较小。因此,在调节电抗器堆芯的固有频率时,可以增加堆芯下部气隙的数量或长度。该研究可为反应器减振提供数值参考。
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引用次数: 0
Asset Management Model for the Transformer Fleet of the National Laboratory of Smart Grids (LAB+i) Based on Fuzzy Logic and Forecasting 基于模糊逻辑和预测的智能电网国家实验室变压器机队资产管理模型
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654425
Kevin Steven Morgado Gómez, Javier A. Rosero García
Smart grids have gained attention in recent years in the field of smart cities as a key parameter for the electrical power service, adapted to the new forms of generation and processes associated with the use of electricity. In this sense, the diagnosis of the state of the infrastructure is important to ensure its operation, in which the power transformer is the key element. For this reason, this article presents an Asset Management methodology based on prediction and fuzzy logic to identify the condition of the transformer fleet from the National Laboratory of Smart Grids (LAB+i), considering its conditions. First, the forecasting system is presented together with the base parameters of the fuzzy logic system. Then an implementation analysis is performed with real data. This development allowed identifying the opportunity of using this system in different scenarios, with the challenges and benefits of the prediction methods in the Asset Management framework.
近年来,智能电网作为电力服务的关键参数,适应了与电力使用相关的新的发电形式和过程,在智慧城市领域受到了关注。从这个意义上说,基础设施的状态诊断对于保证其正常运行具有重要意义,而电力变压器是其中的关键部件。为此,本文提出了一种基于预测和模糊逻辑的资产管理方法,用于识别智能电网国家实验室(LAB+i)考虑其条件的变压器机队状况。首先,给出了模糊逻辑系统的基本参数和预测系统。并结合实际数据进行了实现分析。这一发展允许识别在不同场景中使用该系统的机会,以及资产管理框架中预测方法的挑战和好处。
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引用次数: 0
Quantitative Analysis of Key Influencing Factors of Renewable Energy Accommodation in Hunan Power Grid 湖南电网可再生能源调节关键影响因素定量分析
Pub Date : 2021-11-20 DOI: 10.1109/ICSCGE53744.2021.9654318
Ding Wang, Yangwu Shen, Zhu Shao, Zhen Hu, Luxi Hao, Jian Zuo
By the end of 2020, the installed capacity of renewable energy in Hunan Power Grid is close to 10.6 million kW, accounting for 19% of the total installed capacity of the province. It is the third largest power source of Hunan Power Grid. Because of being limited by the anti-peaking characteristics of renewable energy, the large peak-valley difference of power load, the lack of adjustability of a large amount of hydropower in flood season, the contradiction of renewable energy accommodation has gradually become prominent. By the end of the 14th Five Year Plan, the renewable energy capacity will further double, and exceed hydropower to become the second largest power source in the province. The accommodation situation is unclear, and relevant research is urgently needed. Against the above background, this article focuses on the current status of the renewable energy power generation operation of the Hunan Power Grid, and sorts out the key technical reasons that affect the accommodation of renewable energy. This paper also conducts sensitivity analysis of key influencing factors to quantify the effect of key influencing factors on renewable energy accommodation. Studies have shown that energy storage instead of conventional thermal power can solve problems such as insufficient peak shaving capacity of the power grid and difficulty in absorbing renewable energy. It is of great significance to achieve the goal of reaching carbon peaks and to ensure the safety of energy and power in the province.
到2020年底,湖南电网可再生能源装机容量接近1060万千瓦,占全省总装机容量的19%。是湖南电网的第三大电源。由于受可再生能源抗峰特性、电力负荷峰谷差大、汛期大量水电缺乏可调性等限制,可再生能源调节的矛盾逐渐凸显。到“十四五”末,可再生能源装机容量将进一步翻番,超过水电成为全省第二大电力来源。住宿情况尚不清楚,迫切需要相关研究。在上述背景下,本文重点分析了湖南电网可再生能源发电运行现状,并对影响可再生能源适配的关键技术原因进行了梳理。并对关键影响因素进行敏感性分析,量化关键影响因素对可再生能源调节的影响。研究表明,储能替代传统火电可以解决电网调峰能力不足、可再生能源难以吸收等问题。这对实现碳峰达标目标,保障全省能源电力安全具有重要意义。
{"title":"Quantitative Analysis of Key Influencing Factors of Renewable Energy Accommodation in Hunan Power Grid","authors":"Ding Wang, Yangwu Shen, Zhu Shao, Zhen Hu, Luxi Hao, Jian Zuo","doi":"10.1109/ICSCGE53744.2021.9654318","DOIUrl":"https://doi.org/10.1109/ICSCGE53744.2021.9654318","url":null,"abstract":"By the end of 2020, the installed capacity of renewable energy in Hunan Power Grid is close to 10.6 million kW, accounting for 19% of the total installed capacity of the province. It is the third largest power source of Hunan Power Grid. Because of being limited by the anti-peaking characteristics of renewable energy, the large peak-valley difference of power load, the lack of adjustability of a large amount of hydropower in flood season, the contradiction of renewable energy accommodation has gradually become prominent. By the end of the 14th Five Year Plan, the renewable energy capacity will further double, and exceed hydropower to become the second largest power source in the province. The accommodation situation is unclear, and relevant research is urgently needed. Against the above background, this article focuses on the current status of the renewable energy power generation operation of the Hunan Power Grid, and sorts out the key technical reasons that affect the accommodation of renewable energy. This paper also conducts sensitivity analysis of key influencing factors to quantify the effect of key influencing factors on renewable energy accommodation. Studies have shown that energy storage instead of conventional thermal power can solve problems such as insufficient peak shaving capacity of the power grid and difficulty in absorbing renewable energy. It is of great significance to achieve the goal of reaching carbon peaks and to ensure the safety of energy and power in the province.","PeriodicalId":329321,"journal":{"name":"2021 International Conference on Smart City and Green Energy (ICSCGE)","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115966666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
2021 International Conference on Smart City and Green Energy (ICSCGE)
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