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Assessment of Axial Power Peaking Factors in GHARR-1 LEU Core: A Decadal Simulation Analysis
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作者 Emmanuel Kwame Ahiave Emmanuel Ampomah-Amoako +1 位作者 Rex Gyeabour Abrefah Mathew Asamoah 《World Journal of Nuclear Science and Technology》 CAS 2024年第1期72-85,共14页
This study aims to thoroughly investigate the axial power peaking factors (PPF) within the low-enriched uranium (LEU) core of the Ghana Research Reactor-1 (GHARR-1). This study uses advanced simulation tools, like the... This study aims to thoroughly investigate the axial power peaking factors (PPF) within the low-enriched uranium (LEU) core of the Ghana Research Reactor-1 (GHARR-1). This study uses advanced simulation tools, like the MCNPX code for analysing neutron behavior and the PARET/ANL code for understanding power variations, to get a clearer picture of the reactor’s performance. The analysis covers the initial six years of GHARR-1’s operation and includes projections for its whole 60-year lifespan. We closely observed the patterns of both the highest and average PPFs at 21 axial nodes, with measurements taken every ten years. The findings of this study reveal important patterns in power distribution within the core, which are essential for improving the safety regulations and fuel management techniques of the reactor. We provide a meticulous approach, extensive data, and an analysis of the findings, highlighting the significance of continuous monitoring and analysis for proactive management of nuclear reactors. The findings of this study not only enhance our comprehension of nuclear reactor safety but also carry significant ramifications for sustainable energy progress in Ghana and the wider global context. Nuclear engineering is essential in tackling global concerns, such as the demand for clean and dependable energy sources. Research on optimising nuclear reactors, particularly in terms of safety and efficiency, is crucial for the ongoing advancement and acceptance of nuclear energy. 展开更多
关键词 GHARR-1 power Peaking Factor Nuclear Reactor Safety Low Enriched Uranium Core operational Longevity thermal hydraulics
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Electricity-Carbon Interactive Optimal Dispatch of Multi-Virtual Power Plant Considering Integrated Demand Response
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作者 Shiwei Su Guangyong Hu +2 位作者 Xianghua Li Xin Li Wei Xiong 《Energy Engineering》 EI 2023年第10期2343-2368,共26页
As new power systems and dual carbon policies develop,virtual power plant cluster(VPPC)provides another reliable way to promote the efficient utilization of energy and solve environmental pollution problems.To solve t... As new power systems and dual carbon policies develop,virtual power plant cluster(VPPC)provides another reliable way to promote the efficient utilization of energy and solve environmental pollution problems.To solve the coordinated optimal operation and low-carbon economic operation problem in multi-virtual power plant,a multi-virtual power plant(VPP)electricity-carbon interaction optimal scheduling model considering integrated demand response(IDR)is proposed.Firstly,a multi-VPP electricity-carbon interaction framework is established.The interaction of electric energy and carbon quotas can realize energy complementarity,reduce energy waste and promote low-carbon operation.Secondly,in order to coordinate the multiple types of energy and load in VPPC to further achieve low-carbon operation,the IDR mechanism based on the user comprehensive satisfaction(UCS)of electricity,heat as well as hydrogen is designed,which can effectively maintain the UCS in the cluster within a relatively high range.Finally,the unit output scheme is formulated to minimize the total cost of VPPC and the model is solved using theCPLEX solver.The simulation results showthat the proposed method effectively promotes the coordinated operation among multi-VPP,increases the consumption rate of renewable energy sources and the economics of VPPC and reduces carbon emissions. 展开更多
关键词 Virtual power plant cluster carbon quota interaction electricity interaction integrated demand response user comprehensive satisfaction coordinated optimal operation
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Study on integrated development and hybrid operation mode of nuclear power plant and pumped-storage power station 被引量:6
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作者 Haizheng Wang Caide Peng 《Global Energy Interconnection》 2019年第4期336-341,共6页
The nuclear power plant is suitable for base-load operation, while the pumped-storage unit mainly gives play to capacity benefit in the electric power system;hence, the integrated development and hybrid operation mode... The nuclear power plant is suitable for base-load operation, while the pumped-storage unit mainly gives play to capacity benefit in the electric power system;hence, the integrated development and hybrid operation mode of the two can better meet the needs of the electric power system. This article first presents an analysis of the necessity and superiority of such mode, then explains its meaning and analyzes the working routes. Finally, it proposes the business modes as follows: low price pumping water electricity plus nuclear power in the near term;nuclear power shifted to pumped storage power participating in market competition in the middle term;and, in the long term, nuclear power shifted to pumped storage power as primary and serving as an electric power system when needed. 展开更多
关键词 NUCLEAR power plant Pumped-storage power STATION Integrated development HYBRID operation MODES
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A method of parsing based on improving the electricity behavior and regulating excitation system of the diesel generating set in the nuclear power plant
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作者 Meng Wang 《Modern Electronic Technology》 2017年第1期30-32,共3页
This paper introduces an applicable test plan for emergency diesel generator in nuclear power plant. It advances improvement approaches with problems found during field commissioning test and its trouble-shooting proc... This paper introduces an applicable test plan for emergency diesel generator in nuclear power plant. It advances improvement approaches with problems found during field commissioning test and its trouble-shooting processes. The method is based on the integration of complementary through, the extension theory of matter-element model and neural network theory combine to overcome a neural network to learn shelters, and other defects. The purpose of this paper is to provide the better running and commissioning experience for the similar emergency generator unit. 展开更多
关键词 Nuclear power plant EMERGENCY DIESEL GENERATOR unit Commissioning operation
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Design and Evaluation Tool for Operations and Maintenance Logistics Concepts for Offshore Wind Power Plants
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作者 Torsten Mansterberg Robert Rauer Carlos Jahn 《Journal of Energy and Power Engineering》 2013年第11期2054-2059,共6页
In this article, the authors give an overview of different logistics concepts for operation and maintenance of OWPP (offshore wind power plants). These can be generally classified into onshore based and offshore bas... In this article, the authors give an overview of different logistics concepts for operation and maintenance of OWPP (offshore wind power plants). These can be generally classified into onshore based and offshore based concepts. The operation of OWPPs can still be improved as research has shown that the availability of OWPPs is low compared to onshore wind power plants. There are a few tools to calculate operating costs and to evaluate the different concepts. However, most tools have a weak focus on logistics although logistics account for a big share of the costs. The tool the authors are introducing in this article focuses on the logistics processes. It is first explained and then tested with an OWPP scenarin 展开更多
关键词 offshore wind energy offshore wind power plants operations and maintenance logistics concepts design and evaluationtool simulation.
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The first thermal power plant project solely invested by foreign firms in china-The first generating unit in Meizhouwan Thermal Power Plant went into commercial operation
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《Electricity》 2000年第3期45-45,共1页
关键词 the first thermal power plant project solely invested by foreign firms in china-the first generating unit in Meizhouwan thermal power plant went into commercial operation
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The China's First Exported Nuclear Power Plant Began Trial Operation in Pakistan
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《Electricity》 2000年第2期57-57,共1页
关键词 the China’s First Exported Nuclear power plant Began Trial operation in Pakistan
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DSS Scheme for Operation Optimization Problem on Power Plants 被引量:1
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作者 江浩 徐治皋 《Journal of Southeast University(English Edition)》 EI CAS 2002年第3期212-215,共4页
Based on the target analysis of the operation optimization for power plants, a novel system scheme called operation optimization decision support system (OODSS) is brought forward. According to the structure and desig... Based on the target analysis of the operation optimization for power plants, a novel system scheme called operation optimization decision support system (OODSS) is brought forward. According to the structure and design thinking of decision support system (DSS), the overall structure of the OODSS is studied, and the scheme of the sub systems in the OODSS such as the user interface system, the problem processing system, the database system, the model base system, the expert system (ES) and the data mining sy... 展开更多
关键词 power plant operation optimization DSS database system model base system data mining expert system
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Effect of Modeling Range on Structural Analysis for Powerhouse of Hydroelectric Power Plant by FEM 被引量:1
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作者 张启灵 伍鹤皋 杨华全 《Transactions of Tianjin University》 EI CAS 2009年第5期388-392,共5页
In this paper,three different modeling ranges were selected in the structural analysis for a hydropower house.The analysis was carried out using ABAQUS 6.6.The modeling range has a remarkable effect on finite element ... In this paper,three different modeling ranges were selected in the structural analysis for a hydropower house.The analysis was carried out using ABAQUS 6.6.The modeling range has a remarkable effect on finite element method(FEM) calculation result at the middle position of typical cross-sections where the concrete is relatively thin,and at the region close to turbine floor.If the ventilation barrel,floor slabs and columns above turbine floor are excluded from FEM model,the maximum rise difference of pedestal structure increases by about 24% compared with that of the whole model.It is indicated that different modeling ranges indeed affect FEM calculation result,and the structure above turbine floor in the FEM model should be included. 展开更多
关键词 hydraulic structures hydroelectric power plants powerHOUSE modeling range FEM structural analysis
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Weihe Power Plant sold 51% operation right
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《Electricity》 1996年第3期39-39,共1页
To extensively finance power construction fund, the Shaanxi Provincial Government has sold part of its Weihe Power Plant time limited operation right to Hong Kong China Travel Service (Group) Company Ltd. The contract... To extensively finance power construction fund, the Shaanxi Provincial Government has sold part of its Weihe Power Plant time limited operation right to Hong Kong China Travel Service (Group) Company Ltd. The contract for jointly running the newly built Weihe Power Plant was signed by representatives from Hong Kong China Travel Service (Group) Co., Northwest Electric Power Group Company and Shaanxi Provincial Electric Power Investment Corp. on May 24, 1996. The construction of Weihe New Power Plant was commenced in 1988 with a 展开更多
关键词 Weihe power plant sold 51 operation right CO
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Operational Skill and TNA (Training Needs Analysis) for Generation Power Plant
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作者 Aouda Arfoa Qais Alsafasfeh +1 位作者 Omar Alsaraereh Jaber Alrawahi 《Journal of Energy and Power Engineering》 2015年第8期753-759,共7页
Training needs analysis is the preliminary step in a cyclical process which adds to the overall training and progress strategy of staff in a generation power plant or a professional group, questionnaires were distribu... Training needs analysis is the preliminary step in a cyclical process which adds to the overall training and progress strategy of staff in a generation power plant or a professional group, questionnaires were distributed among WAJPCO (Wadi Al Jizzi Power Company) staff and their responses were used to conduct a training need and gap analyses with a view to identify the operational skill and the training needs of the generation power plant, the time and travel commitment the industry is willing to invest in employee training, and an understanding of what skills are considered specific to lumber manufacturing and what can be combined with the needs of other industries and taught locally. 展开更多
关键词 Training needs analysis power plant operational skill.
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Advanced Coordinating Control System for Power Plant
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作者 WU Peng~1 WEI Shuangying~2 1.Automation School,Chongqing University,Campus A,Chongqin 400044,China 2.Management School,Wuhan University of Technology,Wuhan 430070,China, 《武汉理工大学学报》 CAS CSCD 北大核心 2006年第S3期962-968,共7页
The coordinating control system is popular used in power plant.This paper describes the advanced coordinating control by control methods and optimal operation,introduces their principals and features by using the exam... The coordinating control system is popular used in power plant.This paper describes the advanced coordinating control by control methods and optimal operation,introduces their principals and features by using the examples of power plant op- eration.It is wealthy for automation application in optimal power plant operation. 展开更多
关键词 power plant coordinating CONTROL system AUTOMATION operation
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Increasing Coal-Fired Power Plant Operational Flexibility by Integrating Solar Thermal Energy and Compressed Air Energy Storage System 被引量:1
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作者 LI Xiaoyu WANG Yumeng +4 位作者 ZHANG Xinjing LI Bin XU Yujie CHEN Haisheng SHENG Siqing 《Journal of Thermal Science》 SCIE EI CAS CSCD 2023年第6期2032-2047,共16页
This paper proposed a novel integrated system with solar energy,thermal energy storage(TES),coal-fired power plant(CFPP),and compressed air energy storage(CAES)system to improve the operational flexibility of the CFPP... This paper proposed a novel integrated system with solar energy,thermal energy storage(TES),coal-fired power plant(CFPP),and compressed air energy storage(CAES)system to improve the operational flexibility of the CFPP.A portion of the solar energy is adopted for preheating the boiler’s feedwater,and another portion is stored in the TES for the CAES discharging process.Condensate water from the CFPP condenser is used for cooling compressed air during the CAES charging process.The thermodynamic performance of the integrated system under different load conditions is studied.The system operations in a typical day are simulated with EBSILON software.The system enables daily coal saving of 9.88 t and reduces CO_(2)emission by 27.95 t compared with the original CFPP at 100%load.Under partial load conditions,the system enables maximum coal saving of 10.29 t and maximum CO_(2)emission reduction of 29.11 t at 75%load.The system has maximum peak shaving depth of 9.42%under 40%load condition.The potential of the system participating ancillary service is also discussed.It is found that the integration of solar thermal system and CAES system can bring significant ancillary service revenue to a conventional CFPP. 展开更多
关键词 solar thermal compressed air energy storage coal-fired power plant thermal energy storage operation flexibility ancillary service
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New Analytical Model for Optimal Placement of Wind Turbines in Power Network under Pool and Reserve Markets Conditions
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作者 Babak Safari Chabok Ahmad Ashouri +2 位作者 Majid Yekta Khalilsaraei Hossein Shahidi Moghadam Fariborz Ghasemi 《Energy and Power Engineering》 2016年第10期313-325,共13页
In this paper a new market based analytical model is proposed for optimal placement of Wind Turbines (WTs) in power systems. In addition to wind turbines, thermal units (THUs) and Pumped Storage Hydro Power Plants (PS... In this paper a new market based analytical model is proposed for optimal placement of Wind Turbines (WTs) in power systems. In addition to wind turbines, thermal units (THUs) and Pumped Storage Hydro Power Plants (PSHPPs) owners participate in power market. Objective function is defined as participants’ social welfare achieved from power pool and ancillary markets in yearly horizon. Wind turbines have been modeled by probability-generation tree scenarios based on statistical information. We concentrate on investment profits of WTs numbers and its generation capacity beside to PSHPPs and THUs power plants in power systems due to increase in high flexible tools for Independent system operator into the planning and operation planning time interval. For effectiveness evaluation of proposed model, simulation studies are applied on 14-Bus IEEE test power system. 展开更多
关键词 Wind Turbine Pumped Storage Hydro power plants (PSHPPs) power Pool and Ancillary Market Independent System Operator
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Analysis on Operation Reliability of Generating Units in 2009
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作者 Zhou Hong Power Reliability Management Center Li Shixue 《Electricity》 2010年第3期26-31,共6页
This paper presents the data on operation reliability indices and relevant analyses toward China's conventional power generating units in 2009.The units brought into the statistical analysis include 100-MW or abov... This paper presents the data on operation reliability indices and relevant analyses toward China's conventional power generating units in 2009.The units brought into the statistical analysis include 100-MW or above thermal generating units,40-MW or above hydro generating units,and all nuclear generating units.The reliability indices embodied include utilization hours,times and hours of scheduled outages,times and hours of unscheduled outages,equivalent forced outage rate and equivalent availability factor. 展开更多
关键词 power plant generating unit operation reliability statistical data
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Performance of Nonwoven Filter Materials Based on the Operating Condition
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作者 周蓉 杨舒先 +1 位作者 余娟 吕艳如 《Journal of Donghua University(English Edition)》 EI CAS 2016年第4期656-659,共4页
The practical condition of needle-punched filters applied in coal-fired power plants is investigated. According to the actual operating conditions, two common filters (glass fiber filter and polyphenylene sulfide (PPS... The practical condition of needle-punched filters applied in coal-fired power plants is investigated. According to the actual operating conditions, two common filters (glass fiber filter and polyphenylene sulfide (PPS) filter) are selected for experiment. The performance of these two kinds of filter is compared based on a series of tests such as resistance to the acid and alkali, oxidation resistance,hydrolysis resistance,and wear resistance. Experimental results show that PPS filter materials have better properties than those of glass filter material except oxidation resistance. Composite filter mixed glass fiber and PPS is recommended for polluters because of its good properties in all aspects. 展开更多
关键词 hydrolysis retention fired alkali sulfide filtration permeability fabric chemically needle
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基于动态掺氢策略的综合能源系统低碳经济调度
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作者 魏震波 李杰 +3 位作者 杨超 张芷琪 袁坤 潘睿 《电网技术》 EI CSCD 北大核心 2024年第8期3155-3164,I0025-I0030,共16页
针对现有综合能源系统中传统碳捕集电厂灵活性较差,电负荷系数、管道长度和管道运维成本等因素对计及气网掺氢的综合能源系统调度的影响尚未明确等问题,提出了一种基于动态掺氢策略的综合能源系统低碳经济调度模型。首先,建立综合灵活... 针对现有综合能源系统中传统碳捕集电厂灵活性较差,电负荷系数、管道长度和管道运维成本等因素对计及气网掺氢的综合能源系统调度的影响尚未明确等问题,提出了一种基于动态掺氢策略的综合能源系统低碳经济调度模型。首先,建立综合灵活碳捕集电厂模型,对二氧化碳的吸收与再生环节进行解耦;其次,建立基于动态掺氢的管道运维成本模型,实现掺氢比的动态调整,提高系统调度的灵活性;然后,引入阶梯式碳交易机制,构建考虑气网掺氢管道运维成本的综合能源系统低碳经济调度模型,利用McCormick松弛方法将非线性问题转化为线性问题,并进行求解。最后,算例仿真结果表明:气网各节点处管道运维成本系数与气体体积、输送距离等因素相关,应综合考虑上述因素对气体定价;在综合能源系统调度中综合考虑电负荷系数、气网管道长度等因素合理选择气网掺氢比上限、制定动态掺氢策略,系统的经济效益与环境效益分别提高了44.1%、47.8%。 展开更多
关键词 低碳经济调度 综合灵活碳捕集电厂 气网动态掺氢策略 管道运维成本 McCormick
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Design and Operational Strategy Research for Temperature Control Systems of Isothermal Compressed Air Energy Storage Power Plants 被引量:2
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作者 FU Hao JIANG Tong +1 位作者 CUI Yan LI Bin 《Journal of Thermal Science》 SCIE EI CAS CSCD 2019年第2期204-217,共14页
Energy storage technology is critical for intelligent power grids. It has great significance for the large-scale integration of new energy sources into the power grid and the transition of the energy structure. Based ... Energy storage technology is critical for intelligent power grids. It has great significance for the large-scale integration of new energy sources into the power grid and the transition of the energy structure. Based on the existing technology of isothermal compressed air energy storage, this paper presents a design scheme of isothermal compressed air energy storage power station, which uses liquid to compress air, hydraulic piston to transfer potential energy, hydraulic turbine to generate electricity at constant pressure, and liquid occupancy to store the gas at constant pressure. Then the technical features and control strategies of its internal temperature control subsystem are studied, and the mathematical model is constructed. A hierarchical relay operation is put forward to address the actual construction and operational requirements of compressed air energy storage power plants. Finally, through physical platform experiments and MATLAB simulation, the feasibility of the design is validated. 展开更多
关键词 HIERARCHICAL RELAY operation ISOtheRMAL compression compressed air ENERGY STORAGE power plant ENERGY STORAGE
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多能互补发电系统故障识别与测距方法
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作者 刘婷 罗皓鹏 +2 位作者 王斌 吴凤娇 徐哲熙 《科学技术与工程》 北大核心 2024年第6期2405-2413,共9页
随着大量新能源的接入,使得多端柔性直流系统(modular multilevel converter based multi-terminal direct current, MMC-MTDC)故障特征愈加复杂,快速准确的故障识别与测距是亟需解决的关键难题之一。为此,提出了一种风-光-储-蓄互补发... 随着大量新能源的接入,使得多端柔性直流系统(modular multilevel converter based multi-terminal direct current, MMC-MTDC)故障特征愈加复杂,快速准确的故障识别与测距是亟需解决的关键难题之一。为此,提出了一种风-光-储-蓄互补发电站经柔性直流输电外送系统故障识别与测距方法。首先,搭建风-光-储-蓄互补发电站经柔直外送系统,在此基础上,提出了一种Teager能量算子能量熵的新方法,利用测量点正负极Teager能量算子能量熵的比值构建故障选极及区段识别判据。接着,针对已识别的故障线路,提出变分模态分解(variational mode decomposition, VMD)与Teager能量算子(teager energy operator, TEO)相结合的故障测距方法。最后,利用PSCAD/EMTDC进行仿真,结果表明所提识别方法可以准确判断故障所在线路,所提测距方法能在故障发生2 ms时间窗内实现故障测距,误差率不超过2.55%,并具有较高的耐过渡电阻能力。 展开更多
关键词 多端柔性直流系统 风-光-储-蓄互补发电站 Teager能量算子能量熵 故障识别 故障测距
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考虑灵活碳捕集电厂与抽水蓄能联合的广义经济调度策略 被引量:3
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作者 黄文涛 罗杰 +3 位作者 葛磊蛟 何俊 贺忠尉 王歆智 《中国电机工程学报》 EI CSCD 北大核心 2024年第4期1430-1445,I0015,共17页
“双碳”背景下,灵活碳捕集电厂成为风光大规模并网后保供电和低碳化的重要过渡电源之一;然而,因其储液容量制约和风光反调峰特性造成系统在应对持续增大的负荷峰谷差时存在局限,容易造成风光流失且碳经济性不高。为此,该文引入具有双... “双碳”背景下,灵活碳捕集电厂成为风光大规模并网后保供电和低碳化的重要过渡电源之一;然而,因其储液容量制约和风光反调峰特性造成系统在应对持续增大的负荷峰谷差时存在局限,容易造成风光流失且碳经济性不高。为此,该文引入具有双向快速功率调节能力的大容量储能-抽水蓄能,提出一种基于灵活碳捕集电厂与抽水蓄能联合的广义经济调度策略;广义经济调度综合电厂运行成本、电网净负荷经济效益、碳经济效益等多种元素。首先充分利用能耗时移特性和抽水蓄能的双倍调节能力,结合净负荷典型峰谷特征制定二者联合运行在电碳解耦下“峰互补、谷协同”机制,实现深度调峰下兼顾碳捕集和新能源消纳;进而构建电-碳市场下考虑灵活性约束等因素的广义经济成本最小为目标的调度模型,用模糊参数表征净负荷的不确定性,采用改进灰狼算法求解。仿真结果表明所提两者联合的广义经济调度策略相较于仅考虑灵活碳捕集电厂,综合成本降低25.33%,碳排放量减少18.71%,弃风弃光成本下降98.70%,验证了所提联合调度策略的优越性。 展开更多
关键词 碳捕集电厂 抽水蓄能 联合运行 广义经济调度
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