Most Downloaded Articles

Published in last 1 year | In last 2 years| In last 3 years| All| Most Downloaded in Recent Month | Most Downloaded in Recent Year|

In last 3 years

Please wait a minute...


For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails

Select

Review on solar thermal power generation technologies and their development ZHANG Jinping, ZHOU Qiang, WANG Dingmei, LI Jin, LIU Lijuan Integrated Intelligent Energy    2023, 45 (2): 44-52.   DOI: 10.3969/j.issn.2097-0706.2023.02.006 Abstract （309）   HTML （11）    PDF （928KB）（2125）       Knowledge map    Save Under the "dual carbon" target， new energy ushers in a leapfrog development，which makes an higher requirement for power system flexibility. The regulation capacity of concentrating solar power （CSP）plants can rival that of conventional thermal units. CSP plants can participate in peak load and frequency regulations timely and deeply， which improves the flexibility of the power system. Thus，CSP is a promising renewable energy generation technology. Based on the introduction on the operation principle and structure of a CSP plant， the advantages，disadvantages and research progress of various CSP technologies are analyzed. The problems and development direction of CSP technology are discussed based on the status quo and demand of CSP. Table and Figures | Reference | Related Articles | Metrics

Select

Study on the status quo and development trend of grid-forming converter technology YU Guo, WU Jun, XIA Re, CHEN Yihui, GUO Zihui, HUANG Wenxin Integrated Intelligent Energy    2022, 44 (9): 65-70.   DOI: 10.3969/j.issn.2097-0706.2022.09.009 Abstract （468）   HTML （9）    PDF （1104KB）（1577）       Knowledge map    Save Due to the numerous electric and electrical devices and high-penetration new energy in a power system,the system's inertia tends to decrease and its strength and stability are hampered. In order to improve the stability of the system,a grid-forming converter technology which gives play to the flexibility and controllability of converters,compensates for the missing inherent inertia damping and provides reliable voltage and frequency support for the system is proposed.Based on the comparison between grid-forming control and gird-following control technologies,different network construction control strategies are analyzed. Then, the grid-forming high-pressure energy storage technology is introduced.The bottlenecks,challenges and feasible solutions of the technology are pointed out.The research results show that since the grid construction control technology can effectively improve the inertia damping,and provide the voltage and frequency support for the power system,it is promising in new power systems with high proportion of new energy and a large quantity of electronic equipment. Table and Figures | Reference | Related Articles | Metrics

Select

Review on water electrolysis for hydrogen production powered by fluctuating wind power and PV Leijiao GE, Qingxue CUI, Mingwei LI, Fang YAO, Xiaona YANG, Tianshuo DU Integrated Intelligent Energy    2022, 44 (5): 1-14.   DOI: 10.3969/j.issn.2097-0706.2022.05.001 Abstract （402）   HTML （10）    PDF （1559KB）（1108）       Knowledge map    Save Water electrolysis for hydrogen production powered by green energy such as PV and wind power is an important technical rout to realize the national energy strategy of carbon neutrality and carbon peaking. Nevertheless,the volatility of wind power and PV seriously affects the dynamic adaptability and operational reliability of the hydrogen production system based on water electrolysis. By expounding the characteristics of the hydrogen production technology powered by wind-PV complementary systems,and analyzing the mechanism and economy of this technology,an efficient and reliable technical rout of water electrolysis for hydrogen production powered by fluctuating wind power and PV is conceived,to extricate from the predicament in water electrolysis for hydrogen production. There are three key steps in the realization path, system configuration optimization, stable operation and service life extension. Targeting at the system service life management, the safe, reliable and economic operation of the water electrolysis system for hydrogen production powered by PV and wind power lays a favorable foundation for the development of wind-PV-hydrogen industry chain. Table and Figures | Reference | Related Articles | Metrics

Select

Research on carbon sequestration path of steel slag carbonation under carbon neutralization background ZHANG Shufan, CHENG Xingxing, WANG Luyuan, ZHANG Xingyu, WANG Zhiqiang Huadian Technology    2021, 43 (6): 86-91.   DOI: 10.3969/j.issn.1674-1951.2021.06.011 Abstract （394）   HTML （10）    PDF （902KB）（1075）       Knowledge map    Save CO2 capture after combustion is one of the important ways of carbon capture.Carbon sequestration can be achieved by carbonation reaction between alkali metal oxides （CaO-based） in steel slag and CO2.This paper reviews three main methods for carbon sequestration,direct carbon fixation with cold steel slag,indirect carbon fixation with cold steel slag and direct carbon fixation with hot steel slag.After summarizing the methods and pointing out the existing problems,the advantages and disadvantages of the three methods were compared.It is pointed out that the direct carbon fixation with hot steel slag is the most suitable carbon fixation technology with steel slag under the background of carbon peak and carbon neutralization.By realizing carbon sequestration and steel slag waste heat recycling simultaneously,it is one of the most promising carbon fixation technologies. Table and Figures | Reference | Related Articles | Metrics

Select

Energy storage technologies and their applications and development XUE Fu, MA Xiaoming, YOU Yanjun Integrated Intelligent Energy    2023, 45 (9): 48-58.   DOI: 10.3969/j.issn.2097-0706.2023.09.007 Abstract （422）   HTML （22）    PDF （929KB）（975）       Knowledge map    Save Energy storage is a key supportive technology for the energy revolution. In the context of carbon neutrality， the fast-growing energy storage technology is playing an increasingly important role in energy industry. Existing energy storage technologies and their development statuses are expounded， focusing on their characteristics and differences. And the application scenarios and economy of these technologies are comprehensively compared. The key to battery researches is introducing new energy storage materials to solve its non-traditional electrochemical problems. Thermochemical energy storage is suitable for long-term storage due to its low energy consumption in reversible reactions， but attention should be paid to its cyclic dynamic characteristics， modeling and cost control. Pumped energy storage and compressed air storage technology are mature technologies， which are of high storage capacity and suitable for large-scale energy storage projects. However， the two technologies are limited by siting constraints， high cost of infrastructure construction and difference in operation and maintenance costs. Flywheel energy storage technology is suitable for the scenarios in need of frequent start-up and short energy release time， but how to the reduce energy loss in conversion is the challenge. Applications of hydrogen energy is restricted by difficulties in storage and transportation and its low energy conversion efficiency. The study can provide reference for relevant researches and policy formulation. Table and Figures | Reference | Related Articles | Metrics

Select

Development status and application prospect of power side energy storage technology TONG Jialin, HONG Qing, LYU Hongkun, WU Ruikang, YING Guangyao Huadian Technology    2021, 43 (7): 17-23.   DOI: 10.3969/j.issn.1674-1951.2021.07.003 Abstract （377）   HTML （8）    PDF （967KB）（853）       Knowledge map    Save Under the background of carbon neutrality, it is necessary to build a new power system with renewable energy as the main body.Power-side energy techniques receive attention because they are important means of remitting large-scale renewable energy grid-connected pressure.They could smooth generation output of intermittent renewable energy and improve frequency modulation and peak regulation capacity of thermal power generation units.In order to develop power-side energy storage techniques better,development status quo and typical application of existing energy storage techniques are discussed and sorted.The development trend of American and Chinese power-side energy storage techniques is analyzed.The development status quo,typical pilot applications,and performance comparison of major power-side energy storage techniques are introduced.The further prospects of power-side energy storage techniques in China are made. Table and Figures | Reference | Related Articles | Metrics

Select

Improvement of deep peak regulation and comprehensive peak shaving technologies for coal-fired units TONG Jialin, WU Ruikang, MAO Jianbo, LYU Hongkun Integrated Intelligent Energy    2022, 44 (4): 43-50.   DOI: 10.3969/j.issn.2097-0706.2022.04.006 Abstract （114）   HTML （2）    PDF （1177KB）（750）       Knowledge map    Save With the development of the new-energy-oriented power system to pursue carbon peaking and carbon neutrality,low-load operation and participation in deep load regulation has become the ordinary state for coal-fired units.Though there is no constraint on the stable operation of the units running at 40%ECR,the constraints for those units at 30%ECR or a lower load should not be ignored.Many technical approaches and transformation are taken to alleviate the intrinsic constraints of the units,and new peak shaving technologies such as those integrated multi-form energy storage,CCUS and multi-energy coupling regulation are proposed.The results show that efficient technical approaches and transformation can improve the peak load regulating performance of units,and raise the dry-wet state transition point of an ultra-super critical boiler by over 6% rated load.Since it is hard to meet the demand of further peak shaving by exploring the potential in a coal-fired unit,comprehensive peak shaving technologies is feasible and crucial in further peak shaving regulation. Table and Figures | Reference | Related Articles | Metrics

Select

Research progress of CO2 resource utilization based on biological carbon sequestration technology HU Xiaofu, WANG Kailiang, SHEN Jianyong, BAI Yongfeng Huadian Technology    2021, 43 (6): 79-85.   DOI: 10.3969/j.issn.1674-1951.2021.06.010 Abstract （119）   HTML （5）    PDF （1400KB）（735）       Knowledge map    Save Global climate change caused by the accumulation of greenhouse gases has attracted extensive attention.Nowadays,more than 120 nations and regions have proposed the carbon neutrality targets.Biological carbon sequestration technology shows excellent application prospects in CO2 resource utilization because of its mild reaction conditions and product diversity.The principles of photosynthetic carbon fixation and microbial electrochemical carbon fixation were described respectively,and the resource utilization methods of photosynthetic carbon fixation were mainly introduced,such as microalgae carbon fixation to methane,microalgae carbon fixation to biofuel,microalgae wastewater treatment,and other biological carbon fixation and resource utilization methods,The key research directions of CO2 resource utilization technology based on biological carbon sequestration technology in the future are prospected. Table and Figures | Reference | Related Articles | Metrics

Select

Overview on the characteristics,connotation and development status of virtual power plants in China ZHONG Yongjie, JI Ling, LI Jingxia, JIANG Yanjun, WU Shiwei, WANG Zidong Integrated Intelligent Energy    2022, 44 (6): 25-36.   DOI: 10.3969/j.issn.2097-0706.2022.06.003 Abstract （424）   HTML （47）    PDF （3654KB）（660）       Knowledge map    Save To achieve the "30·60" goal,virtual power plants have been taken as an important measure to construct a new power system and complete energy transformation. It is also the development direction for the safe and efficient utilization of new energy. The connotation and overall characteristics of virtual power plants are introduced. And against the backdrop of the status quo in China, the main business segments of a virtual power plant and its political environment are expounded. Given the existing cases home and abroad, the supporting elements including controllable resources,key technologies and market mechanism for the rapid development of virtual power plants are summarized. Then, the problems in the promotion of virtual power plants in China are summarized based on the three development phases. Based on the understanding on the connotation and basic characteristics,it is believed that virtual power plants are promising in integrated application with digitalization,intelligentization,cloud sharing,artificial intelligence,big data,Internet of Things and other technologies. Table and Figures | Reference | Related Articles | Metrics

Select

Classification and characteristic analysis of adjustable resources on the user side ZHENG Qingrong, LU Yingjie, XIANG Jiani, CHEN Yuyang, GONG Feixiang, YUAN Jindou, WU Yingjun Integrated Intelligent Energy    2022, 44 (11): 50-55.   DOI: 10.3969/j.issn.2097-0706.2022.11.007 Abstract （224）   HTML （6）    PDF （933KB）（616）       Knowledge map    Save Since the rapid growth of load has posed a huge challenge to the stability of the power system， supply-side regulation and control capabilities of traditional methods have gradually been weakened. Therefore， demand response， as an important means to alleviate the imbalance between supply and demand during power peak periods， has received increasing attention. Demand response can improve the stability of the grid by scheduling the adjustable loads on demand sides and reducing partial load capacity in peak load periods. Therefore， it is of great significance to study adjustable resources on load sides. Based on the existing researches on user-side load classification， a classification method for user-side resources according to their energy supply and consumption attributes is proposed. By analyzing the typical loads of different energy supply and consumption attributes and their characteristics， a resource library of loads with different attributes has been established， which lays a foundation for in-depth research on demand response. Table and Figures | Reference | Related Articles | Metrics

Select

Research on the development path of new power system to achieve carbon peaking and carbon neutrality ZHANG Jinping, ZHOU Qiang, WANG Dingmei, LI Jin, LIU Lijuan, ZHANG Yanqi, WANG Sheng Huadian Technology    2021, 43 (12): 46-51.   DOI: 10.3969/j.issn.1674-1951.2021.12.007 Abstract （300）   HTML （10）    PDF （1094KB）（608）       Knowledge map    Save Building a clean,low-carbon,safe and efficient modern power system is an important way to energy transformation.To achieve carbon peaking and carbon neutrality,new energy has seen explosive growth and its large-scale grid-connecting have become unstoppable in China.The traditional fossil-based power system is shifting to a power system with high-proportion new energy.Combining the current status and prospects of new energy,the challenges in safe and stable operation,optimized scheduling and energy consumption of the new power system taking renewable energy as the main power source are analyzed.Then,the development paths of the new power system on power side,grid side and supply side are proposed to promote the widespread application of clean energy and achieve carbon peaking and carbon neutrality. Table and Figures | Reference | Related Articles | Metrics

Select

Feasibility analysis on methane production by CO2 hydrogenation in China CHEN Yong, SU Junhua, WANG Yang Integrated Intelligent Energy    2022, 44 (6): 86-90.   DOI: 10.3969/j.issn.2097-0706.2022.06.010 Abstract （241）   HTML （29）    PDF （985KB）（597）       Knowledge map    Save The vigorous implementation of CO2 emission reduction and renewable energy draws forth the market of methane production by CO2 hydrogenation.The technical route of CO2 hydrogenation to CH4 was described from hydrogen sources,CO2 sources,methanation reaction catalysts and reactors,and the application prospect and economy of this technology were analyzed.Storage and transit of renewable energy is an important pillar of integrated energy systems,capturing CO2 by abandoned PV and wind power can facilitate the realization of carbon neutrality.The generated CH4 is a supplement of natural gas in pipelines nearby,which greatly saves the cost of energy storage and transportation and improves energy utilization efficiency.If there is a raise in CO2 trading price and a drop in price of renewable energy,methane production by CO2 hydrogenation will embrace a promising future in China. Table and Figures | Reference | Related Articles | Metrics

Select

Opportunities and challenges faced by energy and power industry with the goal of carbon neutrality and carbon peak YU Xiaobao, ZHENG Dandan, YANG Kang, KONG Jie, ZHANG Tianhao Huadian Technology    2021, 43 (6): 21-32.   DOI: 10.3969/j.issn.1674-1951.2021.06.003 Abstract （470）   HTML （33）    PDF （2699KB）（587）       Knowledge map    Save The goal of carbon neutrality and carbon peak has been upgraded to a national strategy.As an important field of the goal,the follow-up development of power industry plays a vital role in achieving carbon neutrality and carbon peak in China.Based on the definition and development requirements of carbon peak and carbon neutralization,under the current situation of China's energy structure and carbon emissions,there are four main paths to achieve carbon neutrality which include clean and low-carbon power production,application of hydrogen energy,development of carbon capture technology and promotion of the utilization of electricity and hydrogen energy in transportation industry.With the goal of carbon neutrality and carbon peak,energy and power industry faces opportunities and challenges in three aspects,carbon trading market,energy storage and industrial transformation between different industries.Analyzing these challenges provides a reference for the energy and power industry to adapt to the goal of carbon neutrality and carbon peak. Table and Figures | Reference | Related Articles | Metrics

Select

Challenges and countermeasures of traditional thermal power under the goals of carbon neutrality and carbon peaking MA Shuangchen, YANG Pengwei, WANG Fangfang, FAN Shuaijun, ZHAO Guangjin, LI Qi, YUAN Wenxi, LU Rui, QIU Mingjie Integrated Intelligent Energy    2021, 43 (12): 36-45.   DOI: 10.3969/j.issn.1674-1951.2021.12.006 Abstract （389）   HTML （7）    PDF （1627KB）（586）       Knowledge map    Save To achieve the goals of carbon neutrality and carbon peak,there are stern challenges confronted by power industry in its low-carbon transformation. Combing the goals and countermeasures taken by foreign countries and regions,the difficulties faced by traditional thermal power enterprises in renewable energy consumption and old unit decommissioning are analyzed. Combination traditional thermal power plants with energy storage technology can enhance their operation flexibility and stabilize the whole power system. Integrating traditional thermal power with chemical industry, CCUS and other new technologies can build a new thermal power industry chain. The transformation and development of traditional thermal power is related to national energy security and people's livelihood. Thus,in the rapid development of renewable energy, the obstacles of new energy consumption and energy storage should be overcome, and the role of thermal power as safeguard and base load is unignorable. Table and Figures | Reference | Related Articles | Metrics

Select

Analysis on solution for green and low-carbon transformation of thermal power enterprises to achieve carbon peak and carbon neutrality ZHAO Guotao, QIAN Guoming, WANG Sheng, DING Quan, ZHU Haidong Huadian Technology    2021, 43 (10): 11-21.   DOI: 10.3969/j.issn.1674-1951.2021.10.002 Abstract （380）   HTML （2）    PDF （1343KB）（584）       Knowledge map    Save The proposal of carbon peaking and carbon neutrality brings profound changes to the development of energy and power industry, especially on promoting the green and low-carbon transformation of power generation enterprises. Based on the full interpretation of the goals, their impacts on energy industry are analyzed from the perspectives of energy structure adjustment, energy supply, energy consumption, energy informatization and emerging energy technologies. Then, according to the problems existing in the production and operation of thermal power enterprises, the strategies and methods to deal with green and low-carbon transformation are put forward,which include enterprise positioning, renewable energy consumption, energy saving, cost control and enterprise digital transformation, so as to provide reference and ideas for the transformation and development of thermal power enterprises in the future. Table and Figures | Reference | Related Articles | Metrics

Select

Optimal configuration for energy storage system capacity of wind-solar-storage microgrid ZHOU Chengwei, LI Peng, YU Bin, YU Tianyang, MENG Wei Integrated Intelligent Energy    2022, 44 (12): 56-61.   DOI: 10.3969/j.issn.2097-0706.2022.12.008 Abstract （262）   HTML （10）    PDF （985KB）（582）       Knowledge map    Save Due to the intermittent and fluctuating characteristics of distributed energies such as solar energy and wind energy， energy storage technology is taken to effectively reduce their output fluctuations and improve their controllability. Based on the analysis on the characteristics of a wind-solar-storage microgrid's output， an optimal capacity allocation model taking the minimum total investment cost， lowest annual load power shortage rate and optimal wind and solar energy abandonment rate of the microgrid system as the optimization objectives is established. The model's optimal capacity allocation schemes under different constraints and operation strategies are obtained by non-dominated sequencing genetic algorithm （NSGA）. The results show that the wind-solar-storage microgrid system optimized by the optimal energy storage capacity allocation scheme and NSGA is of a lower total investment cost， and higher power-supply reliability and energy utilization rate. Table and Figures | Reference | Related Articles | Metrics

Select

Review and prospect of underground thermal energy storage technology ZHANG Yuanyuan, YE Cantao, GONG Yulie, MA Jiuchen, HUANG Yonghui, ZHAO Jun, PANG Zhonghe Huadian Technology    2021, 43 (11): 49-57.   DOI: 10.3969/j.issn.1674-1951.2021.11.006 Abstract （234）   HTML （2）    PDF （1855KB）（580）       Knowledge map    Save In order to mitigate global warming,achieve "emission peaking and carbon neutrality" and utilize new energy resources efficiently,the power system taking new energy as the main part and power storage industry have to develop in coordination.As one of the key technologies for the joint development,the seasonal underground thermal energy storage,especially Aquifer Thermal Energy Storage（ATES）,is difficult to be transformed from theory to engineering cases.Summarizing the methods and principles of underground thermal energy storage,the theoretical research progress of ATES system in numerical simulation and testing are analyzed.Then,the key technologies and bottlenecks in practical engineering cases are deeply analyzed.The evaluation standards for thermal performance,economic and environmental benefit of ATES systems are compared.On this basis,the prospect of the new power system coupled with ATES technology is made,which can provide reference for the following researches. Table and Figures | Reference | Related Articles | Metrics

Select

Swarm intelligence collaborative control and optimization technology of Energy Internet QIN Yufei, GE Leijiao, WANG Bo Huadian Technology    2021, 43 (9): 1-13.   DOI: 10.3969/j.issn.1674-1951.2021.09.001 Abstract （294）   HTML （13）    PDF （1270KB）（578）       Knowledge map    Save Energy Internet, the integrator of generation, network, load and storage, is a key technology for realizing energy revolution in China. In order to promote the coordinated development of multiple energy sources for Energy Internet, and boost the efficient use of energy, a swarm intelligent collaborative control and optimization technology for Energy Internet is conceived, integrated and designed. Focusing on the efficient operation of Energy Internet, the swarm intelligence collaborative control and optimization technology has taking three aspects into consideration, group intelligence model construction technology for optimizing the operation of Energy Internet, Energy Internet operation optimization technology based on swarm intelligence and Energy Internet distributed cooperative control technology based on multi-agent. This technology will be applied in the Energy Internet platform of Lankao County, Henan Province, which can make the data from the whole county area, in all categories and from all links in the chain visible and measurable. It provides theoretical basis and engineering reference for optimizing the operation of Energy Internet. Table and Figures | Reference | Related Articles | Metrics

Select

Control and utilization of coal mine gas to achieve carbon peaking and carbon neutrality HU Xiaolan, SONG Wei, PENG Chuansheng, LI Bo, JIANG Lihong, XIAO Zhaohui, HONG Keyan Huadian Technology    2021, 43 (12): 52-59.   DOI: 10.3969/j.issn.1674-1951.2021.12.008 Abstract （232）   HTML （7）    PDF （959KB）（574）       Knowledge map    Save In view of the threats to the personal safety, increasing in coal-mining cost and harm to our environment caused by coal mine gas,redesigning the controlling and utilization measurements for coal mine gas on the path to realize carbon peaking and carbon neutrality can boost the production safely and efficiently and advance the transformation of coal industry.Base on literature research and cases study,the current measurements were found to include pre-drainage in planning areas,mechanical ventilation and gas drainage for the working face in production areas and mechanical extraction in the goaf.There are no general standard for the evaluation of the control effects or a unified development plan for coal mine gas.Coal mining enterprises lack the motivation for low-carbon control of coal mine gas,since their understanding on the comprehensive benefits brought by enhancing coal mine gas controlling is insufficient and their treatment technologies are underdeveloped.This situation is inconsistent with the requirements of the national strategic goals of carbon peaking and carbon neutrality.It is suggested that the coal mining enterprises should deploy a coal mine gas control and utilization strategy which conforms to the goals of carbon peaking and carbon neutrality,construct a digital information platform for coal mine gas control and utilization,implement technological innovation and talent introduction strategies, and design the purification and utilization process for the extracted methane in advanced,so as to formulate a new methane control mode including carbon emission reduction from the source,process control,divisional implement,terminal control and market development. Table and Figures | Reference | Related Articles | Metrics

Select

Review on the stability of nanofluids XIONG Yaxuan, SONG Chaoyu, YAO Chenhua, WANG Huihui, WANG Huixiang, HU Ziliang, WU Yuting, DING Yulong Huadian Technology    2021, 43 (7): 68-74.   DOI: 10.3969/j.issn.1674-1951.2021.07.011 Abstract （144）   HTML （4）    PDF （924KB）（562）       Knowledge map    Save To achieve the goal of carbon neutralization and carbon peak,energy conversion efficiency needs to be improved.Nanofluids,as efficient heat transfer mediums,have attracted extensive attention in recent 20 years.However,the poor stability of nanofluids limit their applications in many fields.To improve the stability and promote the large-scale application of nanofluids,by summarizing the related literature,a method which can control the ion concentrations at their proper values by adjusting nanofluid' pH value is proposed.Surfactants can improve the repulsion between nanoparticles.Nanoparticle clusters can be decomposed by ultrasonic technique.The intermolecular forces between mixed nanoparticles can be utilized to improve nanofluids' stability.These methods help to solve the problem of low stability of nanofluids in long-term applications. Table and Figures | Reference | Related Articles | Metrics