检索结果-南通市图书馆

Research on power-supply cost of regional Power system under carbon-peak target

在线全文

学校读者我要写书评

暂无评论

Global Energy Interconnection 2022年第1期5卷 31-43页

作者： Jingyi Wang Min Cang Xiaomeng Zhai Shuang Wu Xi Cheng Lei Zhu State Grid Jiangsu Economic Research Institute Nanjing 210008JiangsuP.R.China China Electricity Council Technical and Economic Consulting Centre of Electric power Construction Beijing 100053P.R.China

With the establishment of the carbon-peak target by 2030,the direction of carbon emission reduction in China’s energy system has been further clarified.As the industry with the largest proportion of carbon emissions in China,the lowcarbon transformation of the electric power industry is critical to realize the carbon-peak target.Current research mostly focuses on technical analysis or system cost accounting of the carbon-peak realization path at the national level.There is a lack of targeted research on regional Power systems with complex inter-regional power flow exchange and limited energy resource development.Simultaneously,the calculation of the system cost lacks the perspective of the life cycle and ignores the inertia of the stock and change inertia of incremental disturbance.From the perspective of the life cycle,this study proposes a calculation model of power supply cost for regional Power systems according to the carbon-peak target,analyzes the realization path of the carbon target from an economic perspective,and provides references for the path selection and policy formulation of system transformation.

关键词： Carbon peak Power system Renewable energy sources system cost Life cycle

Optimal and Robust Power system Stabilizers in a Multi Machine system

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第11期73卷 4139-4156页

作者： Mehrdad Ahmadi Kamarposhti Hassan Shokouhandeh Ilhami Colak Kei Eguchi Department of Electrical Engineering Jouybar BranchIslamic Azad UniversityJouybarIran Department of Electrical Engineering Semnan UniversitySemnanIran Department of Electrical and Electronics Engineering Faculty of Engineering and ArchitecturesNisantasi UniversityIstanbulTurkey Department of Information Electronics Fukuoka Institute of TechnologyFukuokaJapan

One method for eliminating oscillations in Power systems is using stabilizers.By applying an appropriate control signal in the excitation system of a generator,a Power system stabilizer improves the dynamic stability of Power systems.However,the issue that is of high importance is the correct design of these stabilizers.These stabilizers must be designed to have proper performance when operating conditions change.When designed incorrectly,not only they do not improve the stability margin,but also increase the oscillations.In this paper,the robust design of Power system stabilizers on a four-machine Power system has been performed.For this purpose,the differential evolution algorithm has been used.The studies have been repeated as three scenarios by producing different loading conditions for the generators.The performances of the conventional stabilizer and the optimized one have been compared.Simulation results indicate that the designed robust stabilizer outperforms other stabilizers in different conditions and has damped the interarea and intra-area oscillation modes in the shortest time with minimum amplitude.

关键词： Power system dynamic stability Power system stabilizers robust design evolution algorithm

Toward carbon neutrality:Uncovering constraints on critical minerals in the Chinese Power system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Fundamental Research 2022年第3期2卷 367-374页

作者： Wendong Wei Zewen Ge Yong Geng Mingkun Jiang Zhujun Chen Wei Wu School of International and Public Affairs Shanghai Jiao Tong UniversityShanghai 200030China SJTU-UNIDO Joint Institute of Inclusive and Sustainable Industrial Development Shanghai Jiao Tong UniversityShanghai 200030China China Institute for Urban Governance Shanghai Jiao Tong UniversityShanghai 200030China China-UK Low Carbon College Shanghai Jiao Tong UniversityShanghai 201306China Key Laboratory of Pressure systems and Safety(MOE) School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China Business School University of Shanghai for Science and TechnologyShanghai 200093China Shanghai Climate Center Shanghai 200030China

China has set up its ambitious carbon neutrality target,which mainly relies on significant energy-related carbon emissions reduction.As the largest important contributing sector,power sector must achieve energy transition,in which critical minerals will play an essential role.However,the potential supply and demand for these minerals are uncertain.This study aims to predict the cumulative demand for critical minerals in the power sector under different scenarios via dynamic material flow analysis(DMFA),including total demands,supplies and production capacities of different minerals.Then,these critical minerals are categorized into superior and scarce resources for further analysis so that more detailed results can be obtained.Results present that the total minerals supply will not meet the total minerals demand(74260 kt)in 2060.Serious resource shortages will occur for several key minerals,such as Cr,Cu,Mn,Ag,Te,Ga,and Co.In addition,the demand for renewable energy will be nearly fifty times higher than that of fossil fuels energy,implying more diversified demands for various minerals.Finally,several policy recommendations are proposed to help improve the overall resource efficiency,such as strategic reserves,material substitutions,and circular economy.

关键词： Carbon neutrality Critical mineral Mismatch gap Power system Circular economy

Physics-guided Deep Learning for Power system State Estimation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Power systems and Clean Energy 2020年第4期8卷 607-615页

作者： Lei Wang Qun Zhou Shuangshuang Jin Department of Electrical and Computer Engineering University of Central FloridaOrlandoFL 32816USA School of Computing Clemson UniversityNorth CharlestonSC 29405USA

In the past decade,dramatic progress has been made in the field of machine learning.This paper explores the possibility of applying deep learning in Power system state estimation.Traditionally,physics-based models are used including weighted least square(WLS)or weighted least absolute value(WLAV).These models typically consider a single snapshot of the system without capturing temporal correlations of system states.In this paper,a physics-guided deep learning(PGDL)method is proposed.Specifically,inspired by autoencoders,deep neural networks(DNNs)are used to learn the temporal correlations.The estimated system states from DNNs are then checked against physics laws by running through a set of power flow equations.Hence,the proposed PGDL is both data-driven and physics-guided.The accuracy and robustness of the proposed PGDL method are compared with traditional methods in standard IEEE cases.Simulations show promising results and the applicability is further discussed.

关键词： State estimation deep learning deep neural network(DNN) temporal correlation Power system

Regional Power system transitions towards carbon neutrality:The case of North China

在线全文

学校读者我要写书评

暂无评论

Economic and Political Studies 2022年第4期10卷 416-441页

作者： Ying Fan Zhuang Liang Xing Yao School of Economics and Management and Lab for Low-carbon Intelligent Governance(LLIG)Beihang UniversityBeijingChina

China has announced its goal of reaching carbon neutrality by 2060,which will have a profound impact on its energy and economic systems.During this process,the power sector will play a key role in helping the country on its road towards carbon neutrality.This study develops a multi-regional power dispatch and capacity expansion model to combine long-term capacity expansion with short-term power dispatch.The model is built to optimise the carbon-neutral transition pathway from the perspective of economics,focussing on Power system stability and reliability under high penetrations of renewables.Using the case study of North China,the cost-effective methods for Power system transitions under the targets of reaching peak emissions by 2030 and achieving carbon neutrality by 2060 are discussed under different scenarios.We find that the future power supply system will rely heavily on renewable energy which will account for more than 89%of power generation.Inner Mongolia will produce more than 84%of power in the North China region.The inter-regional power transmission capacity will be five times higher than its current level.Policy choices will lead to different transition pathways as the early-stage installation decisions will have a lock-in effect on the following carbon emission reduction strategies and determine the importance of technologies adopted in achieving carbon neutrality.Although the transition to a low-carbon economy will result in an increase in cost by 17–19%,it will bring huge climate benefits to the world.

关键词： Carbon neutrality Power system carbon emissions renewable power North China

The Impacts and Adaptation of Climate Extremes on the Power system:Insights from the Texas power Outage Caused by Extreme Cold Wave

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Urban and Environmental Studies 2022年第1期10卷 61-76页

作者： MA Zhiyuan ZHAO Zijian LIU Changyi YANG Fang WANG Mou Global Energy Interconnection Development and Cooperation Organization (GEIDCO) Research Centre for Sustainable Development Chinese Academy of Social Sciences University of Chinese Academy of Social Sciences Research Institute for Eco-civilization Chinese Academy of Social Sciences

Along with the aggravation of climate change, various weather and climate extreme events(abbreviated as climate extremes) are becoming more frequent. During the transition to the use of clean energy, the Power system will show increasingly prominent features such as high ratio of clean energy, high ratio of electrification, and a high proportion of electric and electronic equipment, coupled with summer and winter load peaks. Against this backdrop, this paper studies the impacts of climate extremes on the Power system using the Texas power outage as an example,and proposes general adaptation measures to cope with climate extremes. For a start, this paper reviews the power outage in Texas caused by an extreme cold wave across the North America in 2021, and conducts an in-depth analysis of its causes. Then, based on the theoretical framework of disaster risk management, this paper analyzes the weather and climate disaster risks, extreme events, exposure, and vulnerability faced by the Power system in the context of climate change and extreme events. Finally, in order to build a new Power system, this paper establishes an overall framework for the Power system to mitigate and adapt to climate change, and summarizes the key techniques involved in power generation, transmission, distribution, and consumption, as well as key technologies in the fields of power supply, power grid, power load, and energy storage, and the strategies and measures for addressing climate change.

关键词： Weather and climate extremes climate change Power system mitigation adaptation

Research on the Low-order Control Strategy of the Power system With Time Delay

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2018年第2期5卷 501-508页

作者： Xinyi Yu Xuejinfeng Hong Jun Qi Linlin Ou Yanlin He Department of Automation Zhejiang University of Technology

In this paper, the design problem of the low-order controller is considered for the Power system with a fixed time delay. A linear model of the Power system with time delay is firstly established. Then the proportional-integral-differential(PID) controller, which is the typical low-order controller, is designed to improve the stability of the Power system. The stabilizing region of the PID controller is obtained. The control parameters chosen arbitrarily in the resultant region can ensure the stability of the Power system. Finally, based on the stabilizing result, the PID controller satisfying the H∞performance index is designed, which improves the robustness of the whole Power system. The main advantage of the proposed method lies in that there is no need to approximate the model of the Power system.The method can be further extended to the Power system which is more complex.

关键词： Power system proportional-integral-differential(PID) controller stability time delay

Advancements in compressed air engine technology and Power system integration: A comprehensive review

在线全文

学校读者我要写书评

暂无评论

Energy Reviews

Energy Reviews 2023年第4期2卷 49-62页

作者： Haifei Tian Hualiang Zhang Zhao Yin Yu Liu Xinjing Zhang Yujie Xu Haisheng Chen Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing100190China Nanjing Institute of Future Energy system Institute of Engineering ThermophysicsChinese Academy of SciencesNanjing211135China University of Chinese Academy of Sciences Beijing100049China

The compressed air Power system demonstrates the ability to convert the internal energy stored within com-pressed air into mechanical energy,thus facilitating power output.Its application within specific domains,such as special purpose vehicles,standby power sources,and fire and explosion prevention,holds significant research and practical value owing to its combustion-free operation,zero pollution and emissions.This paper aims to explain the operational principles and unique features of the compressed air engine(CAE).The reasons for selecting volume-type expanders as CAE components are detailed,including an analysis of their technical characteristics and research developments.Building on this foundation,the paper explores the operational characteristics and research status of traditional compressed air Power systems installed in vehicles,with a particular focus on their limited range and excessive cold temperature.Furthermore,the study presents a comprehensive summary of the research progress made in the last few years relating to hybrid Power systems that derive from conventional compressed air Power systems.Finally,the paper concludes by outlining the expected development trajectory of CAEs and compressed air Power systems.

关键词： Compressed air Engine Hybrid Power system Vehicle

Role of CCUS in carbon neutral Power system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

碳中和(英文)

碳中和(英文) 2022年第1期1卷 377-388页

作者： Yawen Zheng Lin Gao Rui Dong Song He Laboratory of Integrated Energy system and Renewable Energy Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China North China Electric power University Beijing 100096China

Achieving carbon neutrality by 2060 is an ambitious goal to promote the green transition of economy and society in China.Highly relying on coal and contributing nearly half of CO_(2) emission,power industry is the key area for reaching carbon-neutral goal.On basis of carbon balance,a criterial equation of carbon neutral for Power system is provided.By means of the equation,the different effects of three technical approaches to achieve carbon neutrality,including energy efficiency improvement,shifting energy structure and CO_(2) capture,utilization and storage(CCUS)technology,had been evaluated.The results indicate that building a carbon-neutral Power system requires comprehensive coordination between energy efficiency,renewable energy and CCUS technology.In particular,the unique role of CCUS in achieving carbon neutral target was investigated.For any Power systems with fossil energy input,CCUS and negative emission technologies is indispensable to reach carbon neutrality.However,rather high energy consumption and costs is the critical gas deterring the large scale deployment of CCUS.Considering the specific conditions of China’s power industry,before the time window between 2030 and 2040 being closed,CCUS would either be ready for large scale deployment by reducing energy consumption and costs,or be phased out along with the most coal power plants.Conclusively,carbon neutral scenario will give CCUS the last chance to decarbonize the fossil fuel,which has great significance for China.

关键词： Carbon neutrality CCUS Power system Carbon emission intensity