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Design and engineering implementation of non-supplementary fired compressed air energy storage system: TICC-500

Science China(Technological Sciences) 2015年第4期58卷 600-611页

作者： MEI Sheng Wei WANG Jun Jie TIAN Fang CHEN Lai Jun XUE Xiao Dai LU Qiang ZHOU Yuan ZHOU Xiao Xin State Key Laboratory of Control and Simulation of power Systems and Generation equipment Department of Electrical EngineeringTsinghua University Key Laboratory of Cryogenics Technical Institute of Physics and Chemistry Chinese Academy of Sciences department of power Systems China Electric Power Research Institute

The integration and accommodation of the wind and solar energy pose great challenges on today’s power system operation due to the intermittent nature and volatility of the wind and solar *** efficient large-scale electrical energy storage is one of the most effective and economical solutions to those *** the comprehensive review of the existing storage technologies,this paper proposes an overall design scheme for the Non-supplementary Fired Compressed Air Energy Storage(NFCAES)system,including system design,modeling and efficiency assessment,as well as protection and ***,the design principles of the multistage regenerative,*** recovery system which is used to fully recycle and utilize the waste heat from compression are provided,so as the overall system efficiency evaluation *** paper theoretically ascertains the storage decoupling rules in the potential and internal energy of molecular compressed air and reveals the conversion mechanism of gas,heat,power,electricity and other forms of *** this basis,a 500-k W physical simulation system of CAES system(TICC-500,Tsinghua-IPCCAS-CEPRI-CAES)is built,which passed a system-wide 420-k W load power generation test with less pollution and zero carbon ***,the multi-form energy conversion of multi-stage regenerative CAES and storage efficiency is verified,especially its incomparable superiority in solving the uncertainty problem in wind and solar power ***,the propaganda and application scenario of the CAES system in China is introduced.

关键词： index terms-compressed air energy storage non-supplementary fired regenerative/heat recovery multi-stage expansion TICC-500

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Operational Reliability Modeling and Assessment of Battery Energy Storage Based on Lithium-ion Battery Lifetime Degradation

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Journal of Modern power Systems and Clean Energy 2022年第6期10卷 1738-1749页

作者： Lin Cheng Yuxiang Wan Yanglin Zhou David Wenzhong Gao State Key Laboratory of Control and Simulation of power System and Generation equipment Department of Electrical EngineeringTsinghua UniversityBeijingChina department of Electrical and Computer Engineering University of DenverDenverUSA IEEE

Battery energy storage(BES)systems can effectively meet the diversified needs of power system dispatching and assist in renewable energy *** reliability of energy storage is essential to ensure the operational safety of the power ***,BES systems are composed of battery *** suggests that BES performance depends not only on the configuration but also on the operating state over different lifetime *** lack of safety and reliability is the main bottleneck preventing widespread applications of BES ***,a reliability assessment algorithm and a weak-link analytical method for BES systems are proposed while considering battery lifetime ***,a novel lithium-ion battery model is proposed to identify the degradation rate of solid electrolyte interphase film formation and capacity *** impacts of different operating conditions are considered in stress factor ***,a reliability assessment algorithm for a BES system is introduced based on a universal generating *** innovative weak-link analytical method based on the reliability importance index is proposed that combines the evaluation results of state-oriented and state-change-oriented indexes through an entropy weight *** model,algorithm,indexes,and the usefulness are demonstrated in case studies based on aging test data and actual bus operating *** results demonstrate the effects of the battery status and working conditions on BES ***-link analysis is also used to assist BES systems in avoiding short-board batteries to achieve long lifetimes and efficient operation.

关键词： Battery energy storage lifetime degradation operational reliability capacity plummeting weak-link analysis

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Influence of thermal ageing on high-field polarisation characteristics and conductivity behaviour of submarine polymeric cables insulation

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High Voltage 2023年第1期8卷 138-148页

作者： Xize Dai Jian Hao Gian Carlo Montanari Zheng Jian Ruijin Liao Xinlong Zheng State Key Laboratory of power Transmission equipment&System Security and New Technology Chongqing UniversityChongqingChina department of Energy Aalborg UniversityAalborgDenmark Center for Advanced power Systems Florida State UniversityTallahasseeFloridaUSA Shinan power Supply Branch Company of State Grid Chongqing Electric power Company NananChina Zhoushan power Supply Branch Company of State Grid Zhejiang Electric power Company ZhoushanChina

Diagnosing insulation intrinsic ageing is essential for preventing insulation failure of submarine cables,and in case of failure,helping in any decision about maintenance *** this study,a novel aged cable diagnosis approach based on high-voltage frequency domain spectroscopy(HV-FDS)with broader frequency width is proposed to analyse the high-field polarisation characteristics and conductivity behaviour of 500 kV submarine polymeric cables insulation,aiming to support the evaluation of overall insulation *** measurement principle of HV-FDS and relaxation mechanism are stated,and then focus is on studying the extent of change of polarisation and conduction properties of submarine cables insulation as a function of ageing stress and ***,the high-field polarisation characteristics and conductivity behaviour are discussed in-depth based on the carrier transport and trap ***,the novel diagnostic indicator based on the high-field characteristics is extracted to quantify the thermal ageing state of submarine cables *** show that the high-field polarisation characteristics and conductivity behaviour seem to become sensitive diagnostic quantities if measured at reasonably high voltage,which are able to reveal mechanisms associated with thermo-oxidative ageing as that generated in the testing procedure considered in this *** is considerably higher than that experienced in typical dielectric spectroscopy approaches.

关键词： behaviour insulation characteristics

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A New Method for the Aging evaluation of Oil-Paper Insulation Using η-Butanol and Methanol

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CSEE Journal of power and Energy Systems 2024年第2期10卷 717-726页

作者： Jianyi Wang Yuanxiang Zhou Jun Liu Zhaowei Wang Song Bai Jiayu Lu department of High Voltage China Electric Power Research InstituteBeijing 100192China State Key Laboratory of power Grid Environmental Protection Beijing 100192China Electrical Engineering department Tsinghua UniversityBeijing 100084China Solar Storage Division of State Key Lab of power System and Generation equipment School of Electrical EngineeringXinjiang UniversityUrumqi 830047China State Grid Wuwei Electric power Supply Company Wuwei 733000China

To improve the accuracy and efficiency of the aging life prediction and assessment of transformer oil-paper insulation,and to make up for the deficiencies of traditional characterizers,such as 2-furfural,carbon monoxide,and carbon dioxide,a method for the simultaneous determination of methanol,ethanol,n−propanol,and η-butanol in oil with a single injection is established by headspace-gas chromatography-mass *** measured results show that the determination limits of the four alcohol characterizers can be controlled to 10μg/kg *** on this method,the change patterns of the above four alcohols with thermal aging time and degree of polymerization are obtained through thermal aging experimental ***,η-propanol,and η-butanol in oil indicate nearly linear correlations with thermal aging time and degree of polymerization,similar to that of *** analyzing 52 sets of measured data of 500 kV EHV transformers in operation,η-butanol is found to have excellent performance,and a new method to evaluate the aging state of oil-paper insulation employing η-butanol and methanol is proposed along with the aging attention value *** measured data of 500 kV EHV transformers in operation indicate that the combination of η-butanol and methanol as the preferred characterizers can effectively compensate for the shortcoming of traditional characterizers in the early stages of aging,and the feasibility of the method is *** possible pathways for the generation of η-butanol by cellulose cleavage during the aging of oil-paper are proposed from the chemical structure of cellulose.

关键词： Aging characterization determination method methanol η-butanol oil-paper insulation 500 kV transformers

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Audible noise evaluation for six-phase overhead lines transformed from existing three-phase double circuit infrastructures with uprated voltages

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High Voltage 2022年第5期7卷 866-876页

作者： Qi Li Yanzhou Li Simon Rowland Jianlin Hu Ian Cotton Xingliang Jiang State Key Laboratory of power Transmission equipment&System Security and New Technology Electrical Engineering SchoolChongqing UniversityChongqingChina department of Electrical and Electronic Engineering The University of ManchesterManchesterUK

The drive to reduce carbon emissions and meet climate change targets set by governments worldwide has led to the growth of renewable energy sources and electric vehicles in recent *** intermittent generation and centralised demand require increased transmission capacities when operating associated power *** transmission lines are not capable of meeting planned *** many countries,obtaining a new right of way to build an overhead line(OHL)is increasingly *** is therefore an urgent need to study techniques for transmission line *** increasing voltages is not feasible because elevated surface potential gradient at conductor surfaces increases audible noise(AN)levels *** feasibility of high phase order,especially six-phase,transmission techniques has been previously demonstrated,and it has been proved to be an effective way to uprate existing three-phase double circuit OHLs with increased *** study analyses two typical overhead line structures,whose conductor surface potential gradient and AN level are *** average and maximum surface potential gradient of the six-phase OHL are 18.5%and 18.6%lower than that of the three-phase *** AN of the six-phase single circuit OHL is predicted to be 6.33 and 6.45 dBA lower than that of the three-phase double circuit OHL after the voltage is increased by 45%and 50%for the lines *** is shown that six-phase OHLs can increase capacity by allowing elevating phase voltages without increasing acoustic noise levels.

关键词： phase double transformed

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Dielectric and thermal properties characterisation and evaluation of novel epoxy materials for high-voltage power module packaging

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High Voltage 2024年第5期9卷 1021-1032页

作者： Zhengdong Wang Ganqiu Yang Xiaolong Cao Mengli Li Tong Zhang Chenxin Liu Yuanhang Zhou Yonghong Cheng School of Mechanical and Electrical Engineering Xi'an University of Architecture and TechnologyXi'anChina State Key Laboratory of Electrical Insulation and power equipment Xi'an Jiaotong UniversityXi'anChina

Internal insulation of high-voltage power modules is facing interesting failure risks,including high temperature overheating,breakdown fault,material cracking etc.,so it is imperative to urgently develop new dielectric materials with high thermal conductivity(λ),outstanding electrical insulation,and thermal stability properties.A method to construct controllable liquid crystalline cross-linking networks based on the synthesis of biphenyl epoxy monomer and the change of curing agent structures and curing temperature is *** uniform nematic rod-like liquid crystalline domains were obtained by using 4,4-diaminodiphenylmethane as a curing agent under a pre-curing temperature of 105°*** resulting film(abbreviated as TD-105)exhibitedλup to 0.53 W m^(-1) K^(-1) and a dielectric breakdown strength of 57.69 kV mm^(-1),which showed a simultaneous enhancement of 178%and 16%,respectively,compared to traditional bisphenol A epoxy ***,it also exhibited lower dielectric loss and magnitude of partial discharge while having higher glass-transition temperature(190°C).A novel idea for the development of high-performance epoxy insulating materials for the application of high-voltage and large-power electrical equipment is provided.

关键词： thermal dielectric curing

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An inversion decomposition method for better energy resolution of NaI(Tl)scintillation detectors based on a Gaussian response matrix

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Nuclear Science and Techniques 2016年第3期27卷 58-67页

作者： Jian-Feng He Yao-Zong Yang Jin-Hui Qu Qi-Fan Wu Hai-Ling Xiao Cong-Cong Yu Fundamental Science on Radioactive Geology and Exploration Technology Laboratory East China Institute of TechnologyNanchang 330013China department of Engineering Physics Tsinghua UniversityBeijing 100084China Jiujiang power Supply Subsidiary Company of State Grid Jianxi Electronic power Company Jiujiang 332000China Sichuan Integrative Medicine Hospital Sub-health Testing and evaluation Laboratory Chengdu 610041China

NaI(T1) scintillation detectors have been widely applied for gamma-ray spectrum measurements owing to advantages such as high detection efficiency and low ***,the mitigation of the limited energy resolution of these detectors,which detracts from an accurate analysis of the instrument spectra obtained,remains a crucial *** on the physical properties and spectrum formation processes of NaI(T1) scintillation detectors,the detector response to gamma photons with different energies is represented by photopeaks that are approximately Gaussian in shape with unique full-width-at-half-maximum(FWHM) *** FWHM is established as a detector parameter based on resolution calibrations and is used in the construction of a general Gaussian response matrix,which is employed for the inverse decomposition of gamma spectra obtained from the *** Gold and Boosted Gold iterative algorithms are employed to accelerate the decomposition of the measured *** of the inverse decomposition method on multiple simulated overlapping peaks and on experimentally obtained U and Th radionuclide series spectra verify the practicability of the method,particularly in the low-energy region of the spectrum,providing for the accurate qualitative and quantitative analysis of radionuclides.

关键词：闪烁探测器能量分辨率响应矩阵分解方法 NaI 高斯放射性核素反演

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Energetics characteristics accounting for the low-level wind’s rapid enhancement associated with an extreme explosive extratropical cyclone over the western North Pacific Ocean

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Atmospheric and Oceanic Science Letters 2020年第5期13卷 426-435页

作者： JIN Shuanglong FENG Shuanglei SHEN Wei FU Shenming JIANG Lizhi SUN Jianhua State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research InstituteBeijingChina power equipment status evaluation department Electric Power Research Institute of the State Grid Shaanxi Electric Power CompanyXi’anChina International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Laboratory of Cloud–Precipitation Physics and Severe Storms Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina

During mid-January 2011,a rarely seen twin-extratropical-cyclone event appeared over the western North Pacific *** of the twin cyclones developed into an extreme explosive extratropical cyclone(EEC),which was comparable to the intensity of a *** and divergent wind kinetic energy(KE)analyses were applied to understand the low-level wind’s rapid enhancement associated with the *** was found that:(i)the total wind KE associated with the EEC showed a remarkable enhancement in the lower troposphere during the cyclone’s maximum development stage,with the maximum/minimum wind acceleration appearing in the southeastern/northwestern quadrant of the EEC;(ii)the rotational wind KE experienced an obvious increase,which corresponded to the total wind KE enhancement,whereas the divergent wind KE,which was much smaller than the rotational wind,mainly featured a decreasing trend;(iii)the rotational wind KE enhancement showed variational features consistent with the horizontal enlargement and upward stretching of the EEC;(iv)the nonorthogonal wind KE enhanced the total wind KE in regions with strong rotational wind,which resulted in the maximum lower-tropospheric maximum wind,whereas in regions with strong divergent wind it mainly reduced the total wind KE;(v)the northward transport of total wind KE and the rotational wind KE production due to the work done by pressure gradient force were dominant factors for the enhancement of winds associated with the EEC,particularly in its southeastern *** contrast,an overall conversion from rotational wind KE to divergent wind KE decelerated the rotational wind enhancement.

关键词： Explosive extratropical cyclone rotational wind divergent wind kinetic energy twin cyclones

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Electrical System Planning of Large-scale Offshore Wind Farm Based on N+ Design Considering Optimization of Upper power Limits of Wind Turbines

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Journal of Modern power Systems and Clean Energy 2023年第6期11卷 1784-1794页

作者： Shurong Wei Hao Wang Yang Fu Fangxing Li Lingling Huang IEEE department of Electrical power Engineering Shanghai University of Electric PowerShanghai 200090China department of Electrical Engineering and Computer Science The University of TennesseeKnoxvilleTN 37996USA

Electrical system planning of the large-scale offshore wind farm is usually based on N-1 security for equipment lectotype. However, in this method, owing to the aggregation effect in large-scale offshore wind farms, offshore electrical equipment operates under low load for long periods, thus wasting resources. In this paper, we propose a method for electrical system planning of the large-scale offshore wind farm based on the N+ design. A planning model based on the power-limited operation of wind turbines under the N+ design is constructed, and a solution is derived with the optimization of the upper power limits of wind turbines. A comprehensive evaluation and game analysis of the economy, risk of wind abandonment, and environmental sustainability of the planned offshore electrical systems have been conducted. Moreover, the planning of an infield collector system, substation, and transmission system of an offshore electrical system based on the N+ design is integrated. For a domestic offshore wind farm, evaluation results show that the proposed planning method can improve the efficiency of wind energy utilization while greatly reducing the investment cost of the electrical system.

关键词： Electrical system N+design offshore wind farm planning optimization

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Reliability evaluation and Improvement of Islanded Microgrid Considering Operation Failures of power Electronic equipment

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Journal of Modern power Systems and Clean Energy 2020年第1期8卷 111-123页

作者： Wen Zhong Lingfeng Wang Zhaoxi Liu Shiying Hou State Key Laboratory of power Transmission equipment&System Security and New Technology College of Electrical EngineeringChongqing UniversityChongqingChina Laboratory of Trustworthy Cyber-Physical Systems and Infrastructures Department of Electrical Engineering and Computer ScienceUniversity of Wisconsin-MilwaukeeMilwaukeeUSA

With the high integration of power electronic technologies in microgrids,the reliability assessment considering power electronic devices has become a hot ***,so far no research has considered the impact of the operation failure probability of power electronic equipment on the overall reliability of the *** paper aims to construct a holistic operation failure rate model of power electronic systems based on the overall reliability assessment of islanded microgrid with high penetration of renewable energy sources(RESs).In addition,to improve the reliability of islanded microgrid,the conventional battery energy storage system(BESS)is replaced by the hybrid energy storage system(HESS).Based on the proposed model,the operation failure models for the power electronic modules in microgrid are built and tested,and then the sensitivity analysis is performed for exploring the influence of various factors on the reliability of the microgrid.

关键词： Reliability assessment reliability improvement operation failure rate power electronics islanded microgrid

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