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Research on Energy Mutual Assistance Control Strategy between Low-Voltage Stations Using Micro-Pumped Storage System with Common Reservoir mode

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Energy Engineering 2025年第3期122卷 1093-1112页

作者： Yunzhao Wu Guanglin Sha Qing Duan Xinwei Cong Lu Liu Ning Zhou Yingjie Zhou Power Distribution Department China Electric Power Research InstituteBeijing100192China Electric Power Research Institute State Grid Henan Electric Power Co.Ltd.Zhengzhou450052China School of Electrical and Control Engineering North China University of TechnologyShijingshan DistrictBeijing100144China

To enhance energy interaction among low-voltage stations(LVSs)and reduce the line loss of the distribution network,a novel operation mode of the micro-pumped storage system(mPSS)has been proposed based on the common ***,some operation modes of mPSS are analyzed,which include the separated reservoir mode(SRM)and common reservoir mode(CRM).Then,based on the SRM,and CRM,an energy mutual assistance control model between LVSs has been built to optimize energy ***,in the simulation,compared to the model without pumped storage in the LVS,the SRMand CLRMcan decrease the total energy loss by 294.377 and 432.578 kWh,*** configuration of mPSS can improve the utilization rate of the new energy source generation system,and relieve the pressure of transformer capacity in the *** with the SRM,the proposed CRM has reduced the total energy loss by 138.201 kWh,increased the new energy consumption by 161.642 kWh,and decreased the line loss by 7.271 *** the efficiency of the mPSS improving,the total energy loss reduction of CRM will be 3.5 times that of ***,the CRMcan significantly reduce the reservoir capacity construction of mPSS and ismore suitable for scenarios where the capacity configuration of mPSS is limited.

关键词： Micro pumped storage system common reservoir mode low-voltage substation area energy interaction operating mode

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Numerical analysis for the matching of the core driven compression system in a double bypass engine

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航空动力学报 2011年第5期26卷 1066-1076页

作者： ZHANG Xin LIU Bao-jie National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics School of Jet Propulsion Beijing University of Aeronautics and Astronautics Beijing 100191 China

The numerical analysis for the matching of the core driven compression system in a double bypass variable cycle engine was presented in this *** system consists of a one-stage-core driven fan stage(CDFS),an inner bypass duct and a five-stage high pressure compressor(HPC),providing two basic operating modes: the single bypass mode and the double bypass *** vanes are necessary to realize the mode switch of the *** correct matching in the double bypass mode requires a proper combination of the mass flow,total pressure ratio and blade *** work capacity of the system decreases in the double bypass mode and the pressure ratio tends to decrease more for the CDFS and the front stages of the *** overall system efficiency is higher in the double bypass *** radial distributions of aerodynamic parameters are similar in different *** notable redistribution of mass flow downstream the CDFS in the single bypass mode leads to strong radial flows and additional mixing *** absolute flow angles into the inner bypass increase for the inner span and decrease for the outer span when the system is switched from the single bypass mode to the double bypass mode.

关键词： numerical analysis aerodynamic double bypass variable cycle engine core driven compression system core driven fan stage operating mode

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A Novel Electric Dual Motor Transmission for Heavy Commercial Vehicles

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Automotive Innovation 2021年第1期4卷 34-43页

作者： Xiangyang Xu Jiajia Liang Qingjun Hao Peng Dong Shuhan Wang Wei Guo Yanfang Liu Zhonghua Lu Jiantao Geng Bin Yan School of Transportation and Science Engineering Beihang UniversityBeijing 102206China Ningbo Institute of Technology Beihang UniversityNingbo 315832China eKontrol Co. Ltd.Suzhou 215211China

As a vital vehicle part,the powertrain system is undergoing a fast transition towards *** new integrated electric drive system has been widely used,especially for passenger *** this work,a novel electric dual motor transmission is proposed for heavy commercial *** transmission scheme is firstly introduced,which can achieve 9 different operating modes including 5 single motor modes and 4 dual motor ***,the mode shift map with minimum energy consumption is designed based on the motor efficiency map and the proposed energy management *** driving power is appropriately distributed between the two motors in dual motor modes under the condition of minimum power *** addition,a coordinated control strategy is developed for mode shift control without power *** results show that the electric dual motor transmission has advantages in power consumption and power shift ability compared with the conventional single motor automated manual transmission.

关键词： Dual motor transmission operating mode mode shift map mode shift control Torque distribution Coordinated control

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OPERATIONAL MODAL ANALYSIS SCHEMES USING CORRELATION TECHNIQUE

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Acta Mechanica Solida Sinica 2005年第1期18卷 88-94页

作者： ZhengMin ShenFan ChenHuaihai CollegeofCivilAviation NanjingUniversityofAeronauticsandAstronauticsNanjing210016China InstituteofVibrationEngineeringResearch NanjingUniversityofAeronauticsandAstronauticsNanjing210016China

For some large-scale engineering structures in operating conditions, modal param- eters estimation must base itself on response-only data. This problem has received a considerable amount of attention in the past few years. It is well known that the cross-correlation function between the measured responses is a sum of complex exponential functions of the same form as the impulse response function of the original system. So this paper presents a time-domain operating modal identifcation global scheme and a frequency-domain scheme from output-only by cou- pling the cross-correlation function with conventional modal parameter estimation. The outlined techniques are applied to an airplane model to estimate modal parameters from response-only data.

关键词： modal analysis operating mode global identifcation cross-correlation

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Comparative Analysis on Farmers' Specialized Cooperatives from the Perspective of Agricultural Industry Chain

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Asian Agricultural Research 2017年第2期9卷 6-9,11页

作者： Guangmi LU Zaiqing ZHU College of Economics and Management Huazhong Agricultural University

Taking three typical farmers' specialized cooperatives in Jingyuan County of Gansu Province as example,this paper compared with the operating mode of three cooperatives and their position in the agricultural industry chain,and analyzed operating characteristics,problems,and similarities of three cooperatives and their functions in the agricultural industry *** study indicated that the farmers' specialized cooperatives can accurately find their position in the agricultural industry *** is helpful for raising their comprehensive competitiveness and it is very important to manage the survival and development of farmers' specialized cooperatives,which is of utmost importance to their effective *** to this study,the government should strengthen its support,speed up the cultivation of new-type professional farmers,while farmers' specialized cooperatives should grasp the operating characteristics,locate themselves and integrate *** are effective measures for promoting healthy operation of farmers' specialized cooperatives.

关键词： Farmers’ specialized cooperatives operating mode Agricultural industry chain Comparative analysis

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论制造网格技术对企业自主创新的助推作用

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企业管理研究 2007年第5期

作者：周镭孙海长陶国培

制造网格技术的发展对传统制造理念带来革命性冲击，也对企业创新有巨大的助推作用，并为我国企业带来新的机遇和挑战。制造网格能够在最大程度上实现资源的共享，克服空间距离和异构性给不同企业间协同带来的障碍，为实现敏捷制造和虚... 详细信息

制造网格技术的发展对传统制造理念带来革命性冲击，也对企业创新有巨大的助推作用，并为我国企业带来新的机遇和挑战。制造网格能够在最大程度上实现资源的共享，克服空间距离和异构性给不同企业间协同带来的障碍，为实现敏捷制造和虚拟企业的运作提供支持，形成具有数字化、柔性化、敏捷化等基本特征的优势互补的协同企业。以制造网格为契机开展自主创新是我国企业的必然选择。

关键词：制造网格虚拟经营动态联盟经营模式企业创新 network in manufacturing virtual operation dynamic alliance operating mode enterprise innovation

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