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IET International Conference on Intelligent and Connected Vehicles, ICV 2016

作者： Zhu, Bing Liu, Zhipeng Zhao, Jian Chen, Yizhou Deng, Weiwen State Key Laboratory of Automotive Simulation and Control Jilin University Changchun130022 China Key Laboratory of Bionic Engineering of Ministry of Education Jilin University Changchun130022 China

ISBN: (纸本)9781785618260

The identification strategies of driver behaviour characteristics based on the bionic intelligent algorithms are introduced in this paper. First, a driver behaviour data acquisition system is established based on the dSPACE simulation platform. Then, in order to recognize the characteristics of driver behaviour, the preview optimal curvature model is chosen as the ideal driver behaviour model. This model consists of two parts as the vehicle model and the driver model. The vehicle model parameters are identified by least square method, and the driver model parameters that could represent different types of driver behaviours are identified through genetic algorithm and particle swarm optimization method. Finally, simulations are carried out to verify the identification strategies by Carsim and Matlab/Simulink. As compared the identified results with the real driver behaviour data, there is a high similarity between them, which means the driver behaviour characteristics that have been identified are very precise and reliable.

关键词： Genetic algorithms

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Direct Yaw-moment control of Vehicle Stability Based on Robust Sliding Mode Observer 28

Direct Yaw-moment Control of Vehicle Stability Based on Robu...

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第28届中国控制与决策会议

作者： Zhang Niaona Cao congcong Xu Caimao Yan Wenling Electronic and Electrical Engineering Institute Changchun University of Technology State Key Laboratory of Automotive Simulation and Control Jilin University

ISBN: (纸本)9781467397155

In order to improve the driving stability of vehicles under high speed and poor road and other extreme conditions and overcome excessive steering and under steering problems appeared during the vehicle running process,a new robust control strategy based on direct yaw moment for the vehicle stability is *** of all,according to the steering wheel angle and longitudinal speed,the robust sliding mode observer is designed through the two degree-of-freedom vehicle model to get ideal side slip angle and yaw *** the deviation between the yaw rate and the ideal one is selected as the input *** step terminal sliding mode control strategy of the vehicle stability based on direct yaw moment is *** not only overcomes the chattering problem existed in the sliding mode,but also solves the handling stability problem caused by the failure of designed control strategy due to inaccurate modeling,parameter perturbation and the changes of external *** addition,finite time convergence of the direct yaw moment system for the vehicle stability is achieved,and the rapidity and robustness of direct yaw moment system is *** it also realizes the finite time convergence of the vehicle stability directly *** effectiveness of the proposed method is validated through simulation in this paper.

关键词： yaw moment high-order sliding mode robust observer

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Wind-CHP generation aggregation with storage capability of district heating network

Wind-CHP generation aggregation with storage capability of d...

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2017 IEEE Conference on Energy Internet and Energy System Integration, EI2 2017

作者： Yu, Jing Shen, Xinwei Sheng, Tongtian Sun, Hongbin Xiong, Wen Tang, Lei Shenzhen Environmental Science and New Energy Technology Engineering Laboratory Tsinghua-Berkeley Shenzhen Institute Tsinghua University Shenzhen China State Key Lab of Control and Simulation of Power System and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing China Guangzhou Power Grid Company Guangzhou China Beijing Qingda Gaoke System Control Company Beijing China

ISBN: (纸本)9781538614273

The strong coupling of electricity and heat of combined heat and power (CHP) unit in cold season results in the loss of flexibility, which may cause massive wind power curtailment if they are in the same system. This issue could be handled with the thermal storage capability of a district heating network (DHN) that could supply flexibility for CHP to decouple the strong coupling of heat and electric power supplies. In this paper, a wind-CHP generation aggregation(WCGA) model is formulated, which motivates CHP to increase wind power integration by increasing total profit of the system, while considering the additional flexibility supplied by DHN. In WCGA model, DHN is formulated as an energy-storage-like (ESL) model that considers the storage capability of DHN based on dynamic characteristics of temperature and time delay effect of DHN. The potential benefits of the proposed model have been demonstrated by case study in terms of enhancing, wind power integration as well as total profit. © 2017 IEEE.

关键词： District heating

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Voltage balance optimisation among subsystems of wind-photovoltaic-ES hybrid generating system

Voltage balance optimisation among subsystems of wind-photov...

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6th International Conference on Renewable Power Generation

作者： Wu, Han Li, Yan Lu, Zongxiang Tang, Haiyan State Key Lab of Control and Simulation of Power Systems and Generation Equipments Dept. of Electrical Engineering Tsinghua University Haidian District Beijing100084 China North China Electric Power Research Institute Co. Ltd Beijing100045 China State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute Haidian District Beijing100192 China

Wind-photovoltaic-energy storage (ES) hybrid generating system has numerous reactive power sources. It is crucially important for coordinated control of these reactive power sources. According to the test results, there are unbalanced control problem in subsystem voltage of the hybrid generating system. The problem caused reactive power circulation and loop current. A subsystem voltage balance optimisation strategy is proposed to solve the problem. The case study shows the efficiency of the proposed strategies. © 2017 Institution of engineering and Technology. All rights reserved.

关键词： Reactive power

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Economic analysis of multi-energy virtual power plant considering market information

Economic analysis of multi-energy virtual power plant consid...

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2017 IEEE Conference on Energy Internet and Energy System Integration, EI2 2017

作者： Wang, Jiazhen Shen, Xinwei Guo, Qinglai Xiong, Wen Tang, Lei Shenzhen Environmental Science and New Energy Technology Engineering Laboratory Tsinghua-Berkeley Shenzhen Insitute Tsinghua University Shenzhen China State Key Lab of Control and Simulation of Power System and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing China Guangzhou Power Grid Company Guangzhou Lei Tang Beijing Qingda Gaoke System Control Company Beijing China Beijing Qingda Gaoke System Control Company Beijing China

ISBN: (纸本)9781538614273

Integrated Energy System is beneficial for promoting the distributed renewable energy (DRE) consumption, thereby alleviating environmental pollution and energy shortage. In this paper, we propose a virtual power plant (VPP) structure considering the feature of heat and electric power system integration, which is defined as Multi-energy Virtual Power Plant (MVPP). MVPP is allowed to participate in the electricity market;and price information from bulk power market can affect heating system through the coupling devices, thus optimizing the co-operation of electric and heat system. MVPP is also involved in the auxiliary service market, a penalty term is designed for the Utility to charge MVPP service fee so that power fluctuation on transmission line can be reduced. The case study proved the effectiveness of the penalty term and MVPP is able to provide reserve service for Utility in peak load hours by multi-energy flow coupling under the regulation of feed-in tariff. © 2017 IEEE.

关键词： Virtual Power Plants

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Evaluation of Prediction Choice in Economic Dispatch with Uncertainty

Evaluation of Prediction Choice in Economic Dispatch with Un...

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2017 International Electrical and Energy Conference (CIEEC 2017)

作者： Fan Zhang Ying Qiao Zongxiang Lu Ningbo Wang Jin Li Kun Ding State Key Lab of Control and Simulation of Power Systems and Generation Equipments Dept.of Electrical EngineeringTsinghua University Key Laboratory of Wind Power Integration Operation and Control of Gansu Province Gansu Electric Power Corporation Wind Power Technology Center

The unavoidable wind power forecast error results in the pervasive uncertainty in power system economic *** order to solve optimization problem such as economic dispatch with random variables,the commonest and simplest method is using a deterministic value to replace this random *** kinds of predictions are used such as maximumlikelihood approximation,expectation and *** study analyses the effect of these prediction choices on uncertainty of power system via comparing their statistical *** is shown that when the wind power output is very volatile,the quality of these prediction choices is not ***,a simplified three-unit thermal system and a tenunit system are studied for illustrating the consequence of statistical inconsistency.

关键词： Economic Dispatch expectation maximumlikelihood prediction uncertainty wind power forecast error

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Research on Peak Load Regulation Capacity Planning for Long-term Market

Research on Peak Load Regulation Capacity Planning for Long-...

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2017 International Electrical and Energy Conference (CIEEC 2017)

作者： Jiheng Jiang Ying Qiao Zongxiang Lu Ningbo Wang Jin Li Kun Ding State Key Lab of Control and Simulation of Power Systems and Generation Equipments Dept.of Electrical Engineering Tsinghua University Key Laboratory of Wind Power Integration Operation and Control of Gansu Province Gansu Electric Power Corporation Wind Power Technology Center

Insufficient power capacity for peak load regulation has caused loss of wind power accommodation in China.A regulation capacity market is under consideration to encourage more peak regulation service,thus how much the market would be is important for each participant.A new peak-load regulation capacity planning method is proposed for long-term market based on the wind power curtailment evaluation model using probabilistic production *** method is suitable for the situation in the planning stage without the knowledge of detailed sequences of load and renewable power,and includes modeling of two peak load regulation measures,increasing the adjustable capacity and to shift some long-lasting units to on/off cycling units.A typical area in China is studied in the paper to evaluate the actual effects of different measures.

关键词： adjustable capacity capacity planning peak load regulation probabilistic production simulation

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Microstructure and mechanical properties of sheep horn

Microstructure and mechanical properties of sheep horn

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第五届国际仿生工程学术大会(ICBE2016)

作者： Bing Zhu Ming Zhang Jian Zhao State Key Laboratory of Automotive Simulation and Control Jilin University Key Laboratory of Bionic Engineering of Ministry of Education Jilin University

The male bovines generally have huge hones. Hones are their weapons to compete for territory, hunt for food and get the opportunity to mate with the females. As a means of defense and attack, the sheep horns can withstand the maximum impact force of approximately 3400 N during their head-on collision. During bovines' life, the horn will not be sloughed off, so the horn needs to have sufficient strength and toughness when the bovines fight. In the long-term evolution process, the bovine's horn has evolved into a kind of natural composite material which has excellent structure and mechanical property. The microstructure and mechanical properties of sheep horn living in northeast China are investigated in the paper. We make the specimens from the base, center and tip of the horn sheath to do the quasi static tensile tests and compression tests. In the tensile tests, the mechanical properties of the horn sheath can be divide into four stages: liner elasticity, plateau, strengthen and local deformation, the longitudinal elastic modulus of the three parts are 1.68± 0.09 GPa, 2.23±0.12 GPa and 1.85±0.17 GPa, respectively. Besides, the transverse and longitudinal contrast samples are derived from the base. The maximum tensile strength of the transverse specimens are only half of the longitudinal tensile strength and the ductility is far less than that of the longitudinal samples. In the compression tests, the compression modulus and the yield strength of the longitudinal samples in center part are 2.14±0.19 GPa and 68.52 ±3.58 MPa, respectively. The results show the similar trend with the longitudinal samples of center part in tensile test. The mechanical properties of the horn is closely related to the macro and micro structure, The sheep horn is composed of the inner and outer layers in macrostructure, outer layer is mainly made up of keratinized protein which possesses excellent load bearing capacity and impact strength, the inner layer is loose and porous which has the

关键词： sheep horn microstructure mechanical properties

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Research on aerodynamic noise reduction of cavity using bionicnonsmooth method

Research on aerodynamic noise reduction of cavity using bion...

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第五届国际仿生工程学术大会(ICBE2016)

作者： Junshuai Wang Yingchao Zhang Bing Fan Luquan Ren Key Laboratory of Automotive Simulation and Control Jilin University Key Laboratory of Bionic Engineering Ministry sf EducationJilin University

In order to explore the method for reducing aerodynamic noise caused by the cavity structure, the typical cavity model M219 scale model was chosen as the basic model. The maximum noise of the basic model and the flow inside the cavity can be obtained through the numerical simulation. Inspired by the bionic design, selecting the bionic non-smooth structure by the following two ways: one is selecting the known bionic non-smooth structure from the reference literature which has the good effect on the aerodynamic flow field of the bionic non-smooth structure, such as the bionic v-shaped non-smooth structure and the bionics hemispherical structure;The second is using the method of engineering bionics to select the structure that can realize the improvement of the cavity flow field, which is according to the analysis for the cavity inside flow and cavity aerodynamic noise principle, such as triangle structure and arc structure. In order to get the optimized plan for the cavity aerodynamic noise reduction, for the same bionic non-smooth structure, it mainly considers the position of the structure, especially on the front of the cavity and the bottom of the cavity and the after of the cavity. In the study on the location of the process, this paper considered the different between the single factor and multiple factors on aerodynamic noise reduction effect. In addition, I put the bionic non-smooth structure size for the cavity aerodynamic noise reduction effect into account. Furthermore, for different bionic non-smooth structure, this paper also considers the impact on aerodynamic noise reduction effect between each other. The research mainly using a hybrid LES-Fw-H and SST-Fw-H method to obtain the sound pressure level curve of the optimization structures, and then pick out the structure which has the best effect. So, we not only won the location and size of the bionic non-smooth structure on the influence of the noise reduction effect, but also through the establishment of

关键词： Aerodynamic noise bionics non-smooth structure Cavity noise reduction

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Photoreactivity of Metal-Organic Frameworks in Aqueous Solutions: Metal Dependence of Reactive Oxygen Species Production

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Environmental Science and Technology 2016年第7期50卷 3634-3640页

作者： Liu, Kai Gao, Yanxin Liu, Jing Wen, Yifan Zhao, Yingcan Zhang, Kunyang Yu, Gang School of Environment Beijing Key Laboratory for Emerging Organic Contaminants Control State Key Joint Laboratory of Environmental Simulation and Pollution Control Tsinghua University Beijing100084 China MOE Key Lab. of Environmental Remediation and Ecosystem Health College of Environmental and Resource Sciences Zhejiang University Hangzhou310058 China Lyles School of Civil Engineering Division of Environmental and Ecological Engineering Purdue University West LafayetteIN47907 United States

Promising applications of metal-organic frameworks (MOFs) in various fields have raised concern over their environmental fate and safety upon inevitable discharge into aqueous environments. Currently, no information regarding the transformation processes of MOFs is available. Due to the presence of repetitive π-bond structure and semiconductive property, photochemical transformations are an important fate process that affects the performance of MOFs in practical applications. In the current study, the generation of reactive oxygen species (ROS) in isoreticular MIL-53s was studied. Scavengers were employed to probe the production of 1O2, O2•-, and •OH, respectively. In general, MIL-53(Cr) and MIL-53(Fe) are dominated by type I and II photosensitization reactions, respectively, and MIL-53(Al) appears to be less photoreactive. The generation of ROS in MIL-53(Fe) may be underestimated due to dismutation. Further investigation of MIL-53(Fe) encapsulated diclofenac transformation revealed that diclofenac can be easily transformed by MIL-53(Fe) generated ROS. However, the cytotoxicity results implied that the ROS generated from MIL-53s have little effect on the viability of the human hepatocyte (HepG2) cell line. These results suggest that the photogeneration of ROS by MOFs may be metal-node dependent, and the application of MIL-53s as drug carriers needs to be carefully considered due to their high photoreactivity. (Chemical Equation Presented). © 2016 American Chemical Society.

关键词： Photoreactivity

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