Proceedings of the 2015 International Power, Electronics and Materials Engineering Conference

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225 articles

Research on the development of Chinese traffic cloud computing

Hua Chen
Traffic is an important area of cloud computing application and development, and the traffic cloud computing is a key means to provide powerful support for the basic service and promote the coordinated development of the transport system by service model innovation and information resources integration...

Dynamic Model of Wind Speed Distribution in Wind Farm Considering the Impact of Wind Direction and Interference Effects

Zhe Dong, Ran Li, Lei Dang
The accurate and practical wind speed model of wind farm is the basis of the relevant research work of wind power prediction. This paper based on the wind farm and the real-time data of wind turbine, put forward a kind of dynamic distribution model of wind speed that consider the wind turbine wake and...

Research on Predict Induction Ground Wire Producing

Guangmin Jiang, Ting Yuan, Desheng Ding, Yixin Ding, Lin Han, Yaowei Wu, Jinglong Mu, Chunmei Guan, Hongda Huang, Weisong Qu, Zhiheng Chen
The current transmission line is constantly improved and updated, in order to save space, a lot of back and multi-line double back. Power lines during the operation induced voltage is very large, you must mount the ground. Ground wire must be multi-strand copper wire, whose cross-sectional area of not...

Dawson-type Polyoxometalate and Carbon nanotubes Nanocomposite for high-performance Supercapacitor Electrodes

Shuping Liu
A nanocomposite film based on Dawson-type polyoxometalate cluster (P2W18) carbon nanotubes (CNTs) and chitosan (CS) were prepared on quartz and ITO substrates by layer-by-layer (LbL) method. These lms were characterized by UV–vis spectroscopy, cyclic voltammetry (CV) and Scanning electron micrographs...

Electrochromic Composite Films of Tunable Color based on Polyoxometalate and Auxiliary Materials

Shuping Liu
The addition of another electrochromic component has been considered to be an important way to obtain multicolor film. Herein, we fabricated the composite films containing polyoxometalate (POM) clusters, auxiliary materials and polyelectrolyte on quartz and FTO substrates by layer-by-layer assemble method...

Research on the Dynamic Comprehensive Evaluation of Power Quality Based on the Improved Scatter Degree

Min Guo, Weidong Chen, Qingren Jin, Hongbo Chu
In view of the sensitivity of power quality indices on different loads, a method for the dynamic comprehensive evaluation of power quality based on the improved scatter degree was put forward. Firstly, according to the sensitivity of power quality indices on different loads, the order relation among...

Three-dimensional simulation of floating wave power device

Xixi Pan, Shiming Wang, Yongcheng Liang
Due to large amounts of traditional energy consumption, faces increasingly dry up, people began to look for alternative new energy. And waves in the ocean energy can make a very good substitute, so countries began to study wave energy power generation. In the study of wave power device, the movement...

Electromagnetic analysis and optimization of copper bar in foil winding transformer

Yan Li, Naisheng Liu, Longnv Li, Bo Zhang
In this paper, a novel overlapping approach between the copper foil windings and copper bar is presented. The electromagnetic field is computed and analyzed using three-dimensional (3-D) finite element method based on an actual SCB transformer with amorphous foil winding. The current density cloud of...

Calculation of Stray Losses and Temperature Distribution in Power Transformer Using Coupled Electromagnetic-Thermal Field Analysis

Xiuke Yan, Xiangdong Yu, Min Shen
In order to calculate stray losses and predict temperature distribution as accurately as possible in power transformer tank walls and other mental constructive parts, an analysis method of the electromagnetic-thermal coupling is presented. TEAM Problem 21 (P21-B, P21a-2, P21c-M1) are adopted to verify...

A Novel Adaptive Distance Protection Principle for Distribution System with Distributed Generators

Jianfang Li, Xiaohui Song, Jing Ma
The value setting of the traditional distance protection has become very difficult for the distribution system with distributed generators (DGs) owing to the randomness of the DG output power. This paper proposes a new adaptive distance protection scheme to solve this problem. Firstly, on the basis of...

Corrosion Resistance of MB8 Magnesium Alloy after Ultrasonic Impact Treating

Bolin He, Songsong Xia, Yingxia Yu, Zhaoxia Chen, Jianping Shi
MB8 magnesium alloy was treated by using HJ-III type ultrasonic impact treatment machine. The effect of ultrasonic impact treatment parameters on the microstructure, residual stress in the surface and corrosion resistance was investigated. The test results indicate that the grain in the treated area...

Literature Review of Fault Location Research for HVDC Transmission Lines

Wang-Qing Mao, Qi Yang, Shuang Zhang, Feng Gao, Yun-ting Song, Ming-Yu Yang
The HVDC line fault location methods at home and abroad are surveyed in this paper. Firstly, the disadvantage of the existing fault location techniques of HVDC transmission line is analyzed, and it points out that the engineering applications of fault location based on traveling wave principle is most...

SINGLE SAMPLE RECOGNITION BASED ON LPP

Qingqing Li, Xueqiang Lv, Kai Zhang
For a single sample face recognition problems, this paper propose a supervised two-way two-dimensional locality preserving projection method to extract the facial features, based on locality preserving projection. The recognition phase, this paper presents a method of sub-characteristics voting, In this...

The design of IOV overall structure and the research of IOV key technology in intelligent transportation system

Li Fan, Gangyan Li, Jian Yang, Hongzhi Sun, Zhanghua Luo
Internet of Vehicles is the basis of the application of intelligent transportation system .This article has carried on the analysis and discussion about the concept of IOV, applicable architecture, system service type, and need to emphasize solving the key technology of application and development of...

Surface modification of cotton fabric to create water repellence property via atom transfer radical polymerization

Shiwei Li, Zhijuan Liu, Tieling Xing, Guoqiang Chen
To enhance the water repellent property of cotton fabric, cotton was grafted using dodecafluoroheptyl methacrylate (DFHMA) monomer via atom transfer radical polymerization (ATRP) method in aqueous media. The structure of grafted cotton fabric was characterized by scanning electron microcopy (SEM) and...

Seismic Behavior of Reinforced Concrete Hollow Bridge Piers Retrofit with ECC Jacket

Zhiguo Sun, Baokui Chen, Bingjun Si
A new design was proposed in which the Engineered Cementitious Composites (ECC) was used to improve the seismic behavior of the reinforced concrete hollow bridge piers. The ECC jacket was used both in and out of the cross section of the hollow bridge piers to improve the strength and ductility of the...

Enhanced Biodegradation of HMW- PAHs using Immobilized Microorganisms in an Estuarine Reed Wetlands Simulator

Ruying Huang, Weijun Tian, Huibo Yu
Biodegradation of pyrene and indeno(1,2,3-cd)pyrene in reed rhizosphere soil was carried out in a small-scale wetland simulator using reed as well as microorganisms immobilized on cinder beads under natural environmental conditions. The results show that the stability of the introduced strains was enhanced...

Space Vector PWM for Three Series-Connected Permanent Magnet Synchronous Motors Drive System

Hua-qiang Zhang, Xiao-tong Lu, Xin-sheng Wang, Xue-yi Wang, Yan-li Leng
Since multiphase machines have more additional degree of freedom than three-phase machine, which can be utilized to control other machines, a number of machines can be controlled independently. The stator windings of the machines can be series connected by an appropriate phase transposition, with the...

Fault Diagnosis Simulation Model Study of Wind Turbine Drive Train Based on SIMULINK

Xianjiang Shi, Heng Du, Jingchun Zhang, Jiankun Zhang, Junshan Si
In order to study the response characteristics of the wind turbine drive system gear fault in its electrical signal in the stator theoretically, on the basis of considering the gear mesh stiffness change and simulating the broken gear fault characteristics, building the gear vibration dynamics differential...

Research of Doubly Fed Induction Wind Power Generation System Control and Experimental Platform Based on DSP

Tiantian Xu, Dongdong Li
This paper studied doubly fed induction wind power generation system and modeld its wind turbine and generation. The vector control algorithem was proposed to conduct MPPT (Maximum Power Point Tracking) strategy. An experimental platform was built based on DSP of TMS320F28335 series.The experimental...

Coordinated Restraining of SSO via SSDC and SEDC in hybrid AC-DC System Containing MMC-HVDC

Shupeng Li, Zhenyu Xu, Yuchao Qiao
In this paper, aiming on the sub-synchronous oscillation (SSO) of hybrid AC-DC transmission system which contains modular multilevel converter based High Voltage Direct Current (MMC-HVDC), the coordinated control of sub-synchronous oscillation damping controller (SSDC) and supplementary excitation damping...

Research on Intelligent Patrol System of Electric Power Communication Based on Dispatching Intensification

Zhiyuan An, Fangfang Dang, Lijie Wu, Yi Yang
The paper presents a design of Electric Power Communication Patrol System based on Dispatching Intensification. The system overall architecture, system security architecture, and system function architecture are elaborated in detail. The system overall architecture mainly explains the perception layer,...

Natural Frequency and Dynamic Response of Rotor System of Steam Turbine Modelled with Euler-Bernoulli Beam

T.T. Deng, J.S. Wang, X.J. Li, J.L. Zhong, S.B. Wang, S. P. An, W.G. Yang, D. X. Jiang
Based on Finite element method (FEM), analysis of natural frequency and dynamics response is carried out in this work. Firstly, modeling of rotor system in steam turbines is analyzed with Euler-Bernoulli beam element. Secondly, natural frequency of the rotor system is obtained and compared. Thirdly,...

Behavior Analysis of Water Droplets in Wake Flow of a Transonic Cascade

Lanxin Sun, Tao Sun, Yigang Luan
The compression process in an axial compressor with water injection is a complex two-phase flow involving many changes of water existing forms. Boundary conditions close to the real ones of water droplets on compressor blade are extremely important for numerical simulation. Water droplet impinging and...

Simulation and optimization of micro power generation process by utilizing urban natural gas pipeline pressure energy

Xiaxi Li, Hui Zhang, Wendong Xu, Linlin Xing, Wei Duan
Transmission pipelines carrying natural gas across long distances often work at high pressures (up to 10 MPa). The high-pressure natural gas is regulated though a throttling device, which results in much waste of pressure energy. Meanwhile, more pressure reducing stations exist the problem of no electric...

Characteristics of Ying Shan formation Carbonate Sequence Stratigraphy in middle of the Tarim Basin

Jianfa Han, Hao Li, Xiaoyong Hu, Qinglong Wang, Yubin Song
The Ying Shan formation carbonate systems is identified 11 kinds of sequence boundary characteristics ,generalized 3 genetic types of sequence boundary and divided into 5 third-order sequence(Sq1-Sq5) to establish sequence stratigraphic framework in Ying Shan formation , Tarim Basin by the integrated...

Facile synthesis of porous cobalt oxides through solvothermal method

Lijuan Wan
The morphology may significantly influence the properties and applications of materials, thus the ability to tune the structure, size, and shape of inorganic materials is an important goal in obtaining nanomaterials with novel properties. A novel and facile synthesis route for the manufacture of porous...

Synthesis of cuprous oxides thin film with different morphologies by electrodeposition

Lijuan Wan, Dongxiang Cheng, Ping Wang
Cuprous oxides thin film with different morphologies were formed on F-doped tin oxide (FTO) covered glass substrates by potentiostatic deposition of cupric acetate. The effects of electrodeposition temperature and Br on the crystal morphologies of cuprous oxide were studied. Different crystal morphologies...

A Generally Applicable Laser Doppler Velocimetry

Lili Zhao, Meishan Jin, Jing Li
Photonic Doppler velocimetry (PDV) is a fiber-based interferometer which has been widely used in dynamic shock physics research. Although the conventional PDV systems are simple to construct, it has special requirement to the probe for getting appropriate amount of reference light. This paper proposes...

A design of receiver front-end low-noise electrical tuning amplifier circuit

Xiubin Ye, Di Zhang, Guopeng Kou
This paper proposes a design scheme on the low-noise electrical tuning amplifier circuit of receiver front-end. According to key indicators to be achieved, it made a overall simulation design of the front-end amplifier by ADS, focusing on the analysis of the characteristics and parameter selection method...

The stability analysis of 3-RPR wind tunnel test bed based on workbench

Ziyan Shao, Wenjia Chen, Yongjin Hu, Guanjian Li
This paper introduces a kind of wind tunnel test bed with a 3-RPR structure. Ansys workbench is chosen to be the main tool here to measure the structure’s stability. Linear static structure analysis, modal analysis and harmonic response analysis are carried out to detect the force, the frequency and...

Research on Welding Residual Stresses of Welded H-Beam Considering Butt Weld and Fillet Weld

Changchao Zhou, Jia Liu, Runchang Zhang
In this paper welding residual stresses of welded H-beam considering both butt weld and fillet weld have been researched. Taking the welded H-beam frame as background, basing on technological parameters of arc welding construction sequence and the fabricated method, the three dimensions thermal-mechanics...

Timing for an Integrated Accelerograph EDAS-AS with GPS and NTP

Chaoyong Peng, Bing Xue, Jiansi Yang
In order to solve problems of “jump second” when using only GPS for timing service and inconvenience of installing GPS antennas in some places, we propose a new algorithm combining GPS and NTP to adjust the local clock of an integrated accelerograph. The process flow of the method was described in detail,...

Adhesion of diamond film on functionally gradient WC-10wt. %Co hardmetal

Yigao Yuan, Jianpeng Li, Weiquan Sun
Diamond coated tools of cemented carbide substrate with high Co content are extremely useful for machining difficult-to-cut materials. However, it is very difficult to deposit a well-adherent diamond coating on WC-Co with high Co content because of the strong catalytic effect of Co. In this work, a new...

Research on Electric Field Optimization of 750kV Double-joint Strain Insulator String Fittings

Yan Xie, Mu Li, Changzheng Zheng, Zhe Mao
Double-joint strain insulator fittings are the main equipment substations. It is great significance for reducing its maximum electric field strength to avoid corona noise and to improve substation electromagnetic environment. Firstly double-joint strain insulator string fittings simulation model is given...

Study on Antibacterial Activity of Anthocyanins from Blueberry Wine Pomace

Chen Liu, Anjun Liu, Yanhong Ma, Kaihong Huang, Yahui Li, Hongzhi Zhang
This paper studied the antibacterial activity of the anthocyanins from blueberry wine pomace. The blueberry wine pomace, which is by product in blueberry wine process, is rich in anthocyanins, and the anthocyanins extract from blueberry wine pomace, then the extraction was purified and components of...

Fault Diagnosis of Power Transformer Based on Memristive Neural Network

Xun Wang
Memristive neural network is applied to fault diagnosis of power transformer in this paper. A model of memristive neural network built by MATLAB Simulink can be used to diagnose and analyze the failure information. Experimental results show that the proposed method can achieve better results and has...

Kaolin suspension compound processed by biological flocculant and ferric salt

Z. Zhang, L.N. Zheng, X. Ai, X.R. Jiang
By using kaolin suspension as the research object and the coagulation test as the basis, the optimum dosage and the fractal floc characteristics of high turbidity and low turbidity water processed by the biological flocculant (BFs) and FeCl3 were investigated. The results demonstrated that the optimum...

Photolithography technology in electronic fabrication

XiaoMing Hu
The paper introduce the photolithography technology. First, the writer explain the process of photolithography. a modern wafer (form IC) will go through a photolithography cycle up to 50 times, some 100 times more. then, the article illustrate photoresist , photoresists are classified two groups :positive...

Research on the Electromagnetic Relay Selection and Reliability

Yongqiu Liu
The electromagnetic relay is one kind of controlling electric appliances. The electromagnetic relay is also a kind of electromechanical product. It has its superiority over other controlling appliances because of it’s highly insulation with open circuit and its absolutely little resistance with closed...

Short-term Wind Power Forecast Based on GA-Elman Neural Network and Nonlinear Combination Model

Pengyu Zhang
The accuracy of short-term wind power forecast is important to the operation of power system. Based on the real-time wind power data, a wind power prediction model using Elman neural network is proposed. In order to overcome such disadvantages of Elman neural network as easily falling into local minimum,...

Design of an Energy-saving Home Furnishing Device by Human-body Induction

Linan Zhang
China Certification Centre for Energy Conservation Product found in the investigation that the standby energy consumption accounts for about 10% of the electricity consumption of Chinese family. This paper presents an energy-saving design by human body induction in order to cut off the power supply when...

High Directivity Horn Antenna of Metamaterial in Terahertz

Xiangjin Quan, Shiquan Zhang, Hui Li
A triangular metamaterial structure unit is presented and the effective permittivity and permeability parameters are retrieved from the transmission and reflection data. Simulation results show that the combined unit exhibits left-handed passband in terahertz (THz). Triangular electromagnetic metamaterial...

Research development of compound bioflocculant

Lixin Li, Fang Ma, Tong Pan
The research background and characteristics of compound bioflocculant (CBF) were introduced. The paper focused on research and application of CBF, including producing compound bioflocculant by Low-cost substrate and engineering application of CBF. Finally the research development of CBF in the future...

MPC5602P-Based Hardware Circuit Design for Electric Power Steering System

Qinghe Liu, Qingyang Xu, Weiguang Kong, Shouzhi Liu
This paper analyzes the design requirements of high-performance EPS controller, on the basis of which, we select Freescale Power Architecture ECU MPC5602P special for EPS. By the means of Modular Design, we propose a new design for EPS controller hardware, which focuses on MPC5602P minimum system, power...

The gasifier temperature control design based on the fuzzy PID control

Peng Cheng
In view of the biomass gasification processes a nonlinear, non-minimum phase characteristics, instability, dynamic process of the characteristics of the large delay and load disturbance, contains a large number of uncertainty factors, accurate mathematical model is hard to express, using a single control...

The application of unstructured grid in related numerical programming

Si Shen, Yan-ling Guan
In computational fluid dynamics programming, meshing quality determines the reliability of the results of numerical calculation. For numerical programming in heat and mass transfer of U-type ground heat exchangers (GHE) in ground source heat pump (GSHP) systems, considering the limitation of the structured...

Elastoplastic Analysis of Casing Stress in Thermal Recovery

Shimin Dong, Jie Yang
On the basis of the main thermal recovery wells casing damage characteristics, the temperature rise of the casing-cement is clearly defined by the simulation analysis of thermal recovery wells wellbore temperature field at the end of steam injection. Based on the theory of thick wall cylinder in the...

A New Definition of Multi-Infeed Short Circuit Ratio Considering Control Modes of DC System

Kang Zhao, Dong Yang, Yutian Liu
The mathematical relationship between reactive power consumed by DC system and AC voltage on inverter bus is derived under different control modes, respectively. Based on these relationships, a new definition of multi-infeed short circuit ratio (MISCR) is formulated from the power-flow model of PQ decoupled...

Design of Indoor location System Based on Power Line Communication and RFID

Xiaojun Liu
The paper designs an indoor location system based on RFID and power line carrier technology, introduces the hardware structure and software system working principle. Use low-voltage power line inside the building to solve the field wiring and information transmission. Use RFID technology to get position...