Proceedings of the 2015 2nd International Forum on Electrical Engineering and Automation (IFEEA 2015)

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82 articles

Heat Load Forecasting of District Heating System Based on Numerical Weather Prediction Model

Hongying Yang, Shuanglong Jin, Shuanglei Feng, Bo Wang, Fei Zhang, Jianfeng Che
This paper reports an application of Numerical Weather Prediction (NWP) in the heat load forecasting field. The NWP is applied to obtain the correlated weather parameters of the heat load, and then the properly structured Artificial Neural Network (ANN) model is designed to perform the prediction. Satisfactory...

Out-of-step Protection combining Three-impedance Element Model with the Equal Area Criterion

Liang Yuan, Zhaorong Zhang, Chong Chen
This paper proposes a new procedure for out-of-step protection through the combination of a three-impedance element model with equal area criterion. The curve of the system is transferred into curve and then curve is applied to forecast whether the oscillation between the generator and the power system...

Mining Maximal Frequent Itemsets over Sampling Databases

Haifeng Li
Maximal frequent itemset is an important representation of frequent itemset. This paper focuses on how to achieve the maximal frequent itemsets over databases by sampling technique. We use a tree-based data synopsis to maintain the frequent itemsets, based on which, an efficient algorithm SMFI is proposed....

Efficiency and Stability of Capacitance of the PV System

Guozhong Zhou, Yan Cui
The output of the PV array capacitance change influence the output efficiency of photovoltaic power generation system. The study of the circuit is a stand-alone photovoltaic power generation system, theoretical analysis and simulation results can be well combined with the PV array output suggests adding...

Influence of Modulation Rate on Energy Efficiency for Relay-aided Transmission: Amplify-and-forward Protocol

Fangfang Chen, Tao Wang, Xuping Zhai, YanZan Sun
This paper describes a general relay system on the condition of a given bit-error-rate(BER). The message bits are transmitted with the assistance of a relay node using one-way amplify-and-forward(AF) relaying protocols, and the effect of modulation rate on energy efficiency (EE) is studied. First, we...

Multi-Motor Common DC Bus Energy Feedback Grip Based on Super Capacitor Energy Storage Application Research

Yao Chen, Xia Chen, Yulin Xu, Yue Xu, Zheng Wang
With the increase of demand for energy, energy recycling is becoming a hot spot in recent studies.The problem of motor feedback braking energy feedback system in energy fluctuation was proposed,the system is based on the combination of the super capacitor energy storage.the super capacitor can feed common...

Study on the Energy Storage Device in PV Generation System

Jingguo Rong, Yuan Tian
In recent years, the photovoltaic generation has become an important form of distributed generation. PV is greatly influenced by outside conditions such as light and temperature, and causes the stronger intermittent and randomness of the power output. As a result, storage devices are needed to improve...

Research on the Multiplayer Online Virtual Experiment System Based on Kinect Somatosensory Interaction

Wenlan Guo, Jialiang Zhang, Yafei Cai, Bowen Sun
According to the needs for many people conducting a certain virtual experiment at the same time in different places, a multiplayer online virtual experiment system built by Kinect and Unity 3D engine is proposed. In this system, the Kinect is implemented to complete the motion operation, which can improve...

Simulation of a Series Double Cavity Buffer on the Landing Gear

Xu Zhang, Da Song, Wenxiu Shang, Lixun Zhang, Kunlun Wu, Yiwen Zhang, Qihe Zhang
Adopting high performance buffer is the foundation of the landing gear on the helicopter. Based on established models on Adams/Aircraft, a novel type of series double cavity buffer on the landing gear is investigated by dynamic simulation. Corresponding simulation and analysis are achieved, which is...

Study of on-line Monitoring of XLPE Cable’s Device and Assessment by Fuzzy Theory

Juwei Ye, Qinghuan Qin, Chen Luo, Shufang Li, Kai Su, Yineng Bao, Zhanglong Zhang
With the increase of XLPE cable we used in power network, the corresponding technology of on-line monitoring becomes increasingly important. For improving the accuracy of on-line monitoring assessment of XLPE cable, we researched an assessment method and device of XLPE cable’s insulation state by Fuzzy...

Influence of Modulation Rate on Energy Efficiency for Relay-aided Transmission: Decode-and-forward Protocol

Rui Sun, Tao Wang, Fangfang Chen, QingHua Huang
In this paper, we investigate the effect of modulation rate on the energy efficiency of a two-hop communication system with the assistance of a half-duplex decode-and-forward (DF) relay, considering the given bit error rate (BER) and using the M-QAM modulation. First, we formulate the optimum model of...

Reliability Sensitivity Analysis of Rub Impact in Coupled Fault Rotor

Changqing Su, Fanyi Guo, Qikun Shi
On the basis of the dynamic equations of rotor system with pedestal looseness, rub impact and crack, the random response method of rotor system with pedestal looseness is researched. The method is based on stochastic perturbation theory and the Kronecker algebra, matrix calculus and random perturbation...

Design and Analysis of Electrical Automation Control System Based on Computer Technology

Xiaorong Wang, Taohua Ma
In recent years, our country has been a great leap forward development, the level of industrialization of our country's economic and social development is to continue to improve, and this and the electrical automation control system design and application is not open. The electrical automation control...

Realizing the Visualization of Plane Wave in Conductive Medium by MATLAB Graphics Technology

Lifen Li
The matlab programis usuarallyused to make simulation of electromagnetic distribution and the transmission of waves, which dynamiclyshows the propagation of waves. This article focuses on simulating the dynamic process of the propagation, reflection andrefraction of uniform plane wave in a different...

A Cover Type Hollow Extrusion Die for The Semi-hollow Al-profiles

Xuemei Huang, Rurong Deng
the determination methods of semi-hollow profiles were introduced.A new protective die structure was analyzed.and the selection of design parameters was introduced.the structure has a good effect on improving the strength and the life of the die and the quality of the products was showed that it is a...

Analysis of Temperature Field of High Speed Gear Box Based on ANSYS Workbench

Linghui Wei, Honghai Xu
Using the computational fluid dynamics, heat transfer theory and mechanics theory to analyze the internal heat source types and heat transfer path of high speed gear box, and establishing the steady-state heat transfer model. Based on the finite element theory, the finite element model of fluid solid...

Influence of the Thermal Parameters and the Structural Parameters on the Performance of Clutch Pressure Plate

Chao Jin, Yubing Gong, Shunying Pan, Defeng Zhang
The clutch pressure plate was easy to produce high temperature and axial thermal deformation under the extreme operation conditions, which results in clutch ablation, torque transmission capacity /slip faults. In this paper, a new channel clutch pressure plate was proposed that set a radial cooling channels...

Design of Large-diameter Pipeline Spreader and Finite Element Analysis of its Reliability

Sufen Zhang, Zhijie Li
In view of the problem that the large-diameter pipeline gets out of the spreader in the hoisting process due to the insufficient spreader strength and rigidity caused by the large hoisting acceleration, a kind of special pipe spreader is designed; 3D software is used to establish the geometric model...

Research on Anechoic Chamber Using Counter-phase Counteract and Rushing

Yingli Shao
A conventional muffler of internal combustion engine is mostly constructed as a mixture or combination of perforated ducts, baffle or perforated baffle, expansion chamber, etc., and the noise reduction is limited and backpressure is high hence the fuel efficiency is low. In order to solve the problems...

Electrochemical Performances of SDS-Modified PPy as Supercapacitor Electrode

Yong Chen, Guiying Kang
Conducting polypyrrole (PPy) is an attractive class of electrode material to be used in supercapacitor. However, the main chain of PPy prone to rupture in the process of charging and discharging, which results in premature attenuation and decreasing of specific capacitance. The SDS-modified PPy is prepared...

The Optimization of Multiquadric Function in Reverse Engineering

Dejun Liu
Reconstructing surface from the large scattered data is a ubiquitous problem in reverse engineering. Implicit surfaces reconstruction methods using Multiquadric function have recently attracted attention for its high precision and continuous order. This paper get the relative efficient proportion of...

The Research and Implementation of PLC in Tobacco Blending Control System

Xiaoyu Liu, Xianchong Guo, Yueqiu You
This paper expounds the selection of hardware, parameter Settings and software design in the PLC control system of the tobacco blending control system. It introduces the equipments composition, the control process, the method of flow control and the PID regulation of the tobacco blending technology during...

Collision Simulation on the Rear Protector of Truck

Xu Zhang, Kunlun Wu, Xiaohui Bai, Qihe Zhang, Da Song, Yiwen Zhang
Aimed to solve current collision problems between car head and truck rear, collision simulation of a novel type multistage rear protector is achieved, structure has been designed and optimized before. Based on conservation of energy theorem and regulations of dynamic collision test, dynamic explicit...

Supplier Evaluation Research of Automobile Industry Chain Service Platform based on AHP

Tiantian Shi, Wu Zhao, Xianjun Liu
Automotive industry chain service platform is to focus on a series of processes about the automobile industry's products, such as production, trading, evaluation, etc. Among this, the transaction mode and the suppliers evaluation system have high complexity. In view of the problems existing in the evaluation...

Application of Eddy Current Damping Effect to Design a Novel Magnetic Damper

Denghong Xiao, Xiaohong Zhou, Yong Gao, Dongliang Quan, Tian He
With advantages of no mechanical contact, vacuum compatibility, oil-free, and high reliability, an eddy current damper (ECD) is designed for use in space. To obtain perfect damping characteristics, a conductor as an outer copper tube and two stationary plates, and an array of axially magnetized ring-shaped...

Effect of Supplemental Light with Different Spectral LEDs on the Growth of Tomato Seedlings in North Greenhouse

Qiuying Zou, Jianwei Ji, Zhengming Li
The application of light emitting diodes (LEDs) for supplemental lighting is expected to increase quality of tomato seedlings in north greenhouse with less cost. Experiments were carried out to investigate the effect of supplemental lighting by LEDs with two different spectral qualities (blue, red and...

Fabrication and Characterization of 1200V 40A 4H-SiC SBD

Gang Chen, Yinglu Fang, Yun Li, Lin Wang, Song Bai, Ao Liu, Runhua Huang, Yonghong Tao, Zhifei Zhao
High voltage 4H-SiC Ti schottky junction barrier schottky (JBS) diode with breakdown voltage of 1200 V and forward current of 40 A has been fabricated. A low reverse leakage current below 1.02 × 10-4 A or 4.08 × 10-4 A/cm2 at the 25 and the reverse bias voltage of 1200 V has been obtained. The forward...

Fabrication and Evaluation of a 2000V-4A SiC Module

Xing Hu, Ao Liu, Gang Chen
A new 2000V-4A Junction Barrier controlled Schottky (JBS) diodes module has been fabricated using 4H-SiC. The module is composed of two SiC JBS diodes, and it is used for rectifying circuits. By adopting the proper SBD metal ,optimized structures and fabrication process, we succeeded in achieving good...

Wide Input Voltage Range Flyback Converter Design with Boundary Conduction Mode

Weifeng Zhang, Yanhui Zhang
A new design method of flyback switching power supply is proposed for wide input voltage application. The new design method is called the boundary conduction mode (BCM) design.The finished flyback converter can operate in very wide input voltage from 80V to 500V reliably with the proposed method. The...

Analysis of Resource Sharing Model of Civil-military Integration Based on the Evolutionary Game Theory

Xiang Sun, Jie Zhang, S. Xu
The paper based on “limited rationality” and “replication dynamics” ideas of evolutionary game theory, assumes that military enterprise and civil enterprise prefer to adopt a fixed strategy, establishes an evolutionary game model of resource sharing to analyze the key factors affecting the relationship...

Local Heuristic Genetic Algorithm for Discovering Community of Complex Networks

Yuquan Guo, Xiongfei Li
Community of complex networks has attracted much attention. For the problem, we propose a local heuristic genetic algorithm (LHGA). Mutation of LHGA is combined with local heuristic function from the perspective of networks dynamics and makes convergence rate of this algorithm expressively improved....

Research on the Insulation Monitoring Devices for DC Power System Based on the Technology of AC Injection

Baichao Wang, Qiang Yin, Xudan Guo, Songtao Li, Hao Yang, Ganglin Cai
In view of the problem of AC injecting into DC bus in the substation, the harm of AC injection is described, the characteristics of AC injection are analyzed, the detection technology of AC injection is researched, and the insulation monitoring devices for DC power system is designed. The kind of this...

Urban Forestry Management Information System Based on GIS - A Case of Tangshan City

Xiaohong Wang, Yajing Liu, Lina Guo
GIS technology was introduced in the information management system of urban forest, and Tangshan City urban forestry management information system is established. The system has the capabilities for data acquisition, storage, analysis and updating of different kinds of spatial information. There were...

Computer Electronic Control Technology and its Application

Taohua Ma
In the case of information technology, the application of computer in various industries is becoming more and more extensive, which provides many opportunities for the development of computer electronic control technology. At present, the computer electronic control technology need to involve the subject...

Magnetometer Calibration Algorithm Based on Analytic Geometry Transform

Yongjian Yang, Xiaolong Xiao, Wu Liao
Based on the analysis of Hard- and Soft- Iron effects of magnetometer’s errors, a tilted ellipse model for two-dimensional plane was formulated. According to the analytic geometry theory, a magnetometer calibration algorithm was proposed to calibrate the tilted ellipse into a standard circle by translation,...

Numerical Analysis of the Influence of Seepage on the Displacement Law of Different Overburden Strata

Yunping Wang, Deshen Zhao
The combination of different rock properties will make different effects of the Deformation and Failure in Overlying strata, this paper uses the ADINA finite element software to establish two-dimensional model to simulate analysis the four kinds of different overburden structures displacement field variation...

Water Absorption and FTIR Analysis of Three Type Natural Fiber Reinforced Composites

Xianyi Shao, Luju He, Li Ma
Surface treatment of three natural fibers including cellulose (CE), sawdust (SD) and wheat straw (WS) were carried out with triethoxysilane (AS), methacriloxy propyl trimethoxy silane (MS), and maleic anhydride grafted polypropylene (MAPP), respectively. Then the composites reinforced by these natural...

The Application of Information Literacy with Association Rules for a Safe Cyber Environment System

Chiachia Lin, Hungyuan Huang, Wentan Wu
The Internet is filled with opportunities for learning, communicating, and sharing information. It is a valuable resource for children and adults alike. Like any large community, however, the online world presents some underlying risks, especially for children. Parents need to be aware of some of the...

The Improvement Research of Commonly Used Gas Pot with Numerical Simulation

Xing Xue, Fengjuan Wang, Fenglan Wei
Traditionally, the pot used in cook-stoves have been constructed without paying much attention to their heat gains, while in the process of heat transfer with high temperature flue gas, it will lose a lot of heat. In sight of that, this paper introduces an improved pot with the incorporation of scientific...

Effect of Operation Environmental Uncertainties on Cargo Sway Characteristics of Tower Cranes

Mingxiao Dong, Haiping Dong, Bo Pang, Jiyong Wang
Tower crane operating environment uncertainties include lifting sway, wind load and air resistance and other factors. If we ignore these factors, it is difficult to accurately describe dynamic characteristics of the real system and difficult to realize automation of the tower cranes. This paper reveals...

A New Less-Loading Extrusion Technology of Mg Alloy Tube Workpiece

Qiang Wang, Zhimin Zhang, Yong Xue, Jianmin Yu
According to the exist problem in process&manufacturing of large-diameter magnesium alloy tube workpieces, pre-deformation of as-cast alloy and extrusion from hollow billet were developed. The hot compression experiment results show that pre-deformation of as-cast alloy is of advantage to decrease flow...

Microstructural Characteristics of Surface Composite on Titanium Alloy Fabricated via a Novel Method of Friction-Stir Nitriding

Bo Li
The microstructural evolutions and properties of the surface composite produced via the friction stir nitriding (FSN) method on Ti-6Al-4V alloy were investigated. Due to the optimized process parameters and suitable mixed gas proportion for a limited combustion reaction between Ti and N2, a composite...

Research on the Insulation Monitoring Devices for DC Power System Based on the Detection Technology of DC Bus to Grounding Capacitance

Zhijun Luo, Xiaodan Ren, Hao Yang, Ganglin Cai, Chu Qing, Yanling Luo
In view of the influence of grounding capacitance to low frequency signal injection method, a new detection technology is proposed based on DC bus to grounding capacitance. This method does not affect the normal operation of DC power system. The insulation monitoring devices for DC power system is designed....

The Nonlinear Analysis of Steel Tubular Columns Filled with Steel-Reinforced High-Strength Concrete

Xiurong Yang, Li Song
In order to study the mechanical properties of steel tubular columns filled with steel-reinforced high-strength concrete (STSRHC) under eccentric compression , this paper establishes the formula of bearing capacity , analyzes the effect of eccentricity, slenderness ratio, strength of materials and other...

Measurement Analysis of Electromagnetic Disturbance of the Secondary Sides of TA&TV in Local Control Cubicle of Dead Tank and Live Tank SF6 Circuit-breaker

Qiang Xu, Jianfei Ji, Jiayu Huang
The secondary circuit in substations is in a strong electromagnetic environment, and intelligent devices may be affected by electromagnetic disturbance signals. Meanwhile, with the local installation of intelligent devices, the electromagnetic disturbance of its working environment may be further strengthened....

Anti-Corrosion Design of Grounding Body in Power Transmission Line with Cathode Protection Method

Rui Liu, Peng Huang, Juan Mo
The grounding body in the power transmission line engineering is buried underground for long term, which will be eroded by soil environment. If it passes by the DC grounding pole, corrosion will be aggravated. Aiming at the 220kV line engineering in 500kV Dongpo substation and the 110kV line engineering...

A Multi Sub-band Sliding Detection Algorithm of Ship Shaft-Rate Electric Field Signal

Rui Cheng, Runxiang Jiang, Shenguang Gong
In order to effectively extracting out weak ship shaft-rate electric field signal immersed in strong ocean background noise, a multi sub-band sliding detection algorithm capitalizing on Empirical Mode Decomposition (EMD) with Fourth-Order Mixed Cumulant (FOMC) Diagonal Slice is proposed. Firstly, EMD...

A Preprocessing Method for Field Strength of Electromagnetism Spectrum Monitor Signal Based on EMD

Xiaopeng Gu, Shuguo Xie, Chao Wang
In the mobile field strength test including road testing and so on, because of the complexity of the city electromagnetic environment, the received field strength value is easy to be affected by Fading and therefore the result is not accurate. In this paper, A Preprocessing Method for field strength...

Application Analysis of Data Mining in Power Enterprise

Jian Tang
With the progress of the society and the development of information and communication technology, information system is rapidly expanding in various industries and fields. There are more and more data that these systems collect, process, and accumulate, and the growth rate of data volume is larger and...

Stiffness Analysis of Co-axle Sleeve Coupling with Fan and Laminations

Xuguang Min, Jun Fan, Ying Jiang
We propose a novel compact coupling for diesel generator sets, in which the coupling laminations and the generator fans share one bushing, thereby reducing the overall axial length of the generator set. The maximum stress and elastic deformation during operation were determined by finite element analysis...