bluuebunny/crossref_metadata_2025 huggingface dataset:
Purification of Refractories Andalusite of High Quality
Authors: Jin Jun Xun , Gao Hui Min , Guan Jun Fang , Feng Xiao Fei
Published: October 2013

It is a developing trend for the refractory materials industry that producing refractories using the andalusite ore with minute amounts of titanium. The tests were conducted with an ore sample by a high gradient magnetic separator and a mechanical flotation cell. The isoelectric point of the andalusite ore was found to be pH 5.9. Petroleum sulfonate was found to be an effective collector for andalusite flotation. 52.08% Al2O3is produced with 52.92% andalusite recovery by grinding, desliming, high gradient magnetic separation and andalusite flotation.
Electroplating Sludge Metal Recovery Technology Resources Research
Authors: Wu Hai Xia , Lu Chen , Kang Kai , Xu Yan Hua
Published: October 2013

The electroplating sludge contains a variety of heavy metal elements, is an inexpensive and renewable resource. This situation on the domestic electroplating sludge conducted a preliminary investigation, reviewing of domestic and foreign electroplating sludge metal recovery technology research, and currently more processing techniques were evaluated.
Research on CRTSIII Ballastless Track Slab Cracks of High-Speed Railway
Authors: Li Xiang Min , Zhang Suo Yan , Liu Jun
Published: October 2013

At present ballastless track has been widely applied to railway line for passenger in our country, therefore it has broad prospect. Cracks in ballastless track slabs are inevitable in the construction and operation of high-speed railway. Based on comprehensive investigation of documents, and taking cracks in ballastless track slabs as the main object, systematic and deep research has been done within this paper. The main research contents are as follows: First of all, the structure characteristics of CRTSIII ballastless track in high-speed railway are briefly introduced; Secondly, the paper mostly introduces the impacts what cracks make, the characteristics of cracks and how they form. Subsequently the paper introduces what are made to prevent cracks.
Application of Set Pair Analysis in the Material Clustering
Authors: Yang Ya Feng , Yang Ai Min , Zhang Huan Cheng
Published: October 2013

Based on the Set Pair Analysis theory and fuzzy set, the traditional clustering methods were taken into account from the characteristics of the forward, reverse and uncertain factors. A new cluster analysis method was proposed which allows more flexible clustering analysis. A case study in the materials clustering was carried on for the consumers to look for the most benefits in line with their own requirements.
Processing Stability Analysis of Wire Cut Electric Discharge Machine with High Speed
Authors: Wang Jing , Zhou Ming Gui
Published: October 2013

In this article, unstable factor analysis is done in Wire cut electric discharge machine with high speed (WEDM HS), which focus on effect of processing Stability from electrical processing parameters, machine parameters, electrode wire, cutting fluid and conductive block, and how to adjust and excluding factors in order to enhance WEDM processing stability ,ensure machine parts surface quality, dimensional accuracy and processing efficiency.
Imbalanced Data Classification Based on Clustering
Authors: Li Hu , Zou Peng , Han Wei Hong , Xia Rong Ze
Published: October 2013

Many real world data is imbalanced, i.e. one category contains significantly more samples than other categories. Traditional classification methods take different categories equally and are often ineffective. Based on the comprehensive analysis of existing researches, we propose a new imbalanced data classification method based on clustering. The method clusters both majority class and minority class at first. Then, clustered minority class will be over-sampled by SMOTE while clustered majority class be under-sampled randomly. Through clustering, the proposed method can avoid the loss of useful information while resampling. Experiments on several UCI datasets show that the proposed method can effectively improve the classification results on imbalanced data.
Non-Linear Three-Dimensional Finite Element Analysis of Some Extremely Deep Foundation Pit Support
Authors: Yu Zhen Xi
Published: October 2013

In recent years, with the enhancement of overall national strength in China, the computer simulation technology has been developed rapidly and widely applied to engineering construction. Particularly, investment proportion of the technology in deep foundation pit engineering is immense. Yet affected by national conditions in China, the construction and application of deep foundation pit engineering have many extensive factors. It also results in insufficient vigor of finite element analysis of deep foundation pit support construction. In this way, construction problems arise frequently under the condition that there exist buildings around. With some deep foundation pit support engineering, the thesis conducts simulation analysis of the engineering through the technology of nonlinear three-dimensional finite element.Project profile
The Pipe-Roof Grouting Method in the Tunnel Water-Rich Slice Excavation Reinforcement Effectiveness Research
Authors: Zhao Li Cai
Published: October 2013

A speed-railway double-track tunnel 1# slant hole L7 slices are extremely rich water,the weathering depth to surface 270m, layer thickness of about 25m, the main filling material for decomposed granite clip diabase, diorite, sand-like and earthy.When tunnel excavation,extremely vulnerable and water burst mud.Using pipe roof curtain grouting method reinforcement after, The entire decency granite and the diorite-porphyrite obtain reinforce effectively push densely, drills takes in the core type to have the massive cement blocks, shuts off the water the function to be good, had guaranteed effectively excavates the section the construction progress.This article used the three dimensional finite element method to construct various stages to this tunnel through the L7 slices region pipe roof grouting method to conduct the analysis research, According to the analysis results timely and reasonable arrangements for excavation footage, research results can provide a reference for similar projects.
Prediction of Characteristic Parameters of the Surge by Landslides
Authors: Ji Hong , Si Hu , Xia Tao
Published: October 2013

Instability of landslides will lead to high-speed of rock and soil into the water, sparking a huge surge, causing significant harm to residents and infrastructure of coastal areas. With regard to the surge by landslide, the climbing height and the dynamic pressure are dominant characteristic parameters of concern, which influence the scope and extent of damage. The paper selected five important factors which influence characteristic parameters, that are time into water, sliding volume, angle into water, climbing angle, and water depth, based on simulation and MATLAB, established the BP neural network model of the characteristic parameters. Through training the network at various hidden node, the optimal training network has been gained, characteristic parameters at four groups of sample data have been predicted and verified respectively, and the best forecasting network can be selected as the predicting network.
Preparation and Crystal Analysis of V-Type Amylase-n-Octanol Complex
Authors: Liu Yan Qi , Liu Qi Ling , Li Shuang
Published: October 2013

In the EtOH/H2O system, by means of heating reflux, V-type amylose-n-octanol complex which B-type microcrystalline starch made a combination with n-octanol was prepared. Through single factor experiments, the effects of the starch/n-octanol ratio, the ethanol concentration, cooling rate, holding temperature and holding time on the crystallinity of the V-type amylose-n-octanol complex have been investigated. The X-ray diffraction was used to analysis the crystal structure of complex. The synthetic conditions were as follows: the starch / n-octanol ratio 10:1, the ethanol concentration 35%, holding temperature 80°C, holding time 60min and cooling rate 5°C/h.V-type amylose-n-octanol complex was prepared under the condition, the crystal structure of complex was V type and the crystallinity reached 61.29%.
Effect of the Packing Material and Temperature on the Quality Characteristics of Dehydrated Carrot during Storage
Authors: Zhao Xiao Xiao , Wang Dan , Ma Yue , Zhao Xiao Yan
Published: October 2013

In order to maintain quality of dehydrated carrot during storage, the effect of storage temperature and packing material on dehydrated carrot was studied. Quality changing of dehydrated carrot packed in aluminum foil bag (AF) and high-density polyethylene (HDPE) at low temperature or room temperature were evaluated during storage. The results showed that the quality of samples in four packing methods had a reduction. The samples in AF underwent the least reduction in quality. The thermal degradation kinetics of carotenoids in dehydrated carrot was followed the first order thermal degradation kinetics reaction. The retention of carotenoids in AF was higher than that in HDPE. The k was the least. The value of non-enzymatic browning (NEB) increased. Samples in HDPE had lower quality than the samples in AF.
Treatment of Micro-Polluted Surface Water by Ballasted Flocculation and its Floc Structural Characteristics
Authors: Su Zhao Yang , Li Xing , Yang Yan Ling , Zhou Zhi Wei , Song Wu Chang , Sun Shao Hua
Published: October 2013

In current paper, compared to the conventional coagulation, micro-sand (MS) and magnetic powder (MP) ballasted flocculation were investigated during the treatment of micro-polluted surface water by simulating ActifloTM and SiroflocTM process. Under an optimized operation condition, the optimal turbidity, CODMnand TP removal, 94.5%, 75.1% and 93.0%, respectively could be achieved by the MP process. In further research, pollutants removal efficiency at various settling time (5, 10, 15, 20 min), flocs two-dimensional fractal dimension and average size were simultaneously studied and the relationship among them was also discussed.
Pilot-Study of Micro-Polluted Water Treatment by UF Membrane at Different Fluxes
Authors: Lu Shu , Li Xing , Tian Jian Yu
Published: October 2013

A pilot-scale ultrafiltration (UF) experiment was conducted to determine the effect of membrane flux on pollutants removal performance and membrane fouling. The study results showed that with the increase of the membrane flux (20, 30 and 40 LMH respectively), the removal of turbidity, CODMnand UV254were slightly decreased. Every 10 LMH more flux increased, the UV254removal was reduced double. The growth rate of the trans-membrane pressure (TMP) became faster when the membrane flux increased, and 20 LMH could be considered as the critical flux in the raw water quality and working conditions. Membrane fouling rate could be delayed by air bubbling and backwashing. The larger the membrane flux was, the more TMP could be reduced. Furthermore, the effect of delaying the membrane fouling by backwashing was better than by air bubbling.
Research of the Application of Denitrifying Phosphate Removal Bacteria in the A2/O Process
Authors: Zhao Meng , Bing Shuai , Li Xue Song , Xuan Meng Ru
Published: October 2013

As a new type and high efficiency and low energy consumption one in biological denitrification and phosphorus removal technology, denitrifying phosphorus removal has become a hot topic in the research field of the water treatment technology. In this technology, denitrifying phosphate removal bacteria (DPBs) plays an important role. In each process stage of an A2/O process, denitrifying phosphorus removal bacteria (DPBs) plays different function. Combining with theory of the A2/O process, the function and main influence factors of denitrifying phosphorus removal bacteria (DPBs) are studied, and the prospect about DPBs is proposed.
Fly Ash Autoclaved Aerated Concrete Self Thermal Insulation Building Envelope Energy Saving Research
Authors: Bai Li , Li Ying , He Shu Ming
Published: October 2013

This article takes an actual public building in Changchun City as an example to field test the heat transfer coefficient of fly ash autoclaved aerated concrete exterior wall. By analysis the field test value, theory calculation value, and the maximum value of the design standard for energy efficiency of public building (GB50189-2005), I concluded that fly ash autoclaved aerated concrete self-thermal insulation building envelope exterior wall fully meet the energy-saving standard requirements, which does not need additional insulation material. And further as heat transfer coefficient of wall test and energy saving standard maximum heat transfer coefficient as the main parameter, I used DeST-c software simulation to calculate the building energy consumption. The simulation results showed that the heating energy consumption of fly ash autoclaved aerated concrete self-thermal insulation building envelope is 16.32% lower than the standards required value, which has the advantage of energy saving property.
The Application Research of the Chinese Traditional Houses in Modern Building Energy Efficiency Design
Authors: Li Jie
Published: October 2013

High energy consumption has aroused serious consideration in the construction industry and energy industry. This article attempts to explore the implementation of environmentally friendly energy concept. It suggests that we should not only "look out" - to introduce foreign advanced environmental concepts to study, but also "look inward"- to study energy saving measures from the pattern and style of traditional architecture, such as adapting to the climate, obtaining materials from local sources, adjusting measures to local conditions, melting into the environment, paying attention to the group effect, etc.
External Windows Selection in Hot-Summer and Cold-Winter Areas
Authors: Li Da , Zong Yi
Published: October 2013

Building energy conservation is a research hotspot at present. In this paper, using energy simulation software DesignBuilder, we analyzed the influence of different external window materials on energy consumption of residential buildings and finally studied the energy saving rate and economical efficiency. The economical efficiency was analyzed from two aspects: the difference of net present value and the pay back period. The result shows that Low-e insulating glazing is good at both energy-saving potential and economic benefits. This paper provides a basis for the external window selection in hot summer and cold winter areas like Wuhan.
Determination of Gas Pipeline Soil Overburden Compaction Multiplier in CAESAR II
Authors: Chen Li Qiong , Han Xiao Yu , Wu Shi Juan
Published: October 2013

Backfill is needed after putting pipes in the trench and the stress changes with the change of overburden compaction multiplier. We use CAESAR II to do stress analysis and draw the reasonable overburden compaction multiplier on a gas pipeline. By changing the soil overburden compaction multiplier and comparing pipes mean stress value, when the overburden compaction multiplier is set to 3, operation, primary and secondary stress ratio would reach minimum. And with the increase of overburden compaction multiplier, the stress ratio increases slightly.
Research and Application of the Whole Process of Line Loss Management Platform
Authors: Wang Qian , Niu Yu , Meng Lu , Chang Jiang
Published: October 2013

Responding to the state's call of "energy-saving" and enhancing the level of line loss management, Henan Electric Power Company developed Henan line loss management system, after several years of exploration and Loss Management experience accumulation. The loss management system can realize power loss measurement, on-line theoretical computation of line loss, line loss analysis, line loss policy and so on. These functions can support the whole process of Henan line loss management.
Improvement of Photovoltaic Module for Increasing Energy Conversion Efficiency
Authors: Phayom Warachit
Published: October 2013

For increasing energy conversion efficiency of PV module, this study was divided to two experiments. The first experiment was to investigate optimal tilt angle of PV module from 0-35° from horizontal plane in facing south for using in Udon thani Province and neighbouring in Thailand. The second experiment was to decrease PV module temperature and to determine appropriate cooling system by using water and small spray nozzles between front and back PV module. The results found, conversion efficiency was high during 15°-25° from horizontal plane for tilt angle in facing south, especially at 25° in whole year. Using thin film by spray nozzles at the front side was higher open circuit voltage and energy conversion efficiency than back side, with 6.06% of increasing open circuit voltage and 1.93% of increasing energy conversion efficiency when compared with no cooling system, due to can thoroughly distribute water on surface area and easily install.
Energy Prediction of PV Systems with Sun Tracking
Authors: Cao Meng Nan , Qiu Ying Ning , Wang Hao
Published: October 2013

The energy yield of PV system with different material, declination angle and land covering ratio are presented. Comparisons are made between two Chinese cities, Beijing and Nanjing. Shading effects are also investigated for the PV systems energy yield calculation. It shows that by neglecting the losses due to weather and the temperature effects, for the location with higher latitude (such as Beijing) the PV system installed with double junction solar cells (micromorph silicon) is predicted to have lower Performance Ratio than that with mono-crystalline silicon and multi-crystalline silicon. An optimum row spacing of a PV system should be considered for limited occupation area. The criteria above are important for large scale PV system design and its efficiency maximization. The simulation is useful to predict the power fluctuation delivered by PV system due to the spectral, seasonal variation and geometry difference.
Characterization, Dissolution and Solubility of Mimetite[Pb5(AsO4)3Cl] at 25°C
Authors: Huang Yan Hua , Zhu Zong Qiang , Zhang Zong Lan , Zhu Yi Nian , Tan Liang Liang , Dai Liu Qin , Wei Cai Chun
Published: October 2013

Mimetite [Pb5(AsO4)3C was firstly synthesized by precipitation and characterized by various techniques, and then the batch dissolution experiment was conducted at 25°C and different initial pHs. XRD and SEM analysis indicated that the solid was indistinguishable before and after the dissolution. For the dissolution at the initial pH=2, the aqueous arsenate and lead concentration decreased firstly with time and reached a steady state after 480h. For the dissolution at the initial pH=4 and 6, the aqueous arsenate and lead concentrations varied between 0-0.0005mmol/L and 0-0.0008mmol/L, respectively.
Modeling of Natural Ventilation in Built-in Photovoltaic-Trombe Wall
Authors: Xu Xiao Wei , Su Ya Xin
Published: October 2013

The natural ventilation in a novel built-in photovoltaic-Trombe wall (BiPV-TW) was numerically simulated by CFD method. The effect of solar radiation and channel width on the airflow pattern and ventilation rate was analyzed. Results showed that the solar radiation and channel width influenced the ventilation rate remarkably. As the solar radiation increased, the ventilation rate increased. As the channel width increased from 0.1m to 0.4m, the ventilation rate monotonously increased. However, when the channel width exceeded 0.5m, the reverse flow was formed in the tope zone and the ventilation rate decreased. A maximum air volume flow rate was achieved when the channel width was approximately equal to 0.4m in a 3m tall model.
Size-Controllable Synthesis of Worm-Like SiO2 Microspheres Using Dodecylamine as Direct Agent in Ethanol/Water Solvent System
Authors: Zhang Xue Ling , Zhu Wei Yao , Cao Meng Jing , Cai Qiang , Wang Xiao Feng , Lou Yu
Published: October 2013

Size-controllable synthesis of worm-like microporous monodispersed SiO2microspheres using dodecylamine (DDA) as direct agent in ethanol-water solvent system was firstly developed by varying the proportion of reactants. The products were characterized with scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), small angle X-ray diffraction (SAXRD) and nitrogen adsorption. The results showed that the SiO2microspheres with size of 50nm~1um could be prepared by varying the molar ratio of water/ethanol when the molar ratio of (DDA)/tetraethyl orthosilicate (TEOS) is 0.4 and the concentration of TEOS varied from 0.138 to 0.248mol/L. This method is simple and convenient, the prepared SiO2microspheres are monodispersed and uniform, the worm-like pore size is about 1.4nm. The size controllable silica microspheres could be used as an excellent additional medium to alter rheological behavior of fluid after surface modification..
Intelligent Vehicle Based on Solar Power Generation and Semiconductor Refrigeration Air Conditioner
Authors: Liu Qiang , Yang Shu Chen , Wang Jun
Published: October 2013

To solve the car in the sun after the problem of high temperature inside the car, to make the intelligent vehicle based on solar power generation and semiconductor refrigeration air conditioning, the solar panels convert solar energy into electrical energy, in our production based on ARM architecture - M3 processor core LM3S615 micro controller of solar power controller under the control of the converted to battery power, battery supply power to refrigeration semiconductor under the controller control of semiconductor refrigeration elements side pick up the car refrigeration is reduce the interior temperature, heating surface pickup in vitro heat pipes for heat transfer to the outside of the car, and the car is equipped with temperature sensors to detect the temperature inside the car can, when the temperature reaches a set temperature refers to the controller control battery supply power to refrigeration piece to reduce the temperature inside the car, when the temperature is lower than a set temperature controller to control battery direction to the cooling power to improve the temperature inside the car, achieve the result of intelligent temperature control of the car, to reduce pollution, save energy and has strong practical value.
Hybrid Producer Gas Using Biomass Combined Thermoelectric
Authors: Maneewan Somchai , Punlek Chantana , Chindaraksa S. , Charoenwat R. , Lertsatitthanakorn C.
Published: October 2013

The hybrid Biomass gasification-Thermoelectric system (BG-TES) is full renewable energy system. Hybrid system was integrated with biomass gasifier and thermoelectric power generation. To illustrate, the rice husk was used to be the alternative fuel in a biomass gasifier and TE generated electric energy for air flow into gasification system. BG-TE system was developed and analyzed in variations of air flow rates in order to show the efficiency of the system. In this study, the different air flow rates were tested of 2.03x10-3, 2.15x10-3 and 2.44x10-3 m3/s with using rice husk 1.2 kg per once operated. The optimum operation condition was considered by comparing between thermal efficiency and air flow rates of BG-TES. The result has been shown that 2.435 x 10-3 m3/s is optimum flow rate for gasification system. It could be generating maximum producer gas which system was operated about 40 minute. Biomass gasification system had 19.43% of thermal efficiency Whereas the conversion efficiency of the TE power generator was around 2.42%. According to the biomass energy, the rice husk is not only the alternative fuel but it is also abundant in remote area. Therefore, the rice husk is one of the promising fuels that can be used to replace the LPG in the lacking power area. The rice husk at one operation was replaced LPG about 0.2 kgLPG. In conclusion, BG-TES using rich husk is the alternative system that can be suitable for lacking power area.
Wind Power Prediction Model Based on the Combination of Gray Theory and Time Series Forecasting Methods
Authors: Han Xiao Juan , Zhang Xi Lin , Chen Yue Yan , Meng Fang Yuan
Published: October 2013

Accurate wind power predicting is helpful for the dispatch and safety operation of grid, so as to increase wind power penetration, Two representative prediction models, based on gray theory and time series forecasting method respectively, were selected, the farm measured data were input to the models and their own prediction results were obtained respectively. Finally, the prediction results of the combined model were compared with the two individual models, verifying the feasibility of the combined model to wind farm generation capacity forecast. It is concluded that the combined forecast model can predict more accurately than the individual forecast model.
Study of Solid Amine CO2 Sorbents Based on the Modified Fly Ash
Authors: Ji Ying Lu , Song Hui Ping , Cheng Fang Qin , Zheng Nan , Wang Xu Ming
Published: October 2013

In this paper, coal fly ash was modified by the hydrothermal synthesis method based on sodium hydroxide solution, and then was macerated by ethanol amine. Then we obtained the solid amine adsorbents used to absorb CO2. The modified fly ash was investigated by scanning electron microscope (SEM) and the specific surface area analyzer (BET) for the microstructure and specific surface area. Then, the solid CO2 adsorbent was analyzed by fourier transform infrared spectrometer (FT-IR) and thermal analyzer (TGA) in CO2 atmosphere. Results showed that modified fly ash generated many kinds of zeolite material by the SEM and the BET analysis, greatly increasing the specific surface area, improved the adsorption capacity. FT-IR analysis that the surface of solid amine CO2 adsorbent with amine groups; TGA analysis that compared with the original fly ash, CO2 adsorbent by this paper made has the capability of adsorption of CO2.
Dynamic Analysis of Transient Voltage for Distribution Network with the Consideration of Wind Power
Authors: Tian Chun Guang , Wang Tian Yi , Cai Guo Wei , Yang De You
Published: October 2013

Distributed wind power will bring great impact on transient voltage of distribution network. Based on the characteristics of distributed wind power, this paper presents a doubly-fed induction Generator with four wind speed model and Crowbar protection model in DigSILENT/PowerFactory. The analysis is carried out for a test distribution system representative of the Benchmark 20kv grid. Firstly, this paper respectively provide simulation results showing the effects of distributed wind power on the dynamic voltage in wind fluctuation and a faulted system. Then, a static synchronous compensator (STATCOM) is used to improve the voltage profile of the distribution system.
Research on Low-Wind-Speed Wind Power
Authors: Song Hai Hui , Wang Jian Jun , Hu Zhi Hua , Zhou Jin
Published: October 2013

For high-wind-speed wind power development and problems, propose development and application of low-wind-speed wind power (LWSP). Analysis of the characteristics of LWSP , advantages and necessity of development and application of it. Research the key technologies of LWSP development. It ultimately lay the foundation for research, development and application of LWSP technologies.
Based on Scene Classification Method of Wind-PV Output Coupling Mechanism
Authors: Luo Qing , Chao Qin , Wang Yi Bo , Luo Jian Chun , Liu Gai Qian
Published: October 2013

Load tracking and output forecast error are less researched in wind and photovoltaic (PV) systems synthetic of output coupling power in present time. This paper using the technology of data mining of according to the wind and PV output characteristics with different scenario data partitioning method to the Wind and PV resource rich region of the actual wind power and PV output data divides the scene under the typical scenario data of division of Wind and PV complementary output coupling characteristics are analyzed and studied the mechanism of synthesis of output tracking system load characteristics and improve the output prediction error problem. Studies have shown that Wind and PV complementary synthetic efforts to a certain extent, reduced the coupling characteristics of output volatility, the system load tracking degree reached 14.1%.
Short-Term Wind Power Prediction and Error Analysis
Authors: Ma Rui , Wang Ling Ling , Hu Shu Ju
Published: October 2013

The prediction accuracy of wind power is important to the power system operation. Based on BP neural network used to forecast directly and time-series method used to forecast indirectly, the output wind power prediction of 4 hours in advance was studied in this paper. Simulation results showed that the performance of direct prediction is better, and the reason for that was analyzed in the paper. Finally, error analysis of prediction was researched. Comprehensive evaluation of prediction error which contains horizontal and longitudinal error evaluation was proposed.
Study on Short-Term Wind Power Prediction Model Based on ARMA Theory
Authors: Li Wei , Zhang Hong Tu , An Ting Ting
Published: October 2013

At present, the difficulty of wind power integration has resulted in a large number of wind curtailment phenomena and wasted a lot of renewable energy. Due to the significant instability, anti-peak-regulation and intermittency of wind power, wind power integration needs an accurate prediction technique to be a basis. ARMA model has the advantage of high prediction accuracy in predicting short-term wind power. This paper puts forward the method for short-term wind power prediction using ARMA model and carries out empirical analysis using the data from a wind farm of Jilin province, which shows the science and operability of the proposed model. It provides a new research method for the wind power prediction.
A Review: Absorption of Heavy Metal Ions by Modified Bamboo Charcoal
Authors: Zhang Kai Li , Xie Li Wei , Huang Li Hong , Zhu Zong Qiang , Tan Liang Liang
Published: October 2013

Compared with the treatment of heavy metal waste water by bamboo charcoal and modified bamboo charcoal. The mainly types and methods of modified bamboo charcoal adsorption of pollution water is introduced. some important factors that effecting the bamboo charcoal and modified bamboo charcoal adsorption of heavy metal pollution were described in detail, summarizes the desorption method of the specific adsorbent and adsorption mechanism.
Research on Mathematical Model of Nuclear Power Plant for Different Processes in the Power System Simulation
Authors: Huang Yue Feng , Xu Zheng
Published: October 2013

A relatively simple model of nuclear power plant was established based on previous detailed models, which can be used in medium-term and long-term power system simulation. Based on the established model, a much simpler model was developed which can be used in transient stability simulation.
Calculation of Lighting-Induced Overvoltage on Transmission Line Based on Simplified Wagner Field Cancellation Method
Authors: Zhang Xun , Zeng Hua Rong , Li Yan Ling , Liu Hua Lin , Zhou Hai , Huang Jun Kai
Published: October 2013

Based on Wagner field cancellation method, the paper presents a simplified method to calculate the induced overvoltage on transmission lines excited by lightning striking on tower. Firstly the square-wave response of lightning-induced voltage is calculated, and then the responses produced by other excitations can be calculated by Duhamel integral. This method can reflect the time-varying characteristic of the induced overvoltage. The simulation results show that the amplitude of lightning current and the length of upward leader have greater impacts on the induced overvoltage.
The Study of Grounding Grid State Parameter Measuring System Based on IPC Platform
Authors: Chen Wei , Zhang Dan Dan , Zhou Wu , Hu Jian Ming
Published: October 2013

It is well known that state detecting and evaluating of grounding grid in substation especially defect diagnosis is highly necessary for power system. To detect and evaluate the state efficiently, relevant parameters should be obtained exactly as existing standards all put great emphasis on different parameters should be well-considered. This paper proposed a grounding grid parameter measuring system composed of three devices, through which grounding grid resistance, step voltage, contact voltage under alternating current, connection resistance under direct current and surface potential under square current are available, square current is present in this paper for defect diagnosis . IPC is utilized as the superior computer in this system together with digital touch screen that directly lead to larger storage capacity, simple operation and more friendly convenience for communication between human and computer compared with traditional SCM system. Through experiments it is proved to be accurate ,reliable and repeatable, especially effective for square current devices in defect diagnosis. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.
Comfort Fusion Evaluation of the Indoor Thermal Environment Based on KPCA and Genetic Neural Network
Authors: Zhang Lian , Hu Xiao Qian , Li Shan
Published: October 2013

For the problem of complicated nonlinear relationships among the parameters of heat comfort index PMV, KPCA (Kernel Principal Component Analysis) is used to do the feature extraction. On the basis, KPCA+BP and KPCA+GNN are utilized to forecast the heat comfort level. Simulation results show that KPCA can extract the nonlinear uncorrelated sample data, and KPCA+GNN are evaluated best with high accuracy.
State-of-the Art and Perspectives of Superconducting Generator
Authors: Zhao Chao Hui , Li Jin Cai
Published: October 2013

Based on low temperature superconducting (LTS) & high temperature superconducting (HTS) material classification, the superconducting generators can be divided into LTS generators and HTS generators. The research status and characteristics of superconducting generators are summarized; and several topological structures of superconducting generators are introduced. Compared and studied traditional rotating machine with superconducting rotating machine, pointing out the present superconducting generators bottleneck problems. Finally, the prospects of the development of superconducting generators are described.
Lamps and Lanterns Analysis in Highway Illumination System
Authors: Jia Xu , Zhu Li Wei , Cui Han Jing
Published: October 2013

Nowadays the main highway illumination facilities are HPSL (high pressure sodium lamp). With the technology development of LED (light emitting diode), it is used for highway lighting become possible gradually. This paper compared features of HPSL and LED, meanwhile give a deep discussion.
Study on Dynamics Analysis and Application of Vibration Modal Testing of Suspension Cable Structure Based on MEMS Sensor
Authors: Yang Yao En , Wang Qing Min
Published: October 2013

The large span suspension structure is easy to generate larger vibration due to its smaller stiffness. For this problem, a finite element modal analysis method that considers the effect of initial pre-stress is proposed. The finite element model of the structure is established by using Link10 unit of the finite element analysis software ANSYS. Then the first four order natural frequency and vibration mode under different initial pre-stress is solved by the subspace iterative method. And the experimental test system based on MEMS sensor is designed to analyze the layout of test points and exciting vibration mode of the structure. The test system measures the inherent frequency and the first two order vibration mode under the action of different pre-stress. The results show that the numerical analysis results are basically consistent with the experimental results and the inherent frequency of the structure distributes in the plexus intensive form. And the inherent frequency of the structure is related to the pre-stress. The bigger the stiffness of the structure, the greater the inherent frequency is. It proves that the theoretical analysis results are correct and the experiment test system can be used in the structural dynamic test.
Research on New Energy Integration Capacity in Power Grid
Authors: Jia Jun Chuan , Zhao Bing , Luo Xu Zhi
Published: October 2013

Due to their high inter-temporal variation and intermittence, large-scale integration of the new energies, such as wind power and photovoltaic power, will pose great challenges to the safe and stable operation of power system. Analysis on gird stability and adaptability before integrating the new energy should be made. The paper investigates all kinds of restrictions and assesses each constrained capacity from the perspective of steady-state and transient voltage, frequency stability, cross-section transmission limit and peak load regulating capacity, respectively. Then the comprehensive evaluation on the capability to accommodate new energy for a power grid is accomplished. Take a practical grid for example, its accommodation capacity for new energy is calculated based on the above-mentioned method, which provides a theoretical basis for the grid to accommodate new energy and planning and construction of new energy.
Droop Configuration and Operational Mode Setting of Battery Energy Storage System in Primary Frequency Regulation
Authors: Lei Bo , Li Xin Ran , Huang Ji Yuan , Tan Shao Jie
Published: October 2013

In primary frequency regulation (PFR) using battery energy storage system (BESS), the droop configuration for BESS needs to be considered thoroughly. This paper modified the traditional droop configuration method by considering more BESS`s internal nonlinear constraints and then proposed a variable droop strategy for operation. By doing this, a modified BESS model for PFR was constructed. Finally, the validity of BESS droop configuration method in this paper is testified with a three-area equivalent model based on the data of actual grid. The results show that variable droop strategy is more suitable for PFR than fixed traditional one.
Water Ecosystem Services and their Value — A Case Study in Luan River Basin, North China
Authors: Hao Cai Lian , Yan Deng Hua , Qin Tian Ling , Zhang Cheng , Yin Jun
Published: October 2013

Under a scenario of global climate change, the water ecosystem services of Luan River basin have attracted considerable public attention. In this paper, the term of water ecosystem services is described as Green water and blue water formed from the water cycle process to provide the conditions and utility for maintaining the structure and process of forest, grassland, wetland, lake, river ecosystem. In this study, we estimated the magnitudes and economic values of the water ecosystem services in Luan River basin. The economic value of water ecosystem services in Luan River basin was estimated to be 778.32×108Yuan in 2000. The ratios of the economic values of water direct ecosystem services were 5.89%, and rest 94.11% of the all monetary value was water indirect ecosystem services. Among the water ecosystem services indicators we estimated, fruit, timber, fishery products, Fresh water supply, Hydropower and recreation were measured in the social economic system, about 59.81% of the monetary value of water ecosystem services is measured to reflect water resources ecological value.
Research and Development on the On-Line Monitoring System of Cable Line Arrester
Authors: Wang Zhen Hao , Zhang Xi Lin , Han Xiao Juan , Wang Chao Bin , Pang Dan , Gu Huai Guang , Li Yang
Published: October 2013

The research and development on the on-line monitoring system of cable line arrester is discussed from system composition, main functions of system, main features of the system and system development tools, and the practical experience of the construction indicates the necessity and effectiveness of the method.
Research on Wind Power Integration Capacity of Hydro-Thermal Wind Power System with Energy Storage System
Authors: Li Feng , Zhang Li Zi , Wang Yun Yun , Feng Jun Shu
Published: October 2013

With the fast development of clean energy in China, the conflict between limited peak load regulation capability and the increasing installed wind power capacity became more and more obvious. Two different wind power integration dispatching modes were proposed in this paper, meanwhile, the wind power integration capacity and system economy under different scenarios, which have different wind power penetration and energy storage system (ESS) capacity, were also analyzed. As indicated in the example analysis, the ESS can significantly enhance the wind power integration capacity; and the economical wind power integration dispatching mode is the most suitable choice for the power grid in wind-rich area.
Ground Tests of Hybrid Electric Power System for UAVs
Authors: Li Yan Ping , Liu Li , Zhang Xiao Hui , Shi Shang Tao , Guo Chang Wei
Published: October 2013

As the aviation has realized the seriousness of pollution and emission issues, people have taken efforts to use renewable energy on planes or UAVs. This paper focused on the applications of solar and hydrogen energy to UAVs. A hybrid power system, consisting of solar cells, fuel cells and lithium batteries, was discussed. To achieve the hybridization of power sources, a prototype of a power management unit (PMU) was fabricated. After the installation of a test system for synthesizing power sources, PMU and load, a series of ground tests were executed to verify the mathematical model of lithium battery and the reliability of the hardware. Ground data confirmed the feasibility of hybrid power system.
The Design of Remote Monitoring System for Indoor Electrical Safety
Authors: Ding Jian Yang , Zhou Lei , Jiang Chen , Jiang Chen , Liu Xiao Ju
Published: October 2013

Causes of electrical fires have great variety. In view of the main, this paper explores the algorithm of fault arc detection and the method of electric appliance identification, and briefly shows the overall design of the monitoring system. The judging threshold of fault arc can be carried out through building an AR model of normal current signal and calculating the coefficients of the AR model with the third-order Burg algorithm. The existence of fault arc can be determined by the squared Euclid distance between the threshold and the coefficients of current signal. The pattern recognize based on the Fourier series of current signal as characteristic values can be used as Electrical appliances identification methods combined with the power of appliance.
Compensation for Steam Humidity Measurement System of Resonator
Authors: Wang Hong Yun , Wang Zhu Lin , Guo Xi Wei
Published: October 2013

There are many factors affected the result of humidity measurement in the resonator wetness steam measuring system .The away of frequency that aroused from the heat expansion of resonator ,the changing of resonance frequency because the thickness of water membrane,errors from the part of frequency measuring are analyzed ,and the compensation measure is introduced separately.The measuring precision of steam humidity can be cffectively increased.
A Novel Method for Determining Harmonic Emission Responsibilities at the Point of Common Coupling
Authors: Zhu Xiao Jun , Li Xiang , Fu Bin , Fu Ang , Chen Min You , Li Feng
Published: October 2013

This paper presents a novel method for determining the harmonic emission responsibilities of utility and customer at the point of common coupling (PCC). The proposed approach is based on robust partial least squares regression (robust PLS), which estimates system harmonic impedance by utilizing the signals of harmonic voltage and current measured synchronously at PCC. Consequently the harmonic emission responsibilities are calculated. The presented method reduces or removes the effect of outlying data points. The simulation and the practical engineering results indicate that the proposed method is valid and feasible.
Study on Smart Substation System Level Test
Authors: Zhong Jia Yong , Chen Zhi Long
Published: October 2013

This paper deals with the study of smart substation system level test. The test include three parts:network performance test,electronic transformer test and conformance testing.Network performance test involves the process layer network and station level networks test, transmission delay and frame loss rate of switch is tested.Electronic transformer test contains accuracy test, absolute delay test and polarity test. Conformance test is a test for model based on IEC 61850,test flow is studied.
A Determination Method for Grading Capacity of Reactive Power Compensation Using AFSA to Refine Research
Authors: Ma Run Ze
Published: October 2013

Reactive power is extremely important in the power system. To do reactive power compensation in place where reactive power is consumed a more reasonable approach. Traditional grading capacity of reactive power compensation determination methods are prone to sub or over-compensation. This paper firstly established a grading capacity of reactive power compensation optimization model; then introduced the artificial fish swarm algorithm(AFSA) method for grading capacity of reactive power compensation; finally the proposed algorithm is verified through an example and compared with those based on other optimization search algorithm. The results show that using AFSA to determine the classification of reactive power compensation capacity leads to higher efficiency.
Oxidative Stress Effect on Testicular Germ Cells and Liver Cells in Mice Induced by Dibutyl Phthalate
Authors: Zhang Jing , Li Huan , Yu Jing Hong
Published: October 2013

Dibutyl phthalate (DBP) as a commonly used plasticizer can be detected in many environmental medium. In this study oxidative damage effect on testicular germ cells and liver cells in mice induced by DBP were investigated via vitro test. Testicular germ cells and liver cells of mice were incubated with medium containing DBP in different concentrations (0μmol/L,10μmol/ L,50μmol/L,100μmol/L), after one hour thiobarbituric acid assay and xanthine oxidase assay were used to measure the levels of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD) respectively.The results showed that the levels of MDA in testicular germ cells and liver cells increased gradually with the increase of DBP concentrations, while compared with the control group, the activities of SOD declined significantly at dosage of 50μmol/L and 100μmol/L. These results suggested that DBP could cause lipid peroxidation in testicular germ cells and liver cells of mice in vitro. Oxidative damage may be one of its toxic mechanisms. It would provide an experimental foundation for security application of DBP.
The Operating Evaluation Research of the Marshalling Stations Based on Fuzzy DEA
Authors: Kang Mei Hui , Xie Hai Hong , Qi Yuan
Published: October 2013

According to the input and out put of the marshalling stations operating work, the thesis establishes the evaluation index system of the operation efficiency of the marshalling station, then it use the fuzzy DEA model to evaluate the efficiency of marshalling stations operation. At last, the thesis chooses 3 kinds of marshalling stations to calculate their operation efficiency, then compare and analysis them to prove the reasonable method.
Design of Single-Phase Multi-Function Energy Meter
Authors: Gong Mao Fa , Su Yan Ping , An Bin
Published: October 2013

Taking into account the demands of multi-function meter with high reliability and low cost, a single-phase multi-function energy meter is designed based on the MSP430FE427. There is a multi-parameter measurement, multi-way communication and other functions for the MCU. Hardware circuit and software flow of the system are introduced. The current and voltage design, memory design and communication anti-interface design are described in detail in hardware circuit. Modular design scheme is adopted in the software design. Each module is relatively independent, so the program is easy to modify. It indicates that the energy measurement circuit owns high accuracy through analysis and comparison of test results.