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Based on the analysis of current conditions and shortages of the configuration files management in smart substation, the problems existing in current conditions are proposed, such as: ICD test technology, SCD test technology, SCD difference comparison technology. In order to meet the demand of the large scale smart substation construction, a solution of building the smart substation configuration...
This study put forward two methods to gain the human activity space data based on Vicon motion capture system, which were key frame superstitious method and key points combination method, and described the process of data processing and the extraction of human activity space data. The advantages and disadvantages were concluded through the comparison and analysis of the two methods. This study can...
The Halbach array is applied in the skewed brushless DC motor for improving electromagnetic torque. The paper analytical calculate the open circuit field and the armature field in the motor with Halbach arrays. There are two types in the Halbach arrays, one is each pole with two segments of magnet(1P2s) and another is each pole with three segments of magnet(1P3s). The electromagnetic torque is calculated...
Real-time absorption and dispersion dual-comb spectroscopy is achieved in the 3-μm region without mode-locked lasers or active stabilization. The resolved lines of flat-top frequency combs with adjustable line-spacing and tunable center wavelength enable precise spectroscopy.
In this paper, we present a deep learning based disease named entity recognition architecture. First, the word-level embedding, character-level embedding and lexicon feature embedding are concatenated as input. Then multiple convolutional layers are stacked over the input to extract useful features automatically. Finally, multiple label strategy, which is firstly introduced, is applied to the output...
Many ophthalmopathies have close relationships with the morphology of fundus retina. Optical coherence tomography (OCT) is an in vivo imaging technique that could rapidly acquire retinal microstructure images. Analysis of retinal OCT images enables to acquire large amounts of information useful for medical diagnosis. Manual analysis methods are time consuming and the results are very depending on...
Thermal image taken by infrared thermography can reflect distribution of skin temperature and indirectly reflect the physiological status. However, the acquisition of eye temperature with manual or semi-automated method will make computer-aided diagnosis system less automated. Moreover, infrared image is characterized by low resolution and blur, which makes it more difficult to extract eye contour...
Economic transmission planning heavily relies on the accuracy of the quantitative analysis using market simulation tool, and it therefore requires benchmarking the simulation tool and model against historical actuals. Facing the technical challenges of such analyses, there is a lack of systematic approach and standard in doing such analyses in the industry. In that regard, this paper presents a thorough...
This paper considers a multi-pair two-way relaying network, where multiple pairs of full-duplex users are served via a full-duplex relay with large-scale antennas under the amplify-and-forward protocol. Based on maximum-ratio combining/maximum-ratio transmission (MRC/MRT) processing, an exact achievable rate expression is derived by utilizing the statistical distribution of the channels to detect...
In recent years, pin corrosion on porcelain and glass insulators has occurred on many UHVDC transmission projects in China. With the operation surrounding of insulators taken into consideration, the mechanism of pin corrosion is studied and analyzed in this paper. Mechanical characteristics tests are also carried out. Test results indicate that pin corrosion can decrease the mechanical strength of...
A real-time and reliable communication method is presented based on successful application of IEC61850 and GOOSE mechanism. The paper provides an information collecting method, a process layer GOOSE network and a SSD configuration of all FTUs in an intelligent station and its distribution network. With these methods, the intelligent station communication efficiency can be improved significantly. Therefore,...
This paper presents a deep neural network-based protein-protein interactions (PPIs) information extraction approach which can learn complex and abstract features automatically from unlabeled data by unsupervised representation learning methods. This approach first employs the training algorithm of auto-encoders to initialize the parameters of a deep multilayer neural network. Then the gradient descent...
The battery energy storage system (BESS) insisting of Li4Ti5O12 (LTO)-based batteries is put forward in this paper in order to suppress the voltage fluctuation of the DC grid of elevator caused by regeneration energy of the traction machine. Based on the mathematical model of the regenerative power set up in MatLab/Simulink, the capacity and control method of BESS is designed to effectively achieve...
The hybrid energy storage system (HESS) composed of super capacitors and batteries is proposed in this paper for the power supply system of rail transmit to prevent the overtension of grid voltage caused by the braking energy. According to the power fluctuations and allocation principle, the capacity and control method of HESS are designed to achieve the voltage stabilization of the traction grid...
The control for a low-cost converter which consists of a half-bridge controlled rectifier and a four-switch three-phase inverter with two small film capacitors is presented, where a predictive controller is proposed to handle the large DC link voltage fluctuation, and a leading-angle flux-weakening method is used to control the converter to accomplish high speed operation of the IPMSM. Simulation...
We demonstrated the Doppler-free intermodulated fluorescence spectroscopy of the 4He 23P→31D transitions using a one-watt compact laser system at 588 nm. The power-dependent spectra of the 23P→33D transitions were studied and the Doppler-free spectrum of the 23P→31D transitions was first achieved.
We have observed the saturated absorption spectrum of the He-4 23S1-33P0,1,2 hyperfine transitions in a RF-discharged helium cell using a 6-mW 389-nm laser. The linewidth broadening due to power were investigated.
In this paper, we consider a multi-pair two-way amplify-and-forward relay interference channel, where multiple pairs of full-duplex users exchange information through a full-duplex relay with very large number of antennas, while each user only has two antennas. In order to save the transmission power, four typical power scaling schemes are proposed based on the maximum-ratio combining/maximum-ratio...
Electrical modelling is a very important method for studying the dielectric barrier discharge (DBD). The traditional models usually simulate the dynamical behaviors of DBD through combination of many circuit elements1 and have obtained more and more accurate results as the number of parameters increases. However the increasing parameters severely increase the complexity of the models, and as a result...
In this paper, the rotor eddy current losses in no load condition and load condition were calculated by the software MagNet for two 10 kW, 14000 r/min permanent magnet brushless DC(PM BLDC) motors whose rotor sleeves material are carbon-fiber and stainless steel respectively. And then, the prototype machines were fabricated and tested. It is shown that the carbon-fiber is superior to stainless steel...
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