bluuebunny/crossref_metadata_2025 huggingface dataset:
Multi-index Cost-benefit Model to Assess Land Development Costs
Authors: He Peicong
Published: December 2019

In land development and utilization projects, managers rarely consider the loss of ecosystem service value, often resulting in waste of resources. Based on the land development and utilization project, this paper proposes a multi-indicator cost-benefit comprehensive analysis model (MCCAM). MCCAM divides the four aspects of the indicator system by dichotomy, including determining resource loss costs through MESV, calculating environmental degradation costs using delay factors, considering project planning factors and market fluctuations, and correcting economic benefits and costs. On the other hand, MCCAM quantifies the value of the ecosystem service value model and combines the non-equalized cobweb model with time-delay effects to modify the model parameters. According to the sensitivity analysis of the model, this model provides effective suggestions for the planning and management personnel of the land development and utilization project.
Industrial Application of Non-thermal Plasma (NTP) for Mercury and Dioxin Removal in Flue Gas
Authors: Li Zhen , Chen Yang , Feng Qinzhong , Wei Shihao , Liu Liyuan , Wang Junfeng , Li Yue , Jiang Xiaoming
Published: December 2019

At present, there is an urgent demand for mercury and dioxin pollution control technology, internationally. It is necessary to find a solution other than the activated carbon adsorption process. In recent years, our self-developed low temperature plasma coupling system has been applied for mercury and dioxin removal in the flue gas, the system is composed of corona discharge plasma reactor and ceramic nano-material adsorption tank. The parameters of the plasma are 35-40kV, 400-450A, 1000Hz. The saturated adsorption capacity of ceramic nano-materials for Hg2+ is more than 5156μ g(Hg2+)/g. Pilot plant testes have been conducted in several industries, including collaborative disposal of cement kiln, medical waste incineration, recovery of waste mercury catalyst, recycling of waste fluorescent tubes, and achieved ideal result (Hg removal efficiency > 95%). It is expected to be an economical and efficient technology for mercury and dioxin removal, with great promotion value and social significance.
Research on characteristics and benefits of multi-energy complementary integration optimization of Qinghai clean energy base under new electricity reform
Authors: Wang Xiaoxuan , Zeng Ming , Xu Jin , Gan Jiatian
Published: December 2019

By carrying out research work on Qinghai clean energy multi-energy complementary integration optimization, this paper demonstrates the multi-energy complementary optimal power supply ratio and operation scheme. It maximizes the ability of clean energy consumption and delivery, and contributes to the development of green energy in Qinghai. It plays a leading and innovation-driven role in the research and development of new energy research and development in the country.
NiCl2 Cathode with the High Load Capacity for High Specific Power Thermal Battery
Authors: Lin Xiaoxia , Fu Licai , Zhu Jiajun , Yang Wulin , Li Deyi , Zhou Lingping
Published: December 2019

The advanced thermal batteries with CoS2 cathode are applied to provide high energy, delivering lower specific power, because it is not suitable for high current discharge. NiCl2, possessing a high potential and large current discharge capacity, is considered as one of the cathode candidates for high power thermal battery. LiB/NiCl2 couple outputs effectively specific power of ∼17.3kWkg−1 in this work at 500°C and 0.5Acm−2 (8Ag−1). However, NiCl2 has highly dissolution in LiF-LiCl-LiBr electrolyte (widely used in thermal batteries), resulting in the capacity loss and severe safety problem. Here, cross-sections between NiCl2 cathode and LiF-LiCl-LiBr electrolyte have been characterised by SEM after discharge at 500°C, and 0.5Acm−2-discharged interface exhibits blurrier boundary than that of 0.2Acm−2-discharged.
Indoor Fingerprint Localization Algorithm Based on Variable Weight Using Channel State Information
Authors: Sun Shasha , Wang Peng
Published: December 2019

In order to solve the problems of indoor fingerprint localization algorithm based on static weight, such as low positioning accuracy and poor environmental adaptability, a variable weight indoor based on channel state information with Euclidean distance as weight reference is proposed. In the preprocessing stage, the collected CSI amplitude values are first subjected to Butterworth low-pass filtering denoising processing, and then the values of each sampling point are averaged, and the reference point location fingerprint database is established by combining the known coordinates. The weight index α is introduced in the online positioning stage, and the nearest neighbor is found by the KNN algorithm with the CSI eigenvalue reference. Then the weight index β is introduced, and the Euclidean distance is used as the weight reference, and the nearest neighbor is weighted. Get the coordinates of the target position. The experimental results show that the indoor fingerprint localization algorithm proposed by this scheme has higher positioning accuracy and less fluctuation of positioning error than the traditional KNN-based indoor fingerprint localization algorithm.
Application of energy storage technology used in photovoltaic power generation system
Authors: Bui Wenping , Ding Zhilin , Cai Xing , Xu Renbo , Li Shaoyi , Feng Shuling
Published: December 2019

Renewable energy needs the usage of energy storage technology to manufacture its energy utilization because of instability via environmental impact in generating electricity process. Therefore, energy storage technology plays an important role in the process of renewable utilization systems, many kinds of new energy technologies consider energy storage system as an part of their energy management as well as progress of corresponding technologies. This paper promotes the development of energy storage technology and application of two topological structures, expounds its the function in power system and comparison under various control methods.
Research on Intelligent LED Headlamp System Based on Multi-Sensor Fusion
Authors: Wu Youyu , He Longqin
Published: December 2019

This paper researches on automobile headlamp system. Multi-sensor fusion technology is used in the system, which can realize for data acquisition of full automation, including the road conditions and the vehicle’s own operating status. On this basis, the deflection angles of headlamp at bend and ramp are calculated in real time, and the illumination angle and the illumination distance of the headlamp are adjusted accordingly. Finally, the research on intelligent LED headlamp system with the functions such as intelligent switching of low beam and high beam, bend adaptive lighting and ramp adaptive lighting is completed. The test results show that the system performance meets the basic requirements of automobile adaptive lighting.
Research and Implementation of Electric Bicycle Anti-Theft System
Authors: Jian Yuanming , Ji Jianbo
Published: December 2019

Electric bicycles are energy-saving, environment-friendly, lightweight, labour-saving, fast and reliable, and can meet the requirements of national energy-saving and emission reduction policies and scientific development concept. They are the first choice for consumers to travel in cities. The phenomenon of theft and loss is becoming more and more serious. Improving the anti-theft system of electric vehicles on the market has become an urgent livelihood and social problem to be solved. This paper mainly uses STC89C52 MCU as the main control chip to design an anti-theft system for electric bicycle. It realizes the functions of two-way vibration detection, sound and light alarm, mobile phone short message alarm, GSM short message remote power cut and short message remote control. The system has low power consumption, stable performance, low cost and wide application prospects.
Misalignments Computation of a Two-Mirror Optical System based on Modified Merit Function Regression Method
Authors: Wu Wei , Shang Jianzhong , Luo Zirong , Fang Delei , Deng Zhun
Published: December 2019

The computer-aided alignment (CAA) is a key technology to align a precision optical system, which is generally a difficult and laborious work. However, many methods proposed has a weak point in that they cannot calculate the misalignments accurately if there are figure error in mirrors. In order to solve this problem, a new modified merit function regression (MFR) is developed, which can compute the misalignments even if the effect of figure error. Misalignments computation based on the traditional and modified MFR are tested in a typical two-mirror optical system, experimental results shows the correctness of modified MFR and its high calculation accuracy.
Study on the Optimization of Energy Saving and Consumption Reducing Process of Tobacco Leaf Beating*
Authors: Yang Yang , Zhang Yuhai , Ou Mingyi , Gong Shuang , Han Lei , Wu Youxiang , Gong Shuang , Liu Sucan , Xu Hongqing
Published: December 2019

In order to realize energy saving and consumption reduction in the threshing and rebakingof flue-cured tobacco, this study conducted a process optimization study on reducing the intensity of leaf clotting on the premise of not affecting the current tobacco structure of the finished sheet. The results showed that “Low moisture and low strength” beating and rebaking can improve energy saving, consumption reduction and tobacco quality; using a wetting export moisture 17.5%, two outlet temperature 50 °C, a kind of roll speed 400 r/min parameters can realize leaf energy saving is obtained; the energy saving and reducing effects of the moisture, temperature, speed of the first dozen rollers, C3F rebaking intensity and B2F rebaking intensity were respectively 10.26%, 13.79%, 27.27%, 3.89% and 5.20%.
Design of Charging Pile Control System for Electric Vehicle Based on BP Neural Network
Authors: Chen Jialin , Zhou Zheng , Li Lei , He Yi , Zhao Shiwen
Published: December 2019

This paper presents a design scheme of charging pile control system for electric vehicle based on BP neural network and PID control. The design goal of this scheme is to design a charging pile control system for electric vehicles which is suitable for public parking lot and district parking lot. It can realize fast charging of electric vehicles, human-computer interaction with the system, calculation of consumer price and other functions.
Influence of Hole-Pressure Error on Pasty Propellant Rheological Test Results
Authors: Lei Guo , Dong Cheng , Ke Liu
Published: December 2019

Pasty propellants are viscoelastic fluids that exhibit a normal stress difference in shear flow. This phenomenon causes the pressure data measured by the pressure tap to be inconsistent with the expected value, which is represented by the hole-pressure error. In order to find out its influence on the rheological measurement results, this paper simulate the tube flow with the pressure tap based on PTT model. Results show that the pressure value in the circular section decreases with the increase of radial distance, and there is a weak secondary flow and lateral flow at the entrance of the pressure tap. By analyzing the pressure drop data of tube flow, the power law model is used to fit the desired pressure drop and the measured pressure drop respectively. It indicates that the hole-pressure error results in a small fitting value. However, the discrepancy between the power law model and the material has a certain positive effect. It can reduce the influence of the hole-pressure error on the forward calculation results by selecting the appropriate working range.
Numerical Simulation and Performance Test of Multi-heat Resource Water Cooling System
Authors: Zhang Longyan , Guo Yong
Published: December 2019

It is hard to obtain the performance of the whole traction converter water-cooling system with different shape and route connecting tubes. In order to get the performance effectively and rapidly, the numerical simulation method is adopted to do that. The flow rate to every water-cooling heat sink is acquired through simulation analysis. Based on the flow rate, the temperature distribution of water-cooling heat sink has been investigated, and also the temperature variation of water-cooling system. The results show that the temperature difference between water-cooling heat sink is less than 1°C under the same inlet flow rate.With the purpose of verifying the accuracy and correctness of the numerical simulation method, the performance test also has been done.The difference of performance result between numerical simulation and test is below 6%, which demonstrates the accuracy and feasibility of numerical simulation method. Comparing with test, the numerical simulation method can greatly improve the design efficiency and save human and financial resources.
Simulation of Temperature Field in FDM Process
Authors: Zhang Jian , Zheng Yanliang , Li Huimei , Feng Huijuan
Published: December 2019

In order to improve the precision and mechanical properties of FDM molding parts, the temperature field of the rectangular thin block was simulated and studied by using the finite element method. The analysis results were consistent with the actual process. On this basis, the temperature field distribution of the molded parts under different printing speeds was compared, providing guidance for the reasonable selection of printing speeds.
Design of dynamic error detection system for grating scale
Authors: Zhang C M , Zhang L S , Hu G L , Zhang S T
Published: December 2019

Grating scale is a closed-loop detection and control tool for precision machine tools, and its accuracy detection needs a higher precision detection platform. There are two kinds of commonly used detection platform guideways: sliding guideway and rolling guideway. Because of the contact of points or lines, the error caused by the guideway itself is obvious. In order to reduce the error of the platform itself, the air-floating guideway with small friction resistance and no vibration relative to the motion is used as the support mode, and the air pressure is debugged according to the smoothness of sliding. The static accuracy detection method of grating sensor is comparatively mature, but there is no effective solution for its dynamic accuracy detection. To solve this problem, we developed a dynamic error detection system of grating scale based on high-precision grating scale. The experimental results show that the system can detect the dynamic accuracy of grating scale, and has high detection efficiency. It is suitable for mass rapid measurement in practical work.
Effect of Temperature and External Load on Pre-Tightening Force of Satellite-Rocket Belt
Authors: Wang Wei , Duan Chenxu , Ma Xiaoqin
Published: December 2019

The satellite-rocket unlocking device is an important part for the smooth separation of the satellite and the rocket after they arrive the scheduled orbit. This paper aims to study the temperature and the external load effect on the belt pre-tightening force, which is an important design parameter that directly determines the reliability of the connection between satellite and rocket. Formula is given for calculating preload change of the belt. Along with the temperature change, the percentage error between the calculation results and test results is 0.88%-6.9%, and with the external load increasing the preload is increasing which follows the increase of the press on the interface surface, and the percentage error between calculation results and test results is 1.7%-9.4%, the result is very useful to calculate the preload of the satellite-rocket belt.
Analysis of the Status Quo and Countermeasures of Logisticians in Land Engineering Scientific Research Units
Authors: Sun Lu , Zhang Jing
Published: December 2019

In order to protect the land engineering research work smoothly, this paper takes shaanxi construction and engineering institute of technology as an example, analyzes the structure, age, gender and other structural components of the logistics personnel. For the related problems of logistics personnel management, it proposes countermeasures such as raising the awareness of teamwork, carrying out relevant professional knowledge training, and establishing a job evaluation mechanism.
Study on Mechanism and Characteristics of Particle Charging In Electrostatic Precipitator
Authors: Zhang Kexin , Chen Shiyu , Tan Long , Xu Minhu , Zhang Hongda , Zhang Dewen
Published: December 2019

Nowadays, Electrostatic precipitator (ESP) is an important large-scale equipment for reducing dust elimination and reducing pollution in industrial production. As the second working step of ESP, dust charging is very important, and its charge directly affects the subsequent work of the electrostatic precipitator and the dust removal efficiency. In this paper, the charging mechanism of dust particles in the discharge area of ESP is studied. The charge and its influencing factors of dust particles with different particle sizes under different mechanisms are analyzed. The research results have certain effect on how to increase the charge of dust particles. The research in this paper is of great significance to improve the dust removal efficiency of ESP.
Research and Analysis on the Training of Standardization of Customer Service in Power Enterprises Based on the Background of Linguistics
Authors: Xia Ganlin
Published: December 2019

Electric power enterprises are an important part of the national economy and a bridge connecting electric energy services with the public. Electric power enterprises provide high-quality electric power services for the majority of residents. Therefore, it is necessary to adopt standardized terms. Service standardization is a powerful guarantee for the service operation of electric power enterprises, improving the efficiency of service services of electric power enterprises, and improving public satisfaction. The use of standardized language in the process of customer service is an effective measure for enterprises to improve economic efficiency, and it is also an important means of internal standardization management. Therefore, enterprises attach great importance to standardization work and continuously improve the standardization management level of enterprises. It is very necessary to standardize the basis for promoting technological progress, improving product quality, service quality and engineering quality of enterprises, and is an effective means for enterprises to improve operational efficiency. An important tool for enterprises to achieve scientific management. The establishment of customer service standardization terms requires the specification of standardized terms in the context of linguistics to lay a good foundation for better customer service.
Low-voltage power line broadband carrier communication signal detection based on eigenvalue analysis
Authors: Xia Huizhu , Song Weiqiong , Li Rui , Wu Xiaolin , Luo Yizhao
Published: December 2019

In this paper, the eigenvalue analysis of the channel characteristics of low-voltage power lines is carried out, and the characteristics of impedance, signal attenuation and noise interference are studied. Based on the characteristics of China’s power grid and the on-site measurement of power lines in residential communities and metalworking internships, the noise sources and corresponding noise characteristics of low-voltage power line networks are analyzed. Aiming at the characteristics of signal attenuation and interference on low-voltage power lines, which are complex, random, and time-varying, and difficult to describe with more accurate analytical or mathematical models, several anti-interference measures to improve communication quality are proposed: Data packet reorganization Adding a wave blocker, multipath receiving technology, spread spectrum communication technology, and adopting a standardized communication protocol, and applying it to engineering experiments, the practice proves that the measures used are feasible and effective.
Thermal deformation prediction of high-speed motorized spindle based on thermal behaviour simulation
Authors: Zhu Xiaogang , Wang Xiaofeng , Liu Yang , Guo Shu , Zhai Ying
Published: December 2019

This paper conduct research to the temperature field distribution and spindle’s thermal deformation of motorized spindle by applying finite element thermal-structural coupled numerical simulation technology. And this paper also researched the radial displacement produced by the inner and outer ring’s axial displacement of the angular contact ball bearing. Thus the combination between the finite element thermal-structural coupled numerical simulation technology and thermal error analytic modelling is realized. The analysis results of motorized spindle error is made. The analysis results show that this method is effective in predicting the temperature and thermal error of motorized spindle.
Research on Identity Certification Framework Model in core business of Power Grid
Authors: Chen Mengxian , Xu Rui , Ma Feng , Hu Nan , Dai Wenbo , Xue Ke
Published: December 2019

Based on provable security theory for security protocols, a provable security identification framework model suitable for the core business of power grid is proposed to enhance the management level of user identification and improve security of user identification schemes. To verify the model, a new identification scheme for identification scenarios is given according to the model. Security analysis shows that the scheme is proven to be secure in the model. In addition, performance analysis shows that the scheme can timely response to hundreds of thousands of user requests, thus it can be used as an effective scheme for identification in the core business of grid.
Study on load adjustment range of 150 MW unit in heating season after high back pressure reform
Authors: Lao Jinxu , Zheng Wei , Zhu Lingkai , Guo Junshan , Shang Panfeng
Published: December 2019

New energy is experiencing rapid development, but it brings great challenges to peak shaving of power grid. Especially in the stage of wind power outbreak in winter, the operation mode of heat supply unit “fixing electricity by heat” aggravates the difficulty of peak shaving of power grid. Taking 150 MW double-extraction heat-supply unit as an example, the load adjustment intervals under different heating modes are enumerated by field test method for reference of power generation enterprises and power grid dispatching operation.
Design of a Weixin Service Platform for Bird Damage Early Warning in Power Grid
Authors: Hao Yanjun , Yue Guoliang , Li Yanglin , Li Fan , Li Wei , Lei Lei , Chen Mingxia
Published: December 2019

With the improvement of ecological environment and the expansion of the scale of power grid construction, “bird damage” has brought great hidden dangers to the safe and stable operation of power grid. On the one hand, human awareness of natural protection has been enhanced, the speed of bird reproduction has been accelerated, and the threat of birds to the line has gradually increased. On the other hand, bird damage prevention measures were not considered in the early design of power grid. Bird damage was prevalent in operation. After bird damage, the response measures were not timely, the treatment efficiency was low, and the number of line trips and non-outages increased. Especially in some backward areas, once the power grid loses contact with the provincial network, it will cause large-scale blackouts in the county (township) often occur, which directly affects the safe, stable and reliable operation of the power grid. It is urgent to prevent bird damage on the line.
An Improved Watershed Segmentation Algorithm of Medical Tumor Image
Authors: Lu Yuting , Jiang Zhanjun , Zhou Tao , Fu Shengwen
Published: December 2019

Aiming at the problem that the tumor is difficult to be accurately segmented due to noise and edge discontinuity in the chest breast MRI image, a medical image segmentation algorithm based on gradient edge detection and control marked watershed is proposed. Firstly, the mathematical morphology reconstruction filter is used to remove the small texture and noise of the MRI image of the breast tumor, and then the local minimum associated with the object is extracted from the low-frequency components of the gradient image, and they are formed into a binary marker image; The reconstructive technique is forced to be the local minimum of the original gradient image, the adaptive correction of the gradient image is realized, and finally the watershed segmentation is performed. The experimental results show that the algorithm can automatically and quickly extract the breast tumor region in the series of MRI images and realize the automatic segmentation of the region of interest in the medical image.
Risk Analysis for Evolution of Transmission Lines Tripping Fault Induced by Wildfires located in Xiangxi, China
Authors: Chen Changkun , Xu Tong , Zhao Dongyue , Lei Peng
Published: December 2019

The serious consequences of transmission lines tripping fault induced by wildfires (TLTFIW) urges scholars to pay more attention to the safe operation of transmission lines. To illustrate the evolution process of TLTFIW and quantitatively evaluate the occurrence probability of subsequent events, an algorithm used for TLTFIW is proposed by using ETA, FTA and fuzzy number theory in this paper. The evolution process of TLTFIW is simulated according to ETA, which is divided into six stage including wildfires occurring, early wildfires early-monitoring, Wildfires extinguishing, Wildfires spreading, transmission lines tripping, and re-closing failure. In addition, the reason of the subsequent events in the evolution process are analysed by FTA, and the trapezoidal fuzzy theory is employed to calculate the probability of each events. Finally, based on the evaluation results, suggestions are provided for the evolution links with greater risks. Furthermore, transmission lines located in Xiangxi is introduced to present an application of the algorithm.
Research on energy consumption of China’s prefecture-level scale based on DMSP/OLS night light data
Authors: Xu Zhao , Shan Baoguo , Zhang Chenglong , Duan Jinhui
Published: December 2019

Energy is an important support for the development of national economy. Accurate and convenient access to space-time dynamic information of energy consumption is of great significance for the rational formulation of energy policy. Based on the quantitative correlation between DMSP/OLS night lighting data and energy statistics, the spatial pattern of energy consumption in China from 2000 to 2013 was simulated at the prefecture-level scale. The results show that it is feasible to simulate energy consumption in different cities in China based on DMSP/OLS night lighting data, which can reliably reflect the temporal and spatial dynamics of energy consumption. This study provides a new method support for dynamic monitoring of energy consumption.
A Study on Innovation Radiation Effects of Shanghai Science and Technology Innovation Center from the Perspective of Field Theory
Authors: Zhang Jialin
Published: December 2019

The way in which science and technology innovation center drives regional innovation capabilities depends on the spillover and radiation of innovation resources. Starting from the connotation of the science and technology innovation center, combined with the electric field theory in physics, the innovative radiation field with the science and technology innovation center as the field source is constructed, and the field source intensity is quantified from four aspects: innovation resources, innovation input, innovation achievements and innovation carrier. Taking the Shanghai science and technology innovation center as the research object, and using 2014 as the base year, the innovative radiation effects of the Yangtze River Delta urban agglomeration before and after construction was measured. The research shows that the radiation intensity of Shanghai has increased significantly since the establishment of the science and technology innovation center, but the overall radiation pattern has changed little and there is still a lot of room for improvement. Finally, the countermeasures for enhancing the innovative radiation effect of the Shanghai science and technology innovation center are proposed.
Pricing analysis of stock index linked structured financial products of Commercial Banks
Authors: Li Mengzhen
Published: December 2019

Financial products of commercial banks are an investment tool designed and issued independently by commercial banks. Nowadays, commercial banks have issued a variety of financial products, and the theoretical research on this aspect mainly focuses on marketing, the analysis of influencing factors of return rate and etc, but involving less pricing. Most of the research on pricing is limited to products with a simple structure. The case of this study is a structured financial product related to stock index. And besides an in-depth analysis of the structure characteristics and risk characteristics of the product, this study also calculates out the theoretical pricing of the product on the basis of using the stationary time series for conditional heteroscedastic model and the Monte Carlo Simulation Method (with the aid of Eviews software), and compares it with the actual pricing set by the Agricultural Bank of China, and then determines the rationality of the actual pricing. And suggestions are given accordingly.
Research on Automatic Operation Control Algorithm of High Speed Train Based on Artificial Neural Network
Authors: Ke Qian , Zhang Yan
Published: December 2019

With the development of social economy, the demand for transportation is also growing. High-speed railway has become an important part of the transportation system. It is not only an inevitable requirement for the development of the national economy, but also an important support for the implementation of the national strategy. Therefore, whether the high-speed train can operate smoothly and safely is related to the passenger’s life and health and property safety. This requires accurate control of the automatic operation of the high-speed train during the driving process. At present, China’s research on the automatic operation control of high-speed trains is still in its infancy. The problems of traction and brake system actuator failures that may occur during long-term running of trains can be solved by artificial neural network-based modeling methods. The automatic operation control algorithm of high-speed train running process is established. The self-correcting control strategy based on artificial neural network is used to realize the speed tracking of high-speed trains. The high-speed train visual simulation system is established by virtual reality technology and verified on the artificial neural network platform. The effectiveness of the proposed automatic operation control method.
Nonlinear correction of 2-D PSD for pulsive excitation based on steady-state response results
Authors: Cao Yang , Jia Fangxiu , Zhang Qing
Published: December 2019

Position sensitive detectors (PSDs) have been spotlighted as effective position sensors in terminal navigation of laser semi-active guided weapons. However, it remains an ongoing challenge to improve linearity, especially under impulsive excitation. In this paper, the response of the PSD for continuous light excitation is proposed for the first time to correct the PSD response results under pulsive excitation. After establishing the mathematical model of the two-dimensional PSD, the response results under different illumination excitation are simulated and analysed, which theoretically proves the feasibility of the correction method in this paper. Finally, the experiment is carried out with PSD (S5990-01). The results reveal that the distortion degree of the PSD response results is more obvious with the decrease of pulse width under pulse illumination. The impulse response result can be linearly mapped into a steady-state response result with the range of slope values being 0.403∼0.614 and intercept values being -0.098∼0.106.
New Method Research and Systematic Analysis of High Voltage Electrical Test in Power System
Authors: Shi Zhifeng , Huang Nan , Ai Hongtao , Shi Xiangyu , Zhu Tianan , Fu Zhengzhou , Chen Haoze , Wang Peng
Published: December 2019

In the power system, the generator set is an important core equipment, and the state of operation of the generator set directly affects the reliability operation of the power system. The detection and research of high-voltage electrical test in power system can detect potential fault problems and deal with them in time, effectively ensuring the reliable operation of the power system. This paper summarizes the types and principles of high-voltage electrical tests, proposes improvement measures for the problems in high-voltage electrical test schemes, improves the accuracy and efficiency of high-voltage electrical test schemes, and effectively ensures the smooth operation of power systems.
Application of Image Processing Technology in Substation Patrol Inspection
Authors: Zhao Junjie
Published: December 2019

Electricity plays an important role in the development of national economy, and substation is the core of the whole power grid, which plays an important role in dispatching power supply. In the past, substation management mainly relied on human resources to monitor and inspect the substation on duty, which caused a lot of waste of electric power technicians. With the development of automation technology and network technology, a new substation management mode emerged as the times require, that is, the application of image processing technology in substation inspection. This kind of substation inspection involves image and voice compression technology, computer technology, multimedia network technology, so it is a relatively complex large-scale system. Image processing technology makes it possible to patrol unattended substations. In view of space, this paper mainly introduces the application of image processing technology in substation patrol.
Research on Cable Loss Management and Loss Reduction Measures of 10kV Distribution Network
Authors: Zuo Yue , Zhao Fei , Zhu Lianyong , Zhang Bo
Published: December 2019

This paper discusses the importance of power supply companies to strengthen cable loss management for distribution networks of 10kV and below under the new power consumption situation. By analyzing the composition of cable losses, technical cable loss, management cable loss and assessment In terms of management, etc., analyze the factors affecting cable loss and corresponding countermeasures. In terms of technical cable loss, the influence of 10kV distribution network structure and transmission and distribution equipment, energy metering device, reactive power, voltage and other factors on distribution network cable loss and countermeasures are analyzed. In the aspect of managing cable loss, the effects of factors such as quality of copying, energy metering, anti-stealing, and operation of distribution network on distribution cable loss are analyzed. From the perspective of assessment management, the establishment of the distribution network cable loss assessment management system, the implementation of the sub-pressure distribution sub-area assessment, cable loss indicator management, etc. were discussed.
Research on Key Protocol Technology of Safe Access and Imitation Attack for Power Industrial Control Terminal Equipment
Authors: Wang Xiaoqiang , Rui  , Xuehai Yu Zhao , Zhang Jinye
Published: December 2019

Industrial control system is widely used in social production activities and its security is directly related to national security and social stability. In this paper, the security threats and protection status of power industry control system are analyzed. A framework of information security evaluation system for power industry control system is proposed, which consists of three parts: experimental verification environment, product detection capability and security service capability, and the construction scheme of the system is discussed. A hardware-in-the-loop simulation and verification platform is constructed to realize the simulation and verification of power industry control system tools. The vulnerability of power industry control protocol can be found in depth. The problem of ambiguous attack mechanism and lack of verification means of power industry control system is discussed, which can provide support for the research of attack and protection of power industry control system.
The comprehensive planning method of distribution network considering DG and energy storage facilities
Authors: Lu Xing , Ouyang Shaojie
Published: December 2019

The development of distributed generation and battery energy storage station make the traditional power distribution network planning method be inapplicable. To solve this problem, we establish a distribution network planning model comprehensively considered distribution network lines, distributed generation and the energy storage facilities. We use the construction cost and operation maintenance cost minimum during the distribution network planning period as objective function, system operation reliable as well as other system operation constraints as constraint conditions, and take advantage of the results of load forecasting to build the model. This paper has certain guiding significance for the long-term planning of the distribution network and distributed generation.
Principal Component Regression and Its Application in Power Harmonic Emission Level Evaluation
Authors: Song Shuping , Wang Jie , Li Linheng , Cheng Shuo , Li Zhijian
Published: December 2019

Accurate harmonic emission level evaluation is the basis of distinguishing the responsibility of harmonic pollution between power supply system and consumer. A new harmonic emission level evaluation method via principal component regression (PCR) is proposed in this paper. Firstly, the principle of PCR is analyzed. Then, harmonic impedance of supply system is evaluated by PCR-based method. Subsequently, harmonic emission level of supply system and consumer is evaluated according to the harmonic impedance of supply system. This technique has the advantage of high accuracy in estimating harmonic emission level. The effectiveness of the proposed method was verified by computer simulations and field test.
Research on Reaction Phase to Phase Fault Location and Protection of Distribution Network
Authors: An Wan , Zhou Xu , Yang Ling
Published: December 2019

A regional differential protection device for the reaction phase to phase fault of the distribution network was designed, as a result of failure to swiftly, efficiently and accurately identify, locate and eliminate the reaction phase to phase fault of distribution network. The device is installed at each bus bar. Each incoming and outgoing data information of the bus bar is read through the RS485 bus, the communication between each regional protection device is achieved through the optical fiber connection, and the regional protection device with the most hierarchical lines on the bus bar is the host station. Exchange the real-time operation data of the line collected by the regional differential protection device in the lines between the regional differential protection devices, the regional differential protection device begins to execute identification and send fault information to the host station to composite the fault information matrix A when detected single-phase current sudden change is greater than the set value. In result, swift, efficient and accurate detection of distribution network fault, furthermore, isolation of phase to phase fault are achieved.
Preliminary Study on the Internet Sensation Analysis of New Energy Vehicles Policy
Authors: Chen Qing
Published: December 2019

With the strong support of the government, new energy vehicles are developing rapidly. However, in the information age of networked and comprehensive application of the internet, the internet sensation have a positive or negative impact on the development of the new energy vehicle industry. Quantitative analysis of the internet sensation will help to propose suggestions and the countermeasures to adapt to the development of this industry. This paper applies the LDA topic model, machine learning and volume analysis of SVM classification algorithm to analyse the information obtained from the network information source of the new energy vehicle policy. The results show that government, enterprises and consumers are the main actors in the cultivation of new energy vehicles industry. While the government continues to stimulate the enthusiasm of enterprises for the construction of new energy vehicle infrastructure, it should reduce public concerns about financial subsidies and stimulate consumers. The enthusiasm of buying drives the sustainable development of the market. In order to reduce the deviation of government policy implementation, it is necessary to timely and directly use the internet as an information exchange platform for immediate and convenient communication advantages, to pay attention to and monitor the network public opinion of the new energy vehicle industry, and to reflect on lyric topics such as infrastructure and application promotion, as well as real-time tracking and understanding of the problems reflected in lyric topics such as infrastructure and application promotion, and actively adjusting the policy methods that are adapted to them, so that as a policy maker, it can fully stimulate the enthusiasm of enterprises and consumers and maximize the public interest.
Strategy of Users’ Assets Receiving for Power Grid Enterprises under the Environment of Transmission and Distribution Price Reform
Authors: Liang Jiahao , Zhang Tao , Liu Dunnan
Published: December 2019

Under the environment of transmission and distribution price reform, the investment of power grid enterprises will be strictly regulated by the government, so the autonomy of investment will be weakened, and the investment capacity and cost space will be restrained by each other. This paper combs and analyzes the whole process risk of receiving users’ assets, the evaluation method and key points for the implementation of receiving users’ assets for power grid enterprises, and puts forward the main management strategies of receiving users’ assets for power grid enterprises under the environment of transmission and distribution price reform.
Research on Fault Injection Method for Testability Verification Test
Authors: Qiu Wenhao , Lian Guangyao , Long Miao , Gao Jing
Published: December 2019

Aiming at the problems of weak generality of fault injection method and inaccurate reproducibility of fault signal caused by abstract failure simulation method when fault injection is applied to complex equipment with high integration, a general fault injection method is proposed. Firstly, the principle and effectiveness of fault injection are analysed, and the mode and purpose of fault injection are defined. Then, the basic principles of three fault injection methods are studied to provide a basis for the research of general injector. Finally, a failure simulation method based on mixed signal model is proposed to achieve more accurate and simple fault reproduction. The fault injection method is applied to a certain type of control system. The results show that the method can provide comprehensive and accurate elements for fault signals to be simulated in the fault signal simulation stage, and improve the injection efficiency of fault samples in testability verification test.
Research on Interface Mode and General Information Transmission Technology in smart Substation
Authors: Wen Bo , Li Hengxuan , Li Peng
Published: December 2019

Through the analysis of the system architecture of smart substation, the interface mode and information transmission protocol between secondary equipment and primary equipment are defined. The general information transmission protocol for data acquisition and control instruction transmission is studied, which improves the reliability and security of the secondary system of smart substation.
Improved method of OGM packet statistics and measurement calculation in BATMAN. Adv routing protocol
Authors: Wang Guofu , Peng Nuo , Zhang Faquan , Ye Jincai
Published: December 2019

In the performance test of mesh network routing protocol, it is found that BATMAN. Adv routing protocol has better performance than the existing multi-hop routing protocol, but it also has the defects of poor routing convergence and slow response to network topology changes. Based on the detailed analysis of BATMAN. Adv routing protocol, this paper proposes an improved method. First, the statistical method of OGM package was redesigned, the cumulative sliding window method is used to improve the influence of the latest serial number of OGM, and the calculation method of TQ value is changed from average accumulation to weighted accumulation to further improve the influence of the latest TQ value. At the same time, an improved mechanism is proposed in order to solve the problem of link blocking caused by sudden node failure. Finally, through simulation experiments, the performance of the packet delivery rate and end-to-end delay of the three routing protocols in two different scenarios is compared. It shows that the improved protocol can effectively improve the packet delivery rate, reduce the average end-to-end delay, and improve the network performance.
Non-positive Face Chin Detection Method Based on Curve Fitting
Authors: Xu Zhengqi , Shen Tianfei
Published: December 2019

The head recognition system needs precise contours of the face area, whereas the non-positive face color contours often contain neck areas, which will seriously affect the extraction of contour features. Therefore, the neck area in the outline of the human face needs to be removed to obtain the final facial contour. In this paper, the chin curve is fitted based on the extremum of the contour features of the left and right sides of the human chin region, and then the neck area can be removed. The experimental results show that the method proposed in this paper can obtain the non-positive face profile without the neck.
Research on Error Correction Method of Massive Data Based on Arbitrary Partition Area
Authors: Bai Runqing , Xin Yong , He Xin , Huang Wensi , Lu Xin , Chen Jing
Published: December 2019

With the continuous construction of intelligent power grids, a large amount of data on power grid operation, production management and market operation have been accumulated in power systems, which are affected by factors such as collection, communication, and environment. There are quality problems in terms of integrity, consistency, and effectiveness of data. In this paper, by studying the characteristics of massive data and data anomaly identification method, a method of error correction for massive data in power grid based on arbitrary partition area is proposed. Taking abnormal data as the center and dividing the area based on the network topology structure, the abnormal data of the network is corrected layer by layer to achieve the purpose of improving the data quality.
Design of integrated test system for current/frequency conversion circuit
Authors: wang Yaya , Jia Yajuan , Liu Junhui
Published: December 2019

In order to quickly and accurately measure the performance parameters of the current/frequency conversion circuit (I/F conversion circuit) of inertial navigation system, an I/F conversion circuit test system is designed. Constant current signal, sinusoidal current signal and transient step current signal are provided to the measured system by a program-controlled constant current source. Through the designed frequency measurement circuit, the output frequency signal is measured accurately, the static, dynamic and transient responses of three kinds of I/F converter circuits are analyzed.