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2020 7th International Forum on Electrical Engineering and Automation (IFEEA)最新文献

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Analysis on Secondary arc Current of 500kV Power Station Transmission Line 500kV电站输电线路二次电弧电流分析
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00096
Ren Hongtao
{"title":"Analysis on Secondary arc Current of 500kV Power Station Transmission Line","authors":"Ren Hongtao","doi":"10.1109/IFEEA51475.2020.00096","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00096","url":null,"abstract":"This paper uses EMTP (Electro-Magnetic Transient Program) software to establish the secondary arc current calculation model of a 500kV Power Station's transmission line, and through theoretical derivation combined with simulation calculation to study the influence of transmission line's length on the magnitude of secondary arc current, and draw the following conclusions: The capacitance component produced by the interphase capacitance mixing of the non-faulty phase accounts for the main part, which is basically linear with the line length. Line length has obviously effect on the secondary arc current. As the line length increases, the peak value of the secondary arc current also increasing and decays slower, meanwhile, the stable secondary arc current is greater.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129485497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Condition Assessment Method for Power Transformers Based on Variable Weight Principle and Fuzzy Comprehensive Evaluation 基于变权原理和模糊综合评价的电力变压器状态评价方法
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00185
Gui-rong Tan, Dan-dan Liu, Yijing Shi, Ziyang Yang
{"title":"Condition Assessment Method for Power Transformers Based on Variable Weight Principle and Fuzzy Comprehensive Evaluation","authors":"Gui-rong Tan, Dan-dan Liu, Yijing Shi, Ziyang Yang","doi":"10.1109/IFEEA51475.2020.00185","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00185","url":null,"abstract":"Transformer evaluation system is complicated and includes many uncertainties, which seriously affect the diagnosis results in the traditional power transformer. In order to improve the accuracy of power transformer, a condition assessment method for power transformers based on variable weight principle and fuzzy comprehensive evaluation is proposed in this paper. The key evaluation factors of the transformers state are established. Based on variable weight principle, a balanced function and the improved trapezium and triangle membership function are introduced to adjust the weight coefficient of various evaluation factors determined by analytic hierarchy process, which can get the matrix of fuzzy evaluation. Finally, the health status of power transformers is evaluated, which can reflect the operation status of transformers. The experimental results reveal that the accuracy of the method can reach to 91%, which can accurately assess the health status of the power transformer.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128397745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Research on thermal control technology of space station complex based on fluid-structure coupling 基于流固耦合的空间站综合体热控制技术研究
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00168
Qingsheng Xiao, Xiao Han, Junwei Wang, Ying Zhou, Chun Liu, Liming Zhang
{"title":"Research on thermal control technology of space station complex based on fluid-structure coupling","authors":"Qingsheng Xiao, Xiao Han, Junwei Wang, Ying Zhou, Chun Liu, Liming Zhang","doi":"10.1109/IFEEA51475.2020.00168","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00168","url":null,"abstract":"In order to meet the requirements of ground verification test at various stages of space station development, it is necessary to develop a comprehensive performance test verification platform for space station environmental control system. According to the test requirements, the ground comprehensive performance verification cabin must have a stable thermal environment. When the temperature difference between the inside and outside of the cabin is higher than 5 °C, the leakage heat of the cabin is not more than 300W. Taking the cargo spacecraft as an example, the cabin structure was modeled, and the computational fluid dynamics method was used to simulate the fluid-solid coupling heat transfer. The rationality of the design of the leak-proof thermal structure was verified, and the experiment was designed to test the temperature uniformity and heat leakage. The results show that both uniformity and heat leakage meet the requirements.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128508514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on Transient Saturation Characteristic of Current Transformer 电流互感器暂态饱和特性研究
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00033
Gao Qi, Huang Shaofeng
{"title":"Study on Transient Saturation Characteristic of Current Transformer","authors":"Gao Qi, Huang Shaofeng","doi":"10.1109/IFEEA51475.2020.00033","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00033","url":null,"abstract":"Current transformer (CT) is an important measuring equipment to transfer the current signal from the primary side of the system to the secondary side. Most relay protection depends on the current signal transferred by CT. However, CT is prone to transient saturation due to the influence of the aperiodic component of the fault current. This paper deeply analyzes the transient saturation characteristic of CT from the perspectives of equivalent circuit calculation and saturation mechanism and verifies the influence of aperiodic component on the saturation characteristic of CT through PSCAD/EMTDC software simulation. The measures to reduce the influence of transient saturation of current transformer on relay protection are introduced. It is of great significance to improve the performance of relay protection and the stability of electrical power system.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128174821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Finite Element Model Analysis of Key Component of Exoskeleton Ankle Joint Mechanism Based on ANSYS 基于ANSYS的外骨骼踝关节机构关键部件有限元模型分析
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00206
Sheng Wang, Zhengkai Feng, Chuanjiang Wang, Jianbo Zhou
{"title":"Finite Element Model Analysis of Key Component of Exoskeleton Ankle Joint Mechanism Based on ANSYS","authors":"Sheng Wang, Zhengkai Feng, Chuanjiang Wang, Jianbo Zhou","doi":"10.1109/IFEEA51475.2020.00206","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00206","url":null,"abstract":"On the basis of overall mechanical structure of existing lower limb exoskeleton robot, a key ankle joint protecting component of ankle joint mechanism is improved and designed. According to person's steps, the dimension and the model of the protecting component are specified by using SolidWorks, and the person's two kinds of gestures are determined. The concept of forces' balance in the plane is derived from a principle of zero moment point balance. The correctness of forces' balance in the plane is verified in the force analysis of an ankle joint. It puts forward the necessity of security design after wearing the component. The finite element analysis and mesh refinement of the component is finished by using ANSYS. Calculating and contrasting through the simulation analysis and check-theories, the test data were obtained by using static analysis method with a constant force, and adopting the transient analysis method with an instantaneous moment. The design and material of the component are demonstrated safety, which provided a mechanics research reference for other joints' key components.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129631473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Speed and Current Control of PMSM based on Double MPC 基于双MPC的永磁同步电机速度和电流控制
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00070
Xinyi Huang, Hongguang Pan, Keting Yuan
{"title":"Speed and Current Control of PMSM based on Double MPC","authors":"Xinyi Huang, Hongguang Pan, Keting Yuan","doi":"10.1109/IFEEA51475.2020.00070","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00070","url":null,"abstract":"To solve the problems of slow response speed of the permanent magnet synchronous motor (PMSM) system when the external interference occurs and the poor anti-interference ability, this paper proposes a double model predictive control (MPC) strategy for PMSM to control speed and current. To be specific, firstly, the mathematical model of PMSM is established under the two-phase synchronous rotation coordinate system. Secondly, we propose the double MPC strategy where MPC controller is used in the speed outer loop and deadbeat prediction controller is used in the current inner loop. Finally, By comparing the traditional control strategy (speed outer loop PI controller and current inner loop deadbeat prediction controller) with the double MPC strategy, the simulation results show that the double MPC has no overshot, better steady-state performance, faster dynamic response and stronger anti-load disturbance capability, which proves the effectiveness of the proposed strategy.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127067865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Service quality evaluation of fresh agricultural products cold chain logistics based on Genetic Neural Network 基于遗传神经网络的生鲜农产品冷链物流服务质量评价
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/ifeea51475.2020.00151
Mian Fu, D. Wang
{"title":"Service quality evaluation of fresh agricultural products cold chain logistics based on Genetic Neural Network","authors":"Mian Fu, D. Wang","doi":"10.1109/ifeea51475.2020.00151","DOIUrl":"https://doi.org/10.1109/ifeea51475.2020.00151","url":null,"abstract":"With the rapid development of fresh e-commerce, the cold chain logistics service quality of fresh agricultural products has been paid close attention by both businesses and customers. In order to overcome the defects of long training time and falling into local minimum, genetic algorithm is used to optimize the weights and thresholds of BP neural network. Through the actual data verification of an e-commerce logistics enterprise, the evaluation accuracy rate is significantly improved, which provides an effective method for the service quality evaluation of fresh agricultural products cold chain logistics.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130505378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) 2020第七届电气工程与自动化国际论坛(IFEEA)
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/ifeea51475.2020.00004
{"title":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","authors":"","doi":"10.1109/ifeea51475.2020.00004","DOIUrl":"https://doi.org/10.1109/ifeea51475.2020.00004","url":null,"abstract":"","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129202047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Stereo matching algorithm based on binocular vision 基于双目视觉的立体匹配算法
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/IFEEA51475.2020.00177
Yuanfa Ji, Yongchun Li, Xiyan Sun, Suqing Yan, Ning Guo
{"title":"Stereo matching algorithm based on binocular vision","authors":"Yuanfa Ji, Yongchun Li, Xiyan Sun, Suqing Yan, Ning Guo","doi":"10.1109/IFEEA51475.2020.00177","DOIUrl":"https://doi.org/10.1109/IFEEA51475.2020.00177","url":null,"abstract":"Binocular stereo vision technology has been widely used in target detection, unmanned driving and other aspects due to its advantages of low cost and wide range of application. It is a research hotspot in the field of computer vision. Binocular stereo vision is mainly to obtain 3D depth information of the scene by analyzing two or more views of the scene. Stereo matching is the core part of the scene, and the performance of the matching algorithm directly affects the effect of 3D reconstruction. This paper mainly analyzes and summarizes the local stereo matching algorithm, global stereo matching algorithm and semi-global stereo matching algorithm by studying stereo matching algorithms at home and abroad, expounds the characteristics and performance of various matching algorithms, and makes a comparative analysis of various algorithms.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"6 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123280599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Fault Analysis of Multi-terminal DC Distribution System and Parameter Coordination of Protection Equipment 多端子直流配电系统故障分析与保护设备参数协调
2020 7th International Forum on Electrical Engineering and Automation (IFEEA) Pub Date : 2020-09-01 DOI: 10.1109/ifeea51475.2020.00063
Rui Li, Yini Xu, Yanwen Zheng, Guomin Luo
{"title":"Fault Analysis of Multi-terminal DC Distribution System and Parameter Coordination of Protection Equipment","authors":"Rui Li, Yini Xu, Yanwen Zheng, Guomin Luo","doi":"10.1109/ifeea51475.2020.00063","DOIUrl":"https://doi.org/10.1109/ifeea51475.2020.00063","url":null,"abstract":"DC circuit breaker is an effective way to isolate faults on the DC line. However, it cannot always meet the system requirements limited by the manufacture ability. DC current limiting reactor can reduce the fault current to within interruption capability of the DC circuit breakers (DCCB). Therefore, the parameter matching of DC current limiter and DC circuit breaker is of great significance to the reliability and stability of the system. However, there are no uniform standards for the parameter selection of DC current limiters at present. This paper analyzes the pole-to-pole fault and calculates the fault currents in a three-terminal radiation network, which provides a basis for the protection. And the parameter value calculation is based on the typical case of medium voltage. A Three-ended DC distributed system is built in MATLAB to verify the correctness of the design method by simulation.","PeriodicalId":285980,"journal":{"name":"2020 7th International Forum on Electrical Engineering and Automation (IFEEA)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123012407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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