Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509146
Mian Fan, H. He, Bo Tan, Xianghan Wang, Xuefang Tong, Min Dai
Compared with metallic grounding material, flexible graphite grounding material is widely applied in grounding field of power system, due to its resistance of corrosion and high impulse current. Novel phosphorus contained Schiff-base is synthesized by 9, 10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide and furfuryl amine, salicylaldehyde, and is incorporating with CE to prepare a carbon foam by property of the resin blend under nitrogen atmosphere. The curing behavior and pyrolysis mechanism of the resin are investigated by DMA, TGA, FTIR and Raman spectrum. The results indicated that incorporating of PSF leads to incomplete combustion during the pyrolysis processing and results in more residues formed. As the consequence, the carbon foam exhibits good electrical conductivity, due to the formed residues consist of graphite structure.
{"title":"Preparation and electrical property of carbon foam grounding material by pyrolysis of cyanate esters modified with phosphorus contained Schiff-base","authors":"Mian Fan, H. He, Bo Tan, Xianghan Wang, Xuefang Tong, Min Dai","doi":"10.1109/ICEMPE51623.2021.9509146","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509146","url":null,"abstract":"Compared with metallic grounding material, flexible graphite grounding material is widely applied in grounding field of power system, due to its resistance of corrosion and high impulse current. Novel phosphorus contained Schiff-base is synthesized by 9, 10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide and furfuryl amine, salicylaldehyde, and is incorporating with CE to prepare a carbon foam by property of the resin blend under nitrogen atmosphere. The curing behavior and pyrolysis mechanism of the resin are investigated by DMA, TGA, FTIR and Raman spectrum. The results indicated that incorporating of PSF leads to incomplete combustion during the pyrolysis processing and results in more residues formed. As the consequence, the carbon foam exhibits good electrical conductivity, due to the formed residues consist of graphite structure.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"41 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89510784","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509249
Qingsong Jie, Qing Yang, Yu Zhang, Hao Cui
The online detection of the cable insulation status is of great significance to ensure the stable operation of the cable. Based on the transmission characteristics of the transient voltage in the cable, this paper proposes a method for detecting the cable insulation state. By establishing the cable distributed parameter model, the relationship between the cable transfer function and the insulation parameters is theoretically deduced. A simulation test platform for cable insulation testing was built based on PSCAD, and the aging of the cable insulation was simulated by changing the thickness of the cable insulation layer and the relative permittivity. The simulation results verified the feasibility of the method.
{"title":"Diagnosis of overall 10kV cable insulation state based on transient voltage transfer characteristics","authors":"Qingsong Jie, Qing Yang, Yu Zhang, Hao Cui","doi":"10.1109/ICEMPE51623.2021.9509249","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509249","url":null,"abstract":"The online detection of the cable insulation status is of great significance to ensure the stable operation of the cable. Based on the transmission characteristics of the transient voltage in the cable, this paper proposes a method for detecting the cable insulation state. By establishing the cable distributed parameter model, the relationship between the cable transfer function and the insulation parameters is theoretically deduced. A simulation test platform for cable insulation testing was built based on PSCAD, and the aging of the cable insulation was simulated by changing the thickness of the cable insulation layer and the relative permittivity. The simulation results verified the feasibility of the method.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"2 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89771239","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509228
Xiping Jiang, Yingkai Long, Yongfu Li
Mechanical fault is one of the main faults of GIS equipment. The traditional detection methods based on artificial hearing and touch, rely heavily on personal experience, with low reliability. The fault can only be discovered when the vibration intensity is high, which brings great security risks to the power grid. Based on the analysis of the vibration mechanism of GIS equipment, an portable defect detection device of abnormal vibration of GIS equipment is developed, which can detect potential mechanical defects of GIS equipment in time, and effectively guide maintenance work to ensure the safety and stability of GIS equipment. The acceleration sensor is used to obtain the vibration signal of the GIS shell, and the characteristics of the vibration signal waveform are extracted through the FFT algorithm and the VMD algorithm. The field test results show that this device can accurately locate the abnormal vibration of GIS equipment and distinguish the defect types.
{"title":"Research on the Defect Detection Technology of Abnormal Vibration of GIS Equipment Based on Acoustic Emission Analysis Technology","authors":"Xiping Jiang, Yingkai Long, Yongfu Li","doi":"10.1109/ICEMPE51623.2021.9509228","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509228","url":null,"abstract":"Mechanical fault is one of the main faults of GIS equipment. The traditional detection methods based on artificial hearing and touch, rely heavily on personal experience, with low reliability. The fault can only be discovered when the vibration intensity is high, which brings great security risks to the power grid. Based on the analysis of the vibration mechanism of GIS equipment, an portable defect detection device of abnormal vibration of GIS equipment is developed, which can detect potential mechanical defects of GIS equipment in time, and effectively guide maintenance work to ensure the safety and stability of GIS equipment. The acceleration sensor is used to obtain the vibration signal of the GIS shell, and the characteristics of the vibration signal waveform are extracted through the FFT algorithm and the VMD algorithm. The field test results show that this device can accurately locate the abnormal vibration of GIS equipment and distinguish the defect types.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"22 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86363906","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}
For high-voltage power equipment, insulation is an important issue. The use of non-linear material can improve the electric field distribution in the device to increase the insulation utilization factor of the insulation structure. This paper takes the cable terminal as the research object, studies the influence of the thickness and length of the nonlinear material on the electric field distribution, and finds the best solution for the cable terminal. Use COMSOL to build a simulation model of DC 500kV cable terminal. Through the controlled variable method, the length and thickness of the nonlinear material are changed in the range of 300mm to 500mm and 4mm to 8mm respectively, and the corresponding electric field distribution is obtained. The results show that the end of the nonlinear material is the weak point of the high-voltage cable terminal. Within the set range, the electric field strength there decreases with the increase of the length, and also shows a decreasing trend with the increase of the thickness. The increase will increase the field strength of the surface where the external insulation is in contact with the air, so for the DC 500kV cable terminal, the best solution is when the nonlinear length is 500mm and the thickness is 4mm.
{"title":"Influence of the length and thickness of nonlinear material on electric field distribution in cable terminal","authors":"Qinghao Yang, Jun Hu, Zhikang Yuan, Jinzhong Li, Yu Yin, Hao Tang","doi":"10.1109/ICEMPE51623.2021.9509081","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509081","url":null,"abstract":"For high-voltage power equipment, insulation is an important issue. The use of non-linear material can improve the electric field distribution in the device to increase the insulation utilization factor of the insulation structure. This paper takes the cable terminal as the research object, studies the influence of the thickness and length of the nonlinear material on the electric field distribution, and finds the best solution for the cable terminal. Use COMSOL to build a simulation model of DC 500kV cable terminal. Through the controlled variable method, the length and thickness of the nonlinear material are changed in the range of 300mm to 500mm and 4mm to 8mm respectively, and the corresponding electric field distribution is obtained. The results show that the end of the nonlinear material is the weak point of the high-voltage cable terminal. Within the set range, the electric field strength there decreases with the increase of the length, and also shows a decreasing trend with the increase of the thickness. The increase will increase the field strength of the surface where the external insulation is in contact with the air, so for the DC 500kV cable terminal, the best solution is when the nonlinear length is 500mm and the thickness is 4mm.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"46 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83174782","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509159
Yi Luo, Mingyu Zhou, T. Fechner, Haitian Wang
HVDC cable accessories are key components of the future electricity transmission system. In the last three years, our team has been working on the research and development of HVDC cable accessories with a voltage level of 500 kV. Until the recently successfully passed type test, multiple failures have been experienced during R&D tests. This paper summarizes and analyses the recorded failures and may serve as a reference for future work on cable accessories design.
{"title":"Failure Analysis of HVDC Cable Accessories During R&D Tests","authors":"Yi Luo, Mingyu Zhou, T. Fechner, Haitian Wang","doi":"10.1109/ICEMPE51623.2021.9509159","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509159","url":null,"abstract":"HVDC cable accessories are key components of the future electricity transmission system. In the last three years, our team has been working on the research and development of HVDC cable accessories with a voltage level of 500 kV. Until the recently successfully passed type test, multiple failures have been experienced during R&D tests. This paper summarizes and analyses the recorded failures and may serve as a reference for future work on cable accessories design.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"63 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83868943","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509196
W. Ding, Yanliang He, A. Sun, Guanjun Zhang
This paper presents and compares the results of two simulation methods for negative corona current pulses in SF6 at 0.3 Mpa. A needle-plane electrode configuration is constructed in a 2D axisymmetric model using COMSOL Multiphysics®. The first model is constructed based on fluid dynamics and plasma chemical reactions. The second is a simplified fluid model which reduces the whole particles and reactions into three continuity equations of electrons, positive ions and negative ions. The results show that in the first simulation, the current pulse bears a close resemblance to that in experiment, with a magnitude of 1.31 mA and a pulse-width of 48.7 ns. The second simulation can also successfully simulate the current waveform, but there exists obvious deviation from experimental current pulses in numerical values. Based on the spatiotemporal distribution of mean electron energy and charged particles, the mechanism of pulse formation is analyzed.
{"title":"Two methods of simulating corona current pulses in SF6 under negative DC voltage","authors":"W. Ding, Yanliang He, A. Sun, Guanjun Zhang","doi":"10.1109/ICEMPE51623.2021.9509196","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509196","url":null,"abstract":"This paper presents and compares the results of two simulation methods for negative corona current pulses in SF6 at 0.3 Mpa. A needle-plane electrode configuration is constructed in a 2D axisymmetric model using COMSOL Multiphysics®. The first model is constructed based on fluid dynamics and plasma chemical reactions. The second is a simplified fluid model which reduces the whole particles and reactions into three continuity equations of electrons, positive ions and negative ions. The results show that in the first simulation, the current pulse bears a close resemblance to that in experiment, with a magnitude of 1.31 mA and a pulse-width of 48.7 ns. The second simulation can also successfully simulate the current waveform, but there exists obvious deviation from experimental current pulses in numerical values. Based on the spatiotemporal distribution of mean electron energy and charged particles, the mechanism of pulse formation is analyzed.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"132 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89122394","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}
In order to meet the requirement of high repetitive operation of Marx generator, which is normally restricted by the ablation and self-breakdown problems of three-electrode spark-gap switches, a modular over-voltage trigger device for two-electrode spark-gap switches is designed in this paper. The proposed two-electrode spark-gap switches are designed on the basis of an eight-level inductive isolated Marx generator. Numerical simulations and experiments are carried out for a single stage over-voltage trigger device, respectively. The influence of the transformer parameters, pulse width, and peak value of output voltage on the trigger waveform is discussed. Furthermore, the overall simulation model of the Marx-generator triggered using over-voltage triggering method is established. The results show that trigger waveforms with amplitude of 5.8 kV, front edge of 160 ns, and half-width of $1.8 mumathrm{s}$ are achieved for a single stage trigger when the input voltage is 220 V. A programmable SiC MOSFET driver circuit based on FPGA platform is designed and will be used in the following study of the device.
{"title":"A Modular Over-voltage Trigger Device for Two-electrode Spark-gap Switches","authors":"Xuedi Liu, Zicheng Zhang, Huibo Zhang, Haoran Zhang, Shifei Liu, Longchun Yan","doi":"10.1109/ICEMPE51623.2021.9509071","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509071","url":null,"abstract":"In order to meet the requirement of high repetitive operation of Marx generator, which is normally restricted by the ablation and self-breakdown problems of three-electrode spark-gap switches, a modular over-voltage trigger device for two-electrode spark-gap switches is designed in this paper. The proposed two-electrode spark-gap switches are designed on the basis of an eight-level inductive isolated Marx generator. Numerical simulations and experiments are carried out for a single stage over-voltage trigger device, respectively. The influence of the transformer parameters, pulse width, and peak value of output voltage on the trigger waveform is discussed. Furthermore, the overall simulation model of the Marx-generator triggered using over-voltage triggering method is established. The results show that trigger waveforms with amplitude of 5.8 kV, front edge of 160 ns, and half-width of $1.8 mumathrm{s}$ are achieved for a single stage trigger when the input voltage is 220 V. A programmable SiC MOSFET driver circuit based on FPGA platform is designed and will be used in the following study of the device.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"264 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79720067","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509237
L. Yao, L. Ni, Huanlei Yu, Qi Ding, Jianmin Zhang, Jiangming Zhang, An Wen
In view of the large amount of data in the low-voltage distribution network (LVDN) and the low efficiency of line loss analysis, this paper constructs an integrated decision-making platform for line loss online calculation and management based on situation awareness visualization technology. In this research, how to make full use of the existing system data to carry out the research on the intelligent diagnosis model of the line loss abnormality in the distribution network, and use the visualization method to realize the abnormality monitoring and automatically generate the loss reduction strategy is the goal of this article. First, through the user's electricity consumption data obtained from the electricity collection system; secondly, combine the user files of the marketing business application system, the geographic information of the GIS system and other data, and use big data analysis technology to realize the analysis and application of multi-source system data integration; Finally, develop main functions such as automatic identification of LVDN topology, online calculation and monitoring of line loss, situation awareness visualization of line loss in LVDN, intelligent diagnosis of line loss abnormalities and recommendation of loss reduction strategies. Applying human-computer interaction of situation awareness and visualization and abnormal diagnosis intelligence, intuitively and accurately display the line loss management problems in the distribution network. Through the test of specific examples, the effectiveness of the decision-making platform is verified.
{"title":"Integrated decision-making for line loss online calculation and management based on situation awareness visualization","authors":"L. Yao, L. Ni, Huanlei Yu, Qi Ding, Jianmin Zhang, Jiangming Zhang, An Wen","doi":"10.1109/ICEMPE51623.2021.9509237","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509237","url":null,"abstract":"In view of the large amount of data in the low-voltage distribution network (LVDN) and the low efficiency of line loss analysis, this paper constructs an integrated decision-making platform for line loss online calculation and management based on situation awareness visualization technology. In this research, how to make full use of the existing system data to carry out the research on the intelligent diagnosis model of the line loss abnormality in the distribution network, and use the visualization method to realize the abnormality monitoring and automatically generate the loss reduction strategy is the goal of this article. First, through the user's electricity consumption data obtained from the electricity collection system; secondly, combine the user files of the marketing business application system, the geographic information of the GIS system and other data, and use big data analysis technology to realize the analysis and application of multi-source system data integration; Finally, develop main functions such as automatic identification of LVDN topology, online calculation and monitoring of line loss, situation awareness visualization of line loss in LVDN, intelligent diagnosis of line loss abnormalities and recommendation of loss reduction strategies. Applying human-computer interaction of situation awareness and visualization and abnormal diagnosis intelligence, intuitively and accurately display the line loss management problems in the distribution network. Through the test of specific examples, the effectiveness of the decision-making platform is verified.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85555563","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509193
J. Dong, B. Du, J. Li, H. C. Liang, H. Yao, Y. Chen
A multi-physics simulation model of the tri-post insulator in ± 800kV GIL laid horizontally is established. Based on the model, the temperature and gas flow distribution inside the GIL are obtained. The surface charge and electric field on the tri-post insulator surface are calculated considering the gas convection. Results show that the maximum temperature gradient reaches 29 K and the gas dielectric strength decreases by 11%. While the greater temperature gradient along the lower post leads to more surface charge injection through insulator buck conduction, which results in more serious electric field. The flashover is more likely to be triggered around the lower post of the tri-post insulator. It is hoped that this study can contribute a useful guide for the design and manufacture of DC-GIL.
{"title":"Surface Charge and Electric Field Distribution along Tri-post Insulators in ±800 kV GIL","authors":"J. Dong, B. Du, J. Li, H. C. Liang, H. Yao, Y. Chen","doi":"10.1109/ICEMPE51623.2021.9509193","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509193","url":null,"abstract":"A multi-physics simulation model of the tri-post insulator in ± 800kV GIL laid horizontally is established. Based on the model, the temperature and gas flow distribution inside the GIL are obtained. The surface charge and electric field on the tri-post insulator surface are calculated considering the gas convection. Results show that the maximum temperature gradient reaches 29 K and the gas dielectric strength decreases by 11%. While the greater temperature gradient along the lower post leads to more surface charge injection through insulator buck conduction, which results in more serious electric field. The flashover is more likely to be triggered around the lower post of the tri-post insulator. It is hoped that this study can contribute a useful guide for the design and manufacture of DC-GIL.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"34 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75471166","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}
Pub Date : 2021-04-11DOI: 10.1109/ICEMPE51623.2021.9509074
Jiacheng Li, Daosheng Liu, Peng Li
With the requirement of high efficiency and low cost for distribution transformer, amorphous metal distribution transformer (AMDT), fabricated by employing amorphous alloy strip as the core, shows a great developmental potential in power equipment industry. However, due to the disadvantages of large magnetostriction and excessive sensitive to stress, the AMDT core can not be fully clamped, which leads to higher vibration magnitude than silicon steel one. The core vibration characteristic analysis environment is a typical multi-physical field, and many researchers tried to calculate the magnetic and dynamic parameters by FEA, but the simulation results are not convinced because of lacking experimental verification. In this paper, a 3-D model of AMDT core was established, and the magnetic flux density and electromagnetic force were calculated by coupling analysis of electromagnetic and mechanical field. To verify the simulation results, a vibration testing platform of the AMDT core was built, and the piezoelectric vibration acceleration sensor were adopted to obtain the vibration signals. The experiment results show that the vibration intensity at upper yoke is larger than other area, which is consistent with the simulation result.
{"title":"Characteristics Analysis and Experimental Verification of Amorphous Metal Distribution Transformer Core Vibration Coupled by Electromagnetic - Mechanical Field","authors":"Jiacheng Li, Daosheng Liu, Peng Li","doi":"10.1109/ICEMPE51623.2021.9509074","DOIUrl":"https://doi.org/10.1109/ICEMPE51623.2021.9509074","url":null,"abstract":"With the requirement of high efficiency and low cost for distribution transformer, amorphous metal distribution transformer (AMDT), fabricated by employing amorphous alloy strip as the core, shows a great developmental potential in power equipment industry. However, due to the disadvantages of large magnetostriction and excessive sensitive to stress, the AMDT core can not be fully clamped, which leads to higher vibration magnitude than silicon steel one. The core vibration characteristic analysis environment is a typical multi-physical field, and many researchers tried to calculate the magnetic and dynamic parameters by FEA, but the simulation results are not convinced because of lacking experimental verification. In this paper, a 3-D model of AMDT core was established, and the magnetic flux density and electromagnetic force were calculated by coupling analysis of electromagnetic and mechanical field. To verify the simulation results, a vibration testing platform of the AMDT core was built, and the piezoelectric vibration acceleration sensor were adopted to obtain the vibration signals. The experiment results show that the vibration intensity at upper yoke is larger than other area, which is consistent with the simulation result.","PeriodicalId":7083,"journal":{"name":"2021 International Conference on Electrical Materials and Power Equipment (ICEMPE)","volume":"11 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82217793","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}
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