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2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)最新文献

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A Novel Partial Discharge Localization Method in Transformer based on Signal Propagation in Winding 基于绕组中信号传播的变压器局部放电定位新方法
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708147
Yuqi Jin, Bowen Zhang, H. Mu, Yiming Zheng, Jiansvans Zhan, Shao Xianjun, Chen Li, Chi Zhang, Guanjun Zhang
{"title":"A Novel Partial Discharge Localization Method in Transformer based on Signal Propagation in Winding","authors":"Yuqi Jin, Bowen Zhang, H. Mu, Yiming Zheng, Jiansvans Zhan, Shao Xianjun, Chen Li, Chi Zhang, Guanjun Zhang","doi":"10.1109/AEERO52475.2021.9708147","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708147","url":null,"abstract":"Partial discharge is one of the important causes of transformer faults. The detection and localization of partial discharges in transformers are of great significance to ensure the safe operation of power systems. The finite element model of the transformer winding was built, lumped parameters of the transformer winding were solved by the finite element method. The equivalent circuit with two disks as the unit of transformer winding was established, and the propagation principle of the pulse signals excited by main insulation partial discharge and longitudinal insulation partial discharge were studied. Research showed that the signals of the main insulation partial discharge received at both ends of the winding were of the same polarity, and the pulse amplitude attenuated with the increase of the propagation distance. The localization of the main insulation partial discharge could be realized by calculating the proportion of energy in the middle-frequency region; The longitudinal insulation partial discharge signals received at both ends of the winding were of different polarity, and the pulse amplitude hardly attenuated with the increase of the propagation distance. the Localization of the longitudinal insulation partial discharge could be realized by calculating the arrival time of the first peak of the pulse. This study provided a new method of electrical localization of the partial discharge in transformer","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"2017 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73913675","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 DC Conductivity Characteristics of Polypropylene Laminated Paper 聚丙烯层压纸直流导电性的研究
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708160
G. Zhou, Hong Zheng, Hao Du, Qilong Wang, Xiangrong Chen
{"title":"Study on DC Conductivity Characteristics of Polypropylene Laminated Paper","authors":"G. Zhou, Hong Zheng, Hao Du, Qilong Wang, Xiangrong Chen","doi":"10.1109/AEERO52475.2021.9708160","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708160","url":null,"abstract":"DC electric field analysis should be carried out for the insulation design of dc high-temperature superconducting (HTS) equipment. For that purpose, the conductivity of PPLP was measured under room temperature and liquid-nitrogen temperature. The testing results show that the conductivity of single PPLP is 2.02 × 10-15 S/m at liquid-nitrogen temperature and 2.86 × 10-15 S/m at room temperature. The threshold electric field of PPLP insulation at liquid-nitrogen temperature and room temperature is 17.5 kV/mm. When the applied electric field is lower than 17.5 kV/mm, the conductivity of PPLP does not change with the electric field strength. When the applied electric field is higher than 17.5 kV/mm, the conductivity of PPLP increases with the electric field strength. Different layers of PPLP have the same electric field threshold, but the conductivity is not the same.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"1 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75475531","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
Calculation and Analysis of The Radial Short-circuit Electromotive Force of The Converter Transformer Winding 换流变压器绕组径向短路电动势的计算与分析
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708164
Zhong-cheng Zhao, Guan Wang, Suxian Liu, Liangkai Wang, Hongbin Wu
{"title":"Calculation and Analysis of The Radial Short-circuit Electromotive Force of The Converter Transformer Winding","authors":"Zhong-cheng Zhao, Guan Wang, Suxian Liu, Liangkai Wang, Hongbin Wu","doi":"10.1109/AEERO52475.2021.9708164","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708164","url":null,"abstract":"For a 530KV/406MVA single-phase dual-winding converter transformer, according to its actual operating circuit, set a three-phase short-circuit fault to obtain the maximum short-circuit current. The finite element software comsol is used to build a two-dimensional axisymmetric model of the transformer, the leakage magnetic density and radial short-circuit electromotive force of the high and low voltage windings are obtained, and the radial steady-state check of the converter transformer is performed. The calculation and analysis results show that the model and calculation method can realize the calculation of the radial short-circuit force of the windings of the converter transformer and the calculation of the radial mechanical strength.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"25 2 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77388313","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
Weighted power network node importance evaluation based on node deletion method 基于节点删除法的加权电网节点重要性评价
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708192
Xiuting Sun, Shumin Zhao, Yonggang Li
{"title":"Weighted power network node importance evaluation based on node deletion method","authors":"Xiuting Sun, Shumin Zhao, Yonggang Li","doi":"10.1109/AEERO52475.2021.9708192","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708192","url":null,"abstract":"In order to improve fault tolerance and reliability of power grid, node importance of weighted power grid is evaluated based on node deletion method. The IEEE-24 system is simulated, and the corresponding program is written by MATLAB to calculate the ratio of the average weighted path length of nodes. Finally, it is proved that this method is more accurate to evaluate the dynamic security of power grid.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"142 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77443098","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
Establishment and Application of V-I and R-I Characteristic Equations of MOV MOV的V-I和R-I特征方程的建立及应用
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708159
Qibin Zhou, Ting Cao, Xin Huang, Nanfa Zhan, Yabin Liu, Bin Shao
{"title":"Establishment and Application of V-I and R-I Characteristic Equations of MOV","authors":"Qibin Zhou, Ting Cao, Xin Huang, Nanfa Zhan, Yabin Liu, Bin Shao","doi":"10.1109/AEERO52475.2021.9708159","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708159","url":null,"abstract":"Metal oxide varistor (MOV) has been widely used in power equipment to prevent the damage of overvoltage or overcurrent due to its excellent nonlinear characteristics. However, how to clearly describe the nonlinear characteristics of MOV has always been difficulties in the research of MOV. The equation suitable for describing the nonlinear characteristic of MOV and a method for measuring the parameters of the equation are presented in this paper. The characteristic equation can correctly express the actual characteristics of MOV within the range of $2sim 3$ orders of magnitude of current peak value change. In this paper, the measurement method of V-I and R-I characteristic equations of MOV is given by experiment. By comparing the voltage calculated by the equations with the measured value, the deviation is less than 3%, which proves the validity of the proposed characteristic equation. In addition, this paper introduces the application occasions and methods of the proposed characteristic equation.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"108 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79354961","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: 3
Research on The Lightning Performance of 500kV Composite Cross-arm Tower 500kV复合横臂塔防雷性能研究
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708142
Shenli Wang, Zirong Liao, Peng Liu, Li Huang
{"title":"Research on The Lightning Performance of 500kV Composite Cross-arm Tower","authors":"Shenli Wang, Zirong Liao, Peng Liu, Li Huang","doi":"10.1109/AEERO52475.2021.9708142","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708142","url":null,"abstract":"Nowadays, ultra-high voltage (UHV) transmission lines guarantee the stable supply of electric power. However, Lightning shielding failure is the main factor to threat the safety and reliability of UHV transmission lines. In order to assess the lightning resistance of composite UHV transmission towers, this paper compares the lightning resistance of composite cross-arm towers and steel cross-arm towers at the same conductor height based on typical electrical geometry model calculation principles, at the same time composite cross-arms with different tower heights and different protection angles are been analysed. The result shows that the lightning performance of composite cross-arm is basically the same as that of steel towers at the same conductor height. Because the tower height and protection angle can be reduced, the lightning resistance of composite cross-arms is better than that of steel towers.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"44 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84282401","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 Combination Scheme of Cable Laying and Fire Prevention Measures in High Voltage Cable Trench 高压电缆沟电缆敷设与防火措施结合方案的研究
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708253
Shibin Wang, Kai Zhu, Zhi Yao, Shouxin Zhao, Yan Chen, Zhiping Song
{"title":"Study on Combination Scheme of Cable Laying and Fire Prevention Measures in High Voltage Cable Trench","authors":"Shibin Wang, Kai Zhu, Zhi Yao, Shouxin Zhao, Yan Chen, Zhiping Song","doi":"10.1109/AEERO52475.2021.9708253","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708253","url":null,"abstract":"With the rapid development of power construction, the number of substations is increasing, the application of cable trench is more and more widely, and the fire safety of cable trench has been paid attention to. For exploring the influence of cable laying mode on cable fire spread in cable trench, eight kinds of combined scheme models of cable trench fire prevention were established. From three aspects of cable arrangement mode, cable layer spacing, and relative position of cable and fire barrier, the variation laws of temperature and gas concentration in cable trench with time after fire in different combination schemes were compared and analyzed to select the cable laying and fire prevention methods that were conducive to the safe operation of the cable trench. The research results show that the scheme of parallel arrangement and five layers arrangement of cables and laying the fireproof partition under the cable is conducive to reducing the loss of cable trench fire and restraining the spread of cable fire.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"48 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85015591","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
Application of Converter Transformer Defect Detection Based on Transformer Integrated Monitoring System 基于变压器综合监控系统的换流变压器缺陷检测应用
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708088
Xiu Zhou, Q. Zhang, Bo Wang, Yuhua Xu, Tian Tian, Yunlong Ma, Xiuguang Li, Ninghui He, Liang Li, Weiyan Sha
{"title":"Application of Converter Transformer Defect Detection Based on Transformer Integrated Monitoring System","authors":"Xiu Zhou, Q. Zhang, Bo Wang, Yuhua Xu, Tian Tian, Yunlong Ma, Xiuguang Li, Ninghui He, Liang Li, Weiyan Sha","doi":"10.1109/AEERO52475.2021.9708088","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708088","url":null,"abstract":"This paper introduces an abnormal oil color spectrum of converter transformer during commissioning of UHVDC transmission project. The application of transformer integrated monitoring system based on ultrasonic local discharge, UHF local discharge and high frequency local discharge integrated software and hardware is used to detect and locate the floating potential discharge defects of converter transformer. The rheologic voltage is carried out by endoscope to locate and other parts The method of in-chip inspection verifies the feasibility of the integrated monitoring system for finding similar discharge defects of converter transformer, and provides an effective detection method for fast and accurate detection of transformer defects.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"44 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84116653","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
Design and Ccomparison of Three Schemes of High Voltage Nanosecond Trigger 三种高压纳秒触发器方案的设计与比较
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708265
Yifan Wang, Hanliang Lin, Hongmei Gao, C. Kang, Hongshun Liu, Qizhao Zhang
{"title":"Design and Ccomparison of Three Schemes of High Voltage Nanosecond Trigger","authors":"Yifan Wang, Hanliang Lin, Hongmei Gao, C. Kang, Hongshun Liu, Qizhao Zhang","doi":"10.1109/AEERO52475.2021.9708265","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708265","url":null,"abstract":"In order to provide a Marx generator with pulses with a leading edge less than 30ns and a half-width greater than 200ns, the circuits of Marx generator type flip-flop, pulse transformer type flip-flop and capacitor fast discharge type flipflop are studied, and the effects of circuit parameters on output pulses are analyzed. On this basis, three kinds of triggers are designed and simulation models are established, and the optimal scheme is selected by comparing the simulation results.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"1 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78547811","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
Research on Key Parameters of Long-term Induced Withstand Voltage and Partial Discharge Test for ±800 kV Converter Transformer in Lingzhou and Interference Elimination of Partial Discharge 陵州±800 kV换流变压器长期感应耐压和局部放电试验关键参数及局部放电干扰消除研究
2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO) Pub Date : 2021-10-15 DOI: 10.1109/AEERO52475.2021.9708309
Xiu Zhou, Xin Yang, Xu-tao Wu, Tian Tian, W. Si, W. Chang, Xiaolin Zhao, Xingwang Wu, Xiuguang Li, Ninghui He
{"title":"Research on Key Parameters of Long-term Induced Withstand Voltage and Partial Discharge Test for ±800 kV Converter Transformer in Lingzhou and Interference Elimination of Partial Discharge","authors":"Xiu Zhou, Xin Yang, Xu-tao Wu, Tian Tian, W. Si, W. Chang, Xiaolin Zhao, Xingwang Wu, Xiuguang Li, Ninghui He","doi":"10.1109/AEERO52475.2021.9708309","DOIUrl":"https://doi.org/10.1109/AEERO52475.2021.9708309","url":null,"abstract":"During the tests of long-term induced withstand voltage on site and handover partial discharge for ± 800 kV UHV converter transformers in Lingzhou, in accordance with the requirements of the regulations and standards for the above tests, the differences between the two types of converter transformers with angle valve and star valve in the two tests were studied respectively. And the parameters of the configured test equipment were calculated and verified. Taking the converter transformer with star valve as an example, the paper elaborates in detail from the test principles, instruments used, parameter calculations and on-site tests, also summarizes the precautions of each link, verifies the applicability and generalization of the research, and provides methods for the interference elimination of the relevant partial discharge test in the electrification converter station with charged electrification.","PeriodicalId":6828,"journal":{"name":"2021 International Conference on Advanced Electrical Equipment and Reliable Operation (AEERO)","volume":"3 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2021-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73274001","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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