2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)最新文献_第2页

Research on Transient Pressure Fault of High-voltage Transformer Bushing 高压变压器套管暂态压力故障研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961540

Hang Zhang, Zhaotao Zhang, Huiya Zhong, Dexun Huang, Wentao Zhang, Jie Yang, T. Jiang

{"title":"Research on Transient Pressure Fault of High-voltage Transformer Bushing","authors":"Hang Zhang, Zhaotao Zhang, Huiya Zhong, Dexun Huang, Wentao Zhang, Jie Yang, T. Jiang","doi":"10.1109/ICHVE53725.2022.9961540","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961540","url":null,"abstract":"This paper first discusses the fault types of high voltage insulation bushings, and analyzes the mechanism of pressure fault. Then, the transient model of fault pressure propagation of high-voltage insulation casing is established. By using the finite element analysis method, the transient pressure distribution that the fault energy increases the internal pressure of the casing is simulated and calculated when the discharge fault occurs inside the casing. Then the research of graphene pressure sensor was carried out, and the graphene pressure sensor based on paper carrier was developed by thermal reduction method. The microscopic morphology of graphene attached to the carrier was observed by scanning electron microscope, and the hole structure of graphene attached to the carrier was large area, which ensured the good performance of the device. The test results show that when the internal pressure of the casing reaches the set threshold pressure, the graphene pressure sensor can stably detect the pressure change and realize the pressure classification alarm. By comparing with the actual pressure value, the accuracy of the graphene pressure sensor developed in this paper is also proved.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114249089","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

Dielectric Properties of Crosslinked Polypropylene by Gamma-ray Irradiation for Film Capacitor 射线辐照交联聚丙烯薄膜电容器的介电性能

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.10014486

M. Xiao, Y. N. Song, B. Du

引用次数: 0

Control Method for Improving the Robustness of Grid-Connected Inverter in High Voltage Power System 提高高压电力系统并网逆变器鲁棒性的控制方法

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961785

Yu-ting Gu, Hong-yu Ni, Haiwen Wu, Feng Zhao, Wen-xu Yan

{"title":"Control Method for Improving the Robustness of Grid-Connected Inverter in High Voltage Power System","authors":"Yu-ting Gu, Hong-yu Ni, Haiwen Wu, Feng Zhao, Wen-xu Yan","doi":"10.1109/ICHVE53725.2022.9961785","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961785","url":null,"abstract":"In high-voltage and high-power systems, LCL filter is been widely used because its small filter inductance, which can effectively reduce the system volume and loss. When the power grid frequency fluctuates, the LCL inverter with traditional repetitive control CRC has the problem of decreasing the dynamic response speed and deviating the resonant frequency from the actual frequency. Because the problem that the existing inverter control strategy can not adapt to the frequency fluctuation of power grid quickly and accurately under the digital control system must be solved, a beat free repeat control strategy based on frequency self-adaptation was proposed. At the beginning, this paper gives the electrical topology. At the same time analysis its mathematical model under high voltage system. Moreover, the weighted average current (WAC) based deadbeat (DB) control is proposed in the current inner loop to make the system easy to analysis. Furthermore, in order to effectively suppress the disturbance, the plug-in repetitive controller is added to the aforementioned controller lowers the total harmonic distortion (THD) and make sure the stability of the LCL inverter. Finally, the simulation demonstrates that the proposed control method can greatly simplify the synthesis of inverter current controller, make the resonance peak under a low level, ensure the accuracy and rapidity of the controller, and provide a good and stable current control scheme for the LCL inverter under high voltage power system.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128736618","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

Fault Pattern Recognition Based on Internal Pressure Distribution of Oil-immersed Transformer 基于油浸式变压器内部压力分布的故障模式识别

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961370

Y. Feng, E. Gao, C. Gao, Z. Yang, B. Song, Q. Li

引用次数: 0

Core Loss Calculation and Temperature Distribution Simulation of Saturable Reactor for Converter Valves 转炉阀饱和电抗器堆芯损耗计算及温度分布模拟

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961814

Yansheng Zou, Zhen Wang, Kai Xiao, Ning Liang, Xilin Yan, Yong Feng, Xuetong Zhao, L. Cheng, Yilong Huang

{"title":"Core Loss Calculation and Temperature Distribution Simulation of Saturable Reactor for Converter Valves","authors":"Yansheng Zou, Zhen Wang, Kai Xiao, Ning Liang, Xilin Yan, Yong Feng, Xuetong Zhao, L. Cheng, Yilong Huang","doi":"10.1109/ICHVE53725.2022.9961814","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961814","url":null,"abstract":"Saturable reactor is a key equipment of HVDC transmission, and its insulation failure will severely affect the safe operation of the converter valve. For the cause of studying the loss and temperature distribution of the core-type saturable reactor, a simulation model of the saturable reactor is established using COMSOL Multiphysics software. Taking the instantaneous current of 3000 A under the full load as the excitation source, the loss distribution of the core is obtained. Afterwards, the loss density distribution is taken as the heat source of the temperature field. The electromagnetic thermal simulation model of the saturable reactor is built to analyze its temperature distribution. The results show that the loss of the core inside is higher, and the loss at the upper and lower ends is lower than that in the middle. It is found that the highest temperature of the core is 62.2 °C. The inner temperature of the core is higher than that of the outer part. The results can provide a reference for the heat dissipation improvement of the core-type saturable reactor.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129170054","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

Condition Assessment of Transformer Winding Through the Granular Complex Network of Vibration Signals 基于振动信号颗粒复杂网络的变压器绕组状态评估

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961763

S. Wang, G. Qian, W. Dai, Z. Hong, J. Ma, F. H. Wang

引用次数: 0

The Accumulation Characteristic for Surface Charge on the GIL three-pillar insulator under AC Voltage 交流电压下GIL三柱绝缘子表面电荷的积累特性

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961594

Weiguo Li, Ming-yang Li, Chang-Hong Zhang, Xu Yang, Xiang Peng, B. Qi, C. Gao, Boya Zhang

{"title":"The Accumulation Characteristic for Surface Charge on the GIL three-pillar insulator under AC Voltage","authors":"Weiguo Li, Ming-yang Li, Chang-Hong Zhang, Xu Yang, Xiang Peng, B. Qi, C. Gao, Boya Zhang","doi":"10.1109/ICHVE53725.2022.9961594","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961594","url":null,"abstract":"The research on surface charge accumulation characteristics are mainly focused on plate samples and basin insulator, and there are few reports on the surface charge accumulation characteristic on the GIL three-pillar insulator. Based on actual 550kV GIL three-pillar insulator, a three-dimensional(3D) surface charge measurement test platform utilizing the capacitive probe has been set up in this paper. The surface charge accumulation characteristic on the GIL three-pillar insulator are carried on different conditions such as voltage amplitude,test duration and surface roughness. The results show that there are surface charge accumulation phenomenon on the GIL three-pillar insulator under AC voltage. The amplitude of accumulation negative charge is larger than that of positive ones. The charge density accumulated in the pillar region was lower, while the charge density accumulated in the abdomen region was higher. With the amplitude and the duration of applied voltage increasing, the accumulated surface charge density of the insulator increases gradually. With the roughness of insulators increasing, the accumulated surface charge density of the insulator increases gradually as well. Under certain conditions, the insulator surface flashover voltage decreases by about 9.6%,with the accumulation of surface charge under AC voltage. The research results are helpful to the design optimization and maintenance of GIL three-pillar insulator.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129533333","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

Research on Electromagnetic Transient Model and Control Strategy of Dual Active Bridge Considering Transformer Core Nonlinearity 考虑变压器铁心非线性的双有源电桥电磁暂态模型及控制策略研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961417

Luoping Jiang, Gang Li, Ming Yang, W. Sima, Xiaofeng Wang, Shuai Ding

{"title":"Research on Electromagnetic Transient Model and Control Strategy of Dual Active Bridge Considering Transformer Core Nonlinearity","authors":"Luoping Jiang, Gang Li, Ming Yang, W. Sima, Xiaofeng Wang, Shuai Ding","doi":"10.1109/ICHVE53725.2022.9961417","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961417","url":null,"abstract":"Dual active bridge (DAB) converters have been widely used in distributed power systems and energy storage equipment. Due to the difference in the characteristics of power electronic devices, sudden changes in load, and changes in power flow, the volt-second balance of the phase-shifted inductor is broken. The sudden change of the phase-shift angle will cause a DC component in the inductor current, which will increase the current stress of the power electronic device. Meanwhile, as the frequency of the switching device increases, the working frequency of the transformer in the DAB also increases, the DC resistance in the high-frequency transformer is small, and the DC component will saturate the transformer when it flows through the transformer. It is necessary to study the suppression measures for the DC component, the parameters of the transformer will change with the degree of saturation, so the accurate modeling of the transformer is necessary for the study of the control strategy. Firstly, obtain the leakage inductance, excitation inductance, resistance and other parameters of the transformer, build a dual active bridge test platform, then obtain the electrical characteristics of the transformer port under the conditions of sudden load changes and power flow changes. Finally Build a model and simulate.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129676381","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

Comparative Analysis of Partial Discharge and Mechanical Vibration Characteristics under Loose Bus Base with Foreign Body Defect of GIS GIS有异物缺陷的松散母线底座局部放电及机械振动特性对比分析

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.9961332

Jian Hao, Yi-ming Ding, Ying Li, Xu Li, Xiping Jiang, Huadong Peng

{"title":"Comparative Analysis of Partial Discharge and Mechanical Vibration Characteristics under Loose Bus Base with Foreign Body Defect of GIS","authors":"Jian Hao, Yi-ming Ding, Ying Li, Xu Li, Xiping Jiang, Huadong Peng","doi":"10.1109/ICHVE53725.2022.9961332","DOIUrl":"https://doi.org/10.1109/ICHVE53725.2022.9961332","url":null,"abstract":"The mechanical defect of GIS equipment is important factor that endangers the safe and stable operation of GIS equipment. In order to explore the partial discharge and vibration signal characteristics of GIS equipment under mechanical defects, this paper carried out the setting of loose bus base with foreign body defect based on the 550 kV GIS mechanical defect simulation platform. Partial discharge and mechanical vibration signal detection were carried out. The discharge and vibration characteristics of mechanical defect under different voltages and currents were compared and analyzed, and the mechanism was explained. The results show that, the loose bus base with foreign body defect of GIS can cause partial discharge and abnormal mechanical vibration. The amplitude of discharge signal increases with the increase of voltage and presents the characteristics of free particle discharge. The vibration signal is mainly composed of 100Hz frequency components, and the 100Hz amplitude will increase with the increase of voltage and current. The vibration signal contains 1000–1300 Hz harmonic component, but there is no discharge vibration characteristic. The conclusion of this paper can provide reference for multi-parameter joint fault detection of operating GIS equipment.","PeriodicalId":125983,"journal":{"name":"2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129852395","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 the measurement of space charge mobility in liquid dielectric based on the Kerr effect 基于克尔效应的液体介质空间电荷迁移率测量研究

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) Pub Date : 2022-09-25 DOI: 10.1109/ICHVE53725.2022.10014488

Zhaotian Zhang, Q. Yang, Shilin Wu, W. He

引用次数: 0