2023 IEEE 6th International Electrical and Energy Conference (CIEEC)最新文献_第9页

Simulation and Analysis of Seismic Performance of Mechanical DC Circuit Breaker Based on Time History Analysis 基于时程分析的机械直流断路器抗震性能仿真与分析

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166664

Can Ding, Yifan Liu, Jinqi Li

引用次数: 0

Identification Modeling of Frequency-Coupling Admittance for Grid-Connected Inverter Under All Operating Conditions 并网逆变器全工况频率耦合导纳辨识建模

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166656

Zilin Zhang, Wenhua Wu, Zhiwei Xie, Yandong Chen, Shixiang Cao, Cong Luo

{"title":"Identification Modeling of Frequency-Coupling Admittance for Grid-Connected Inverter Under All Operating Conditions","authors":"Zilin Zhang, Wenhua Wu, Zhiwei Xie, Yandong Chen, Shixiang Cao, Cong Luo","doi":"10.1109/CIEEC58067.2023.10166656","DOIUrl":"https://doi.org/10.1109/CIEEC58067.2023.10166656","url":null,"abstract":"The control structure and parameters of the grid-connected inverter in actual projects are usually unknown, which results in the “black-box” phenomenon. The traditional impedance modeling method is not suitable for the black-box. In this paper, a black-box identification method for the admittance of grid-connected inverters under all operating conditions considering frequency-coupling is proposed. Firstly, accurate discrete admittance data are acquired by the frequency-coupling admittance measurement. Then, the vector fitting (VF) is applied to identify the frequency-coupling admittance under a single operating condition. The black-box models identified by VF are combined with the weighting function to obtain the black-box admittance model of the grid-connected inverter under all operating conditions. Finally, the effectiveness and accuracy of the method are verified via MATLAB/Simulink. The results show that the method introduced in this paper not only can obtain the black-box admittance model under all operating conditions simply through several groups of admittance data, but also has the advantages of efficiency and high accuracy.","PeriodicalId":185921,"journal":{"name":"2023 IEEE 6th International Electrical and Energy Conference (CIEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124237499","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

Diagnosis Method for Thermal Aging and Water Tree Aging of Insulation Based on Lissajous Figure and Current Harmonic Characteristic Quantity 基于Lissajous图和电流谐波特征量的绝缘热老化和水树老化诊断方法

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10167312

G. Lv, Wei Wang, Zongyuan Luo, Ke Li, Yujin Li, Yuan Xia, Jiajun Li, Hao Yang

{"title":"Diagnosis Method for Thermal Aging and Water Tree Aging of Insulation Based on Lissajous Figure and Current Harmonic Characteristic Quantity","authors":"G. Lv, Wei Wang, Zongyuan Luo, Ke Li, Yujin Li, Yuan Xia, Jiajun Li, Hao Yang","doi":"10.1109/CIEEC58067.2023.10167312","DOIUrl":"https://doi.org/10.1109/CIEEC58067.2023.10167312","url":null,"abstract":"Power cables are one of the most important devices in the power system. In order to diagnose the aging state of XLPE cable insulation, this paper carried out 90°C, 120°C, 150°C accelerated thermal aging experiments and accelerated water tree aging experiments on the cable section samples in the laboratory, tested and analyzed the changing laws of $tandelta-f$ curves, Lissajous figures and current harmonic content of different samples. The experimental results show that for the cable section samples with internal water tree aging, the Lissajous figure inclination angle is significantly larger than that of the thermal aging samples, and the harmonic component of the current is mainly within tenth order. With the increase of aging time, the characteristics will be more obvious, so the ageing type of the cable can be distinguished. At the same time, the minor axis length of the Lissajous figure and the harmonic distortion within the tenth order THD10 have a good correlation with the $tandelta$ of the cable, which can be used to judge the aging degree of the cable.","PeriodicalId":185921,"journal":{"name":"2023 IEEE 6th International Electrical and Energy Conference (CIEEC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114394418","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

Influencing factors of induced voltage and power loss of OPGW in typical T-connection distribution network 典型t型配电网OPGW感应电压和功率损耗的影响因素

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166784

Qingbin Wang, Danxing Li, Xiansen Liang, Zudi Huang, Guishen Liang, Zizhong Ye, Yuxi Wang, Siliang Suo, Kaitian Huang

{"title":"Influencing factors of induced voltage and power loss of OPGW in typical T-connection distribution network","authors":"Qingbin Wang, Danxing Li, Xiansen Liang, Zudi Huang, Guishen Liang, Zizhong Ye, Yuxi Wang, Siliang Suo, Kaitian Huang","doi":"10.1109/CIEEC58067.2023.10166784","DOIUrl":"https://doi.org/10.1109/CIEEC58067.2023.10166784","url":null,"abstract":"OPGW in distribution network has both communication and lightning protection functions. Under the electromagnetic coupling of three-phase power lines, OPGW will generate induced voltage and induced current, which threatens the safety of power operation and maintenance personnel. In this paper, the typical 10 kV multi-circuit distribution line with OPGW is taken as the prototype, and the electromagnetic coupling model of 10 kV multi-circuit distribution line with OPGW is built by ATP-EMTP software. Considering the number of lines, the grounding mode of OPGW and the T-connected branch line, the influence of different operation modes on the induced voltage, induced current and power loss of OPGW on distribution line is compared and analyzed. The simulation results show that the number of lines and the grounding mode of OPGW have a great influence on the induced voltage and power loss. And there is basically no effect between the T-connected branch line and the main line. The simulation results provide a theoretical basis for the selection of OPGW parameters of 10 kV multi-circuit distribution lines.","PeriodicalId":185921,"journal":{"name":"2023 IEEE 6th International Electrical and Energy Conference (CIEEC)","volume":"362 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114844518","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

Identification Method for LVRT Control Parameters of Type-3 wind turbine Based on Short-Circuit Fault Frequency Model 基于短路故障频率模型的3型风力机LVRT控制参数辨识方法

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166085

Haohan Cui, P. Chao, Xiao-dong Cui, Xinyuan Liu, Weixin Li

{"title":"Identification Method for LVRT Control Parameters of Type-3 wind turbine Based on Short-Circuit Fault Frequency Model","authors":"Haohan Cui, P. Chao, Xiao-dong Cui, Xinyuan Liu, Weixin Li","doi":"10.1109/CIEEC58067.2023.10166085","DOIUrl":"https://doi.org/10.1109/CIEEC58067.2023.10166085","url":null,"abstract":"Accurately modeling the low voltage ride through (LVRT) fault characteristics of type-3 wind turbine is crucial for ensuring the safety and stability of high-proportion new energy power systems. However, identifying the controller parameters of the main external characteristics of type-3 wind turbine presents a significant engineering challenge, given the black box of manufacturer converter controller parameters. Existing identification methods have several limitations, including low identification accuracy and unrealistic identification scenarios. This paper proposes a new step identification method based on the short-circuit fault frequency model. The LVRT control strategy parameters are identified based on the output dynamic characteristics of type-3 wind turbine and the generalized LVRT control strategy. The short-circuit fault frequency model proposed in this paper is used to identify the controller parameters. Finally, the accuracy of the proposed method is verified by simulation examples. The results indicate that the proposed method has high accuracy and is suitable for practical engineering applications.","PeriodicalId":185921,"journal":{"name":"2023 IEEE 6th International Electrical and Energy Conference (CIEEC)","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114370825","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

The Improved Carbon Flow Calculation and Tracing in the Distribution System 配电网中改进的碳流计算与溯源

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166166

Zhao Liang, Yang Junyi, Jin Cheng, Zhang Ying

引用次数: 0

Research on Circulation Current of Sheath and Armor of Single-core Submarine Cable Based on Impedance Matrix Analysis 基于阻抗矩阵分析的单芯海底电缆护套和护甲环流研究

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166783

Yuxin Yang, Ziye Huang, Yongli Zhu

引用次数: 0

Research on Direct Coordinate Vector Modulation Strategy for Matrix-Converter-Based Transforms 基于矩阵变换器的直接坐标矢量调制策略研究

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166543

Lingfeng Xiao, Shihong Shi, Weihan Hao, Guanyan Peng, W. Xie, Zhongjian Song

{"title":"Research on Direct Coordinate Vector Modulation Strategy for Matrix-Converter-Based Transforms","authors":"Lingfeng Xiao, Shihong Shi, Weihan Hao, Guanyan Peng, W. Xie, Zhongjian Song","doi":"10.1109/CIEEC58067.2023.10166543","DOIUrl":"https://doi.org/10.1109/CIEEC58067.2023.10166543","url":null,"abstract":"To address the issues of high computational complexity and harmonic content associated with Indirect Space Vector Modulation (ISVM) strategy in matrix-converter-based transforms, this paper proposes a Direct Coordinate Vector Modulation (DCVM) strategy based on geometric area calculation. The proposed strategy represents the system input and output voltages in the form of vector coordinates, and converts duty-cycle calculations into triangle area ratio calculations. Unlike traditional modulation strategies, this strategy does not require the introduction of angles and trigonometric functions in duty-cycle calculations, reducing computational complexity. Moreover, the proposed strategy only requires six commutations per modulation cycle, effectively reducing switching losses and improving waveform quality. A simulation model based on Matlab/Simulink is used to compare the proposed strategy with ISVM strategy, verifying that the proposed strategy has the characteristics of fast response and high waveform quality. Finally, experimental results further confirm the feasibility of the DCVM strategy.","PeriodicalId":185921,"journal":{"name":"2023 IEEE 6th International Electrical and Energy Conference (CIEEC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114925962","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

Magnetic Integrated Five-phase LLC Resonant Converter for Offshore Wind Power System 海上风电系统磁集成五相LLC谐振变换器

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166291

Jianing Wang, Dianli Fu, W. Pei, Zhiqing Yang

{"title":"Magnetic Integrated Five-phase LLC Resonant Converter for Offshore Wind Power System","authors":"Jianing Wang, Dianli Fu, W. Pei, Zhiqing Yang","doi":"10.1109/CIEEC58067.2023.10166291","DOIUrl":"https://doi.org/10.1109/CIEEC58067.2023.10166291","url":null,"abstract":"In the offshore wind power generation system, the high voltage DC (HVDC) system is an important scheme for the long-distance transmission of electric energy. Modular isolated DCDC converter, such as half bridge LLC converter, are connected in series to improve the voltage and power level of system. With the capacity improvement of offshore wind power generation system, isolated DCDC module with higher power density are needed to reduce the volume cost of the system. In this paper, a modular five-phase LLC converter (FPLLC) is proposed. Combined with the higher operating frequency and the advanced transformer magnetic integration technology, the volume of the transformer can be further reduced and the power density of the module can be improved. Based on the first harmonic approximation (FHA), the working principle of FPLLC is analyzed. A parameter design process of FPLLC with the fixed gain characteristic is described. A 3kW prototype proves the feasibility of the proposed FPLLC scheme. The typical frequency modulation experiment shows that the FPLLC scheme can run stably and be used in practice.","PeriodicalId":185921,"journal":{"name":"2023 IEEE 6th International Electrical and Energy Conference (CIEEC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115117407","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

Active Suppression Technology of Common-Mode Electromagnetic Interference in Three-Phase Two-Level Inverter Based on Four-Bridge Topology 基于四桥拓扑的三相二电平逆变器共模电磁干扰主动抑制技术

2023 IEEE 6th International Electrical and Energy Conference (CIEEC) Pub Date : 2023-05-12 DOI: 10.1109/CIEEC58067.2023.10166504

Wu Zhou, Yuhang Yao, X. Chen

引用次数: 0