2023 IEEE International Conference on Power Science and Technology (ICPST)最新文献_第4页

A Reliability Model of Floating Offshore Wind Turbines Considering Structure Reliability and Output Characteristics under Environmental Conditions 考虑结构可靠性和输出特性的海上浮式风力机可靠性模型

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10164863

Siying Zhao, Xueying Yu, Jinfeng Ding, Bo Hu, Changzheng Shao, K. Xie

引用次数: 0

A Method of Faulty Line Selection for the Flexible Grounding System Based on the Parallel Resistance Identification 基于并联电阻辨识的柔性接地系统故障选线方法

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10165176

X. Q. Wang, W. Shao, Y. F. Zhao, Z. M. Li

{"title":"A Method of Faulty Line Selection for the Flexible Grounding System Based on the Parallel Resistance Identification","authors":"X. Q. Wang, W. Shao, Y. F. Zhao, Z. M. Li","doi":"10.1109/ICPST56889.2023.10165176","DOIUrl":"https://doi.org/10.1109/ICPST56889.2023.10165176","url":null,"abstract":"Aiming at the difficulty in selecting the fault lines when the high resistance grounding system of a distribution network, a method of faulty line selection for flexible grounding system based on parallel resistance identification is proposed. The relationship between each line's zero-sequence current and the bus's zero-sequence voltage are analyzed in detail after the parallel resistance was put into use, based on which an equivalent model with parallel resistance is established for each feeder. The characteristic differences between the faulty and sound feeders are reflected by deriving the parallel resistance parameters fitted to each feeder with the method of least squares. Faulty line selection criteria are formed by the feature that the fitted value of parallel resistance for which the faulty line is close to actual value and the sound line is much greater than the actual value. Simulation results of the MATLAB show that this method is suitable for the ground faults with a transition resistance less than 3000 ohms. It has rather high reliability under the different faulty conditions.","PeriodicalId":231392,"journal":{"name":"2023 IEEE International Conference on Power Science and Technology (ICPST)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132404965","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

A Sub-synchronous and Hyper-synchronous Risk Assessment Method for Direct-drive Wind Turbine Based on Dynamic Characteristics 基于动态特性的直驱风电机组次同步和超同步风险评估方法

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10165543

Shuxian Yi, Xie Huan, Tianzhi Cao, Peng Zhang

{"title":"A Sub-synchronous and Hyper-synchronous Risk Assessment Method for Direct-drive Wind Turbine Based on Dynamic Characteristics","authors":"Shuxian Yi, Xie Huan, Tianzhi Cao, Peng Zhang","doi":"10.1109/ICPST56889.2023.10165543","DOIUrl":"https://doi.org/10.1109/ICPST56889.2023.10165543","url":null,"abstract":"This paper proposes a sub-synchronous and hyper-synchronous risk assessment method for direct-drive wind turbine based on dynamic characteristics. Firstly, this paper establishes the linearization model of direct drive wind turbine and analyzes the influence of inner loop and outer loop control parameters of grid-side converter on oscillation mode, which points out that the oscillation mode is determined by the outer loop parameters of grid-side converter while the inner loop parameters have little effect. Secondly, based on dominant mode method the high-order transfer function of direct-drive wind turbine can be reduced to a second-order system. Thirdly, risk evaluation index of sub-synchronous and hyper-synchronous oscillation for direct drive wind turbine is proposed, which includes overshoot and adjusting-time to fully consider the initial amplitude caused by the disturbance and the attenuation speed of the oscillation after the disturbance. Finally, the feasibility of the proposed risk assessment method and the effectiveness of the evaluation index are verified through calculation example and simulation result.","PeriodicalId":231392,"journal":{"name":"2023 IEEE International Conference on Power Science and Technology (ICPST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129099596","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

Delayed Closing Suppression Strategy of the Transformer Inrush Current Based on the Offset Principle Between Remanence and Magnetic Bias 基于剩磁偏置原理的变压器涌流延时合闸抑制策略

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10165535

Lei Pan, Tiejun Ma, Tianwen Zheng, Zhen Xu, Shanghui Wang

{"title":"Delayed Closing Suppression Strategy of the Transformer Inrush Current Based on the Offset Principle Between Remanence and Magnetic Bias","authors":"Lei Pan, Tiejun Ma, Tianwen Zheng, Zhen Xu, Shanghui Wang","doi":"10.1109/ICPST56889.2023.10165535","DOIUrl":"https://doi.org/10.1109/ICPST56889.2023.10165535","url":null,"abstract":"Traditional inrush current suppression strategy delayed closing strategy, due to the measurement error of remanence will cause the problem of poor suppression effect. Therefore, this paper proposes a delayed closing strategy that does not require the measurement of remanence and is based on the offset principle between remanence and magnetic bias. Firstly, this paper analyzed the transient processes in the transformer core after the breaker has been closed. And studied the offset principle between remanence and magnetic bias. Secondly, the limitation of the traditional delayed closing strategy is analyzed. A delayed closing inrush current suppression strategy based on the offset principle between remanence and magnetic bias is proposed, and its closing steps are studied. Finally, taking the auxiliary transformer of a nuclear power plant as the prototype, a simulation platform is constructed to simulate, and the delayed closing inrush current suppression strategy based on the offset principle between remanence and magnetic bias is simulated and analyzed. The results show that, under ideal conditions, the proposed delayed closing strategy based on the offset principle between remanence and magnetic bias, the inrush current suppression effect reaches 85% and above, almost completely suppressing the excitation inrush current.","PeriodicalId":231392,"journal":{"name":"2023 IEEE International Conference on Power Science and Technology (ICPST)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117265064","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

Bi-level Programming of Siting and Sizing for Shared Electric Bike Based on Niche Particle Swarm Algorithm 基于小生境粒子群算法的共享电动车选址与尺寸双层规划

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10165593

Yuhan Yin, Fei Mei, Junzhe Huang, Zhiming Feng, Ze Ouyang, Yazhao Yin, Jianyong Zheng

引用次数: 0

Optimal Allocation Strategy of Frequency Modulation Power for Multiple Energy Storage Systems Considering Dual Constraints of Frequency Modulation Cost and Frequency Modulation Capability 考虑调频成本和调频能力双重约束的多储能系统调频功率优化分配策略

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10165072

Yongming Peng, Wenbo Si, Haiji Zhao, Changlin Lv, Chengzhe Liu, Fei Xu, Ling Hao, Junhui Li

{"title":"Optimal Allocation Strategy of Frequency Modulation Power for Multiple Energy Storage Systems Considering Dual Constraints of Frequency Modulation Cost and Frequency Modulation Capability","authors":"Yongming Peng, Wenbo Si, Haiji Zhao, Changlin Lv, Chengzhe Liu, Fei Xu, Ling Hao, Junhui Li","doi":"10.1109/ICPST56889.2023.10165072","DOIUrl":"https://doi.org/10.1109/ICPST56889.2023.10165072","url":null,"abstract":"Aiming at the power allocation problem of multiple energy storage power stations distributed at different locations in the regional power grid participating in frequency modulation services, a frequency modulation power optimization allocation strategy for multiple energy storage systems considering the dual constraints of frequency modulation cost and frequency modulation capability is proposed. Firstly, a multi-objective optimization allocation model for frequency modulation power is constructed with the minimum frequency modulation cost and minimum deviation of the state of charge (SOC) for energy storage power plants. Secondly, using Pareto based multi-objective genetic algorithm (MOGA) to solve the model, introduce adaptive weight coefficients and fuzzy membership functions for each objective function regarding the frequency regulation demand of the power grid and the deviation of the SOC of energy storage stations, construct a comprehensive satisfaction function to make decisions on the most advantageous points on the Pareto frontier, in order to obtain the optimal output of each energy storage station that can adapt to the frequency regulation requirements of the power grid. Finally, simulation analysis was conducted on the proposed strategy in this article, and the results showed that: The proposed strategy not only enhances the frequency regulation economy of the regional power grid, but also helps to restore the SOC of the energy storage power station.","PeriodicalId":231392,"journal":{"name":"2023 IEEE International Conference on Power Science and Technology (ICPST)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116978484","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

Small Signal Stability Analysis of MMC-HVDC Grid-connected System and Optimization Control of Zero-sequence Circulating Current Controller MMC-HVDC并网系统小信号稳定性分析及零序循环电流控制器的优化控制

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10164975

Yinmiao Luo, Jun Yao, Sen Huang, Kai Liu

{"title":"Small Signal Stability Analysis of MMC-HVDC Grid-connected System and Optimization Control of Zero-sequence Circulating Current Controller","authors":"Yinmiao Luo, Jun Yao, Sen Huang, Kai Liu","doi":"10.1109/ICPST56889.2023.10164975","DOIUrl":"https://doi.org/10.1109/ICPST56889.2023.10164975","url":null,"abstract":"The high voltage direct current (HVDC) transmission technology based on modular multilevel converter (MMC) is widely used in the offshore grid-connected wind power generation projects, and the small signal stability problems of the grid-connected system have been attracted great attention. This paper focused on the influence of the zero-sequence circulating current (ZSCC) controller on the stability of the offshore wind power generation MMC-HVDC grid-connected system. The closed-loop frequency domain model was derived by means of complex vectors and harmonic state space firstly. Then the paper developed the single-input-single-output (SISO) impedance model of MMC which considering the ZSCC controller. In addition, the impedance model of the offshore wind farm and the distribution network were established. Based on the impedance model, the influence law and mechanism of the ZSCC controller on the stability of the offshore wind power generation MMC-HVDC grid-connected system were explored. The analysis results show that when the output power of wind is too large, the system is prone to oscillation. The application of the ZSCC controller equivalently increases the bridge arm resistance and enhancing the system damping, which effectively suppressing the resonant peaks of MMC impedance in island control mode. Finally, from the point of view of enhancing the damping of the system, the parameter optimization scheme for ZSCC controller was designed, and the correctness of the theory and the feasibility of the scheme were verified by simulations.","PeriodicalId":231392,"journal":{"name":"2023 IEEE International Conference on Power Science and Technology (ICPST)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115135120","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

Suppression for Transient Voltage in Renewable Micro-grid by Power-Synchronous-Reactive-Compensation 电力同步无功补偿对可再生微电网暂态电压的抑制

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10165047

Chenyu Zhang, Yubo Yuan, Jianyu Yu

引用次数: 0

Lightning Discharge Test of 10kV Distribution Network Insulation Cross Arm and Comprehensive Evaluation of Lightning Protection Effect 10kV配电网绝缘横臂雷击放电试验及防雷效果综合评价

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10164847

Weixiang Huang, Xiuqing Lin, Shaonan Chen, Xiaofei Xia, Bo Feng, Qianyi Chen, Shan Li

{"title":"Lightning Discharge Test of 10kV Distribution Network Insulation Cross Arm and Comprehensive Evaluation of Lightning Protection Effect","authors":"Weixiang Huang, Xiuqing Lin, Shaonan Chen, Xiaofei Xia, Bo Feng, Qianyi Chen, Shan Li","doi":"10.1109/ICPST56889.2023.10164847","DOIUrl":"https://doi.org/10.1109/ICPST56889.2023.10164847","url":null,"abstract":"10kV distribution lines have low lightning withstand level and are easily affected by direct lightning or induced lightning, leading to insulator flashover or even tripping. In order to study the influence of insulated cross arm on the lightning withstand level of 10kV overhead distribution line combined with the actual situation, this paper first built a 10kV distribution line model, carried out lightning impact comparison test of insulated cross arm and iron cross arm, and obtained the lightning impact insulation strength of tower U50% under different cross arm types. Then, the numerical calculation method of lightning induced overvoltage of 10 kV overhead lines is proposed, and the self-defined lightning induced overvoltage calculation model is established by using MODELS language. Combined with the actual situation of 10kV power supply line of an oil transmission station in southern mountainous area, a co-simulation model of direct lightning strike and induced lightning overvoltage of 10kV distribution line was established by using ATP-EMTP, and the improvement effect of insulation cross arm on lightning resistance level was quantitatively analyzed. Finally, the effect of the device to improve the level of mine resistance is verified by the actual operation. The results show that replacing the iron cross arm of the cement tower with the composite insulating cross arm can significantly improve the lightning impulse insulation strength of the tower by U50%, which has the most significant effect on improving the lightning withstand level of the induced lightning of the line, followed by the lightning withstand level of the top of the lightning rod tower, and the lightning withstand level of the lightning stroke line has little improvement. The research results can provide reference for lightning protection design and transformation of distribution lines.","PeriodicalId":231392,"journal":{"name":"2023 IEEE International Conference on Power Science and Technology (ICPST)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125028836","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

Analysis of Leakage Current in SiC Power MOSFET Static Avalanche Breakdown based on Temperature-Dependent Simulation 基于温度相关仿真的SiC功率MOSFET静态雪崩击穿漏电流分析

2023 IEEE International Conference on Power Science and Technology (ICPST) Pub Date : 2023-05-05 DOI: 10.1109/ICPST56889.2023.10165470

Junhong Feng, Xinhong Cheng, Li Zheng, Yuehui Yu, Feiqing Huang, Wenyu Lu, Yuhua Quan, Xu Zhou

{"title":"Analysis of Leakage Current in SiC Power MOSFET Static Avalanche Breakdown based on Temperature-Dependent Simulation","authors":"Junhong Feng, Xinhong Cheng, Li Zheng, Yuehui Yu, Feiqing Huang, Wenyu Lu, Yuhua Quan, Xu Zhou","doi":"10.1109/ICPST56889.2023.10165470","DOIUrl":"https://doi.org/10.1109/ICPST56889.2023.10165470","url":null,"abstract":"The physical mechanism of the off-state avalanche breakdown process of SiC MOSFET which is composed of the active region and the termination region is analyzed by Sentaurus simulation and verified with TLP measurement data. At different stages of off-state, the current components of the active region and the termination region of SiC MOSFET are different, and a detailed explanation is given. The leakage current is generated by the presence of high impact ionization coefficients in the PN Junction of the transition region before the occurrence of the snapback. When the snapback occurs, electrons accumulate in the n-drift/n-substrate, while the previously generated large number of holes lowers the potential barrier of the n+-source/p-body to 0.13eV to form punch through current. The parasitic NPN bipolar transistor is not considered to be triggered for no continuous hole current injects into p-body. The termination region structure determined the avalanche breakdown voltage, and the active region decides the snapback current. TLP avalanche breakdown measurement indicates that the fabricated SiC MOSFETs with the same structure parameter as that utilized in the simulation shows the snapback phenomena, which verified the validity of the physical mechanism analysis of the off-state avalanche breakdown process.","PeriodicalId":231392,"journal":{"name":"2023 IEEE International Conference on Power Science and Technology (ICPST)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125233916","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