2023 International Conference on Power Energy Systems and Applications (ICoPESA)最新文献_第3页

A Two-Stage Stochastic Unit Commitment Considering Shared Energy Storage and Renewable Energy Sources 考虑共享储能和可再生能源的两阶段随机单元承诺

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141248

Li Li, Qing-song Zhang, Xiaosheng Zhang, Ziyu Zhang, Miao Yang, B. Gao, Tao Ding

引用次数: 0

An Engineering Approach for Short-Circuit Current Calculation Considering WTG Integrated 考虑WTG集成的短路电流计算工程方法

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141043

Yiran Dong, Hengchu Shi, D. Kong, Hao You, Jing Chen, Shoudong Xu, Jinfu Chen

{"title":"An Engineering Approach for Short-Circuit Current Calculation Considering WTG Integrated","authors":"Yiran Dong, Hengchu Shi, D. Kong, Hao You, Jing Chen, Shoudong Xu, Jinfu Chen","doi":"10.1109/ICoPESA56898.2023.10141043","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141043","url":null,"abstract":"With the ever-increasing scale of wind power, the fault characteristics of power grids have changed dramatically, and the existing relay setting calculation approaches can no longer meet the requirements of modeling. The wind turbine generator (WTG) is usually treated as constant current source or set to zero to adapt to the traditional short-circuit current calculation software. This method does not consider the fault characteristics of the WTG, so the calculation accuracy is lower than that of iteration. However, the iterative algorithm also has problems, such as non-convergence or too many iterations leading to long computation time. Therefore, a calculation method of short-circuit current considering WTG integrated is proposed in this paper, which can solve the problem of iteration non-convergence while ensuring accuracy within the allowable range of engineering. Firstly, the WTG short-circuit current models considering converter control strategy and fault characteristics are established. Then, the branches with WTG are converted into \"constant potential source + equivalent impedance\" to facilitate WTG embedding in the relay protection setting calculation software and maintain consistency with the traditional synchronous generator equivalent mode. In addition, the calculation formula of equivalent impedance is deduced, and the modified voltage is also proposed to improve the accuracy. Finally, a simulation is performed in GIRGE B4-39 and part of actual power grids structures in a province to verify engineering practical value of the proposed method.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124844966","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 Sensor Fault Diagnosis Method for Rectifier Used in Traction Systems 牵引系统整流器传感器故障诊断方法

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141215

Yunjun Yu, Yunquan Song, Hongwei Tao

引用次数: 0

Research on Cooperative Fault Ride-through Strategy of Offshore Wind Power Grid-Connected System via VSC-HVDC System VSC-HVDC海上风电并网系统协同故障穿越策略研究

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141466

Dajiang Wang, Qiang Li

{"title":"Research on Cooperative Fault Ride-through Strategy of Offshore Wind Power Grid-Connected System via VSC-HVDC System","authors":"Dajiang Wang, Qiang Li","doi":"10.1109/ICoPESA56898.2023.10141466","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141466","url":null,"abstract":"Aiming at the problems of weak fault ride-through capacity of offshore wind power grid-connected system, heating of DC energy consuming devices and waste of electric energy, etc. In this paper, a cooperative fault ride-through strategy combining blade energy storage and DC energy dissipation device is proposed. On the basis of analyzing the overvoltage mechanism of DC side and the control principle of flexible converter station during fault, a fault ride-through method based on blade energy storage is proposed, which is simulated and verified on Matlab/Simulink simulation platform. According to the high-voltage and low-voltage fault ride-through standard of wind turbines in China, the expression of the reference value of active and reactive current of flexible converter station in fault ride-through period is determined. Combined with the fault degree and the margin limitation of energy storage by blade kinetic energy, the switching strategy of DC energy dissipation device is designed., and then the overall control strategy of wind farm blade energy storage and DC energy-consuming devices is put forward. Finally, the experimental tests are carried out on the hardware-in-the-loop simulation platform at the controller level. The simulation results under different working conditions show that the control method proposed in this paper can not only realize the fault ride-through of Offshore wind power grid-connected system through Voltage Source Converter-High Voltage Direct Current (VSC-HVDC), but also effectively solve the waste of electric energy and the heating problem of DC energy-consuming devices, and prolong its service life.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129724857","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

Harmonic Suppression of Open-Winding PMSM System with Common DC Bus Based on Improved PIR Control 基于改进PIR控制的开绕组直流母线永磁同步电机系统谐波抑制

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141410

Shirui Xie, Xinpeng Feng, Pingping Gu, Wei Zhang, Ziqi Lei, Chaohui Zhao

引用次数: 0

Bidirectional Coupling of Electromagnetic and Temperature Fields for Power Electronic Transformer 电力电子变压器电磁场与温度场的双向耦合

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141194

Shihu Zhang

{"title":"Bidirectional Coupling of Electromagnetic and Temperature Fields for Power Electronic Transformer","authors":"Shihu Zhang","doi":"10.1109/ICoPESA56898.2023.10141194","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141194","url":null,"abstract":"The working conditions of the power electronic transformer (PET) are different to the typical power transformers due to its high switching frequency, high voltage and high current. To understand the behavior of the PETs, a Multiphysics model, which enables a bidirectional coupling of electromagnetic and temperature fields, needs to be considered during the design and operation. In this paper, a simulation-based study of power electronic transformer is carried out, especially for a bidirectional coupling of electromagnetic field and temperature distribution. Firstly, a model of transformer magnetic loss is developed. Based on this, a finite element method (FEM) model is then developed with a detailed structure of a transformer iron core and windings. Considering the influence of temperature on the material properties of transformer, the bidirectional coupling between the electromagnetic field and temperature field is established, and the parameters of electromagnetic field and temperature field are determined. The results of electromagnetic field and temperature field in transformer are analyzed by means of electromagnetic- thermal coupling analysis. The simulation results indicated that there is a significant difference between the simulation results of the temperature distribution of the core with or without the bidirectional coupling. The temperature of the hot spot of the transformer is increased by 7 °C when considering the bidirectional coupling. The bidirectional coupling model can be adopted for the design and asset management of the PETs with more reliability, and the temperature dependency of the material properties should be included in modelling PETs.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131241979","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

Power Asymmetry Characteristic and Stability Analysis of Grid-Connected Inverter under Weak Grid Condition 弱电网条件下并网逆变器功率不对称特性及稳定性分析

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141292

Fang Liu, Gengtao Yuan, G. He, Dan Liu

引用次数: 0

Research on Optimization Design of Cable Joint for Improving Cable Reliability 提高电缆可靠性的电缆接头优化设计研究

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141404

Chenhui Li, Hao Qin, Jie Wang, Tuofu Zhu, Changhai Sun, Kai Shi

{"title":"Research on Optimization Design of Cable Joint for Improving Cable Reliability","authors":"Chenhui Li, Hao Qin, Jie Wang, Tuofu Zhu, Changhai Sun, Kai Shi","doi":"10.1109/ICoPESA56898.2023.10141404","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141404","url":null,"abstract":"With the development of new energy technology, the reliability of direct burial cable joints plays an important role in power quality. The traditional hexagonal surround pressure connection method is prone to faults. A study of the failure mechanism is made through the site investigation and COMSOL simulation, then a new type of cable joint connection is designed. Comparing the two connection methods, the hexagonal surround pressure connection method is electrically and mechanically connected only by crimp tubes. It is apt to heat deformation. Under the same current excitation, the new connection method reduces the maximum current density by 82.6%, the maximum temperature rise by 60.3%, and the maximum thermal deformation by 82.8%. The effect of the dimensions of the new connection on the electric field, temperature and deformation is quantitatively analyzed. The results show that the electric field distribution and the deformation variable distribution at the connection position are jointly determined by the contact and the connecting tube, whereas the electric field distribution is mainly determined by the contact.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126344532","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

Excitation Current on the Influence of Radial Electromagnetic Waves of Tangential Magnetizing Parallel Structure Hybrid Excitation Synchronous Motor 励磁电流对切向磁化并联结构混合励磁同步电动机径向电磁波的影响

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10140583

Wendong Zhang, Liang Pang, Huoda Hu, Qinhai Hong, Chaohui Zhao

{"title":"Excitation Current on the Influence of Radial Electromagnetic Waves of Tangential Magnetizing Parallel Structure Hybrid Excitation Synchronous Motor","authors":"Wendong Zhang, Liang Pang, Huoda Hu, Qinhai Hong, Chaohui Zhao","doi":"10.1109/ICoPESA56898.2023.10140583","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10140583","url":null,"abstract":"To study the effect of different excitation current on the radial electromagnetic wave of tangential magnetizing parallel structure hybrid excitation synchronous motor (TMPS-HESM) under no-load and the armature reaction conditions, this paper introduces the basic structure of the motor and the rotor magnetic circuit model by means of the finite element analysis method according to the principle of electrical machinery. The analytical model of the amplitude, frequency and order of the radial electromagnetic force wave of the motor is derived by using the Maxwell stress tensor method considering the change of the excitation current, and the force wave component which has great influence on the electromagnetic vibration of the motor is qualitatively selected as the focus of analysis. The variation rule of radial electromagnetic force wave under different excitation current and no-load is calculated. The radial electromagnetic force wave component which is greatly affected by the excitation current change is discussed and the reason is analyzed, which provides a theoretical basis for further suppressing the electromagnetic vibration of this kind of hybrid excitation motor.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122191683","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 Testing of Cavity Decay Spectroscopy Photodetector 空腔衰减光谱光电探测器的设计与测试

2023 International Conference on Power Energy Systems and Applications (ICoPESA) Pub Date : 2023-02-24 DOI: 10.1109/ICoPESA56898.2023.10141039

Yue Zhao, Feng Zhu, Xin-Ran Zhang, Shengkun Xie, C. Zhang

{"title":"Design and Testing of Cavity Decay Spectroscopy Photodetector","authors":"Yue Zhao, Feng Zhu, Xin-Ran Zhang, Shengkun Xie, C. Zhang","doi":"10.1109/ICoPESA56898.2023.10141039","DOIUrl":"https://doi.org/10.1109/ICoPESA56898.2023.10141039","url":null,"abstract":"CRDS is a spectroscopy method widely used for trace gas detection. It can be used to measure the trace component detection of insulation gas decomposition in power systems, providing a reliable guarantee for the safe operation of power systems. And the photodetector is a very critical part of the CRDS. For the requirements of low noise, high bandwidth and fast response of cavity decay spectra, an InGaAs photodiode and a low-noise operational amplifier were selected to design a photodetector with a response wavelength range of 800-1700 nm. The photodetector has an amplification of 10M, a response bandwidth of 1 MHz, a noise level of less than 0.1 mV, and a minimum detectable light intensity of 20 nW. The FFT analysis and sensitivity check of the output signal are performed through simulation, and the results show that the distortion rate can reach 0.0001. In the optical cavity decay signal detection platform, the signal collected by the photoelectric detector was processed to obtain the fitted curves of absorption spectral lines and decay time of the cavity, and the absorption peaks of the decay curve and fine sweep spectrogram were verified, and the detector can be used for gas concentration analysis of CRDS equipment.","PeriodicalId":127339,"journal":{"name":"2023 International Conference on Power Energy Systems and Applications (ICoPESA)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122549235","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