With the increasing proportion of new energy in power systems, issues regarding system voltage, inertia, and primary frequency regulation have become increasingly severe. In response to control and grid safety issues, a high proportion of new energy power system frequency and voltage support and regulation technology based on a doubly fed induction generator (DFIG) is proposed. The voltage-magnetic link equation of DFIG is theoretically derived, and the control principles of active and reactive power of DFIG are proposed. The support and regulation characteristics of improving the voltage of new energy substations are studied. Verification is conducted through large-scale grid simulation and on-site measurements.
{"title":"High proportion of new energy power system frequency and voltage support and regulation technology based on doubly fed induction generator","authors":"Jian Zhang, Wenfeng Li, Zhichen Geng, Changhao Guo","doi":"10.1088/1742-6596/2838/1/012033","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012033","url":null,"abstract":"With the increasing proportion of new energy in power systems, issues regarding system voltage, inertia, and primary frequency regulation have become increasingly severe. In response to control and grid safety issues, a high proportion of new energy power system frequency and voltage support and regulation technology based on a doubly fed induction generator (DFIG) is proposed. The voltage-magnetic link equation of DFIG is theoretically derived, and the control principles of active and reactive power of DFIG are proposed. The support and regulation characteristics of improving the voltage of new energy substations are studied. Verification is conducted through large-scale grid simulation and on-site measurements.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199527","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}
Pub Date : 2024-09-01DOI: 10.1088/1742-6596/2838/1/012026
Bin Qi, Zhiyuan Li, Lei Song, Guanwen Wang, Tong Wei
The thickness of the electrode significantly impacts battery performance. Increasing electrode thickness contributes to higher energy density, but it also leads to a decline in rate capability and stability. Therefore, a balance must be struck when determining electrode thickness. In this context, we compare experimental results with numerical simulations to reveal the primary reasons behind the drastic reduction in battery capacity and rate performance due to excessively thick electrodes. At the same time, there is minimal difference between experimental and simulated results at lower electrode thicknesses and smaller currents. As the electrode thickness and current increase, experimental performance deteriorates more rapidly, which arises from the uneven distribution of various components within the cathode during the drying process. In addition, we also simulated the capacity of the crack-free electrode and the depth of discharge at various locations within it, thus determining the main factors of its capacity decline.
{"title":"Analysis of the limitation factors of thick cathodes based on experimental and P2D model simulations","authors":"Bin Qi, Zhiyuan Li, Lei Song, Guanwen Wang, Tong Wei","doi":"10.1088/1742-6596/2838/1/012026","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012026","url":null,"abstract":"The thickness of the electrode significantly impacts battery performance. Increasing electrode thickness contributes to higher energy density, but it also leads to a decline in rate capability and stability. Therefore, a balance must be struck when determining electrode thickness. In this context, we compare experimental results with numerical simulations to reveal the primary reasons behind the drastic reduction in battery capacity and rate performance due to excessively thick electrodes. At the same time, there is minimal difference between experimental and simulated results at lower electrode thicknesses and smaller currents. As the electrode thickness and current increase, experimental performance deteriorates more rapidly, which arises from the uneven distribution of various components within the cathode during the drying process. In addition, we also simulated the capacity of the crack-free electrode and the depth of discharge at various locations within it, thus determining the main factors of its capacity decline.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"90 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199532","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}
Pub Date : 2024-09-01DOI: 10.1088/1742-6596/2838/1/012030
Yanyan Ma, Jianhua Yan
Li-S batteries are recognized as a promising secondary battery system because of their high energy density, low cost, and environmental friendliness. However, the development of Li-S batteries is mainly limited by issues such as electrode volume expansion, lithium polysulfide (LiPSs) shuttle, and slow redox reaction kinetics of sulfur. Here, a kind of solid-state Li-S battery with in situ solidified solid-state electrolytes (SSEs) is reported, which dramatically reduces the electrode/electrolyte interfacial impedance. In addition, electrospinning is used to fabricate a macroporous carbon nanofibers film (MP-CNFs) loaded with dispersed Co-ZrO2 nanodot electrocatalyst as the cathode host. The in-situ gel electrolyte can be easily infiltrated into the porous carbon nanofibers and contact the Co-ZrO2 catalyst, thus fully exerting its catalytic and conversion effects on LiPSs. The results indicate that solid-state Li-S batteries exhibit a high initial capacity of 795.5 mA h·g−1 and a capacity retention rate of ∼100% after 200 cycles at 1 C.
锂-硫电池因其能量密度高、成本低和环境友好而被认为是一种前景广阔的二次电池系统。然而，锂-S 电池的发展主要受限于电极体积膨胀、多硫化锂（LiPSs）穿梭、硫的氧化还原反应动力学缓慢等问题。本文报告了一种采用原位固化固态电解质（SSEs）的固态锂-S 电池，它能显著降低电极/电解质界面阻抗。此外，还利用电纺丝技术制备了负载分散 Co-ZrO2 纳米点电催化剂的大孔碳纳米纤维薄膜（MP-CNFs），作为阴极宿主。原位凝胶电解质很容易渗入多孔碳纳米纤维并与 Co-ZrO2 催化剂接触，从而充分发挥其对锂离子电池的催化和转化作用。结果表明，固态锂离子电池的初始容量高达 795.5 mA h-g-1，在 1 C 下循环 200 次后，容量保持率可达 100%。
{"title":"Efficient Co-ZrO2 electrocatalyst achieves high-performance solid-state lithium-sulfur batteries","authors":"Yanyan Ma, Jianhua Yan","doi":"10.1088/1742-6596/2838/1/012030","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012030","url":null,"abstract":"Li-S batteries are recognized as a promising secondary battery system because of their high energy density, low cost, and environmental friendliness. However, the development of Li-S batteries is mainly limited by issues such as electrode volume expansion, lithium polysulfide (LiPSs) shuttle, and slow redox reaction kinetics of sulfur. Here, a kind of solid-state Li-S battery with in situ solidified solid-state electrolytes (SSEs) is reported, which dramatically reduces the electrode/electrolyte interfacial impedance. In addition, electrospinning is used to fabricate a macroporous carbon nanofibers film (MP-CNFs) loaded with dispersed Co-ZrO<sub>2</sub> nanodot electrocatalyst as the cathode host. The in-situ gel electrolyte can be easily infiltrated into the porous carbon nanofibers and contact the Co-ZrO<sub>2</sub> catalyst, thus fully exerting its catalytic and conversion effects on LiPSs. The results indicate that solid-state Li-S batteries exhibit a high initial capacity of 795.5 mA h·g<sup>−1</sup> and a capacity retention rate of ∼100% after 200 cycles at 1 C.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"58 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199530","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}
With the complexity and diversification of the integrated energy system, accurate optimization of resource allocation and scheduling has become the focus of research. This paper studies the energy flow tracking technology of the heat-electric integrated energy system with an electric thermal storage boiler. The modeling of the electric thermal storage boiler and the application of the energy flow tracking technology not only improves the flexibility and stability of the system but also realizes the comprehensive monitoring and analysis of the electric energy and heat energy flow in the system. Finally, the energy flow tracking technology is used to reveal the flow path and distribution of energy in the system through the example of the integrated energy system. It also shows the flexible energy and space-time transfer characteristics of the electric thermal storage boiler in the electrothermal integrated energy system.
{"title":"Energy flow tracking of integrated energy system with electric thermal storage boiler","authors":"Guangzhe Liang, Xiaoming Zhang, Chonglei Ding, Jiaoyang Feng","doi":"10.1088/1742-6596/2838/1/012029","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012029","url":null,"abstract":"With the complexity and diversification of the integrated energy system, accurate optimization of resource allocation and scheduling has become the focus of research. This paper studies the energy flow tracking technology of the heat-electric integrated energy system with an electric thermal storage boiler. The modeling of the electric thermal storage boiler and the application of the energy flow tracking technology not only improves the flexibility and stability of the system but also realizes the comprehensive monitoring and analysis of the electric energy and heat energy flow in the system. Finally, the energy flow tracking technology is used to reveal the flow path and distribution of energy in the system through the example of the integrated energy system. It also shows the flexible energy and space-time transfer characteristics of the electric thermal storage boiler in the electrothermal integrated energy system.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199531","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}
Pub Date : 2024-09-01DOI: 10.1088/1742-6596/2838/1/012010
Xiaozhen Lei, Bin Zheng
The service performance of NBR seals under 70 MPa high-pressure hydrogen was investigated, and the effects of vulcanization additives, fillers, and crude systems on their sealing performance were investigated. The sealing performance was characterized by the changes in volume and hardness before and after the service of the seals.
{"title":"Service performance of nitrile rubber sealing ring under 70 MPa high-pressure hydrogen","authors":"Xiaozhen Lei, Bin Zheng","doi":"10.1088/1742-6596/2838/1/012010","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012010","url":null,"abstract":"The service performance of NBR seals under 70 MPa high-pressure hydrogen was investigated, and the effects of vulcanization additives, fillers, and crude systems on their sealing performance were investigated. The sealing performance was characterized by the changes in volume and hardness before and after the service of the seals.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199332","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}
Pub Date : 2024-09-01DOI: 10.1088/1742-6596/2838/1/012016
Bin Liu, Tiantian Huang
CO2 geological storage is one of the important means to mitigate the greenhouse effect. The safe underground storage of CO2 largely depends on the mechanical integrity of the caprock. This paper establishes a fluid-solid coupling model for CO2 geological storage to study the changes in pore pressure, vertical displacement, and effective stress in the caprock during the CO2 injection process. Combined with the Mohr-Coulomb criterion, the study determines whether mechanical failure occurs in the caprock. The results indicate that, at the beginning of CO2 injection, significant changes occur in the pore pressure, vertical displacement, and effective stress at the bottom of the caprock near the injection well, which then tend to stabilize; the maximum pore pressure at the bottom of the caprock reaches 36.08 MPa; the caprock near the injection well is considered the most critical area, where the risk of mechanical failure is highest; at the end of CO2 injection, the stress state does not reach the limit, and the caprock remains stable.
{"title":"Mechanical integrity analysis of caprock during the CO2 injection phase","authors":"Bin Liu, Tiantian Huang","doi":"10.1088/1742-6596/2838/1/012016","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012016","url":null,"abstract":"CO<sub>2</sub> geological storage is one of the important means to mitigate the greenhouse effect. The safe underground storage of CO<sub>2</sub> largely depends on the mechanical integrity of the caprock. This paper establishes a fluid-solid coupling model for CO<sub>2</sub> geological storage to study the changes in pore pressure, vertical displacement, and effective stress in the caprock during the CO<sub>2</sub> injection process. Combined with the Mohr-Coulomb criterion, the study determines whether mechanical failure occurs in the caprock. The results indicate that, at the beginning of CO<sub>2</sub> injection, significant changes occur in the pore pressure, vertical displacement, and effective stress at the bottom of the caprock near the injection well, which then tend to stabilize; the maximum pore pressure at the bottom of the caprock reaches 36.08 MPa; the caprock near the injection well is considered the most critical area, where the risk of mechanical failure is highest; at the end of CO<sub>2</sub> injection, the stress state does not reach the limit, and the caprock remains stable.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199325","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}
Pub Date : 2024-09-01DOI: 10.1088/1742-6596/2838/1/012011
Hechen Liu, Hong Yu, Mingjia Zhang, Peng Wu
Resistance to hygrothermal aging is the key to the popularization and application of basalt fiber composites in the field of electrical equipment, so it is crucial to develop fiber surface-modified coatings suitable for basalt fibers with excellent hygrothermal resistance. In this study, the performance changes of basalt fiber composite samples treated with four types of surface coatings under artificially accelerated hygrothermal aging test were comparatively analyzed, and the mechanism of different components in the surface coatings was further analyzed. The results showed that the use of epoxy resin emulsion co-mingled with acrylic emulsion as the film-forming agent could significantly improve the mechanical properties of the samples. The use of epoxy resin emulsion co-blended with polyurethane emulsion as the film-forming agent improved the insulating properties and moisture and heat resistance of the samples. Further, the use of 5:1:1 epoxy emulsion, acrylic emulsion, and polyurethane emulsion co-blended as the film-forming agent component can ensure the insulation and hygrothermal resistance of the samples while taking into account the mechanical properties. After 120 hours of wet-heat aging, the breakdown field strength was increased by 22%, leakage current and dielectric loss angle was increased by 10%, and the mechanical properties were also significantly improved compared with the sample with epoxy emulsion as the main film-forming agent. In summary, through the compounding of the film-forming agent emulsion components, the optimization of the moisture and heat resistance of basalt fiber composites can be achieved, and the use of the mass percentage of 5:1:1 for the three types of emulsions blended to prepare the fiber surface coatings is more suitable for the treatment of basalt fibers to prepare the electrician’s equipment.
{"title":"Study on the effect of film-forming agent composition on moisture and heat resistance of basalt fiber composites","authors":"Hechen Liu, Hong Yu, Mingjia Zhang, Peng Wu","doi":"10.1088/1742-6596/2838/1/012011","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012011","url":null,"abstract":"Resistance to hygrothermal aging is the key to the popularization and application of basalt fiber composites in the field of electrical equipment, so it is crucial to develop fiber surface-modified coatings suitable for basalt fibers with excellent hygrothermal resistance. In this study, the performance changes of basalt fiber composite samples treated with four types of surface coatings under artificially accelerated hygrothermal aging test were comparatively analyzed, and the mechanism of different components in the surface coatings was further analyzed. The results showed that the use of epoxy resin emulsion co-mingled with acrylic emulsion as the film-forming agent could significantly improve the mechanical properties of the samples. The use of epoxy resin emulsion co-blended with polyurethane emulsion as the film-forming agent improved the insulating properties and moisture and heat resistance of the samples. Further, the use of 5:1:1 epoxy emulsion, acrylic emulsion, and polyurethane emulsion co-blended as the film-forming agent component can ensure the insulation and hygrothermal resistance of the samples while taking into account the mechanical properties. After 120 hours of wet-heat aging, the breakdown field strength was increased by 22%, leakage current and dielectric loss angle was increased by 10%, and the mechanical properties were also significantly improved compared with the sample with epoxy emulsion as the main film-forming agent. In summary, through the compounding of the film-forming agent emulsion components, the optimization of the moisture and heat resistance of basalt fiber composites can be achieved, and the use of the mass percentage of 5:1:1 for the three types of emulsions blended to prepare the fiber surface coatings is more suitable for the treatment of basalt fibers to prepare the electrician’s equipment.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199451","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}
Pub Date : 2024-09-01DOI: 10.1088/1742-6596/2838/1/012032
Renping Zhang, Zuxiang Zhou
Heat pipe coupled Latent Heat Thermal Energy Storage (LHTES) is a commonly used technique for improving heat storage, due to its advantages such as heat conduction, isothermal, and uniform temperature. Adding fins to the heat pipe can enhance energy storage efficiency and system performance. Although previous research has looked into how heat pipe layouts affect LHTES, there is still a dearth of research on fin geometry optimization for boosted heat transfer. In this work, we used ANSYS Fluent to simulate the consequence of fin placement upon the heating capacity of a Phase Change Material (PCM) based LHTES system. Through an in-depth analysis of the heat transfer mechanisms, in an effort to quicken the PCM’s solidification process, we adjusted the fins’ length and spacing. The LHTES system’s overall solidification time was greatly shortened by the optimized model, going from 18800 seconds to 8500 seconds, achieving a 54.79% enhancement in thermal transfer efficiency.
{"title":"Research and optimization of heat transfer characteristics of heat pipe-coupled phase change energy storage system","authors":"Renping Zhang, Zuxiang Zhou","doi":"10.1088/1742-6596/2838/1/012032","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012032","url":null,"abstract":"Heat pipe coupled Latent Heat Thermal Energy Storage (LHTES) is a commonly used technique for improving heat storage, due to its advantages such as heat conduction, isothermal, and uniform temperature. Adding fins to the heat pipe can enhance energy storage efficiency and system performance. Although previous research has looked into how heat pipe layouts affect LHTES, there is still a dearth of research on fin geometry optimization for boosted heat transfer. In this work, we used ANSYS Fluent to simulate the consequence of fin placement upon the heating capacity of a Phase Change Material (PCM) based LHTES system. Through an in-depth analysis of the heat transfer mechanisms, in an effort to quicken the PCM’s solidification process, we adjusted the fins’ length and spacing. The LHTES system’s overall solidification time was greatly shortened by the optimized model, going from 18800 seconds to 8500 seconds, achieving a 54.79% enhancement in thermal transfer efficiency.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199525","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}
Pub Date : 2024-09-01DOI: 10.1088/1742-6596/2838/1/012018
Zhaohui Gu, Hui Wang
This article examines the impact of the EMA-GMA combination on the mechanical characteristics, fluidity, and glass transition temperature of PMMA/ASA alloy and uses scanning electron microscopy to characterize the modified PMMA/ASA alloy. The findings indicate that the addition of 5% EMA-GMA to PMMA/ASA significantly enhances its fracture resistance without compromising its stiffness. When the additional amount of EMA-GMA exceeds 10%, the mechanical properties and fluidity of the alloy begin to decline significantly. EMA-GMA within 15% can promote PMMA/ASA compatibility.
{"title":"Performance and mechanism analysis of EMA-GMA modified PMMA/ASA alloy","authors":"Zhaohui Gu, Hui Wang","doi":"10.1088/1742-6596/2838/1/012018","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012018","url":null,"abstract":"This article examines the impact of the EMA-GMA combination on the mechanical characteristics, fluidity, and glass transition temperature of PMMA/ASA alloy and uses scanning electron microscopy to characterize the modified PMMA/ASA alloy. The findings indicate that the addition of 5% EMA-GMA to PMMA/ASA significantly enhances its fracture resistance without compromising its stiffness. When the additional amount of EMA-GMA exceeds 10%, the mechanical properties and fluidity of the alloy begin to decline significantly. EMA-GMA within 15% can promote PMMA/ASA compatibility.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199336","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}
A high voltage shunt capacitor bank is very important for the normal operation of the power system, especially for the UHVDC transmission in long distance large capacity transmission, and power system networking has an important role. Therefore, its performance response under earthquakes is one of the key concerns. Through the fine finite element simulation modeling of the actual capacitor, the sine beat wave, and the actual earthquake input, the dynamic characteristics and the response index under the earthquake are studied. The results show that the stiffness in the x direction of the capacitor assembly is greater than that in the y direction. The weak position of the model is the root and top of the end insulator and the middle insulator. Under the action of different working conditions, such as X - and Y-El Centro waves, the maximum stress response of the root of the end insulator of the capacitor device is 4.98 MPa, and the safety factor is 3.51, which meets the requirement greater than 1.67.
高压并联电容器组对电力系统的正常运行非常重要，尤其是对特高压直流输电中的长距离大容量输电以及电力系统联网具有重要作用。因此，其在地震下的性能响应是人们关注的重点之一。通过对实际电容器、正弦拍波和实际地震输入的精细有限元仿真建模，研究了地震下的动态特性和响应指标。结果表明，电容器组件 x 方向的刚度大于 y 方向的刚度。模型的薄弱位置是端部绝缘子和中间绝缘子的根部和顶部。在 X 波和 Y 中心波等不同工况作用下，电容器装置端部绝缘子根部的最大应力响应为 4.98 兆帕，安全系数为 3.51，满足大于 1.67 的要求。
{"title":"Analysis of seismic damage mechanism of capacitor","authors":"Qingyun Min, Zhihu Hong, Dexu Zou, Fangrong Zhou, Longchang Zhu, Weiju Dai, Jingyi Yan, Haoruo Sun, Qiang Xie","doi":"10.1088/1742-6596/2838/1/012037","DOIUrl":"https://doi.org/10.1088/1742-6596/2838/1/012037","url":null,"abstract":"A high voltage shunt capacitor bank is very important for the normal operation of the power system, especially for the UHVDC transmission in long distance large capacity transmission, and power system networking has an important role. Therefore, its performance response under earthquakes is one of the key concerns. Through the fine finite element simulation modeling of the actual capacitor, the sine beat wave, and the actual earthquake input, the dynamic characteristics and the response index under the earthquake are studied. The results show that the stiffness in the x direction of the capacitor assembly is greater than that in the y direction. The weak position of the model is the root and top of the end insulator and the middle insulator. Under the action of different working conditions, such as X - and Y-El Centro waves, the maximum stress response of the root of the end insulator of the capacitor device is 4.98 MPa, and the safety factor is 3.51, which meets the requirement greater than 1.67.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"144 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142199524","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}
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