Dynamic Response and Fatigue Analysis of a New Marine Gravitational Energy Storage System Under Wave Loads
Given the unstable input of electricity generated by offshore renewable energy in connection to the power grid at present, one solution is energy storage technology. In recent years, the new marine gravitational energy storage technology has received wide attention in China and worldwide. To apply t...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/12/12/2196 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850050829777633280 |
|---|---|
| author | Ziheng Wang Dazhi Huang Hongkun He Feifei Yang Wenhao Li Yi Chen |
| author_facet | Ziheng Wang Dazhi Huang Hongkun He Feifei Yang Wenhao Li Yi Chen |
| author_sort | Ziheng Wang |
| collection | DOAJ |
| description | Given the unstable input of electricity generated by offshore renewable energy in connection to the power grid at present, one solution is energy storage technology. In recent years, the new marine gravitational energy storage technology has received wide attention in China and worldwide. To apply this new energy storage technology for use in the ocean, in view of the structural characteristics of the new offshore gravitational energy storage system, a support structure based on the foundation of a wind-powered pipe frame is proposed. In order to verify the feasibility of the support structure, a finite element model is established using SACS to analyze whether it meets the requirements. The construction of this structure in a specific sea is simulated through finite element simulation. Then, in accordance with the hydrogeological conditions of the sea area, the wind turbine data, and the dimensional parameters of the energy storage system’s structure, a finite element model is established with SACS for static analysis, modal analysis, random wave response analysis, and wave spectrum fatigue analysis, thereby determining whether the structure meets the requirements for strength, deformation, and fatigue. The research results show that the UC value of the static strength of the support structure of the new offshore gravitational energy storage system is less than 1. In the modal analysis, the natural frequencies of the first- and second-order modes are not within the danger range. In the corresponding random wave analysis, it is found that the natural frequencies of the first four orders are the greatest contributors to the dynamic response during the normal operation of the turbine. In fatigue analysis, it is concluded that the structure meets all the requirements of DNV specifications. The research results provide a reference for the engineering application of the support structure of the new gravitational energy storage system in the ocean. |
| format | Article |
| id | doaj-art-a98d57e09c5a4cac972e13b3f294522b |
| institution | DOAJ |
| issn | 2077-1312 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-a98d57e09c5a4cac972e13b3f294522b2025-08-20T02:53:19ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-12-011212219610.3390/jmse12122196Dynamic Response and Fatigue Analysis of a New Marine Gravitational Energy Storage System Under Wave LoadsZiheng Wang0Dazhi Huang1Hongkun He2Feifei Yang3Wenhao Li4Yi Chen5Makarov College of Marine Engineering, Jiangsu Ocean University, Lianyungang 222005, ChinaCollege of Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, ChinaCollege of Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, ChinaCollege of Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, ChinaLianyungang Port Group Co., Ltd., Lianyungang 222005, ChinaCollege of Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, ChinaGiven the unstable input of electricity generated by offshore renewable energy in connection to the power grid at present, one solution is energy storage technology. In recent years, the new marine gravitational energy storage technology has received wide attention in China and worldwide. To apply this new energy storage technology for use in the ocean, in view of the structural characteristics of the new offshore gravitational energy storage system, a support structure based on the foundation of a wind-powered pipe frame is proposed. In order to verify the feasibility of the support structure, a finite element model is established using SACS to analyze whether it meets the requirements. The construction of this structure in a specific sea is simulated through finite element simulation. Then, in accordance with the hydrogeological conditions of the sea area, the wind turbine data, and the dimensional parameters of the energy storage system’s structure, a finite element model is established with SACS for static analysis, modal analysis, random wave response analysis, and wave spectrum fatigue analysis, thereby determining whether the structure meets the requirements for strength, deformation, and fatigue. The research results show that the UC value of the static strength of the support structure of the new offshore gravitational energy storage system is less than 1. In the modal analysis, the natural frequencies of the first- and second-order modes are not within the danger range. In the corresponding random wave analysis, it is found that the natural frequencies of the first four orders are the greatest contributors to the dynamic response during the normal operation of the turbine. In fatigue analysis, it is concluded that the structure meets all the requirements of DNV specifications. The research results provide a reference for the engineering application of the support structure of the new gravitational energy storage system in the ocean.https://www.mdpi.com/2077-1312/12/12/2196marine new gravitational energy storageSACSsupport structuredynamic response analysisfatigue analysis |
| spellingShingle | Ziheng Wang Dazhi Huang Hongkun He Feifei Yang Wenhao Li Yi Chen Dynamic Response and Fatigue Analysis of a New Marine Gravitational Energy Storage System Under Wave Loads Journal of Marine Science and Engineering marine new gravitational energy storage SACS support structure dynamic response analysis fatigue analysis |
| title | Dynamic Response and Fatigue Analysis of a New Marine Gravitational Energy Storage System Under Wave Loads |
| title_full | Dynamic Response and Fatigue Analysis of a New Marine Gravitational Energy Storage System Under Wave Loads |
| title_fullStr | Dynamic Response and Fatigue Analysis of a New Marine Gravitational Energy Storage System Under Wave Loads |
| title_full_unstemmed | Dynamic Response and Fatigue Analysis of a New Marine Gravitational Energy Storage System Under Wave Loads |
| title_short | Dynamic Response and Fatigue Analysis of a New Marine Gravitational Energy Storage System Under Wave Loads |
| title_sort | dynamic response and fatigue analysis of a new marine gravitational energy storage system under wave loads |
| topic | marine new gravitational energy storage SACS support structure dynamic response analysis fatigue analysis |
| url | https://www.mdpi.com/2077-1312/12/12/2196 |
| work_keys_str_mv | AT zihengwang dynamicresponseandfatigueanalysisofanewmarinegravitationalenergystoragesystemunderwaveloads AT dazhihuang dynamicresponseandfatigueanalysisofanewmarinegravitationalenergystoragesystemunderwaveloads AT hongkunhe dynamicresponseandfatigueanalysisofanewmarinegravitationalenergystoragesystemunderwaveloads AT feifeiyang dynamicresponseandfatigueanalysisofanewmarinegravitationalenergystoragesystemunderwaveloads AT wenhaoli dynamicresponseandfatigueanalysisofanewmarinegravitationalenergystoragesystemunderwaveloads AT yichen dynamicresponseandfatigueanalysisofanewmarinegravitationalenergystoragesystemunderwaveloads |