Data-driven health monitoring and control of battery energy storage system in distribution networks
Li-Ion batteries (LIBs) have been widely utilized in electric vehicles and battery energy storage systems (BESS) for power grid applications. To avoid system failure through timely maintenance, it is of great importance to estimate the battery state of health (SOH). This thesis first develops data-d...
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| Format: | Thesis-Doctor of Philosophy |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/159830 |
| _version_ | 1826126500232953856 |
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| author | Liu, Wei |
| author2 | Xu Yan |
| author_facet | Xu Yan Liu, Wei |
| author_sort | Liu, Wei |
| collection | NTU |
| description | Li-Ion batteries (LIBs) have been widely utilized in electric vehicles and battery energy storage systems (BESS) for power grid applications. To avoid system failure through timely maintenance, it is of great importance to estimate the battery state of health (SOH). This thesis first develops data-driven methods for online SOH estimation of LIBs under different load profiles. Novel health indicators (HIs) that are extracted from various load profiles are proposed and advanced machine learning algorithms are developed to map the relationship between HIs and SOH. Then, this thesis identifies the coupling relationship between frequency regulation and voltage regulation in low-voltage distribution networks with relatively low x/r ratio. To this end, a fuzzy logic-based controller is proposed to provide coordinated frequency and voltage support via BESS. To mitigate battery health degradation, a battery lifetime model is built and used to design fuzzy rules of the controller. |
| first_indexed | 2024-10-01T06:53:20Z |
| format | Thesis-Doctor of Philosophy |
| id | ntu-10356/159830 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:53:20Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1598302023-07-05T05:56:25Z Data-driven health monitoring and control of battery energy storage system in distribution networks Liu, Wei Xu Yan School of Electrical and Electronic Engineering xuyan@ntu.edu.sg Engineering::Electrical and electronic engineering Li-Ion batteries (LIBs) have been widely utilized in electric vehicles and battery energy storage systems (BESS) for power grid applications. To avoid system failure through timely maintenance, it is of great importance to estimate the battery state of health (SOH). This thesis first develops data-driven methods for online SOH estimation of LIBs under different load profiles. Novel health indicators (HIs) that are extracted from various load profiles are proposed and advanced machine learning algorithms are developed to map the relationship between HIs and SOH. Then, this thesis identifies the coupling relationship between frequency regulation and voltage regulation in low-voltage distribution networks with relatively low x/r ratio. To this end, a fuzzy logic-based controller is proposed to provide coordinated frequency and voltage support via BESS. To mitigate battery health degradation, a battery lifetime model is built and used to design fuzzy rules of the controller. Doctor of Philosophy 2022-07-06T03:28:18Z 2022-07-06T03:28:18Z 2022 Thesis-Doctor of Philosophy Liu, W. (2022). Data-driven health monitoring and control of battery energy storage system in distribution networks. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/159830 https://hdl.handle.net/10356/159830 10.32657/10356/159830 en This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Electrical and electronic engineering Liu, Wei Data-driven health monitoring and control of battery energy storage system in distribution networks |
| title | Data-driven health monitoring and control of battery energy storage system in distribution networks |
| title_full | Data-driven health monitoring and control of battery energy storage system in distribution networks |
| title_fullStr | Data-driven health monitoring and control of battery energy storage system in distribution networks |
| title_full_unstemmed | Data-driven health monitoring and control of battery energy storage system in distribution networks |
| title_short | Data-driven health monitoring and control of battery energy storage system in distribution networks |
| title_sort | data driven health monitoring and control of battery energy storage system in distribution networks |
| topic | Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/159830 |
| work_keys_str_mv | AT liuwei datadrivenhealthmonitoringandcontrolofbatteryenergystoragesystemindistributionnetworks |