A high-frequency quasi-wideband antenna sensor for partial discharge detection
Partial discharge (PD) detection is significant for ensuring the reliability, safety, and longevity of electrical systems, offering the ability for proactive maintenance and minimizing the risk of catastrophic failures across diverse industrial applications. The radiofrequency (RF) detection method...
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| Format: | Thesis-Master by Coursework |
| Language: | English |
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Nanyang Technological University
2024
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| Online Access: | https://hdl.handle.net/10356/174010 |
| _version_ | 1826110719381209088 |
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| author | Lin, Minyi |
| author2 | Zheng Yuanjin |
| author_facet | Zheng Yuanjin Lin, Minyi |
| author_sort | Lin, Minyi |
| collection | NTU |
| description | Partial discharge (PD) detection is significant for ensuring the reliability, safety, and longevity of electrical systems, offering the ability for proactive maintenance and minimizing the risk of catastrophic failures across diverse industrial applications. The radiofrequency (RF) detection method is the most widely utilized approach, covering a spectrum from high-frequency to ultra-high frequency bands. RF detection’s key advantage lies in its immunity to electromagnetic interference (EMI). However, designing antennas for high frequencies presents a challenge, requiring a balance between achieving a wide-band frequency and maintaining a compact volume.
This thesis begins with an in-depth categorization of existing PD detection methods, presenting a comprehensive overview of design structures for high-frequency (HF), very high-frequency (VHF), and ultra-high-frequency (UHF) sensors. Subsequently, we introduce a novel quasi-wideband switch antenna sensor designed for operation in the high-frequency band. This sensor incorporates two coil ar- rays and four capacitors, controlled by a microcontroller chip. Various coil and capacitor combinations are selected to achieve distinct resonant frequency responses by programming the microcontroller using Arduino IDE. A total of 48 combinations contribute to forming a wide resonant frequency band.
Last but not least, the proposed sensor was tested using a vector network analyzer (VNA) in the 48 combinations of capacitors and coils affirming resonant frequency bands within 1-100MHz. Additionally, in an experiment compared with the High-Frequency Current Transformer (HFCT), our designed antenna sensor successfully detects PD signals in the high-frequency band around 25MHz, demonstrating a sensitivity nearly equivalent to that of HFCT. This proposed switch sensor offers several advantages, including 1) wide-band frequency detection, 2) compact size, and 3) relatively high sensitivity. |
| first_indexed | 2024-10-01T02:39:06Z |
| format | Thesis-Master by Coursework |
| id | ntu-10356/174010 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:39:06Z |
| publishDate | 2024 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1740102024-03-15T15:43:08Z A high-frequency quasi-wideband antenna sensor for partial discharge detection Lin, Minyi Zheng Yuanjin School of Electrical and Electronic Engineering YJZHENG@ntu.edu.sg Engineering Partial discharge detection Switch antenna sensor Quasi-wideband Online monitoring Partial discharge (PD) detection is significant for ensuring the reliability, safety, and longevity of electrical systems, offering the ability for proactive maintenance and minimizing the risk of catastrophic failures across diverse industrial applications. The radiofrequency (RF) detection method is the most widely utilized approach, covering a spectrum from high-frequency to ultra-high frequency bands. RF detection’s key advantage lies in its immunity to electromagnetic interference (EMI). However, designing antennas for high frequencies presents a challenge, requiring a balance between achieving a wide-band frequency and maintaining a compact volume. This thesis begins with an in-depth categorization of existing PD detection methods, presenting a comprehensive overview of design structures for high-frequency (HF), very high-frequency (VHF), and ultra-high-frequency (UHF) sensors. Subsequently, we introduce a novel quasi-wideband switch antenna sensor designed for operation in the high-frequency band. This sensor incorporates two coil ar- rays and four capacitors, controlled by a microcontroller chip. Various coil and capacitor combinations are selected to achieve distinct resonant frequency responses by programming the microcontroller using Arduino IDE. A total of 48 combinations contribute to forming a wide resonant frequency band. Last but not least, the proposed sensor was tested using a vector network analyzer (VNA) in the 48 combinations of capacitors and coils affirming resonant frequency bands within 1-100MHz. Additionally, in an experiment compared with the High-Frequency Current Transformer (HFCT), our designed antenna sensor successfully detects PD signals in the high-frequency band around 25MHz, demonstrating a sensitivity nearly equivalent to that of HFCT. This proposed switch sensor offers several advantages, including 1) wide-band frequency detection, 2) compact size, and 3) relatively high sensitivity. Master's degree 2024-03-12T02:02:02Z 2024-03-12T02:02:02Z 2024 Thesis-Master by Coursework Lin, M. (2024). A high-frequency quasi-wideband antenna sensor for partial discharge detection. Master's thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/174010 https://hdl.handle.net/10356/174010 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering Partial discharge detection Switch antenna sensor Quasi-wideband Online monitoring Lin, Minyi A high-frequency quasi-wideband antenna sensor for partial discharge detection |
| title | A high-frequency quasi-wideband antenna sensor for partial discharge detection |
| title_full | A high-frequency quasi-wideband antenna sensor for partial discharge detection |
| title_fullStr | A high-frequency quasi-wideband antenna sensor for partial discharge detection |
| title_full_unstemmed | A high-frequency quasi-wideband antenna sensor for partial discharge detection |
| title_short | A high-frequency quasi-wideband antenna sensor for partial discharge detection |
| title_sort | high frequency quasi wideband antenna sensor for partial discharge detection |
| topic | Engineering Partial discharge detection Switch antenna sensor Quasi-wideband Online monitoring |
| url | https://hdl.handle.net/10356/174010 |
| work_keys_str_mv | AT linminyi ahighfrequencyquasiwidebandantennasensorforpartialdischargedetection AT linminyi highfrequencyquasiwidebandantennasensorforpartialdischargedetection |