| Autor: |
LIN Yifu, YE Zhaoping, CHEN Xue, YE Chang, ZHENG Shusheng, ZENG Xingyi |
| Jazyk: |
čínština |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Zhejiang dianli, Vol 43, Iss 8, Pp 113-120 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1007-1881 |
| DOI: |
10.19585/j.zjdl.202408013 |
| Popis: |
To achieve high-sensitivity live detection for partial discharge （PD） pulses in high-voltage switch cabinets， a detection method based on a second-order circuit is proposed. Firstly， a pulse detection circuit that includes a charged display device and a detection impedance is constructed， and then the electrical parameters of the sensing and display units are measured and analyzed. Subsequently， a second-order circuit suitable for live detection is introduced， and the impact of second-order circuit， capacitance， and inductance parameters of the charged display device on safety， reliability and detection sensitivity is studied. Finally， a test is carried out on the proposed method using a 10 kV metal-clad switchgear and a charged display device. The results reveal that the detection impedance of the second-order circuit does not undermine the safe operation of the switchgear and the charged display device. Its detection sensitivity is 1.6 times that of the high-frequency current transformer mounted on the earth wire of the switchgear. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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