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To realize the development of fluorescent optical fiber partial discharge detection system, according to the light radiation characteristics of insulator creeping discharge, the key performance and matching efficiency of the fluorescence photoelectric measurement system were compared and analyzed. The main components, characteristic spectral lines, and spectral statistical changing with discharge intensity of the insulator creeping discharge spectrum were obtained through experiments. Combined with the emission spectrum of insulator creeping discharge, excitation spectrum of fluorescent fiber, and capture efficiency of the fiber, the fluorescence excitation efficiency of two fluorescent fibers for partial discharge was compared and analyzed, and the excitation intensity and excitation efficiency of two typical PS fluorescent fibers were obtained. The results show that the fiber with 299-477 nm of excitation spectrum is better than the fiber with 294-410 nm of excitation spectrum. The R3896 PMT and fluorescent fiber system has better matching efficiency, and the SNR of PMT reaches a peak value of 12.45 dB under the optimal driving bias. Under the optimal bias voltage, the self-temperature drift effect of natural cooling system is approximately 7%, and the cooling recovery time is approximately 40 min.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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