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Fog chamber is an indispensable part of artificial simulation for insulator pollution test. In this paper, the influence of pollution degree and humidity on the discharge characteristics of porcelain insulator in fog chamber environment was studied in combination with simulation and test. At first, the electric field distribution of clean and dirty insulators in 110 kV transmission line with and without fog chamber was simulated by the software Comsol Multiphysics. And then a scheme to make the electric field near the high voltage end of insulator with and without fog chamber approximate by reducing the test voltage with fog chamber was proposed. At last, tests were carried out with the voltage obtained by simulation. The results show that compared with the condition without fog chamber, the electric field around the clean insulator is larger at the high voltage end and smaller at the low voltage end under the condition with a fog chamber. Moreover, the electric field around the insulator in the fog chamber increases with the increase of pollution degree. The simulation results are verified by the test results, with the increase of the insulator pollution degree and the humidity, the number of discharge photons increases. This paper proposes a scheme to re-duce the test voltage in the artificial fog chamber to optimize the insulator pollution discharge test, and the test effect is more consistent with the actual field application status.
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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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