- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | HU Guangcai, LI Xiaonan, YIN Haojie, GAO Bo, YANG Yan, LIU Yanqin, LIU Kai, WU Guangning. Influence of Hydrostatic Pressure on Discharge of Insulated Oil-Paper Surface under Column Plate Electrode[J]. Journal of Southwest Jiaotong University, 2022, 57(4): 737-744. doi: 10.3969/j.issn.0258-2724.20200680
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Figuring out the operation discharge characteristics of oil-paper insulation under different hydrostatic pressures can improve the operation and maintenance strategy of oil-paper insulation equipment, and can also provide a reference for the miniaturization and weight reduction of oil-paper insulation equipment. For this reason, surface discharge tests of oil-paper insulation were carried out on the column plate model under hydrostatic pressures ranging between 0.01 and 0.60 MPa in a self-designed hermetic oil tank without local discharge. The characteristic discharge parameters were measured in the development processes of discharge over the surface of the insulated oil-paper under different hydrostatic pressures. Several partial discharge parameters from initial discharge to breakdown, white spot and bubble were recorded. According to the previous results, together with the law of gas gas dissolution and compression under different hydrostatic pressures, it is inferred that the hydrostatic pressure increase has a inhibitory effect on gas defects in oil-paper insulation. The white spot and bubble during discharge under different hydrostatic pressures verify the inferred results. Both the test results and inferred results show that the initial discharge voltage and breakdown voltage increase as the hydrostatic pressure. Under the same voltage level, the peak discharge capacity, average discharge capacity, discharge repetition rate, and discharge power decrease as the hydrostatic pressure rises.
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