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首页> 外文期刊>IEEE Transactions on Power Delivery >Long-term reliability testing of 500 kV DC PPLP-insulated oil-filled cable and accessories
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Long-term reliability testing of 500 kV DC PPLP-insulated oil-filled cable and accessories

机译：500 kV DC PPLP绝缘充油电缆及其附件的长期可靠性测试

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This paper describes the results of a long-term reliability test of a newly developed 500 kV DC oil-filled cable and accessories that transmit up to 2800 MW. This is the largest capacity ever used for submarine cables. The test line was 500 m and consist of submarine cables, land cables and several kinds of accessories. An optical fiber sensor was first installed in the oil duct of the cable to measure the conductor temperature directly under application of DC voltage. From 1994 to 1996, the authors carried out an accelerated electrical and thermal aging test equivalent to 40 years, a load cycle test, a polarity reversal test and a transient overloading current test. Satisfactory breakdown strength was confirmed in the residual test which followed the long-term test. These results have been instrumental to the decision to construct 500 kV DC commercial submarine cable lines.
机译：本文介绍了新开发的500 kV DC充油电缆和传输2800 MW附件的长期可靠性测试的结果。这是海底电缆曾经使用的最大容量。测试线为500 m，包括海底电缆，陆上电缆和多种附件。首先将光纤传感器安装在电缆的油管中，以直接在施加直流电压的情况下测量导体温度。从1994年到1996年，作者进行了相当于40年的加速电气和热老化测试，负载循环测试，极性反转测试和瞬态过载电流测试。在长期测试之后的残留测试中确认了令人满意的击穿强度。这些结果有助于构建500 kV DC商业海底电缆线路的决定。

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