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

机译:500 kV DC PPLP绝缘充油电缆和附件的长期可靠性测试

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This paper describes the results of a long-term reliability testnof a newly developed 500 kV DC oil-filled cable and accessories thatntransmit up to 2800 MW. This is the largest capacity ever used fornsubmarine cables. The test line was 500 m and consist of submarinencables, land cables and several kinds of accessories. An optical fibernsensor was first installed in the oil duct of the cable to measure thenconductor temperature directly under application of DC voltage. Fromn1994 to 1996, the authors carried out an accelerated electrical andnthermal aging test equivalent to 40 years, a load cycle test, a polaritynreversal test and a transient overloading current test. Satisfactorynbreakdown strength was confirmed in the residual test which followed thenlong-term test. These results have been instrumental to the decision tonconstruct 500 kV DC commercial submarine cable lines
机译:本文描述了新开发的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。首先在电缆的油管中安装一个光纤传感器,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。在随后的长期测试之后的残留测试中确认了令人满意的分解强度。这些结果有助于决定构造500 kV直流商用海底电缆线

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