To satisfy an annual rate load growth of approximately 10% per year, Korea Electric Power Corporation (KEPCO) has been studying the use of double circuit 765-kV transmission lines. Since this would be the first application in the world for such lines, a 765-kV test line was built near the Yellow Sea to gain experience with this higher voltage. A primary corona phenomena that is important for conductor selection is audible noise (AN) due to corona. This paper presents the results of long-term measurements of AN from the 765-kV double circuit test line using a bundle of 6-483.8 mm/sup 2/ conductors at Korea Electric Power Research Institute's (KEPRI) 765-kV test station. The analysis of the data shows that the 6-rail conductor bundle satisfies the AN criterion of 50 dB(A) under rainy weather conditions.
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机译:为了满足每年约10%的年费率增长,韩国电力公司(KEPCO)一直在研究765-kV双回路输电线路的使用。由于这将是世界上此类电线的第一个应用,因此在黄海附近建造了一条765 kV的测试线,以获取使用更高电压的经验。对于电导体选择而言重要的主要电晕现象是电晕引起的可听噪声(AN)。本文介绍了在韩国电力科学研究院(KEPRI)765-kV测试站中使用6-483.8 mm / sup 2 /导线束从765-kV双回路测试线对AN进行长期测量的结果。数据分析表明,在雨天条件下,六轨导体束满足50 dB(A)的AN标准。
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