电网技术Issue(6)：1526-1530,5.
特高压直流长、短输电线路可听噪声的转换关系研究
Study on Audible Noise Transformation Relation Between Long and Short UHVDC Transmission Lines
摘要
Abstract
Audible noise (AN) of transmission lines is one of the key technical problems to be solved for the development of UHVDC power transmission. The UHVDC test line and corona cage are important experimental facilities for the research on AN of actual transmission lines. It is crucial to research the AN transformation relation between long and short UHVDC transmission lines for predicting the AN level of actual UHV transmission line by experimental results of test line constructed in UHVDC test base. The calculation formula for AN level at different positions beneath transmission line with arbitrary length, which is expressed by the acoustic power of the corona sources, is derived and it follows that the incidence relation between AN level of long UHVDC transmission line and that of short transmission line is attained. Under the measurement conditions that the length of single-circuit UHVDC test line is larger than 10 times of the distance from the measuring point to positive polar conductor and the offset of measuring point in longitudinal direction of transmission line is not larger than 20% of total length of the test line, the measured AN level beneath the test line can be approximately regarded as the AN level at the same position of actual infinite long lines.关键词
可听噪声/声压/特高压直流试验线段/特高压直流输电线路Key words
audible noise/sound pressure/UHVDC test line/UHVDC transmission line分类
信息技术与安全科学引用本文复制引用
谢莉,陆家榆,赵录兴,张文亮..特高压直流长、短输电线路可听噪声的转换关系研究[J].电网技术,2013,(6):1526-1530,5.基金项目
国家重点基础研究发展计划项目(973计划)(2011CB209400)。The National Basic Research Program of China (973 Program)(2011CB209400) （973计划）
