特高压试验示范工程输电线路无线电干扰长期测试数据的统计分析

发布时间：2018-09-12 16:39

【摘要】：为获取运行中的特高压交流输电线路无线电干扰水平及其特性,在特高压交流试验示范工程沿线的湖北枣阳建立了一处电磁环境长期观测站,对历时1 a得到的14.4万组有效数据进行了统计分析,获取了我国特高压交流输电线路无线电干扰的主要特性。研究表明:1 000 kV特高压交流输电线路无线电干扰好天气和雨天的长期测试数据基本符合正态分布,频谱特性和横向分布规律与CISPR研究结果基本一致,得到了无线电干扰不同天气条件下的统计值和累积概率曲线。0.5 MHz无线电干扰全天候80%、95%值分别为55.06、65.37 d B,好天气平均值为48.22 d B。采用CISPR激发函数法计算我国特高压交流单回路无线电干扰时,大雨到好天气下平均值的差值可取中值20.5 d B。
[Abstract]:In order to obtain the radio interference level and its characteristics of UHV AC transmission line in operation, a long-term observation station of electromagnetic environment was established in Zaoyang, Hubei Province, along the UHV AC test demonstration project. A statistical analysis of 144000 sets of effective data over one year has been carried out, and the main characteristics of radio interference of UHV AC transmission lines in China have been obtained. The results show that the long term test data of radio interference for 1 000 kV UHV AC transmission lines in good weather and rainy days basically accord with normal distribution, and the spectrum characteristics and transverse distribution are basically consistent with the results of CISPR. The statistical value and cumulative probability curve of radio interference under different weather conditions. 0.5 MHz radio interference all weather 80% is 55.06 ~ 65.37 dB, and the average value of good weather is 48.22 dB. When the CISPR excitation function method is used to calculate the UHV AC single loop radio interference in China, the median value of the difference between heavy rain and good weather is 20. 5 dB.
【作者单位】：中国电力科学研究院电网环境保护湖北省重点实验室;
【基金】：国家重点基础研究发展计划(973计划)(2011CB209402-3) 国家电网公司科技项目(SGTGYJSFW(2012)381)~~
【分类号】：TM75

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