期刊论文

Research on noise reduction for 750 kV substation equipment and supporting insulator ancillary fittings

中文

武汉轻工大学学报

2095-7386

2015

3

64-70

10.3969/j.issn.2095-7386.2015.03.014

本校为第一机构

750 kV变电站多采用敞开式布置方案,其电晕噪声源较多,分析计算模型复杂,降噪优化设计的难度较大。研究对1 300 m高海拔区的某一敞开式750 kV变电站的导线和设备金具进行了现场电晕及噪声测量,确定电晕放电点及分析噪声频谱特性;给出修正后的高海拔设备和导体配套金具最大表面起晕场强控制值;根据设备的实际安装位置对相关设备进行了电场仿真建模计算;根据场强控制要求,针对仿真中的明显高电场点进行了相关结构的选择或优化设计,使优化后设备电场值基本都在控制值以下;对应用优化结构金具后的750 kV变电站进行现场电晕放电和可听噪声实测,对比降噪效果,经实践检测,采用优化结构金具的变电站的电...

750 kV substations have most adopted the open layout scheme .Its corona noise sources are more , analysis calculation model is more complex , and noise optimization design is more difficult .This paper firstly has the meas-urement on corona and noise of 750 kV substation conductors and equipment ancillary fittings with 1 300 m high al-titude to determine the corona discharge point and analyze the noise spectral characteristics .The maximum surface field strength control values of conductors and equipment ancillary fittings are given ,and simulation modeling to cal-culate the electric field is ...