并联电抗器振动特性及声功率级计算  

Vibration Characteristics and Acoustic Power Level Calculation of Shunt Reactors

作　　者：周兵 王延召 胡静竹 倪园 万保权 刘震寰 ZHOU Bing;WANG Yanzhao;HU Jingzhu;NI Yuan;WANG Baoquan;LIU Zhenhuan(State Key Laboratory of Power Grid Environmental Protection,China Electric Power Research Institute,Wuhan 430074,China)

机构地区：[1]电网环境保护国家重点实验室(中国电力科学研究院有限公司)

出　　处：《高电压技术》2019年第11期3685-3692,共8页High Voltage Engineering

基　　金：国家电网公司科技项目(GYW17201700090);武汉市“黄鹤英才(科技)计划”科技创新人才项目(特高压并联电抗器隔声罩降噪性能优化设计及现场评估技术)~~

摘　　要：为掌握高压并联电抗器的振动特性及声功率级确定方法,在分析电抗器本体振动产生机理的基础上,分别采用声压、声强和振动法测量并讨论了电抗器的声功率级特性,明确了电抗器的振动频谱及分布规律,提出了电抗器噪声预测计算的声源参数。结果表明,电抗器本体振动以100 Hz基频为主,各面的振动分布差别较大,振动加速度与运行电压线性相关;声压法测量得到电抗器声功率级为96.4~101.2 dB,相比声强法大2~6 dB,可作为变电站噪声计算的声源参数。In order to grasp the vibration characteristics and the method of determining the sound power level of high-voltage shunt reactors,based on the analysis of the mechanism of reactor vibration,we measured and discussed the sound power level characteristics of the reactor by using sound pressure,sound intensity,and vibration methods.Moreover,we determined the vibration spectrum and distribution of the reactor,and proposed the sound source parameters of the reactor noise prediction calculation.The results show that the vibration of the reactor is dominated by the fundamental frequency of 100 Hz,and the distribution of vibration on each side is quite different.In addition,the vibration acceleration of the reactor is linearly related to the operating voltage.The sound power level of the reactor is measured to be 96.4 to 101.2 dB.Compared with the sound intensity method,it is 2~6 dB larger,which can be used as sound source parameters for substation noise calculation.

关 键 词：并联电抗器 振动 频率 声功率级 UHV 噪声 

分 类 号：TM472[电气工程—电器]