海上升压站振动测试和分析  

Vibration Test and Analysis of Ocean Booster Stations

作　　者：朱瑞军 何先龙[2] 金波 王锋 戚建功 郑涛 ZHU Ruijun;HE Xianlong;JIN Bo;WANG Feng;QI Jiangong;ZHEN Tao(National Electric Investment Group,Jiangsu Offshore Wind Power Co.,Ltd.,Yincheng 224000,Jiangsu China;Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China;Zhejiang East China Engineering Safety Technology Co.,Ltd.,Hangzhou 310000,China)

机构地区：[1]国家电投集团江苏海上风力发电有限公司,江苏盐城224000 [2]中国地震局工程力学研究所地震工程与工程振动重点实验室,哈尔滨150080 [3]浙江华东工程安全技术有限公司,杭州310000

出　　处：《噪声与振动控制》2019年第3期230-234,共5页Noise and Vibration Control

基　　金：中国地震局工程力学研究所基本科研专项资助(2017B02);中国电建集团华东勘测设计研究院“海上风电安全监测技术研究与应用”科研专项资助(KY2017-02-78);国家电投江苏海上风电公司“海上风机基础及升压站在线监测系统与分析平台构建”科研专项资助(Dc170081Y)

摘　　要：近海风电场产生的电压需要经过海洋升压站升压后输送到陆地使用,振动检测和分析是海洋升压站的日常安全维护的重要手段,江苏某近海风电场升压站震感强烈,为了检测升压站的结构健康状况,测试此升压站的实际振动情况,组建振动检测系统,测试得到此升压站第1层和第4层2个水平向和垂直向振动加速度和振动速度的数据,并且对数据进行时程图和自功率谱的分析,发现此升压站高层振动强度大于底层振动强度,机电设备的振动对于升压站局部振动影响较大,严重时会影响正常生活和工作,振动1阶固有频率较低,结构振动能量主要集中在1阶固有频率处,但是第1层振动和第4层振动的主要频率在各个方向都有稍微的偏差,偏差不足1%。测试和分析结果表明,机电设备对于升压站局部振动影响明显,此升压站可能存在结构连接松动的情况,研究结果可以为海洋升压站的快速故障诊断提供一定的参考。The voltage generated by the offshore wind farms needs to be transported to inland after boosting by ocean booster stations.Vibration detection and analysis are the important means for the daily safety maintenance of the ocean booster stations.In Jiangsu province,an ocean booster station of the offshore wind farm had a strong sense of vibration.In order to test the structural health and the actual vibration situation of the booster station,a vibration detection system was set up.The data of horizontal and vertical vibration accelerations and vibration velocities of the first and fourth floors of the booster station was measured.Then,the time history diagram and the self-power spectrum of the data were analyzed.It was found that the vibration intensity of the booster station increases with the rise of the floor,the vibration of the mechanical and electrical equipment has a great influence on the local vibration of the booster station and sometime the influence can be very serious.The first order natural frequency of vibration is low,and the vibration energy of the structure is mainly concentrated at this frequency.The main vibration frequencies of the first floor and the fourth floor have slight deviations in all directions,but the deviations are all less than 1 %.The results of test and analysis show that the influence of the mechanical and electrical equipment on the local vibration of the booster station is obvious and there may exists loose structural connection in the booster station.This study may provide some reference for the rapid fault diagnosis of the ocean booster stations.

关 键 词：振动与波 海洋升压站 振动检测 故障诊断 频谱分析 

分 类 号：TU311.3[建筑科学—结构工程]