高压并联电抗器器身-油箱间振动控制与仿真分析

Vibration control and simulation analysis between reactor body and oil tank for high-voltage shunt reactor

高压并联电抗器运行时产生高水平振动与噪声,器身与油箱间的振动传递是导致噪声过高的原因之一。本文以氟橡胶和氢化丁腈橡胶为主要原料,设计了一种器身-油箱间三维隔振装置,振动试验台测试结果表明,其50~800 Hz隔振效率达到90%以上,经加速老化试验验证,可在电抗器油浸环境内服役13.6年。随后,针对某6.7 MV·A电抗器等效样机,建立了电磁、振动有限元模型,结合振动测试,分析了三维隔振装置的减振效果。安装三维隔振装置后,电抗器器身通过基础向油箱的振动传递得到有效控制,油箱表面振动加速度由0.572 m/s^(2)下降至0.491 m/s^(2),近场平均声压级由64.5 dB(A)下降至62.2 dB(A),减振降噪效果优良。

High-voltage shunt reactor will generate vibration and noise with high level at run time,and the vibration transmission between reactor body and oil tank is one cause of high noise.This article designs a 3-D vibration isolation device using fluorine rubber and hydrogenated nitrile rubber,and vibration tests show that its vibration isolation efficiency at 100-800Hz is more than 90%.Accelerated aging test results show that its service age in shunt reactor is about 13.6 years.Then electromagnetic and vibration simulation models of 6.7MVA shunt reactor are established to analyze the vibration isolation effect of the 3-D device,and are combined with experiment tests.After the installation of 3-D vibration isolation device,the vibration transmission from shunt reactor body to oil tank is controlled,the vibration level of oil tank decrease from 0.572m/s^(2)to 0.491 m/s^(2),and the sound level decrease from 64.8dB(A)to 62.2dB(A).The vibration isolation and noise control effects are perfect.