【摘要】 变压器是变电站中的主要噪声源,降低变压器产生的噪声是控制变电站噪声的治本措施。减小磁致伸缩、防止铁心机械振动产生的噪声、降低油箱磁屏蔽产生的噪声、降低机械构件振动产生的噪声是变压器降噪的有效措施。实践证明,220 k V油浸风冷式变压器采用这些措施后取得了良好的降噪效果,变压器(包括冷却设备)负载声功率级为90.31 d B(A)、负载声压级为62.90 d B(A),远低于国家标准限值。更多还原

【Abstract】 Transformer is the main noise source in substation,reduce the noise generated by the transformer substation is a fundamental measure to control noise. Reduce the magnetostriction,prevent the core mechanical vibration noise,lowering tank magnetic shielding noise,reduce the mechanical structure vibration noise of transformer noise are the effective measures. Practice has proved that,220 k V oil cooling transformer after adopting these measures,transformer( including cooling equipment) load of sound power level as 90. 31 d B( A),the load level as 62. 90 d B( A),far lower than the national standard limit.更多还原