声强法在变电站变压器声功率测试中的应用

Application of sound intensity method in sound power level measure of power transformer

变压器的声功率值是预测或评估变电站噪声影响的重要参数,方便、准确地测量其声功率值对变电站噪声影响评价具有重要意义。本文提出采用声强法测量变电站变压器的声功率值,测试结果证明,与传统的声压测试法和声功率测试法相比,该方法不易受周围环境的影响,能方便、准确地测量全户外式变电站变压器的声功率级。

The sound power level of power transformer is the main parameter for prediction or evaluation of noise influence of substation.Sound intensity method is superior to the traditional methods including sound pressure and sound power measurement methods.It is not easiily affected by sorrounding environment and can measure the sound power level of the transformer station outdoors conveniently and accurately.