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提出了基于可闻声信号的配电变压器放电故障识别方法.首先,采用希尔伯特-黄变换(HHT)对放电声信号进行处理,提取频带能量作为特征量.然后,利用单分类方法支持向量数据描述(SVDD)对特征量进行识别.通过现场实测配电变压器本体声信号和实验室模拟配电变压器内部放电故障对该方法进行了验证,结果表明该方法能够较好地识别配电变压器内部放电故障.“,”The identification method of distribution transformer discharge fault is proposed based on audible sound signal.First of all,the Hilbert Huang transform (HHT) is used to process the acoustic signal and extract frequency band energy as the feature quantity.Then,the support vector data description (SVDD) of single classification method is taken to identify the feature quantity.The acoustic signal of the distribution transformer is measured;and an internal discharge fault simulation experiment of distribution transformer is made to verify the accuracy of proposed method.The analysis results show that the method identifies the internal discharge fault of distribution transformer effectively.