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发明公开
CN109031053A 用于变压器状态监测智能装置的局部放电告警方法及系统 无效 - 驳回

用于变压器状态监测智能装置的局部放电告警方法及系统
摘要：
本发明涉及一种用于变压器状态监测智能装置的局部放电告警方法及系统，属于变压器状态监测技术领域。本发明首先采集变压器油或油纸中溶解气体乙炔的含量和局部放电量；然后根据采集的乙炔气体含量和局部放电量分别计算乙炔气体含量和局部放电量的局部放电告警预期值；最后根据乙炔气体含量和局部放电量的局部放电告警预期值以及乙炔气体含量和局部放电量在局部放电告警评价中的权重确定综合局部放电评价结果，根据综合评价结果确定是否进行局部放电告警。本发明的告警方法融合了变压器油中溶解气体含量局部放电量，极大提高局部放电告警的准确性，有效降低现场误报率。
摘要（英）：

The invention relates to a partial discharge alarm method and a system for transformer state monitoring intelligent device, and belongs to the technical field of transformer state monitoring. The method comprises the following steps: firstly, collecting the content of dissolved gas acetylene in the transformer oil or oil paper and the partial discharge amount; then, respectively calculating partial discharge alarm expected values of the acetylene gas content and the partial discharge amount according to the collected acetylene gas content and the partial discharge amount; and finally, determining a comprehensive partial discharge evaluation result according to the partial discharge alarm expected values of the acetylene gas content and the partial discharge amount, the weight of the acetylene gas content and the partial discharge amount in the partial discharge alarm evaluation, and determining whether to carry out partial discharge alarm or not according to the comprehensive evaluation result. The alarm method of the invention is combined with the partial discharge amount of dissolved gas in the transformer oil , so that the accuracy of partial discharge alarm is greatly improved,and the field false alarm rate is effectively reduced.

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