杨茂昌
（广东中质检测技术有限公司，广东 广州，510663）
摘要：配电变压器绕组材质存在以铝代铜的现象，给电力供配电系统带来安全隐患。针对传统的热电阻检测法存在耗时长、效率低；趋肤效应检测法需要较为严格的试验条件，变压器测试模型难以确定等问题，提出基于热电效应鉴别配电变压器绕组材质的方法。经实测，验证了此方法对额定容量为400 kVA以内的配电变压器的有效性。
关键词：热电效应；配电变压器；绕组材质；以铝代铜
中图分类号：TP271,TP277 文献标志码：A 文章编号：1674-2605(2023)04-0005-04
DOI：10.3969/j.issn.1674-2605.2023.04.005
A Method for Identifying Winding Materials of Distribution Transformers Based on Thermoelectric Effects
YANG Maochang
(Guangdong Zhongzhi Testing Technology Co., Ltd., Guangzhou 510663, China)
Abstract: The phenomenon of using aluminum instead of copper in the winding material of distribution transformers poses a safety hazard to the power supply and distribution system. The traditional thermal resistance detection method is time-consuming and inefficient; The skin effect detection method requires strict experimental conditions, and it is difficult to determine the transformer testing model. Therefore, a method based on thermoelectric effect is proposed to identify the winding material of distribution transformers. The effectiveness of this method for distribution transformers with a rated capacity of less than 400 kVA has been verified through actual measurement.
Keywords: thermoelectric effect; distribution transformer; winding material; using aluminum instead of copper
