基于3D打印建模的变压器典型局部放电模型研究

Study on Typical Transformer Partial Discharge Models Based on 3D Printing&Modeling

局部放电是造成电力变压器绝缘劣化、沿面闪络或绝缘击穿的重要原因。为了对变压器内部局部放电类型进行模式识别,基于3D打印技术设计加工了4种典型变压器内部局部放电绝缘缺陷模型,并搭建局部放电模拟试验平台对各模型进行测量,通过对比分析各模型的n-q-φ谱图,总结出不同谱图的特点,对变压器的局部放电类型识别具有一定的指导意义。

Partial discharge is an important cause of the insulation deterioration,the surface flashover or the insulation breakdown of power transformers.In order to identify the type of internal partial discharges of transformers,four tjrpical internal partial discharge insulation defect models of transformers are designed and processed based on 3D printing technology and a test platform for the simulation of partial discharges is built and used to measure these models.By the comparison and analysis of n-q-φ spectral graphs of each model,characteristics of every spectral graph are summarized,providing guidance on the type identification of internal partial discharges of transformers.