中文摘要：

针对电力变压器局部放电特高频检测的宽带和窄带检测方法，介绍了这2种检测方法的原理并在实验室中进行了对比试验，研究了其检测效果和抗干扰性能。试验结果表明宽带系统具有检测信息丰富的优点．但从抗干扰方面来讲，窄带系统更具有优势。现场检测时应在全面分析现场具体背景噪声的基础上，根据窄带检测技术和宽带检测技术的特点灵活选择最优的检测方法。

英文摘要：

The paper introduces the principle of the broadband and narrowband detection method of UHF detection methods for power transformer partial discharge, carries out laboratory comparison test, and studies its detection effect and anti-interference performance. The test results show that the broadband system has the advantage of detection information-rich and the narrow-band system has good anti-interference effect. Field detection should be available on the basis of comprehensive analysis of the site-specific background noise, and the optimal detection method is chosen according to the characteristics of the narrowband detection technology and broadband detection technology.