电力电缆线路局放测试及定位操练模型的研制(2)

本文作为本刊同题论文系列的第二篇，主要针对在电缆接头上检测发生在电缆接头或发生在电缆本体上局放的局放测试技术，包括局放传感器类型选用，安装位置及安装形态，各种检测方法的灵敏度比较等，通过在电缆线路模型上所进行的模拟实验结果，促使测试人员较准确地理解和掌握有关电缆接头的局放测试原理和检测方法，为电缆线路现场局放实测打好基础。本论文的前一篇主要介绍电缆线路模型的构成和用途；本论文着重介绍在电缆接头上的各种局放测试方法和模拟实验结果；本论文的后续一篇将会着重介绍在电缆终端上的各种局放测试方法和模拟实验结果。

Development of Power Cable Circuit Model for Training of PD Measurement (2)

As the second paper in this serials, the focus is put on the PD measurement of Cable Joint including the kind of three joints in set with grounding wire and another kind of three joints in set with cross-bonding. Especially the choice of PD sensors, their installation and sensitivity comparison can be verified by several experiments on the cable circuit model with injecting simulated PD signal by PD signal generator. Based on the experiment results the PD sensing method, PD judgment, the propagation characteristics of PD traveling wave, and calibration method for cable joint can be easy to understand.