本文件推荐了使用交流电压和VHF/UHF电磁传感器测量局部放电的最佳实践，用于在额定电压高达800 kV的HVDC挤压电缆系统的工厂和预制接头的常规试验期间进行质量控制。本推荐规程针对局部放电的整个现象，而不仅仅是局部放电脉冲幅度，以评估测试对象（HVDC挤压电缆系统的工厂接头或预制接头）中是否存在临界局部放电。“临界局部放电”指被测物体绝缘内的放电，不包括交流电压试验期间可能出现的所有外部放电，e。 g、 与试验装置相关的高压电极、导电导线等产生的电晕放电。

This document recommends best practices for the measurement of partial discharges using AC voltages and VHF/UHF electromagnetic sensors for quality control during routine tests on factory and pre-moulded joints of HVDC extruded cable systems with rated voltage up to 800 kV. This recommended practice addresses the whole phenomenon of partial discharges, rather than solely on partial discharge pulse amplitude, in order to assess whether critical partial discharges are present in the tested object (either a factory joint or a pre-moulded joint of a HVDC extruded cable system). By "critical partial discharge" it is meant here a discharge within the insulation of the object under test, excluding all external discharges that can be present during the AC voltage test, e.g. corona discharges due to HV electrodes, conducting leads, etc. related to the test setup.