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提要本文分析了小电流接地系统,发生单相接地故障时,传统的选线和定位方法的缺点和适用范围的局限性。并介绍了在兖矿集团变电所种使用较多地TY-2型小电流接地系统单相接地选线与定位装置的工作原理、主要技术参数、技术特点,以及在兖矿的使用情况。
Abstract This paper analyzes the shortcomings and limitations of the traditional method of line selection and location when a single-phase ground fault occurs in a small current grounding system. And introduces the working principle, main technical parameters, technical characteristics and usage of Yankuang single phase grounding line selection and positioning device for the TY-2 small current grounding system used in Yankuang substation.