采用中性点经电阻接地应注意的几个问题  

Notable Problems in resistance Grounding Using Neutral Point

作　　者：陈明良[1] 

机构地区：[1]宝钢集团一钢公司动力厂,上海200431

出　　处：《冶金动力》2005年第2期19-21,25,共4页Metallurgical Power

摘　　要：中压电网采用电阻接地后,零序电流保护的计算、继电器接入方式、电阻器选择均会面临如何规划和选择参数的问题。借鉴电力系统、宝钢以及一钢公司实际的做法,结合国内新规范的要求,提出了自己的认识和看法。After the medium-voltage electric network was ground using resistance. The problem of how to plan and select parameters would occur in calculation of zero sequence current protection, linking mode of relay and selection of resistor. Using the practice of BaoSteel Co. and No.1 Steel Co. for reference and according to the requirements of domestic new standards, some views are put forward.

关 键 词：零序电流 零流接取 电阻选配 保护计算 

分 类 号：TM727[电气工程—电力系统及自动化]