低压厂用变压器高压侧负序过流保护整定

华电技术 ›› 2016, Vol. 38 ›› Issue (7): 60-61.

低压厂用变压器高压侧负序过流保护整定

湖北华电襄阳发电有限公司，湖北襄阳〓441041

出版日期:2016-07-25 发布日期:2016-09-23

Study on high side negative sequence over current protection setting of low voltage station service transformer

Hubei Huadian Xiangyang Power Company Limited, Xiangyang 441041, China

Online:2016-07-25 Published:2016-09-23

摘要/Abstract

摘要：

摘要：分析了Dyn11联结组别的低压厂用变压器两侧电流的关系，通过计算低压母线不对称短路时高压侧负序电流的大小，按照保护灵敏度要求，确定负序过流保护的整定原则。最后，通过实际算例，指出了负序过流保护与下一级保护的配合关系。

关键词:

关键词：变压器, 负序过流保护, 整定

Abstract:

Abstract:The relationship of both side current of LV plant service transformer Dyn11 connection was analyzed. By calculating the asymmetric shortcircuit current of HV side, negative current protection adjustment principle was confirmed[1]. Finally, cooperative relationship of negative current protection and next stage protection was indicated.

Key words:

Keywords:transformer, negative current protection, adjusting

王旅. 低压厂用变压器高压侧负序过流保护整定[J]. 华电技术, 2016, 38(7): 60-61.

WANG Lü.

Study on high side negative sequence over current protection setting of low voltage station service transformer

[J]. Huadian Technology, 2016, 38(7): 60-61.