110kV降压变压器常规保护

110kV降压变压器常规保护

文档编号:JD788 带设计图，文档字数:5892,页数:28

设计概况

这次设计主要进行了110kV降压变压器常规保护的配置及整定计算，其内容包括短路计算、保护装置的整定计算、二次接线原理图。变压器配置了瓦斯保护、纵差保护、相间后备保护、零序接地保护、过负荷保护。

关键词：继电保护变压器短路计算继电保护整定计算二次原理图

Design Overview

The design mainly does reasonable disposition of conventional protection and profiles of the present situation and the development of the protection ,which includes calculation of short circuit protection device setting, secondary wiring diagram and protection profiles. The transformer has gas protection, differential protection, zero-sequence grounding protection and overload protection.

Key Words : protective relaying , transformer , short-circuit calculation
protection profiles, short circuit, the second diagram

目录
1.引言........................................................1
1.1   继电保护简介.............................................1
1.2 继电保护的发展史状况........................................1
2.    短路电流计算..............................................3
2.1   参数计算.................................................3
2.2   f1点(高压侧）短路电流计算...................................4
2.3   f2点（中压侧）短路电流计算.................................10
2.4   f3点（低压侧）短路电流计算.................................12
2.5   短路电流计算表.............................................14
2.   变压器保护及整定............................................15
3.1   纵差动保护.................................................15
3.2   相间后备保护...............................................20
3.2.1 过电流保护................................................20
3.2.2 过负荷保护 ...............................................21
3.3   瓦斯保护...................................................21
3.4   零序电流保护...............................................22
参考文献...........................................................26
附录（变压器保护图纸）.............................................28

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