摘要
分析了几种常用的不同接法变压器二次侧发生不对称短路时,流过一次侧各相电流的大小和方向,以便确定装在变压器一次侧的电流互感器和继电器的接线方式,确保过流或电流速断保护的灵敏度满足要求。
Generally,in power transformer system there are three kinds of connection mode such as Y/Y-12, Δ/Y-11 and Y/Δ-11.This paper analyzes the size and direction of current in primary side of transformer system asymmetric shortcircuit happened at secondary side of the transformer so as to decide the connection mode of CTs and relays at primary side of the transformer and ensure that sensitivity of overcurrent relay and current fastbreak protection can meet requirement.
出处
《继电器》
CSCD
北大核心
2003年第9期84-85,87,共3页
Relay
