摘要
对Y/ >/ △接线的新型平衡变压器的接线方式和工作原理进行了分析 ,根据电磁耦合关系和戴维南定理推导出了简单实用的等值电路。随后利用电路理论对这种变压器的各种相间短路故障进行了分析 ,得到了各种故障情况下变压器高低压侧各相电流间的关系。此外 ,还提出了这种平衡变压器的纵差动保护的计算方法和接线方案 ,并利用上述短路计算所得结果验证了这种接线方案的正确性 。
The connection mode and operating principle of a new type balanced transformer are analyzed,the simple and practical equivalent circuit is deducted according to the electromagnetic relation and Thevenin's theorem.The relations between the currents of all phases and at both sides are drawn out by applying circuit theories and analyzing different inter phase short circuit faults of this kind transformer.The calculation methods and connection schemes of its differential protection are presented.The correctness of the connection schemes is verified with short circuit calculation.All these contribute to the future application of this kind of transformer.
出处
《电力自动化设备》
EI
CSCD
2000年第5期34-37,共4页
Electric Power Automation Equipment
关键词
平衡变压器
Y/〉/Δ接线
短路计算
差动保护
equivalent circuit
short circuit calculation
differential protection
balanced transformer
