摘要
工程中部分忽视平衡绕组的做法给平衡绕组双卷变压器的安全运行带来了隐患。因此,在总结平衡绕组双卷变压器参数录入的基础上,分析平衡绕组对正序、零序回路的影响,研究了平衡绕组对变压器抗短路能力及继电保护的影响。修正并完善了与平衡绕组双卷变压器相关的继电保护整定计算原则,从继电保护角度保证了平衡绕组双卷变压器及电网的稳定运行。
The partial neglect of balancing winding brings hidden trouble to the safe operation of two-winding transformer with balancing winding in engineering. The impacts of balancing winding on the transformer ＇s anti-short-circuit ability and relay protection are studied,and based on the parameter input of two-winding transformer with balancing winding,the influences of balancing winding on positive-sequence and zerosequence circuits are analyzed. The setting calculation principles of relay protection associated with two-winding transformer with balancing winding are modified and improved,which guarantees the stable operation of two-winding transformer and power grid from the perspective of relay protection.
出处
《电力自动化设备》
EI
CSCD
北大核心
2017年第12期205-210,共6页
Electric Power Automation Equipment
关键词
双卷变压器
平衡绕组
回路分析
继电保护
整定计算
two-winding transformer
balancing winding
circuit analysis
relay protection
setting calculation
