扩大内桥接线方式二次回路问题  

Discussion of secondary circuits for expanded inter-bridge connection mode

作　　者：赵东森 张斌 ZHAO Dongsen;ZHANG Bin(State Grid Ningxia Yinchuan Power Supply Company,Yinchuan Ningxia750001,China;Maintenance Company of State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan Ningxia 750011,China)

机构地区：[1]国网宁夏电力有限公司银川供电公司,宁夏银川750011 [2]国网宁夏电力有限公司检修公司,宁夏银川750011

出　　处：《宁夏电力》2018年第1期23-27,共5页Ningxia Electric Power

摘　　要：目前新建、扩建变电站中,扩大内桥接线方式广泛使用。通过对扩大内桥接线方式下2号主变压器电压切换回路进行分析,发现其回路存在造成电压并列的隐患,为消除隐患对回路进行改进。现场试验结果表明:改进后的主变压器电压切换回路成功杜绝了原有隐患,具有良好的工程实用价值。Expanded inter-bridge connection mode is widely used in the new and expanded substation at present.Through the analysis of No.2 main transformer voltage switch circuits,finds out the circuit has hidden trouble which can cause voltage paralleling.In order to eliminate the hidden trouble,the circuit was improved.The field experimental results show that:the modified main transformer voltage switch circuits succeed to eliminate the original hidden trouble,has better engineering practical value.

关 键 词：扩大内桥接线 电压回路 隐患 

分 类 号：TM645.21[电气工程—电力系统及自动化]