隔离开关控制回路(讲课版)

,隔离开关回路及五防装置,电网运行培训部,一,二,三,内容概述,隔离开关控制回路,隔离开关电机回路,防误闭锁装置,了解隔离开关,隔离开关用途,隔离电压，保证检修工作的平安;,配合断路器，在电路中进行倒闸操作;,用来切合小电流电路。,断路器端子箱,线路端子箱,QS,机构箱,QE,机构箱,一,二,三,内容概述,隔离开关控制回路,隔离开关电机回路,防误闭锁装置,防止误分、误合开关,防止带负荷拉、合刀闸,或手车触头,防止带电挂接地线,(,合接地刀闸,),防止带地线接地闸刀合闸送电,防止误入带电设备间隔,五 防,防误闭锁应满足五防功能,防误闭锁逻辑实现方式,机械闭锁,电气闭锁,电磁防误闭锁,机械防误闭锁是利用电气设备的机械联动部件对相应电气设备操作构成的闭锁,电气防误闭锁是将断路器、隔离开关、接地刀闸等设备的辅助接点接入电气操作电源回路构成的闭锁,电磁防误闭锁是将断路器、隔离开关、接地刀闸、隔离网门等设备的辅助接点接入电磁闭锁电源回路构成的闭锁,微机防误闭锁,微机防误闭锁是指通过计算机软件实现锁具之间的闭锁逻辑关系，从而达到电气设备防误闭锁的目的。,计算机监控系统防误闭锁,计算机监控防误闭锁是指利用变电所计算机监控系统采集设备状态，设置闭锁逻辑，输出闭锁接点串接在电气设备控制回路中实现闭锁。,在挂接地线合接地刀时，应保证接地点的任何方向都有断开的隔离刀闸。,规那么2,规那么3,规那么1,合刀闸或开关时应保证所有与刀闸或开关两侧相连的地线和接地刀闸都断开,与该刀闸直接相连的开关在断开位置,合负荷侧刀闸时，应确认电源侧的刀闸已经合好，拉电源侧刀时，应确认负荷侧的刀闸已经断开,等电位允许操作刀闸。,隔离开关防误根本原那么,1QS,1QF,2QS,3QS,1QE,3QE,QF,1QS,2QS,1QE,2QE,1QS,2QF,3QS,3QE,线路间隔母线侧隔离开关,逻辑,1,逻辑,2,VD1,2QE,1QE,2QS,2QS,为例,VD1,2QE,1QS,1QF,2QS,3QS,2QE,31QE,32QE,QF,1QS,2QS,1QE,2QE,1QS,2QF,3QS,32QE,线路间隔线路侧隔离开关,VD1,31QE,2QE,2QS,VD1,3QS,1QS,1QF,2QS,3QS,1QE,2QE,3QE,QF,1QS,2QS,1QE,2QE,1QS,2QF,3QS,3QE,线路间隔接地开关,VD1,2QE,1QE,2QS,VD1,1QE,2QE,3QE,保护柜示意图,9,10,9,10,9,10,VD1,VD1,课堂练习,380V,DLa,DLb,GBM,母联开关辅助接点,母联正,/,付母闸刀辅助接点,1G,DL,付母线,正母线,2G,DLc,1G,2G,380V,DLa,DLb,GBM,DLc,1G,2G,母联开关辅助接点,母联正,/,付母闸刀辅助接点,正确回路,请找出以下图错误,1G,2G,1GD,3G,2GD,DL,付母线,正母线,380V,DLa,DLb,DLc,GBM,1GD,2G,2G,1G,1G,3GD,1G,2G,3G,请找出以下图错误,3GD,KC1,KC2,KC3,1G,2G,1GD,3G,2GD,DL,付母线,正母线,GBM,1GD,2G,2G,1G,1G,3GD,1G,2G,3G,380V,DLa,DLb,DLc,正确回路,3GD,KC1,KC2,KC3,2GD,一,二,三,内容概述,隔离开关控制回路,隔离开关电机回路,防误闭锁装置,1,2,3,4,5,6,M,KM1,A,1,1,2,1,2,B,2,3,4,3,4,C,3,5,6,5,6,GDH,过载,/,缺相保护,合闸主回路,分闸主回路,QF1,电动机操作电源空开,合闸接触器,KM2,分闸接触器,电机保护,电动机,1,2,3,4,5,6,M,KM1,A,1,1,2,1,2,B,2,3,4,3,4,C,3,5,6,5,6,GDH,过载,/,缺相保护,合闸主回路,分闸主回路,QF1,KM2,合闸,1,2,3,4,5,6,M,KM1,C,1,1,2,1,2,B,2,3,4,3,4,A,3,5,6,5,6,GDH,过载,/,缺相保护,合闸主回路,分闸主回路,分闸,QF1,KM2,QF1,为什么改变电源相序就能改变电动机正反转？,思考题,一,三,二,讲课目录,隔离开关电机回路,隔离开关控制回路,防误闭锁装置,近控合闸回路,3,4,3,4,KM2,SB3,14,13,KM1,SB1,4,L,N,5,1,2,3,4,QF2,KM2,KM1,KM1,KM2,合闸,线圈,近控合闸按钮,刀闸操作电源,合闸位置限位开关,SL1,SL1,SL2,近控合闸,合闸保持,近控分闸,分闸保持,分闸位置限位开关,近控分闸回路,3,4,3,4,KM2,SB3,14,13,KM1,SB1,4,L,N,5,1,2,3,4,QF2,KM2,KM1,KM1,KM2,SL2,分闸,线圈,近控分闸按钮,刀闸操作电源,分闸位置限位开关,SL1,SL2,近控合闸,合闸保持,近控分闸,分闸保持,远控合闸回路,3,4,3,4,KM2,SB3,HJ,14,TJ,13,SB1,4,L,N,5,1,2,3,4,QF2,QC,9,10,KM2,KM1,SL1,KM1,KM2,SL2,2,1,远控合闸,近控合闸,合闸保持,远控分闸,近控分闸,分闸保持,转换开关,KM1,合闸信号,分闸信号,远控分闸回路,3,4,3,4,KM2,SB3,HJ,14,TJ,13,SB1,4,L,N,5,1,2,3,4,QF2,QC,9,10,KM2,KM1,SL1,KM1,KM2,SL2,2,1,远控合闸,近控合闸,合闸保持,远控分闸,近控分闸,分闸保持,转换开关,KM1,合闸信号,分闸信号,近控接点,远控接点,手动操作回路,3,4,3,4,SB3,HJ,14,TJ,13,SB1,4,L,N,5,1,2,3,4,QF2,QC,9,10,KM2,KM1,SL1,KM1,KM2,SL2,2,1,远控合闸,近控合闸,合闸保持,远控分闸,近控分闸,分闸保持,手动摇把操作电磁锁,手动信号,近控信号,远控信号,KM1,KM2,QC,9,10,2,1,转换开关,12,11,16,15,14,13,发手动操作信号,发近控操作信号,发远控操作信号,14,13,6,5,3,4,4K,A1,A2,4K,31,32,手动摇把操作电磁阀,手动接点,近控接点,远控接点,紧急停止回路,3,4,3,4,SB3,HJ,14,TJ,13,SB1,4,L,N,5,1,2,3,4,QF2,QC,9,10,KM2,KM1,SL1,KM1,KM2,SL2,2,1,远控合闸,近控合闸,合闸保持,远控分闸,近控分闸,分闸保持,手动摇把操作电磁锁,电气五防闭锁,手动信号,近控信号,远控信号,停止回路,KM1,KM2,QC,9,10,2,1,转换开关,12,11,16,15,14,13,发手动操作信号,发近控操作信号,发远控操作信号,14,13,6,5,3,4,4K,A1,A2,4K,31,32,手动接点,近控接点,远控接点,GDH,SB5,紧急停止按钮,电机保护,课堂练习,隔离开关控制回路小结,(1),隔离开关控制回路必须受相应断路器和接地刀闸的闭锁。,(2),操作脉冲应是短时的，完成操作后，应能自动解除。,(3),隔离开关应有所处状态的位置信号。,谢谢大家！,