● 三次谐波注意事项：............................................................................................49
C 五次谐波制动：....................................................................................................49
● 五次谐波注意事项：............................................................................................50
6.3.6 TA断线闭锁试验...............................................................................................50
A “变压器比率差动投入” 置1。.........................................................................50
B “TA断线闭锁比率差动”置2。...........................................................................50
C “TA断线闭锁比率差动”置0。...........................................................................50
●注意事项..................................................................................................................50
6.3.7 变压器零序差动保护试验...................................................................................51
● 定值整定注意事项：............................................................................................51
● 投运时注意事项：................................................................................................51
● 序比率差动特性校验............................................................................................51
● 方法一：同比率差动............................................................................................52
● 方法二：更简单的检验方法................................................................................52
● 注意事项：............................................................................................................53
● TA断线闭锁试验..................................................................................................53
6.4 变压器保护后备保护校验.........................................................................................53
6.4.1复合电压闭锁方向过流保护..............................................................................53
● 定值整定................................................................................................................53
6.4.2复合电压闭锁方向过流保护校验......................................................................56
● 注意事项................................................................................................................57
● 复合电压闭锁........................................................................................................57
1 负序相电压定值校验：..........................................................................................57
2 相间低电压定值校验：..........................................................................................58
3本侧过流受其他侧复合电压闭锁：.......................................................................59
4 相电流过流保护......................................................................................................59
5 方向性测试：..........................................................................................................59
6.4.3 零序过流保护校验.............................................................................................60
1 零序方向元件动作特性..........................................................................................60
2 零序过流I段和II段所采用的零序电流：............................................................60
3 零序电压闭锁元件：..............................................................................................60
●注意事项1：...........................................................................................................61
●注意事项2：...........................................................................................................61
●注意事项3：...........................................................................................................61
●注意事项4...............................................................................................................61
●注意事项5：...........................................................................................................61
4试验如下：...............................................................................................................61
A 接地零序过流：（投入接地零序压板）............................................................61
B 接地零序方向：..................................................................................................62
6.5 保护其它告警及异常校验.........................................................................................62
6.5.1 过负荷（定值中过负荷控制字投入）.............................................................62