RCS及LFP系列主变保护调试指导书(4)

● 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

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