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电气设备交接试验标准培训课件.ppt

  • 2026-04-01 16:26:40
电气设备交接试验标准培训课件.ppt
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1、交接试验目的

检验制造单位生产的电气设备质量是否合格。

检验电气设备在运输过程中是否损坏,安装质量是否符合要求

判断新安装设备是否存在缺陷或隐患,是否具备投运条件。

为以后运行、检修和事故分析提供基础性参考数据

2、交接试验相关标准

GB 50150-2016《电气装置安装工程电气设备交接试验标准》

GB/T 7252《变压器油中溶解气体分析和判断导则》

GB/T 1094.10《电力变压器 第10部分:声级测定》

4、交接试验基本要求

油浸式变压器及电抗器的绝缘试验应在充满合格油,静置一定时间,待气泡消除后方可进行。静置时间:220kV的须 48h 以上,110kV 及以下的须 24h 以上。

交流耐压试验时加至试验标准电压后的持续时间,无特殊说明时应为 1min。

绝缘试验应在良好天气且周围温度不宜低于 5℃,空气相对湿度不宜高于80%。注意环境温度的影响,对油浸式变压器、电抗器及消弧线圈,应以上层油温作为测试温度。

绝缘电阻测量:60s 的绝缘电阻值;吸收比测量:60s 与 15s 绝缘电阻值的比值;极化指数测量:10min 与1min 绝缘电阻值的比值 

多绕组设备进行绝缘试验时,非被试绕组应予短路接地。

测量绝缘电阻时,采用兆欧表的电压等级应按下列规定执行: 

100V ~500V的电气设备或回路:500V、100MΩ及以上

10kV及以上电气设备或回路:2.5kV 或 5kV、10000MΩ 及以上       

极化指数测量:兆欧表短路电流不应低于2mA。

当只有个别项目达不到标准的规定时,则应根据全面的试验记录进行综合判断,方可投入运行。

变压器交接试验项目

1、 绝缘油试验或FS6气体试验; 

2、 测量绕组连同套管的直流电阻;

3 、检查所有分接头的电压比;

4 、检查变压器的三相接线组别和单相变压器引出线的极性;

5 、变压器绕组变形试验;

6、 非纯瓷套管的试验; 

7、 有载调压切换装置的检查和试验; 

8 、测量绕组连同套管的绝缘电阻、吸收比或极化指数;

9、 测量绕组连同套管的介质损耗角正切值 tanδ 与电容量; 

10 、测量铁芯及夹件的绝缘电阻;

11、 绕组连同套管的交流耐压试验; 

12 、绕组连同套管的长时感应电压试验带局部放电试验; 

13 、额定电压下的冲击合闸试验; 

14 、检查相位; 

15、 测量噪音;

2、测量绕组连同套管的直流电阻

作用:

a、检查绕组接头的焊接质量和绕组是否匝间短路;

b、检查分接开关触头接触是否良好,位置指示是否准确;

c、引出线是否断裂

d、多股导线并绕的绕组是否断股;

e、接线板连接头是否连接良好。

3、检查所有分接头的电压比

作用:

a、检查变压器绕组匝数比的准确性;

b、检查分接开关的状况;

c、故障后检查是否存在匝间短路;

d、判断变压器是否可以并列运行

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  1. CONNECT:[ UseTime:0.000518s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000618s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000304s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000283s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000492s ]
  6. SELECT * FROM `set` [ RunTime:0.000195s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000551s ]
  8. SELECT * FROM `article` WHERE `id` = 487758 LIMIT 1 [ RunTime:0.003560s ]
  9. UPDATE `article` SET `lasttime` = 1775785487 WHERE `id` = 487758 [ RunTime:0.012520s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000277s ]
  11. SELECT * FROM `article` WHERE `id` < 487758 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000517s ]
  12. SELECT * FROM `article` WHERE `id` > 487758 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000429s ]
  13. SELECT * FROM `article` WHERE `id` < 487758 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.014394s ]
  14. SELECT * FROM `article` WHERE `id` < 487758 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.041908s ]
  15. SELECT * FROM `article` WHERE `id` < 487758 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.026713s ]
0.172135s