10/0.4kV变电所低压总进线断路器的越级跳闸分析,纯干货,收藏好
低压总进线断路器保护如何整定?才能避免出现越级跳闸呢?在设计10/0.4kV变电所系统时,其低压总进线断路器的短路保护整定推荐采用智能型断路器,电气设计在线教学狄老师,通过其自身带的ZSI功能(或者增配)来实现上下级的选择性跳闸的短路保护。下面是对变电所低压进线断路器的越级跳闸的简单分析,希望对大家对变电所低压进线断路器的短路保护整定加深下了解,不当之处敬请指正,谢谢!
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1、三相短路电流的计算
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHBzL2ltYWdlMTA5LjM2MGRvYy5jbi9Eb3dubG9hZEltZy8yMDIxLzA4LzExMTEvMjI4MTcxMzE2XzJfMjAyMTA4MTExMTI5MTQxMjk=.jpg)
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![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMTExMS8yMjgxNzEzMTZfN18yMDIxMDgxMTExMjkxNjI1NQ==.jpg)
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMTExMS8yMjgxNzEzMTZfOF8yMDIxMDgxMTExMjkxNjcwNw==.jpg)
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMTExMS8yMjgxNzEzMTZfOV8yMDIxMDgxMTExMjkxNzM1.jpg)
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2、避免断路器越级跳闸的两种应对措施
![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMTExMS8yMjgxNzEzMTZfMTFfMjAyMTA4MTExMTI5MTc3Mzg=.jpg)
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![](http://pic.ikafan.com/imgp/L3Byb3h5L2h0dHAvaW1hZ2UxMDkuMzYwZG9jLmNuL0Rvd25sb2FkSW1nLzIwMjEvMDgvMTExMS8yMjgxNzEzMTZfMTNfMjAyMTA4MTExMTI5MTgyODU=.jpg)
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