发明名称 |
Method for sectioning with a section switch a medium-voltage electric power distribution line exhibiting a disturbance, section switch for medium-voltage electric power distribution line applicable thereon and electronic circuit for detecting a fault current and comprised by said section switch |
摘要 |
A method for sectioning a medium-voltage distribution electric line evidencing a disturbance using a section switch. The steps are: (a) detecting a current having an amplitude and a wave form profile in the medium-voltage line; (b) analyzing the wave form profile to determine whether the fault is transient, permanent, a transformer input current or transformer in-rush current; (c) and determining the behavior of the section switch from the result of the wave form profile analysis. The section switch is installed on auxiliary branches of a distribution network having a main line that is protected by an automatic reset circuit breaker. The section switch has an opening mechanism having a coil and an electronic circuit. The electronic circuit has a power source for the coil and electronic circuit, a detector to detect current and an analyzer to determine whether the detected current is a transient or a permanent fault. |
申请公布号 |
US8125751(B2) |
申请公布日期 |
2012.02.28 |
申请号 |
US20050659306 |
申请日期 |
2005.05.11 |
申请人 |
CAVANNA JORGE;CAVANNA JAVIER;ABB TECHNOLOGY AG |
发明人 |
CAVANNA JORGE;CAVANNA JAVIER |
分类号 |
H02H3/08 |
主分类号 |
H02H3/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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