发明申请
WO2013184332A1 SYSTEM AND METHOD FOR HIGH RESISTANCE GROUND FAULT DETECTION AND PROTECTION IN POWER DISTRIBUTION SYSTEMS
审中-公开
基本信息:
- 专利标题： SYSTEM AND METHOD FOR HIGH RESISTANCE GROUND FAULT DETECTION AND PROTECTION IN POWER DISTRIBUTION SYSTEMS
- 专利标题（中）：电力分配系统中高电压接地故障检测与保护的系统与方法
- 申请号：PCT/US2013/041753 申请日：2013-05-20
- 公开(公告)号：WO2013184332A1 公开(公告)日：2013-12-12
- 发明人： LI, Huaqiang
- 申请人： EATON CORPORATION
- 申请人地址： 1000 Eaton Boulevard Cleveland, OH 44122 US
- 专利权人： EATON CORPORATION
- 当前专利权人： EATON CORPORATION
- 当前专利权人地址： 1000 Eaton Boulevard Cleveland, OH 44122 US
- 代理机构： ZIOLKOWSKI, Timothy, J. et al.
- 优先权： US13/487,322 20120604
- 主分类号： H02H3/52
- IPC分类号： H02H3/52 ; G01R31/02 ; H02H7/122 ; H02H3/16
摘要：
A system and method for detecting high resistance ground faults in a power distribution system is disclosed. A fault detection and protection system is provided that includes a plurality of current sensors to measure current on the three phase output of the converter-inverter arrangement of the power distribution system and a controller configured to measure the three phase current on the three phase output, extract a fundamental current component for each phase of the three phase output, extract a third harmonic component for each phase of the three phase output, compare the fundamental current component and the third harmonic component extracted from each phase to a first threshold and a second threshold, respectively, and detect a ground fault on a phase of the three phase output based on the comparisons of the fundamental current component and the third harmonic component to the first and second thresholds.
摘要（中）：
公开了一种用于检测配电系统中的高电阻接地故障的系统和方法。 提供一种故障检测和保护系统，其包括多个电流传感器，以测量配电系统的转换器 - 逆变器装置的三相输出端上的电流;以及控制器，被配置为测量三相输出上的三相电流， 提取三相输出的每相的基波电流分量，提取三相输出的每相的三次谐波分量，将从每相提取的基波电流分量和三次谐波分量进行比较，将其从第一阈值和第二阈值 并且基于基本电流分量和第三谐波分量与第一和第二阈值的比较来检测三相输出的相位上的接地故障。
IPC结构图谱:
| H | 电学 |
| --H02 | 发电、变电或配电 |
| ----H02H | 紧急保护电路装置 |
| ------H02H3/00 | 对正常电工作情况的不希望有的变化直接响应的自动断开紧急保护电路装置，有或无事后再连接 |
| --------H02H3/50 | .对出现不正常波形响应的，例如在直流装置中出现交流 |
| ----------H02H3/52 | ..对出现谐波响应的 |