发明名称 |
Detecting power quality events in power distribution networks |
摘要 |
Power quality (PQ) events in a waveform in a power distribution network are detected by sampling the waveform. For each sample, a normalized sample is determined by subtracting an undistorted waveform from the sample. An accumulated weighted log-likelihood ratio (LLR) is determined for all normalized samples, as well as a minimum of the accumulated weighted LLR. If the difference between the accumulated weighted LLR an the minimum LLR is greater than a predetermined threshold, then the PQ event is signaled. The network can be a smart grid. |
申请公布号 |
US8326576(B2) |
申请公布日期 |
2012.12.04 |
申请号 |
US20090650368 |
申请日期 |
2009.12.30 |
申请人 |
PUN MAN-ON;MITSUBISHI ELECTRIC RESEARCH LABORATORIES, INC. |
发明人 |
PUN MAN-ON |
分类号 |
G06F19/00;G01R21/00;G06F17/18 |
主分类号 |
G06F19/00 |
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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