| 摘要 |
A line phase identification system and method identifies the phase of a power line at a remote unknown-phase line ( 160 ) in a three-phase power distribution network ( 100 ). The instantaneous phase of a known-phase line ( 150 ) is measured and saved each GPS second using a 1-pps time mark of a GPS receiver ( 660 ). The instantaneous phase at the unknown-phase line ( 160 ) is measured at a single GPS second using the 1-pps time mark of a GPS receiver ( 660 ) and compared to the phase measurement taken from the known-phase line ( 150 ) at the same GPS second. The differential phase between these simultaneously taken known and unknown instantaneous phases will be close to either 0, +120, or -120 degrees, thus identifying the line phase at the line under test ( 160 ).
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