PHASE BALANCING OF POWER TRANSMISSION SYSTEM

摘要

Phase balancing techniques for power transmission systems are disclosed. In one embodiment, a phase balancing protocol (240) includes executing a first phase balancing protocol (350) in relation to a first power transmission section (400a). A second phase balancing protocol (370) may be executed if the first phase balancing protocol (350) is unable to provide a phase balanced condition. The first phase balancing protocol (350) may utilize a first ordering sequence (364) to rank the current flow on the power lines (16) of the first power transmission section (400a), while the second phase balancing protocol (370) may utilize a second ordering sequence (384) to rank the current flow on the power lines (16) of the first power transmission section (400a). The order sequences (364, 384) are opposite of each other—one ranks the current flows from high-to-low, and the other ranks the current flow from low-to-high.

主权项

1. A method of phase balancing a power transmission system, comprising:
measuring a current flow on each power line of a plurality of power lines of a first power transmission section of a power transmission system, wherein each said power line is of a different phase, wherein each said power line has at least one first device mounted thereon, wherein each said first device is disposable in each of first and second modes, and wherein changing a given said first device between said first and second modes changes said current flow on its corresponding said power line; executing a first phase balancing protocol, comprising:
generating a first ranking of said plurality of power lines using a first ordering sequence of said current flows on said power lines; andexecuting a first switching step comprising switching at least one said first device, on at least one of said power lines, into a first modal configuration in an attempt to achieve a phase balanced condition between each adjacent pair of said power lines in said first ranking; and executing a second phase balancing protocol upon an occurrence of a first condition, comprising:
generating a second ranking of said plurality of power lines using a second ordering sequence of said current flows on said power lines, wherein said second ordering sequence is opposite of said first ordering sequence; andexecuting a second switching step comprising switching at least one said first device, on at least one of said power lines, into a second modal configuration in an attempt to achieve said phase balanced condition between each adjacent pair of said power lines in said second ranking, wherein said first modal configuration comprises said first device being in one of said first and second modes, and wherein said second modal configuration comprises said first device being in the other of said first and second modes.