Switching apparatus and method for a segment of an electric power line
First Claim
1. A switching apparatus for a segment of an electric power line having several phase lines, each of the phase lines having several conductors electrically insulated one from the other and connected in parallel for conducting a phase current, the conductors of each phase line being short-circuited among them at two ends of the segment, the apparatus comprising:
- a plurality of switches, each one of said switches opening and closing a corresponding one of said several conductors of said phase lines, wherein all said conductors of said phase lines are controlled by said switches; and
a control circuit controlling said switches for said conductors of said phase lines and providing a conduction path in each one of said phase lines at all times.
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Abstract
The switching apparatus is intended to be used with a segment of an electric power line having several phase lines. Each of the phase lines has several conductors electrically insulated one from the other and connected in parallel. The conductors of each phase line are short-circuited among them at two extremities of the segment. The apparatus comprises pairs of switches connected in parallel, for selectively opening and closing the conductors of each phase line, a detecting device for detecting current operating conditions of the segment, and a controlling device for controlling the pairs of switches according to the current operating conditions of the segment. The present invention also relates to a switching method.
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Citations
18 Claims
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1. A switching apparatus for a segment of an electric power line having several phase lines, each of the phase lines having several conductors electrically insulated one from the other and connected in parallel for conducting a phase current, the conductors of each phase line being short-circuited among them at two ends of the segment, the apparatus comprising:
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a plurality of switches, each one of said switches opening and closing a corresponding one of said several conductors of said phase lines, wherein all said conductors of said phase lines are controlled by said switches; and
a control circuit controlling said switches for said conductors of said phase lines and providing a conduction path in each one of said phase lines at all times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A switching method for a segment of an electric power line having several phase lines, each of the phase lines having several conductors electrically insulated one from the other and connected in parallel for conducting a phase current, the conductors of each phase line being short-circuited among them at two ends of the segment, the method comprising the following steps:
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(a) detecting current operating conditions of the electric power line; and
(b) controlling a plurality of switches, each one of said switches opening and closing a corresponding one of said several conductors of said phase lines, wherein all of said conductors of said phase lines are controlled by said switches according to operating conditions detected in step (a) for selectively opening and closing the conductors of each phase line so as to conduct the corresponding phase current through one or several conductors, said switches being independently controlled by control signals. - View Dependent Claims (15, 16, 17, 18)
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Specification