Power supply path-switching device, power supply path-switching system, and power supply path-switching method

Patent metadata

Field	Value
Publication number	US-10348440-B2
Application number	US-201615570462-A
Country	US
Kind code	B2
Filing date	May 9, 2016
Priority date	May 12, 2015
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

In order to provide a power supply path-switching device, a power supply path-switching system, and a power supply path-switching method with which it is possible to utilize to the maximum equipment in which a failure has not occurred without imparting a power supply function to a branch station side even when a failure has occurred in the power supply function of the trunk station side, a power supply path-switching device ( 10 ) is provided with a first switching means ( 20 ), a second switching means ( 30 ), a grounding means ( 40 ), and a power consumption circuit ( 50 ) that operates by being supplied with the power supply. When a failure occurs in a first power supply line ( 61 ), the power consumption circuit ( 50 ) grounds the first power supply line ( 61 ), one end of the power consumption circuit ( 50 ) being connected to the grounding means ( 40 ) and a second power supply line ( 62 ) being connected to the other end of the power consumption circuit ( 50 ). When a failure occurs in the second power supply line ( 62 ), the power consumption circuit ( 50 ) grounds the second power supply line ( 62 ), the first power supply line ( 61 ) being connected to one end of the power consumption circuit ( 50 ) and the other end of the power consumption circuit ( 50 ) being connected to a grounding means ( 24 ).

First claim

The invention claimed is:

1. A submarine repeater comprising:
an electric circuit configured to run by both-end power supply made by a current passed between a first terminal and a second terminal via a first power supply line connected to the first terminal and a second power supply line connected to the second terminal; and
a ground circuit configured to ground a connected power supply line,
wherein the electric circuit detects a fault occurred in the first power supply line or the second power supply line, connects a non-fault power supply line without the fault to the ground circuit and runs by one-end power supply made by a current passed through the non-fault power supply line and the ground circuit.

2. The submarine repeater according to claim 1 , further comprising:
a first switch configured to connect selectively the first power supply line to the ground circuit or the second power supply line; and
a second switch configured to connect selectively the second power supply line to the ground circuit or the first power supply line,
wherein the electric circuit connects the non-fault power supply line to the ground circuit, by controlling at least one of the first switch and the second switch based on the fault.

3. The submarine repeater according to claim 2 , wherein
the electric circuit multiplexes or branches a third light signal to or from a first light signal and a second light signal, the first light signal being transmitted to and received from the first terminal that supplies power to the first power supply line, the second light signal being transmitted to and received from the second terminal that supplies power to the second power supply line, and the third light signal being transmitted to and received from the third terminal.

4. The submarine repeater according to claim 3 ,
wherein
the electrical circuit is a ROADM (reconfigurable optical add/drop multiplexer) circuit that controls multiplexing or branching of a light signal.

5. A submarine repeating system comprising:
the submarine repeater according to claim 4 ; and
a branch device configured to connect the first power supply line and the second power supply line to each other based on an operation of the submarine repeater.

6. The submarine repeating system according to claim 5 ,
wherein
the branch device includes a first power supply route for causing current supplied from the first power supply line to flow to the second power supply line through the submarine repeater, and a second power supply route for causing current supplied from the first power supply line to flow to the second power supply line without passing through the submarine repeater, and
when power supply in the submarine repeater is normally operating, the branch device selects the first power supply route, and when power supply in the submarine repeater is not normally operating, the branch device selects the second power supply route.

7. A submarine repeating system comprising:
the submarine repeater according to claim 3 ; and
a branch device configured to connect the first power supply line and the second power supply line to each other based on an operation of the submarine repeater.

8. The submarine repeating system according to claim 7 ,
wherein
the branch device includes a first power supply route for causing current supplied from the first power supply line to flow to the second power supply line through the submarine repeater, and a second power supply route for causing current supplied from the first power supply line to flow to the second power supply line without passing through the submarine repeater, and
when power supply in the submarine repeater is normally operating, the branch device selects the first power supply route, and when power supply in the submarine repeater is not normally operating, the branch device selects the second power supply route.

9. The submarine repeating according to claim 8 , wherein
the branch device includes:
first to third diode pairs each formed of two diodes arranged in series in a same direction, the first to third diode pairs being arranged in parallel;
a first switching circuit configured to include one end connected to a second port of the submarine repeater, or to a midpoint between the second diode pair, and to include another end connected to the second power supply line, the second port being a node between the second power supply line and another end of the electric circuit;
a second switching circuit configured to include one end connected to a midpoint between the third diode pair, or to the second port, and to include another end connected to a first port of the submarine repeater, the first port being a node between the first power supply line and one end of the electric circuit; and
a controller configured to control a connection destination of each of the first switching circuit and the second switching circuit,

wherein
the first power supply line is connected to a midpoint between the first diode pair,
when the first power supply route is selected, the controller connects one end of the first switching circuit to a second port of the electric circuit, and connects one end of the second switching circuit to a midpoint between the third diode pair, and
when the second power supply route is selected, the controller connects one end of the first switching circuit to a midpoint between the second diode pair, and connects one end of the second switching circuit to the second port.

10. The submarine repeating system according to claim 9 , wherein
the branch device includes a monitor configured to monitor presence or absence of a failure in a power supply path from the first power supply line to the electric circuit, and in a power supply path from the second power supply line to the electric circuit, and when a failure is detected by the monitor, the first power supply route is switched to the second power supply route.

11. The submarine repeating system according to claim 9 , further comprising:
the first terminal configured to supply power to the first power supply line and transmits and receives the first light signal;
the second terminal configured to supply power to the second power supply line and transmits and receives the second light signal;
the third terminal configured to transmit and receive the third light signal;
a first composite optical cable configured to connect the submarine repeater to the first terminal;
a second composite optical cable configured to connect the submarine repeater to the second terminal;
an optical cable configured to connect the submarine repeater to the third terminal;
a first amplifier configured to be arranged on the first composite optical cable and to amplify light intensity of the first light signal; and
a second amplifier configured to be arranged on the second composite optical cable and to amplify light intensity of the second light signal.

12. The submarine repeating system according to claim 8 , wherein
the branch device includes a monitor configured to monitor presence or absence of a failure in a power supply path from the first power supply line to the electric circuit, and in a power supply path from the second power supply line to the electric circuit, and when a failure is detected by the monitor, the first power supply route is switched to the second power supply route.

13. The submarine repeating system according to claim 8 , further comprising:
the first terminal configured to supply power to the first power supply line and transmits and receives the first light signal;
the second terminal configured to supply power to the second power supply lin

Assignees

• Nec Corp

Inventors

• Aida Ryuji

Classifications

• H04B10/03

  Arrangements for fault recovery · CPC title

• H04B3/44

  Arrangements for feeding power to a repeater along the transmission line · CPC title

• H02J9/06

  with automatic change-over {, e.g. UPS systems} · CPC title

• H02H3/00

  Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection (specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems H02H7/00; systems for change-over to standby supply H02J9/00 ){; integrated protection (for motors H02H7/0822)} · CPC title

• H04Q2011/0049

  Crosstalk reduction; Noise; Power budget · CPC title