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Direct current interruption device

A technology for cutting off device and direct current, which is applied in the direction of DC network circuit device, circuit device, emergency protection circuit device, etc., and can solve problems such as complex structure and so on.

Active Publication Date: 2020-04-17
TOSHIBA FUEL CELL POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the vicinity of this node, a DC current cut-off device is installed for each DC transmission line, so the more DC transmission lines are connected, the more complicated the structure will be

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0028] refer to figure 1 The DC current interrupter according to the first embodiment will be described. figure 1 It is a configuration diagram of the DC current interrupter according to the embodiment.

[0029] figure 1 The shown DC current interrupter 1 includes: mechanical circuit breakers 2-1 to 2-3, converters 3-1 to 3-3, semiconductor interrupter (S) 4, rectifier device (rectifier element) 5-1 to 5-3, converter device (C) 7-1 to 7-3, control unit 9 . In addition, mechanical circuit breakers 2 - 1 to 2 - 3 are examples of mechanical contact type circuit breakers.

[0030] The direct current transmission circuit to which the direct current interruption device 1 is applied includes the direct current transmission lines 11 to 13 and a node j (first node) to which the direct current transmission lines 11 to 13 are electrically joined. The direct current transmission lines 11 to 13 respectively correspond to the three systems, and are electrically connected to each other a...

no. 2 approach

[0104] refer to Figure 4 A direct current interruption device according to a second embodiment will be described. Figure 4 It is a configuration diagram of the DC current interrupter according to the embodiment. with figure 1 The differences will be explained centering on.

[0105] Figure 4 The shown DC current cutoff device 1 includes: mechanical circuit breakers 2-1 to 2-3, converters 3-1 to 3-3, semiconductor breakers 4-1 to 4-3, rectifier device 5, commutator Device 7, control unit 9.

[0106] The direct current transmission circuit to which the direct current interruption device 1 is applied includes the direct current transmission lines 11 to 13 and a node j2 (first node) to which the direct current transmission lines 11 to 13 are electrically joined.

[0107] The DC current interrupter 1 further includes a common auxiliary line 20 , an auxiliary line 21 (first auxiliary line), an auxiliary line 22 (second auxiliary line), and an auxiliary line 23 (third auxiliar...

no. 3 approach

[0124] refer to Figure 5 and Figure 6 A direct current interruption device according to a third embodiment will be described. Figure 5 It is a configuration diagram of the DC current interrupter according to the embodiment. with figure 1 The differences will be explained centering on.

[0125] Figure 5 The shown DC current cutoff device 1 includes: mechanical circuit breakers 2-1 and 2-2, converters 3-1 and 3-2, semiconductor breakers 4, rectifiers 5-1 and 5-2, commutation Devices 7 - 1 and 7 - 2 , control unit 9 , and converter 10 . In addition, the converter 10 may be a device external to the DC current cutoff device 1 .

[0126] The DC transmission circuit to which the DC current interrupter 1 is applied includes the DC transmission lines 11 , 12 , 14 and a node j (first node) to which the DC transmission lines 11 , 12 , 14 are electrically connected.

[0127] The DC current interrupter 1 further includes a common auxiliary line 20 , an auxiliary line 21 (first a...

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Abstract

The direct current interruption device is provided in a direct current power transmission circuit in which at least a first direct current power transmission line and a second direct current power transmission line are electrically connected to each other at a first coupling point. A first auxiliary line is electrically connected to a first position on the first direct current power transmission line. A second auxiliary line is electrically connected to a second position on the second direct current power transmission line. A first unit is provided on a shared auxiliary line which is electrically connected between the first coupling point and a second coupling point at which the first auxiliary line and the second auxiliary line are electrically connected. Second units are respectively provided on a first line which is the first direct current power transmission line or the first auxiliary line, and a second line which is the second direct current power transmission line or the secondauxiliary line. The first unit and one of the second units are semiconductor circuit breakers and the other of the second units is a commutation device that commutes a current to the semiconductor circuit breakers.

Description

technical field [0001] Embodiments of the present invention relate to a direct current cut-off device. Background technique [0002] The DC current cut-off device is a device that cuts off the current flowing in the DC transmission line. As one of such forms, a DC current interrupter provided with a semiconductor switch is known. In a direct current transmission circuit that transmits direct current power using direct current transmission lines of a plurality of systems, there is a direct current transmission circuit having a node to which a plurality of direct current transmission lines are connected. In the vicinity of this node, a DC current cutoff device is provided for each DC transmission line, so the more DC transmission lines are connected, the more complicated the structure may be. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: International Publication No. 2011 / 57675 Pamphlet Contents of the invention [0006] The problem...

Claims

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Application Information

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IPC IPC(8): H02H3/087H01H33/59H02H3/00H02J13/00
CPCH02H3/00H02H3/087H02J13/00H01H33/596H02J1/084Y02E60/60
Inventor 儿山裕史森川龙一石黑崇裕
Owner TOSHIBA FUEL CELL POWER SYST
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