JP6642733B2 - DC input panel - Google Patents

Description

  The present invention relates to a DC input panel.

  Patent Document 1 discloses a DC input panel. The DC input panel includes a plurality of circuit breakers, a plurality of positive buses, and a plurality of negative buses.

Japanese Patent Application Laid-Open No. 2013-084759

  However, inside the DC input panel described in Patent Literature 1, one of the plurality of positive buses may approach one of the plurality of negative buses. In this case, the insulation distance between the positive bus and the negative bus is not ensured.

  The present invention has been made to solve the above problems. An object of the present invention is to provide a DC input panel capable of ensuring an insulation distance between a positive bus and a negative bus.

  The DC input panel according to the present invention receives the supply of the DC current, is arranged in a state where the respective output units are directed in the same direction, and when the DC current larger than a preset threshold is supplied, the DC current A plurality of circuit breakers for interrupting the supply of the plurality of, and a plurality of positive buses provided at the output units of the plurality of circuit breakers, respectively, and having a connection part protruding to one side from the output unit of the corresponding circuit breaker, A plurality of negative buses each provided at an output of the circuit breaker and having a connection protruding from the output of the corresponding breaker to the other side, and a positive side connected to each of the connections of the plurality of positive buses. A short-circuit bar, and a negative-side short-circuit bar connected to each of the connection portions of the plurality of negative-side buses.

  The DC input panel according to the present invention receives the supply of the DC current, is arranged in a state where the respective output units are directed in the same direction, and when the DC current larger than a preset threshold is supplied, the DC current A plurality of first circuit breakers for interrupting the supply of the first circuit breakers, and a plurality of first circuit breakers each provided at an output of the plurality of first circuit breakers and having a connection protruding to one side from the corresponding output of the first circuit breaker. Positive buses, a plurality of first negative buses each provided at an output portion of the plurality of first circuit breakers, and having a connection portion protruding to the other side from an output portion of the corresponding first circuit breaker; A first positive short-circuit bar connected to each of the connection portions of the first positive bus; a first negative short-circuit bar connected to each of the plurality of first negative bus connections; Receiving the supply and connecting the respective output units to the output units of the plurality of first circuit breakers. A plurality of second circuit breakers that are arranged in a direction facing each other and cut off the supply of the DC current when a DC current larger than a preset threshold is supplied; and the plurality of second circuit breakers. And a plurality of second negative buses each having a connection protruding to one side from an output of the corresponding second circuit breaker, and provided at the output of the plurality of second circuit breakers, respectively. A plurality of second negative buses each having a connection protruding from the corresponding output of the second circuit breaker to the other side; and a second positive short-circuit bar connected to each of the connections of the plurality of second negative buses. And a second negative short-circuit bar connected to each of the connection portions of the plurality of second negative buses.

  According to these inventions, the connection part of the positive bush protrudes to one side from the output part of the circuit breaker. In contrast, the connection of the negative bush protrudes from the output of the circuit breaker to the other side. Therefore, an insulation distance between the positive bus and the first negative bus can be ensured.

1 is a configuration diagram of a power supply system to which a DC input panel according to Embodiment 1 of the present invention is applied. FIG. 2 is a perspective view of a DC input panel according to Embodiment 1 of the present invention. FIG. 2 is a front view of a main part of the DC input panel according to Embodiment 1 of the present invention. It is a top view of the principal part of the DC input board in Embodiment 1 of this invention. FIG. 2 is a longitudinal sectional view of a main part of the DC input panel according to Embodiment 1 of the present invention. FIG. 2 is a longitudinal sectional view of a main part of the DC input panel according to Embodiment 1 of the present invention.

  An embodiment for carrying out the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. Duplicate description of this part is appropriately simplified or omitted.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of a power supply system to which a DC input panel according to Embodiment 1 of the present invention is applied.

  In FIG. 1, the power supply system includes a power system 1, a plurality of solar cell modules 2, and a power converter 3.

  For example, the power system 1 is operated by a power company. The solar cell module 2 is provided outdoors. Power conversion device 3 is connected between power system 1 and solar cell module 2.

  The power conversion device 3 includes a housing 4, a DC input panel 5, and a power conversion unit 6.

  The housing 4 is formed in a box shape. The DC input panel 5 is housed in the housing 4. The DC input panel 5 receives supply of DC power from the plurality of solar cell modules 2. The power conversion unit 6 is housed in the housing 4. The power conversion unit 6 receives supply of DC power from the DC input panel 5. The power conversion unit 6 converts the DC power into AC power. The power conversion unit 6 supplies the AC power to the power system 1.

Next, the DC input panel 5 will be described with reference to FIG.
FIG. 2 is a perspective view of the DC input panel according to Embodiment 1 of the present invention.

  As shown in FIG. 2, the DC input panel 5 includes a housing 7, a plurality of first circuit breakers 8a, a plurality of first positive buses 9a, a plurality of first negative buses 10a, and a first positive short circuit bar. 11a, a first negative short-circuit bar 12a, a plurality of second breakers 8b, a plurality of second positive buses 9b, a plurality of second negative buses 10b, a second positive short-circuit bar 11b, and a second negative short-circuit bar. 12b.

  For example, the storage body 7 is formed by combining a plurality of rods.

  The plurality of first circuit breakers 8a are housed on one side inside the housing 7. Each of the plurality of first circuit breakers 8a has an output unit (not shown). The plurality of first circuit breakers 8a are arranged in a line in the vertical direction. The plurality of first circuit breakers 8a are arranged with their output units facing in the same direction. For example, the plurality of first circuit breakers 8 a are arranged in a state where their respective output units are directed toward the center of the housing 7. The plurality of first circuit breakers 8a are provided so as to be able to receive supply of a direct current. The plurality of first circuit breakers 8a are provided so as to cut off the supply of the DC current when the DC current larger than a preset threshold is supplied.

  The plurality of first positive side buses 9a are housed on one side inside the housing 7. The plurality of first positive side buses 9a are respectively provided at the output units of the plurality of first circuit breakers 8a. Each of the plurality of first positive side buses 9a has a connection protruding to one side from the output of the corresponding first circuit breaker 8a. For example, each of the plurality of first positive side buses 9a has a connection projecting from the output of the corresponding first circuit breaker 8a to the rear of the housing 7.

  The plurality of first negative buses 10 a are housed in one side of the housing 7. The plurality of first negative buses 10a are respectively provided at the output units of the plurality of first circuit breakers 8a. Each of the plurality of first negative buses 10a has a connection projecting from the output of the corresponding first circuit breaker 8a to the other side. For example, each of the plurality of first negative buses 10a has a connection portion that projects forward of the housing 7 from the output portion of the corresponding first circuit breaker 8a.

  The first positive-side short-circuit bar 11a is housed on one side inside the housing 7. For example, the first positive short-circuit bar 11a is formed in a straight line. The first positive short-circuit bar 11a is electrically connected to each of the connecting portions of the plurality of first positive buses 9a.

  The first negative short-circuit bar 12a is housed in one side of the housing 7. For example, the first negative short-circuit bar 12a is formed in a straight line. The first negative short-circuit bar 12a is electrically connected to each of the connection portions of the plurality of first negative buses 10a.

  The plurality of second circuit breakers 8b are housed on the other side inside the housing 7. Each of the plurality of second circuit breakers 8b has an output unit (not shown). The plurality of second circuit breakers 8b are arranged in a line in the vertical direction. The plurality of second circuit breakers 8b are arranged with their respective output units directed in the same direction. For example, the plurality of second circuit breakers 8b are arranged with their respective output units facing the center of the housing 7. In this case, the plurality of second circuit breakers 8b are arranged in a state where their respective output units are oriented in a direction facing the output units of the plurality of first circuit breakers 8a. The plurality of second circuit breakers 8b are provided so as to be able to receive supply of a direct current. The plurality of second circuit breakers 8b are provided so as to cut off the supply of the DC current when the DC current larger than a preset threshold is supplied.

  The plurality of second positive bushes 9 b are stored on the other side inside the storage body 7. The plurality of second positive side buses 9b are provided at the output units of the plurality of second circuit breakers 8b, respectively. Each of the plurality of second positive side buses 9b has a connection protruding to one side from the output of the corresponding second circuit breaker 8b. For example, each of the plurality of second positive side buses 9b has a connection projecting from the output of the corresponding second circuit breaker 8b to the rear of the housing 7.

  The plurality of second negative buses 10 b are stored on the other side inside the storage body 7. The plurality of second negative buses 10b are respectively provided at the output units of the plurality of second circuit breakers 8b. Each of the plurality of second negative buses 10b has a connection protruding from the output of the corresponding second circuit breaker 8b to the other side. For example, each of the plurality of second negative buses 10b has a connection projecting forward of the housing 7 from the output of the corresponding second circuit breaker 8b.

  The second positive-side short-circuit bar 11b is stored on the other side inside the storage body 7. For example, the second positive short-circuit bar 11b is formed in a straight line. The second positive short-circuit bar 11b is electrically connected to each of the connecting portions of the plurality of second positive buses 9b.

  The second negative short-circuit bar 12b is housed inside the housing 7 on the other side. For example, the second negative short-circuit bar 12b is formed in a straight line. The second negative short-circuit bar 12b is electrically connected to each of the connecting portions of the plurality of second negative buses 10b.

Next, the first positive short-circuit bar 11a, the first negative short-circuit bar 12a, the second positive short-circuit bar 11b, and the second negative short-circuit bar 12b will be described with reference to FIGS.
FIG. 3 is a front view of a main part of the DC input panel according to Embodiment 1 of the present invention. FIG. 4 is a plan view of a main part of the DC input panel according to Embodiment 1 of the present invention. 5 and 6 are longitudinal sectional views of main parts of the DC input panel according to Embodiment 1 of the present invention.

  As shown in FIG. 3 and FIG. 4, the first positive short-circuit bar 11a, the first negative short-circuit bar 12a, the second positive short-circuit bar 11b, and the second negative short-circuit bar 12b have a longitudinal direction perpendicular to the longitudinal direction. And placed. The first positive short-circuit bar 11a, the first negative short-circuit bar 12a, the second positive short-circuit bar 11b, and the second negative short-circuit bar 12b are arranged with a gap in the width direction of the housing 4.

  As shown in FIGS. 3 and 4, each connection portion of the plurality of first negative buses 10 a is connected to the output of the first circuit breaker 8 a corresponding to each connection portion of the plurality of first positive buses 9 a. Close to the department. Each connection of the plurality of second negative buses 10b is closer to the corresponding output of the second circuit breaker 8b than each connection of the plurality of second positive buses 9b.

  As shown in FIG. 5, the first positive-side short-circuit bar 11a is arranged on the rear side of the housing 4. On the other hand, the first negative short-circuit bar 12 a is arranged on the front side of the housing 4. As a result, the first positive short-circuit bar 11a and the first negative short-circuit bar 12a are arranged with a gap in the depth direction of the housing 4.

  As shown in FIG. 6, the second positive-side short-circuit bar 11b is arranged on the rear side of the housing 4. On the other hand, the second negative short-circuit bar 12 b is arranged on the front side of the housing 4. As a result, the second positive short-circuit bar 11b and the second negative short-circuit bar 12b are arranged with a gap in the depth direction of the housing 4.

  According to the first embodiment described above, on one side of the housing 4, each connection portion of the plurality of first positive side buses 9 a protrudes to one side from the output portion of the corresponding first circuit breaker 8 a. . On the other hand, each connection portion of the plurality of first negative buses 10a protrudes from the corresponding output portion of the first circuit breaker 8a to the other side. Therefore, even when many first circuit breakers 8a are housed in the housing 7, the insulation distance between the plurality of first positive buses 9a and the plurality of first negative buses 10a can be ensured.

  Further, on the other side of the housing 4, each of the plurality of second positive side bushes 9b protrudes to one side of the corresponding second circuit breaker 8b. In contrast, each of the plurality of second negative buses 10b protrudes to the other side of the corresponding second circuit breaker 8b. Therefore, even when many second circuit breakers 8b are housed in the housing 7, the insulation distance between the plurality of second positive buses 9b and the plurality of second negative buses 10b can be ensured.

  The first circuit breakers 8a are arranged in a line. The first positive short-circuit bar 11a is formed in a straight line. The first negative short-circuit bar 12a is formed linearly. For this reason, workability when attaching the first positive short-circuit bar 11a and the first negative short-circuit bar 12a can be improved. Further, erroneous wiring between the first positive bus 9a and the first negative bus 10a can be suppressed.

  The second circuit breakers 8b are arranged in a line. The second positive short-circuit bar 11b is formed in a straight line. The second negative short-circuit bar 12b is formed linearly. For this reason, workability when attaching the second positive short-circuit bar 11b and the second negative short-circuit bar 12b can be improved. Further, erroneous wiring between the second positive side bus 9b and the second negative side bus 10b can be suppressed.

  Also, each connection of the plurality of first negative buses 10a is closer to the corresponding output of the first circuit breaker 8a than each connection of the plurality of first positive buses 9a. Therefore, when the first positive short-circuit bar 11a and the first negative short-circuit bar 12a are attached, workability from the front side of the housing 7 can be improved.

  Further, each connection of the plurality of second negative buses 10b is closer to the corresponding output of the second circuit breaker 8b than each connection of the plurality of second positive buses 9b. Therefore, when attaching the second positive short-circuit bar 11b and the second negative short-circuit bar 12b, workability from the front side of the housing 7 can be improved.

  The arrangement of the first positive bus 9a and the first negative bus 10a may be interchanged. At this time, the arrangement of the first positive short-circuit bar 11a and the first negative short-circuit bar 12a may be interchanged. Also in this case, the insulation distance between the plurality of first positive buses 9a and the plurality of first negative buses 10a can be ensured.

  Further, the arrangement of the second positive bus 9b and the second negative bus 10b may be interchanged. At this time, the arrangement of the second positive short-circuit bar 11b and the second negative short-circuit bar 12b may be interchanged. Also in this case, the insulation distance between the plurality of first positive buses 9a and the plurality of first negative buses 10a can be ensured.

  Also, the arrangement of the second positive bus 9b and the second negative bus 10b may be exchanged without exchanging the arrangement of the first positive bus 9a and the first negative bus 10a. At this time, the arrangement of the second positive short-circuit bar 11b and the second negative short-circuit bar 12b may be interchanged. In this case, the same circuit breaker, the positive bus, the negative bus, the positive short-circuit bar, and the negative short-circuit bar can be used on one side and the other side of the housing 7.

  Further, the arrangement of the first positive bus 9a and the first negative bus 10a may be interchanged, and the arrangement of the second positive bus 9b and the second negative bus 10b may not be exchanged. At this time, the arrangement of the first positive short-circuit bar 11a and the first negative short-circuit bar 12a may be interchanged. In this case, the same circuit breaker, the positive bus, the negative bus, the positive short-circuit bar, and the negative short-circuit bar can be used on one side and the other side of the housing 7.

  As described above, the DC input panel according to the present invention can be used for a system that secures the insulation distance between the positive bus and the negative bus.

  REFERENCE SIGNS LIST 1 power system, 2 solar cell module, 3 power conversion device, 4 housing, 5 DC input panel, 6 power conversion unit, 7 housing, 8a first circuit breaker, 8b second circuit breaker, 9a first positive bus 9b 2nd positive side bus, 10a 1st negative side bus, 10b 2nd negative side bus, 11a 1st positive side short bar, 11b 2nd positive side short bar, 12a 1st negative side short bar, 12b 2nd Negative short-circuit bar

Claims (5)

A plurality of circuit breakers that receive supply of DC current, are arranged in a state where their output units are oriented in the same direction, and cut off the supply of the DC current when a DC current larger than a preset threshold is supplied. When,
A plurality of positive buses each provided at an output part of the plurality of circuit breakers and having a connection part protruding to one side from an output part of the corresponding circuit breaker;
A plurality of negative buses each provided at an output of the plurality of circuit breakers and having a connection protruding from the output of the corresponding circuit breaker to the other side;
A positive short-circuit bar connected to each of the connection portions of the plurality of positive buses;
A negative short-circuit bar connected to each of the connections of the plurality of negative buses;
DC input panel equipped with. The plurality of circuit breakers are arranged in a line,
The positive short-circuit bar is formed in a straight line,
The DC input panel according to claim 1, wherein the negative short-circuit bar is formed in a straight line. A storage body that stores the plurality of circuit breakers, the plurality of positive buses, the plurality of negative buses, the positive short circuit bar, and the negative short circuit bar,
With
One connecting portion of each of the plurality of positive buses and each of the plurality of negative buses protrudes forward of the housing,
The DC input panel according to claim 1, wherein the other connecting portion of each of the plurality of positive buses and each of the plurality of negative buses protrudes rearward of the housing.   One connecting portion of each of the plurality of positive buses and each of the plurality of negative buses is more corresponding than the other connecting portion of each of the plurality of positive buses and each of the plurality of negative buses. 4. The DC input panel according to claim 3, which is close to an output of the circuit breaker. A plurality of first power supply units that receive supply of DC current, are arranged with their output units facing in the same direction, and shut off the supply of DC current when a DC current larger than a preset threshold is supplied. Circuit breaker,
A plurality of first positive buses each provided at an output of the plurality of first circuit breakers and having a connection protruding to one side from an output of the corresponding first circuit breaker;
A plurality of first negative buses each provided at an output of the plurality of first circuit breakers and having a connection protruding from the corresponding output of the first circuit breaker to the other side;
A first positive short-circuit bar connected to each of the connection portions of the plurality of first positive buses;
A first negative short-circuit bar connected to each of the connections of the plurality of first negative buses;
When the supply of DC current is received and the output units of the plurality of first circuit breakers are arranged in a state facing the output units of the plurality of first circuit breakers, a DC current larger than a preset threshold is supplied. A plurality of second circuit breakers for interrupting the supply of the DC current;
A plurality of second negative buses each provided at an output of the plurality of second circuit breakers and having a connection protruding to one side from an output of the corresponding second circuit breaker;
A plurality of second negative buses each provided at an output part of the plurality of second circuit breakers and having a connection part protruding from the corresponding output part of the second circuit breaker to the other side;
A second positive short-circuit bar connected to each of the connections of the plurality of second negative buses;
A second negative short-circuit bar connected to each of the connections of the plurality of second negative buses;
DC input panel equipped with.

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