Power receiving equipment

Abstract

This design ensures maintainability while creating a compact power receiving system with a small width. [Solution] In the power receiving equipment, a first circuit breaker (11) and a second circuit breaker (41) are arranged vertically on the rear side inside the housing (50). The inside of the housing is divided into an upper section (10) that houses a first busbar conductor (12) and a lower section (20) that houses a second busbar conductor (42). A first cable (13) and a second cable (43) are led out from the bottom of the lower section to the outside of the housing. The first cable connects the upper section and the lower section on the front side inside the housing and is fixed to the housing in the upper section by a grounded bracket (14).

Description

Technical Field

[0001] The present disclosure relates to power receiving equipment.

Background Art

[0002] There is known power receiving equipment that includes two circuit breakers and circuits connected to the respective circuit breakers.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] While ensuring maintainability, it is desired to realize compact power receiving equipment with a small lateral width.

Means for Solving the Problems

[0005] To solve the above problems, a power receiving system according to one aspect of the present disclosure comprises a first circuit breaker, a first bus conductor connected to the first circuit breaker, a first cable connected to the first bus conductor, a second circuit breaker, a second bus conductor connected to the second circuit breaker, a second cable connected to the second bus conductor, and a housing, wherein the first and second circuit breakers are arranged vertically on the rear side inside the housing, the inside of the housing is divided into an upper section housing the first bus conductor and a lower section located below the upper section housing the second bus conductor, the first cable and the second cable are led out from the lower part of the lower section to the outside of the housing, the first cable connects the upper and lower sections on the front side inside the housing and is fixed to the housing within the upper section by a grounded bracket. [Effects of the Invention]

[0006] According to one aspect of this disclosure, a compact power receiving system with a small width is realized while ensuring maintainability. [Brief explanation of the drawing]

[0007] [Figure 1] This is a transparent view of a power receiving equipment as seen from the side, according to one embodiment of the present disclosure. [Figure 2] This is a transparency diagram showing the partitioning of the power receiving equipment shown in Figure 1. [Figure 3] This is a cross-sectional view along line III-III shown in Figure 1. [Figure 4] Figure 1 shows a cross-sectional view along the line IV-IV. [Figure 5] This is a cross-sectional view along the VV line shown in Figure 1. [Figure 6] This is a transparent view of a known power receiving facility from the side. [Figure 7] This is a cross-sectional view along the line VII-VII shown in Figure 6. [Figure 8] Figure 6 shows a cross-sectional view along the line VIII-VIII. [Figure 9] Figure 6 shows a cross-sectional view of the IX-IX line. [Modes for carrying out the invention]

[0008] [Embodiment 1] <Outline of the configuration of power receiving equipment 100> Hereinafter, one embodiment of the present disclosure will be described in detail with reference to Figures 1 to 5. Figure 1 is a side view of the power receiving equipment 100 according to the present disclosure. The power receiving equipment 100 is also referred to as a switchgear or cubicle.

[0009] The front of the power receiving equipment 100 is the side that houses the control panel 54. In other words, in the power receiving equipment 100, the front corresponds to the side from which the worker stands when operating the power receiving equipment 100. Furthermore, the side opposite the front is defined as the rear. The left and right directions are defined as the direction in which the worker faces when standing in front of the power receiving equipment 100 and directly facing the equipment 100. The left and right direction and the width direction are synonymous.

[0010] The power receiving equipment 100 includes a first circuit breaker 11, a first busbar conductor 12, a first cable 13, a second circuit breaker 41, a second busbar conductor 42, a second cable 43, a housing 50, a bracket 14, a first partition plate 51, a second partition plate 52, and a main busbar 53.

[0011] The enclosure 50 houses the various parts of the power receiving equipment 100 inside.

[0012] The main busbar 53 is connected to the main busbars of other power receiving equipment on the left and right sides of the power receiving equipment 100 when the power receiving equipment 100 is arranged side by side with other power receiving equipment so that their left and right sides are in contact. In other words, the main busbar 53 is arranged across the width of the power receiving equipment 100. The first circuit breaker 11 and the second circuit breaker are connected to the main busbar 53.

[0013] As the first circuit breaker 11 and the second circuit breaker 41, a vacuum circuit breaker can be cited as an example. The first circuit breaker 11 and the second circuit breaker 41 are arranged vertically on the back side inside the housing 50. Also, in consideration of the workability of maintenance, the first circuit breaker 11 may be placed on the circuit breaker carriage 111 and the second circuit breaker 41 may be placed on the circuit breaker carriage 411, and each may be able to be pulled out to the back side. The first circuit breaker 11 is a circuit breaker that opens and closes the first circuit, and the second circuit breaker 41 is a circuit breaker that opens and closes the second circuit. Each of the first circuit and the second circuit is a three-phase circuit.

[0014] The first bus conductor 12 and the second bus conductor 42 are each constituted by a rigid conductor. Each of the first bus conductor 12 and the second bus conductor 42 for each phase is composed of one or a plurality of rigid conductor parts.

[0015] The first bus conductor 12 is connected to the secondary side of the first circuit breaker 11, and the first cable 13 is connected to the first bus conductor 12. Also, the second bus conductor 42 is connected to the secondary side of the second circuit breaker 41, and the second cable 43 is connected to the second bus conductor 42. The first cable 13 and the second cable 43 are drawn out to the outside of the housing 50 and connected to external equipment.

[0016] The first partition plate 51 and the second partition plate 52 are plates that partition the inside of the housing 50 and are removable. Details will be described later.

[0017] The bracket 14 supports the first cable 13 and is made of a conductor. The bracket 14 is fixed to the inner wall of the housing 50 and is grounded.

[0018] <Section of the power receiving equipment 100> The section (compartment) of the power receiving equipment 100 will be described using FIG. 2 as well. FIG. 2 is a perspective view showing the section of the power receiving equipment 100. The inside of the housing 50 is divided into an upper section 10 and a lower section 20. In the power receiving equipment 100 of Embodiment 1, further, the lower section 20 is divided into a front side section 30 and a back side section 40.

[0019] The upper section 10 houses the first busbar conductor 12, and the lower section 20, located below the upper section 10, houses the second busbar conductor 42. The first busbar conductor 12 and the first cable 13 are connected inside the upper section 10. Furthermore, the front section 30 houses the first cable 13. The rear section 40, located further back than the front section 30, houses the second busbar conductor 42 and the second cable 43. The second busbar conductor 42 and the second cable 43 are connected inside the rear section 40.

[0020] In these compartments, the first partition plate 51 separates the front side of the front compartment 30, and the second partition plate 52 separates the front compartment 30 from the rear compartment 40.

[0021] Furthermore, the first cable 13 and the second cable 43 are routed out from the bottom of the lower compartment 20 to the outside of the housing 50. The first cable 13 also connects the upper compartment 10 and the lower compartment 20 on the front side inside the housing 50 and is fixed to the housing 50 within the upper compartment 10 by a grounded bracket 14. In particular, in the power receiving equipment 100 of Embodiment 1, the first cable 13 connects the upper compartment 10 and the front compartment 30 on the front side inside the housing 50. Therefore, the first cable 13 is routed out from the bottom of the front compartment 30 to the outside of the housing 50. Also in particular, in the power receiving equipment 100 of Embodiment 1, the second cable 43 is routed out from the bottom of the rear compartment 40 to the outside of the housing 50.

[0022] Furthermore, the upper section 10, the front section 30, and the rear section 40 are not divided into left and right sections, and their widths are all the same. Therefore, the power receiving equipment 100 can be made compact without increasing the width of the enclosure.

[0023] <First busbar conductor 12, first cable 13, second busbar conductor 42, and second cable 43> The first cable 13 and the second cable 43 will be explained using Figures 3 and 4, respectively. Figure 3 is a cross-sectional view along line III-III shown in Figure 1. Figure 4 is a cross-sectional view along line IV-IV shown in Figure 1.

[0024] As shown in Figure 3, the first cables 13 for each phase, each connected to the first bus conductor 12 of each phase, are bundled together into a single cable partway through. The first cables 13 are fixed in place by a bracket 14 at the point where they are bundled into a single cable. The exit of the first cables 13 to the outside is offset from the left and right center of the power receiving equipment 100 when viewed from the front of the power receiving equipment 100. At the connection point with the first bus conductor 12, one of the first cables 13 separated for each phase is connected to the first bus conductor 12 at the center in the width direction of the power receiving equipment 100, and the remaining two are connected to the first bus conductor 12 at positions equally spaced from the center to the left and right.

[0025] Next, as shown in Figure 4, the second cables 43 of each phase, which are connected to the second bus conductor 42 of each phase, are bundled together partway to form a single cable. The exits of the second cables 43 to the outside are offset from the left and right centers of the power receiving equipment 100 when viewed from the front of the power receiving equipment 100. At the connection points with the second bus conductor 42, one of the second cables 43 separated for each phase is connected to the second bus conductor 42 at the center in the width direction of the power receiving equipment 100, while the remaining two are connected to the second bus conductor 42 at positions equally spaced from the center to the left and right.

[0026] The shape of the first busbar conductor 12 will be explained using Figure 5. Figure 5 is a cross-sectional view of the VV line shown in Figure 1. Due to the connection position with the first cable 13, one of the first busbar conductors 12 of each phase is located in the center in the width direction of the power receiving equipment 100. The remaining two of the busbar conductors 12 of each phase are located at equal intervals to the left and right from the center. In a plan view, the first busbar conductors 12 of each phase are formed in a generally straight line. Although not shown, the second busbar conductor 42 has a similar shape.

[0027] <Maintenance procedure for the first cable 13> The following describes how to maintain the first cable 13.

[0028] First, the worker sets the first circuit to ground potential. The second circuit may be energized or in a charged state.

[0029] Next, the worker removes the first partition plate 51. He also removes the partition plate on the front side of the upper compartment 10. This exposes the first circuit, including the first cable 13.

[0030] Next, the worker performs maintenance on the first cable 13. At this time, the rear compartment 40 is closed off by the second partition plate 52, and the second circuit is not exposed, so maintenance on the first cable 13 is possible even if the second circuit is energized or charged.

[0031] <Maintenance procedure for the second cable 43> The following describes how to maintain the second cable 43.

[0032] First, the worker sets the second circuit to ground potential. The first circuit may be energized or in a charged state.

[0033] Next, the worker removes the first partition plate 51 and the second partition plate 52 in that order. This exposes the second circuit, including the second cable.

[0034] Next, the worker performs maintenance on the second cable 43. At this time, since the sheath of the first cable 13 is grounded by the bracket 14 inside the upper compartment 10, the surface potential of the first cable 13 exposed in the front compartment 30 is at ground potential, and maintenance of the second cable 43 is possible even when the first circuit is energized or charged. In this way, according to Embodiment 1, maintenance of the cables of the other circuit can be performed even when either the first circuit or the second circuit is energized or charged.

[0035] <Comparative Example> A comparative example of the power receiving equipment will be explained using Figures 6 to 9. Figure 6 is a transparent view of the comparative example power receiving equipment 100C from the side. This power receiving equipment 100C comprises a housing 50C, two circuit breakers 11C and 21C, two busbar conductors 12C and 22C connected to the two circuit breakers 11C and 21C respectively, and two cables 13C and 23C connected to the two busbar conductors 12C and 22C respectively.

[0036] The enclosure 50C is composed of two compartments 10C and 20C. Compartment 10C houses the bus conductor 12C and cable 13C, while compartment 20C houses the bus conductor 22C and cable 23C. In other words, in the comparative example, the first circuit is housed in compartment 10C, and the second circuit is housed in compartment 20C. Thus, in the power receiving equipment 100C of the comparative example, compartment 10C, which houses the first circuit, and compartment 20C, which houses the second circuit, are separate compartments. Therefore, even if either the first or second circuit is energized or charged, maintenance can be performed on the cable of the other circuit.

[0037] Figure 7 is a cross-sectional view of the front side of the housing 50C shown in Figure 6, along line VII-VII. Near the front of the housing 50C, at the bottom of the housing 50C from which the cables are routed, the two compartments 10C and 20C are arranged left and right when viewed from the front. This ensures that cables 13C and 23C for maintenance can be accessed from the front side of the housing 50C. However, this necessitates a larger width for the housing 50C compared to the power receiving equipment 100 according to Embodiment 1.

[0038] The two circuit breakers 11C and 21C are arranged vertically along the centerline in the width direction of the housing 50C, similar to the power receiving equipment 100 according to Embodiment 1. The reason for arranging the two circuit breakers 11C and 21C near the center is to facilitate removal during maintenance. In such power receiving equipment 100C, the two cables 13C and 23C are led out from the bottom of the housing 50C to conduct electricity from outside the power receiving equipment 100C. At this time, as shown in Figure 7, the cables 13C and 23C are arranged separately on the left and right sides so that they can be housed in their respective compartments.

[0039] Figure 8 is a cross-sectional view of the VIII-VIII line shown in Figure 6. Figure 9 is a cross-sectional view of the IX-IX line shown in Figure 6. Since the respective cables 13C and 23C are arranged on the left and right, the respective bus conductors 12C and 22C connected to the cables 13C and 23C are also positioned biased to the left and right at the connection points with the cables. As a result, the respective bus conductors 12C and 22C are bent in the left and right directions, complicating the structure of the bus conductors.

[0040] Compared to the power receiving equipment described herein, the two cables 13C and 23C in power receiving equipment 100C were arranged side by side at the same depth, as shown in Figures 6 and 7. Therefore, as shown in Figures 8 and 9, the busbar conductors 12C and 22C had to be arranged eccentrically to the left and right.

[0041] Therefore, the power receiving equipment relating to this disclosure can be made compact with a small width while ensuring maintainability.

[0042] [Embodiment 2] Another embodiment relating to this disclosure will now be described. The power receiving equipment 100B has the same configuration as the power receiving equipment 100 relating to Embodiment 1, except that it does not have a second partition plate 52. In other words, the power receiving equipment 100B does not have a lower compartment further divided into a front compartment and a rear compartment.

[0043] Because the power receiving equipment 100B does not have a second partition plate 52, maintenance work on the second cable 43 can be performed on the second cable 43 in the same manner as the maintenance work method for the second cable 43 in Embodiment 1, without having to remove the second partition plate 52. However, in the power receiving equipment 100B according to Embodiment 2, the first cable 13 and the second cable 43 are exposed when the first partition plate 51 is removed. Therefore, unlike Embodiment 1, maintenance on the first cable 13 cannot be performed on the power receiving equipment 100B while the second circuit is energized or charged.

[0044] 〔summary〕 A power receiving system according to Embodiment 1 of the present disclosure comprises a first circuit breaker, a first bus conductor connected to the first circuit breaker, a first cable connected to the first bus conductor, a second circuit breaker, a second bus conductor connected to the second circuit breaker, a second cable connected to the second bus conductor, and a housing, wherein the first and second circuit breakers are arranged vertically on the rear side inside the housing, the inside of the housing is divided into an upper section housing the first bus conductor and a lower section located below the upper section housing the second bus conductor, the first cable and the second cable are led out from the lower part of the lower section to the outside of the housing, the first cable connects the upper and lower sections on the front side inside the housing and is fixed to the housing within the upper section by a grounded bracket.

[0045] In the power receiving equipment according to Embodiment 2 of the present disclosure, in Embodiment 1, the lower compartment is further divided into a front compartment for housing the first cable and a rear compartment located on the rear side of the front compartment for housing the second bus conductor and the second cable.

[0046] The power receiving equipment according to Embodiment 3 of the present disclosure comprises, in Embodiment 2, a removable first partition plate that separates the front side of the front compartment, and a removable second partition plate that separates the front compartment from the rear compartment.

[0047] In the power receiving equipment according to Embodiment 4 of this disclosure, in either Embodiment 2 or 3, the widths of the upper section, the front section, and the rear section are all the same.

[0048] This disclosure is not limited to the embodiments described above, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of this disclosure. [Explanation of Symbols]

[0049] 100 Power receiving equipment 10 Upper section 11 First circuit breaker 12 First busbar conductor 13. First cable 14 brackets 20 Lower section 30 Front side compartment 40 Rear side compartment 41 Second circuit breaker 42 Second busbar conductor 43 Second cable 50 cabinets 51. First partition plate 52 Second partition plate 53 Main busbar

Claims

1. The first circuit breaker, The first bus conductor connected to the first circuit breaker, The first cable connected to the first bus conductor, The second circuit breaker, The second bus conductor connected to the second circuit breaker, The second cable connected to the second bus conductor, A power receiving device comprising a housing and The first circuit breaker and the second circuit breaker are arranged vertically on the rear side inside the housing. The inside of the aforementioned enclosure is, The upper section housing the first busbar conductor, It is divided into a lower section located below the upper section and housing the second busbar conductor, The first cable and the second cable are routed out from the lower part of the lower section to the outside of the housing. The first cable connects the upper and lower compartments on the front side inside the housing and is fixed to the housing within the upper compartment by a grounded bracket, in the power receiving equipment.

2. The power receiving equipment according to claim 1, wherein the lower section is further divided into a front section for housing the first cable and a rear section located on the rear side of the front section for housing the second bus conductor and the second cable.

3. A partition plate that separates the front side of the aforementioned front side compartment, comprising a removable first partition plate, The power receiving equipment according to claim 2, further comprising a removable second partition plate that separates the front side compartment and the rear side compartment.

4. The power receiving equipment according to claim 2 or 3, wherein the widths of the upper section, the front section, and the rear section are all the same.

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