Power receiving / transforming facility

Abstract

To perform a maintenance of a monitoring apparatus without performing power interruption of a high voltage chamber.SOLUTION: A power receiving / transforming facility (1) comprises a rear shield plate (18) including a movable plate (81) on which rear monitoring cameras (24 and 26) are mounted. The movable plate (81) is movable to a monitoring position (P1) where the rear monitoring cameras (24 and 26) are located within a high voltage chamber (14) and a maintenance position (P2) where the rear monitoring cameras (24 and 26) are located within a rear low voltage chamber (16).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a power receiving and transforming facility. [Background technology]

[0002] Generally, power receiving and transforming facilities have a roughly box-shaped metal housing that houses a main bus and various electrical devices, etc. With regard to this type of power receiving and transforming facility, for example, Patent Document 1 proposes a technology for monitoring high-voltage electrical devices by installing monitoring devices such as thermal imaging cameras in a high-voltage room where the high-voltage electrical devices are located. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-85868 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional technology described above, since the monitoring equipment is installed inside a high-voltage room, when performing maintenance such as servicing, inspection, or replacement of the monitoring equipment, it is necessary to temporarily stop (power outage) the electricity flowing through the main bus for safety reasons.

[0005] One aspect of the present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a substation facility that allows maintenance of monitoring equipment to be performed without powering down the high-voltage chamber. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, a substation equipment according to one embodiment of the present disclosure comprises a high-voltage chamber that houses electrical equipment that operates at a high voltage, a low-pressure chamber that houses electrical equipment that operates at a low voltage lower than the high voltage, and a shielding plate that separates the high-pressure chamber and the low-pressure chamber, wherein the shielding plate includes a movable plate to which monitoring equipment that monitors the inside of the high-pressure chamber is attached, and the movable plate is capable of moving between a first position in which the monitoring equipment is located inside the high-pressure chamber and a second position in which the monitoring equipment is located inside the low-pressure chamber. [Effects of the Invention]

[0007] According to the above configuration, maintenance of the monitoring equipment can be performed without powering down the high-pressure chamber. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a side end view of the power receiving and transforming equipment according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a front end view of the power receiving and transforming equipment shown in FIG. [Figure 3] 2 is an enlarged cross-sectional view of a shielding plate provided in the power receiving and transforming equipment shown in FIG. 1, showing a state in which the movable plate is in a monitoring position. [Figure 4] 2 is an enlarged cross-sectional view of a shielding plate provided in the power receiving and transforming equipment shown in FIG. 1, showing a state in which the movable plate is in a maintenance position. [Figure 5] 5 is a cross-sectional view showing an example of a configuration in which a protection plate is attached to the shielding plate shown in FIG. 4. FIG. [Figure 6] FIG. 10 is a side view showing a modified example of the movable plate. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the present disclosure will be described below. Note that the following description is an example of a power receiving and transforming facility according to the present disclosure, and the technical scope of the present disclosure is not limited to the illustrated example.

[0010] [Configuration of power receiving and transforming equipment] First, a configuration example of the power receiving and transforming equipment 1 according to this embodiment will be described. Fig. 1 is a right side view of the power receiving and transforming equipment 1, and is an end view when the housing 11 of the power receiving and transforming equipment 1 is cut left and right. Fig. 2 is a front view of the power receiving and transforming equipment 1 shown in Fig. 1, and is an end view when the housing 11 is cut front and back.

[0011] 1 and 2, the power receiving and transforming equipment 1 is a metal-enclosed switchgear in which various devices for receiving high-voltage power are housed in a metal housing 11. In the power receiving and transforming equipment 1, a metal front door 12 is attached to the front of the housing 11, and a metal rear door 13 is attached to the rear of the housing 11. The interior of the housing 11 is closed by closing the front door 12 and the rear door 13.

[0012] A main bus 21 and various electrical devices are provided within this housing 11. A high voltage (e.g., 6.6 kV) is applied to the main bus 21. High-voltage electrical devices such as a transformer 22 are connected to this main bus 21. To prevent electric shock, the space in which the main bus 21 and high-voltage electrical devices are provided is separated by the housing 11, a front shielding plate 17, and a rear shielding plate 18. Hereinafter, the room forming this space will be referred to as the "high-voltage chamber 14."

[0013] Meanwhile, inside the housing 11, outside the high-pressure chamber 14, there is provided control equipment and the like that controls the high-voltage electrical equipment. A low voltage (e.g., 100 V, 200 V, etc.) is applied to electrical equipment such as control equipment that is provided outside the high-pressure chamber 14. Hereinafter, the chamber inside the housing 11 that forms the space outside and in front of the "high-pressure chamber 14" will be referred to as the "front low-pressure chamber 15," and the chamber that forms the space outside and behind the "high-pressure chamber 14" will be referred to as the "rear low-pressure chamber 16."

[0014] The power receiving and transforming equipment 1 has a high-pressure chamber 14, a front low-pressure chamber 15 installed in front of the high-pressure chamber 14, and a rear low-pressure chamber (low-pressure chamber) 16 installed behind the high-pressure chamber 14. The high-pressure chamber 14 and the front low-pressure chamber 15 are separated by a front shielding plate 17. The high-pressure chamber 14 and the rear low-pressure chamber 16 are also separated by a rear shielding plate (shielding plate) 18. As a result, the high-pressure chamber 14, the front low-pressure chamber 15, and the rear low-pressure chamber 16 are each formed independently and separately within the power receiving and transforming equipment 1.

[0015] The front shielding plate 17 and the rear shielding plate 18 are made of metal. By opening the front door 12, an operator can access the front low-pressure chamber 15, which is separated from the high-pressure chamber 14 by the front shielding plate 17. Furthermore, by opening the rear door 13, an operator can access the rear low-pressure chamber 16, which is separated from the high-pressure chamber 14 by the rear shielding plate 18.

[0016] (hypertensive chamber) The high-voltage chamber 14 is mainly provided with a main bus 21 and high-voltage electrical equipment such as a transformer 22 connected to the main bus 21. The main bus 21 is configured, for example, with a three-phase (R, S, T) bus, but the number of phases is not limited to three. The transformer 22 is an electrical device that operates at high voltage, that is, a high-voltage electrical device that can be in a state where a high voltage is applied (a charging state). The main bus 21 and the transformer 22 are electrically connected via a transformer terminal 23.

[0017] Additionally, rear monitoring cameras 24-26 are provided in the high-pressure chamber 14 for monitoring the high-pressure chamber 14. The rear monitoring cameras 24-26 are, for example, infrared cameras, and are installed inside the high-pressure chamber 14 to monitor high-voltage electrical equipment and the like installed in the high-pressure chamber 14. The two-dot chain lines in Fig. 1 extending from the rear monitoring cameras 24-26 illustrate the shooting directions of the rear monitoring cameras 24-26.

[0018] When high voltage is applied to the high-voltage chamber 14, heat is generated. For example, in the case of conductors for electrically connecting the main busbar 21 and high-voltage electrical equipment, and between high-voltage electrical equipment, fastening members (bolts and nuts) that connect the conductors to each other or the conductors to high-voltage electrical equipment are likely to generate heat when high voltage is applied. For this reason, it is necessary to monitor the internal conditions or temperature changes of the high-voltage chamber 14.

[0019] 2, in this embodiment, three rear monitoring cameras 24 to 26 are installed inside the high-pressure chamber 14. The rear monitoring camera 24 monitors the upper space of the high-pressure chamber 14, and the rear monitoring cameras 25 and 26 monitor the lower space of the high-pressure chamber 14 (for example, the transformer terminals 23).

[0020] Each of these rear monitoring cameras 24-26 is attached to the high-pressure chamber 14 side of a movable plate 81 of the rear shielding plate 18. Each movable plate 81 is made of, for example, metal, and can move between a monitoring position (first position) P1 where the rear monitoring cameras 24-26 are located inside the high-pressure chamber 14, and a maintenance position (second position) P2 where the rear monitoring cameras 24-26 are located inside the rear low-pressure chamber 16.

[0021] Therefore, by moving the movable plate 81 from the monitoring position P1 to the maintenance position P2, the rear monitoring cameras 24 to 26 can be moved individually from the high pressure chamber 14 to the rear low pressure chamber 16.

[0022] The rear monitoring cameras 24 to 26 may be used to monitor the state of contamination of the insulating supports that support the above-mentioned conductors while insulating them from the surroundings, light emission due to minute discharges, the temperature of the conductors, etc. The rear monitoring cameras 24 to 26 may also be visible light cameras.

[0023] Furthermore, the positions and number of movable plates 81 provided on the rear shielding plate 18 are not particularly limited and can be changed as appropriate depending on the number of rear monitoring cameras to be installed, etc. The mounting structure of the rear monitoring cameras 24 to 26 on the rear shielding plate 18 will be described in detail later.

[0024] (Front low pressure chamber) The front low-pressure chamber 15 is mainly equipped with control equipment for controlling various electrical devices and monitoring equipment for monitoring the high-pressure chamber 14. The control equipment and monitoring equipment are electrical devices that operate at a low voltage lower than the high voltage.

[0025] For example, the front low-pressure chamber 15 is provided with an operating device 31 and front monitoring cameras 32 and 33. The two-dot chain lines in FIG. 1 extending from the front monitoring cameras 32 and 33 illustrate the shooting directions of the front monitoring cameras 32 and 33.

[0026] The operating device 31 is used by an operator to switch between electrical connection and disconnection with the high-voltage electrical equipment provided in the high-pressure chamber 14. The operator operates a lever provided on the operating device 31 to switch between connection and disconnection.

[0027] Front monitoring cameras 32 and 33 are attached to the inside of the front door 12. The front monitoring cameras 32 and 33 are, for example, infrared cameras, and monitor the high-pressure chamber 14 from the front low-pressure chamber 15. A square hole 70A is formed in the front shielding plate 17 in the area facing the front monitoring cameras 32 and 33, penetrating through the plate in the thickness direction. This square hole 70A is closed by an infrared-transmitting plate 71 made of resin that transmits infrared rays. The front monitoring cameras 32 and 33 may also be visible light cameras.

[0028] (rear low pressure chamber) The rear low-pressure chamber 16 is equipped with electrical equipment that operates on a low voltage lower than the high voltage. When an operator performs maintenance, inspection, replacement, or other such maintenance on the rear monitoring cameras 24-26, the operator moves the movable plate 81 from the monitoring position P1 to the maintenance position P2, thereby moving the rear monitoring cameras 24-26 from the high-pressure chamber 14 to the rear low-pressure chamber 16. This allows the operator to perform maintenance on the rear monitoring cameras 24-26 in the rear low-pressure chamber 16.

[0029] [Configuration of rear shielding plate] Next, we will explain an example configuration of the rear shielding plate 18. Figures 3 and 4 are enlarged cross-sectional views of the rear shielding plate 18 around the rear monitoring camera 24 shown in Figure 1, with Figure 3 showing the movable plate 81 in the monitoring position P1 and Figure 4 showing the movable plate 81 in the maintenance position P2.

[0030] The mounting structure of the rear monitoring cameras 24 to 26 relative to the rear shielding plate 18 is the same for all of them. Therefore, the following will describe the mounting structure of the rear monitoring camera 24 relative to the rear shielding plate 18, and will omit a description of the mounting structure of the rear monitoring cameras 25 and 26.

[0031] As shown in Figures 3 and 4, the rear shielding plate 18 includes a shielding plate main body 80 having a rectangular opening 80A formed through it in the plate thickness direction, and a movable plate 81 to which the rear monitoring camera 24 is attached.

[0032] The movable plate 81 is pivotally supported by the shielding plate main body 80. Specifically, the movable plate 81 is pivotally supported by the shielding plate main body 80 via a hinge 82 provided at the lower edge of the opening 80A. The hinge 82 has a rotation shaft 82A and is provided on the rear low-pressure chamber 16 side of the rear shielding plate 18. Therefore, the movable plate 81 is tiltable toward the rear low-pressure chamber 16 around the rotation shaft 82A. As a result, by tilting the movable plate 81 toward the rear low-pressure chamber 16 around the rotation shaft 82A, the rear monitoring camera 24 can be moved from the high-pressure chamber 14 to the rear low-pressure chamber 16.

[0033] Therefore, maintenance of the rear monitoring camera 24 can be performed in the low pressure chamber without powering down the high pressure chamber 14. In the illustrated example, the movable plate 81 is pivotally supported on the lower side of the opening 80A, but it may also be pivotally supported on the left or right side of the opening 80A, for example.

[0034] This movable plate 81 is configured to close the opening 80A when it is in monitoring position P1 (see FIG. 3). The dimensions of the movable plate 81 are set, for example, to be larger than the dimensions of the opening 80A, and when the movable plate 81 is in monitoring position P1, that is, when the rear monitoring camera 24 is located inside the high-pressure chamber 14, the opening 80A is closed by the movable plate 81 from the rear low-pressure chamber 16 side. Therefore, the safety of the rear low-pressure chamber 16 can be ensured when the movable plate 81 is in monitoring position P1.

[0035] On the other hand, when the movable plate 81 is in the maintenance position P2, the opening 80A is open (see FIG. 4). For this reason, the power receiving and transforming equipment 1 may further include a protective plate 83 that closes the opening 80A when the movable plate 81 is in the maintenance position P2.

[0036] Fig. 5 is a side view showing an example of a configuration in which a protective plate 83 is attached to the rear shielding plate 18 shown in Fig. 4. As shown in Fig. 5, when the movable plate 81 is in the maintenance position P2, the protective plate 83 is fitted into the opening 80A, thereby closing the opening 80A. This improves safety when performing maintenance work on the rear monitoring camera 24 in the rear low-pressure chamber 16.

[0037] The protective plate 83 may be provided slidably near the opening 80A of the shielding plate main body 80. This allows, for example, the protective plate 83 to slide when the movable plate 81 is at the maintenance position P2, thereby closing the opening 80A. In this case, the protective plate 83 may be configured to move in conjunction with the rotation of the movable plate 81. This allows the protective plate 83 to slide in conjunction with the movement of the movable plate 81 from the monitoring position P1 to the maintenance position P2, thereby closing the opening 80A.

[0038] [Effects of power receiving and transforming facilities] As described above, the power receiving and transforming equipment 1 according to this embodiment includes a high-voltage chamber 14 that houses electrical equipment that operates at a high voltage, a rear low-pressure chamber 16 that houses electrical equipment that operates at a low voltage lower than the high voltage, and a rear shielding plate 18 that separates the high-voltage chamber 14 from the rear low-pressure chamber 16. The rear shielding plate 18 includes a movable plate 81 to which rear monitoring cameras 24-26 that monitor the inside of the high-voltage chamber 14 are attached. The movable plate 81 is capable of moving between a monitoring position P1, where the rear monitoring cameras 24-26 are located inside the high-voltage chamber 14, and a maintenance position P2, where the rear monitoring cameras 24-26 are located inside the rear low-pressure chamber 16.

[0039] According to the power receiving and transforming equipment 1, the rear monitoring cameras 24-26 can be individually moved from the high-pressure chamber 14 to the rear low-pressure chamber 16 by moving the movable plate 81 from the monitoring position P1 to the maintenance position P2. Therefore, maintenance of the rear monitoring cameras 24-26 can be performed in the rear low-pressure chamber 16 without cutting off a power outage in the high-pressure chamber 14.

[0040] Furthermore, in the power receiving and transforming equipment 1, when the movable plate 81 is at monitoring position P1, the rear monitoring cameras 24-26 are located inside the high-voltage chamber 14. Therefore, there is no need to provide a window portion in the rear shielding plate 18, in which the rectangular hole 70A is blocked by a resin infrared-transmitting plate 71, as exemplified for the front shielding plate 17. Generally, the infrared-transmitting plate 71 is thin and easily damaged, and providing such a window portion poses risks in terms of safety or visibility. The power receiving and transforming equipment 1 can avoid the aforementioned risks. Furthermore, the power receiving and transforming equipment 1 eliminates the need for the rear monitoring cameras 24-26 to be positioned via the rectangular hole 70A, reducing the installation burden of the rear monitoring cameras 24-26.

[0041] [Modification] In the above-described embodiment, a configuration example has been described in which the movable plate 81 can move between the monitoring position P1 and the maintenance position P2 by tilting toward the rear low-pressure chamber 16 relative to the shielding plate main body 80. However, the movable plate 81 is not limited to the above-described configuration example as long as it is movable between the monitoring position P1 and the maintenance position P2.

[0042] Fig. 6 is a side view showing a movable plate 81A which is a modified example of the movable plate 81. As shown in Fig. 6, the movable plate 81A may be rotatably supported within the opening 80A by a rotation shaft 82A arranged along a center line that bisects the movable plate 81. This allows the movable plate 81A to rotate around the rotation shaft 82A within the opening 80A.

[0043] In this modification, the dimensions of the movable plate 81A and the dimensions of the opening 80A are approximately the same, and the movable plate 81A, which is in the monitoring position P1, is switched to the maintenance position P2 by rotating 180 degrees about the rotation axis 82A. Therefore, the opening 80A is closed by the movable plate 81A in both the monitoring position P1 and the maintenance position P2. Therefore, according to this modification, there is no need to close the opening 80A with the protective plate 83 when the movable plate 81A is in the maintenance position P2, and the protective plate 83 can be omitted.

[0044] In this modified example, the rear shielding plate 18 may be provided with a mechanism for retaining the movable plate 81A at the monitoring position P1 or the maintenance position P2. This prevents the movable plate 81A from unintentionally rotating from the monitoring position P1 or the maintenance position P2. This mechanism may be, for example, a mechanism for locking the movable plate 81A at the monitoring position P1 or the maintenance position P2, or may be a mechanism using a magnet.

[0045] In the above-described embodiment, a configuration example has been described in which the rear shielding plate 18 separating the high-pressure chamber 14 and the rear low-pressure chamber 16 is provided with a movable plate 81. However, the front shielding plate 17 separating the high-pressure chamber 14 and the front low-pressure chamber 15 may also be configured with a movable plate 81. In this case, it is sufficient that each movable plate 81 to which the front monitoring cameras 32 and 33 are attached can move between a monitoring position P1, where the front monitoring cameras 32 and 33 are located within the high-pressure chamber 14, and a maintenance position P2, where the front monitoring cameras 32 and 33 are located within the front low-pressure chamber 15. In this way, by moving the movable plate 81 from the monitoring position P1 to the maintenance position P2, the front monitoring cameras 32 and 33 can be moved individually from the high-pressure chamber 14 to the front low-pressure chamber 15.

[0046] 〔summary〕 The substation equipment according to aspect 1 of the present disclosure comprises a high-voltage chamber that houses electrical equipment that operates at a high voltage, a low-voltage chamber that houses electrical equipment that operates at a low voltage lower than the high voltage, and a shielding plate that separates the high-voltage chamber from the low-pressure chamber, the shielding plate including a movable plate to which monitoring equipment (rear monitoring cameras 24-26) that monitors the inside of the high-pressure chamber is attached, and the movable plate is capable of moving between a first position (monitoring position P1) in which the monitoring equipment is located inside the high-pressure chamber and a second position (maintenance position P2) in which the monitoring equipment is located inside the low-pressure chamber.

[0047] According to the above configuration, the monitoring device can be moved from the high-pressure chamber to the low-pressure chamber by moving the movable plate from the first position to the second position, which allows maintenance of the monitoring device to be performed in the low-pressure chamber without powering down the high-pressure chamber.

[0048] In the substation equipment according to aspect 2 of the present disclosure, in the above-mentioned aspect 1, the shielding plate may further include a shielding plate main body having an opening formed therethrough in the plate thickness direction, and the movable plate may block the opening when in the first position.

[0049] According to the above configuration, when the movable plate is in the first position, i.e., when the monitoring device is located inside the high-pressure chamber, the opening of the shielding plate body is blocked by the movable plate, thereby ensuring the safety of the low-pressure chamber.

[0050] The power receiving and transforming equipment according to a third aspect of the present disclosure is the same as the second aspect, wherein the movable plate is pivotally supported by the shielding plate body.

[0051] According to the above configuration, the monitoring device can be moved into the low-pressure chamber by rotating (turning) the movable plate around the rotation axis.

[0052] The power receiving and transforming equipment according to a fourth aspect of the present disclosure may be configured as in the third aspect, wherein the movable plate is tiltable toward the low-pressure chamber relative to the shielding plate body.

[0053] According to the above configuration, the monitoring device can be moved into the low-pressure chamber by tilting the movable plate toward the low-pressure chamber.

[0054] The substation equipment according to aspect 5 of the present disclosure may, in aspects 2 to 4, further include a protective plate in which the movable plate opens the opening in the second position and closes the opening when the movable plate is in the second position.

[0055] According to the above configuration, the opening is closed by the protective plate when the movable plate is in the second position, thereby improving safety during maintenance work on the monitoring device.

[0056] The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in the embodiments are also included in the technical scope of the present disclosure. Furthermore, new technical features can be formed by combining the technical means disclosed in the embodiments. [Explanation of symbols]

[0057] 1. Power receiving and transforming equipment 14 Hyperbaric Chamber 16 Rear low pressure chamber (low pressure chamber) 18 Rear shielding plate (shielding plate) 24 Rear surveillance camera (surveillance equipment) 25 Rear surveillance camera (surveillance equipment) 26 Rear surveillance camera (surveillance equipment) 80 Shielding plate body 80A opening 81,81A Movable plate 82A Rotating shaft 83 Protection plate P1 Monitoring position (1st position) P2 Maintenance position (second position)

Claims

1. a high-voltage chamber housing electrical equipment operating at high voltage; a low-pressure chamber that accommodates electrical equipment that operates at a low voltage lower than the high voltage; a shielding plate separating the high-pressure chamber and the low-pressure chamber, the shielding plate includes a movable plate to which a monitoring device for monitoring the inside of the high-pressure chamber is attached, The movable plate is movable between a first position where the monitoring device is located in the high-voltage chamber and a second position where the monitoring device is located in the low-voltage chamber.

2. The shielding plate further includes a shielding plate body having an opening formed therethrough in a plate thickness direction, The electric power receiving and transforming facility according to claim 1 , wherein the movable plate closes the opening when in the first position.

3. The electric power receiving and transforming facility according to claim 2 , wherein the movable plate is pivotally supported by the shielding plate body.

4. The power receiving and transforming facility according to claim 3 , wherein the movable plate is tiltable toward the low-pressure chamber relative to the shielding plate body.

5. the movable plate opens the opening at the second position; The electric power receiving and transforming facility according to claim 2 , further comprising a protective plate that closes the opening when the movable plate is in the second position.

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