Substation emergency power supply safety protection device and substation

Abstract

The present invention provides a substation emergency power supply safety protection device and a substation, which are used in conjunction with an isolation bar, wherein the safety protection device comprises an anti-misoperation insulating block, which is movably arranged at a power connector of the emergency power supply, and the anti-misoperation insulating block moves synchronously with the isolation bar, so that the anti-misoperation insulating block leaves the power connector when the isolation bar is pulled out, and the anti-misoperation insulating block blocks the power connector when the isolation bar is inserted. When the safety protection device is used in conjunction with the substation, misoperation of not pulling out the isolation bar will not occur when using the power connector of the emergency power supply, maintenance personnel are not easily electrocuted during maintenance or overhaul, and the maintenance or overhaul operation process is safe and reliable, which greatly reduces the accident rate.

Description

Technical Field

[0001] The present invention relates to the field of electric power equipment, and in particular to a substation emergency power supply safety protection device and a substation. Background Art

[0002] Box-type substation, also known as prefabricated substation or prefabricated substation, is a factory-prefabricated indoor and outdoor compact distribution equipment that integrates high-voltage switchgear, distribution transformers and low-voltage distribution devices according to a certain wiring scheme. It organically combines the functions of transformer step-down and low-voltage distribution, and is installed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft, heat-insulating, fully enclosed, movable steel structure box. It is particularly suitable for urban network construction and transformation, and is a new type of substation that has emerged after the civil substation.

[0003] The high-voltage cabinet or transformer needs to be inspected or repaired when it is damaged. During the inspection or repair process, the current cannot be transmitted through the high-voltage cabinet or transformer. At this time, the power is transmitted through the power connector of the emergency power supply installed in the low-voltage cabinet. The electrical equipment to be used can be electrically connected to the power connector of the emergency power supply. In the process of repairing the high-voltage cabinet or transformer, in order to prevent the power of the emergency power supply from being transmitted to the high-voltage cabinet or transformer, the emergency power supply and the transformer need to be disconnected. In actual operation, the isolation bar in the low-voltage cabinet needs to be unplugged.

[0004] The inventors found in their research that conventional substations have at least the following disadvantages during maintenance:

[0005] During the maintenance process, if the isolation bar is not pulled out due to misoperation, the maintenance personnel will be in a state of live operation, and there is a risk of being electrocuted. At present, the practices of emergency power supply manufacturers are in compliance with the regulations, but there are still potential dangers in safe operation. Therefore, there is an urgent need for a maintenance method or maintenance protection structure that reduces misoperation and increases the safety of maintenance personnel. Summary of the invention

[0006] The purpose of the present invention is to provide a substation emergency power supply safety protection device to improve the problem that in traditional substations, due to misoperation during maintenance, the isolation bar is not pulled out, which will cause the maintenance personnel to be in a live working state and there is a risk of being electrocuted.

[0007] The object of the present invention is to provide a substation to improve the problem that in a traditional substation, due to misoperation during maintenance, the isolation bar is not pulled out, which causes the maintenance personnel to be in a live working state and there is a risk of being electrocuted.

[0008] The embodiment of the present invention is achieved as follows:

[0009] Based on the above-mentioned first purpose, the present invention provides a substation emergency power supply safety protection device for use in conjunction with an isolation bar, the safety protection device includes an anti-misoperation insulating blocker, the anti-misoperation insulating blocker is movably arranged at the power connector of the emergency power supply, and the anti-misoperation insulating blocker moves synchronously with the isolation bar, so that the anti-misoperation insulating blocker leaves the power connector when the isolation bar is pulled out, and the anti-misoperation insulating blocker covers the power connector when the isolation bar is inserted.

[0010] In a preferred embodiment of the present invention, the anti-misoperation insulating barrier has a shielding surface, and the shielding surface can shield the power connector.

[0011] In a preferred embodiment of the present invention, the shielding surface is a plane, and the shielding surface can shield the end surface of the power connector.

[0012] In a preferred embodiment of the present invention, the shielding surface is an annular surface, and the shielding surface is located inside the power connector.

[0013] In a preferred embodiment of the present invention, the insulating barrier to prevent misoperation includes a shielding plate and a shielding column, the shielding plate is installed on the isolation row, the shielding column is installed on the shielding plate, the outer peripheral surface of the shielding column is set as the shielding surface, and the shielding column can be plugged into the power connector.

[0014] In a preferred embodiment of the present invention, the shielding column has a front end surface facing away from the shielding plate, and a chamfer is arranged between the front end surface and the shielding surface.

[0015] In a preferred embodiment of the present invention, an insulating barrier is further included, wherein the insulating barrier is used to be detachably connected to the box shell of the transformer box, and the insulating barrier is provided with a through hole for the power line to pass through.

[0016] In a preferred embodiment of the present invention, when the insulating barrier is installed on the housing, the through hole is coaxially arranged with the power connector.

[0017] In a preferred embodiment of the present invention, the insulating barrier is fixedly connected to the box shell by bolts.

[0018] Based on the above second purpose, the present invention provides a substation, including the substation emergency power supply safety protection device.

[0019] The beneficial effects of the embodiments of the present invention are:

[0020] In summary, the embodiment of the present invention provides a substation emergency power supply safety protection device, which has a simple and reasonable structure, is easy to manufacture and process, and is easy to install and use. At the same time, when the safety protection device is used in conjunction with the substation, there will be no erroneous operation of not unplugging the isolation bar when using the power connector of the emergency power supply, and maintenance personnel are not prone to electric shock during maintenance or overhaul. The maintenance or overhaul operation process is safe and reliable, which greatly reduces the accident rate. The details are as follows:

[0021] The substation emergency power supply safety protection device provided in this embodiment installs the anti-misoperation insulating block on the isolation bar. When the emergency power supply is not in use, the anti-misoperation insulating block blocks the power connector of the emergency power supply, and the power connector of the emergency power supply is not directly exposed to the staff's field of vision, so that the staff cannot directly use the power connector. When the high-voltage cabinet or transformer needs to be repaired or overhauled, the emergency power supply needs to be used. Since the power connector of the emergency power supply is blocked, the operator cannot directly plug the plug into the power connector. During actual operation, the operator needs to separate the anti-misoperation insulating block from the power connector to expose the power connector. Since the anti-misoperation insulating block moves synchronously with the isolation bar, the isolation bar must be operated when removing the anti-misoperation insulating block, so the operator must unplug the isolation bar from the transformer box. In this way, the line between the emergency power supply and the transformer and the high-voltage cabinet is broken. When maintenance personnel are repairing the high-voltage cabinet or transformer, the emergency power supply will not flow back into the high-voltage cabinet or transformer. Maintenance personnel work in a safe environment and are not prone to electric shock, which reduces the accident rate and strongly protects the life safety of maintenance personnel.

[0022] The substation provided in this embodiment includes the above-mentioned substation emergency power supply safety protection device and has all the advantages of the substation emergency power supply safety protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of an application of a substation emergency power supply safety protection device and a substation according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a substation emergency power supply safety protection device and an anti-misoperation insulating barrier of a substation according to an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the deformation structure of the substation emergency power supply safety protection device and the anti-misoperation insulating stopper of the substation according to the embodiment of the present invention;

[0027] Figure 4 FIG. 4 is a schematic diagram of an insulating barrier according to an embodiment of the present invention.

[0028] Icons: 001 - isolation bar; 002 - box shell; 003 - conductive bar; 100 - insulating barrier to prevent misoperation; 110 - baffle; 120 - shielding plate; 130 - shielding column; 140 - shielding surface; 200 - power connector; 300 - insulating barrier; 310 - through hole. DETAILED DESCRIPTION

[0029] During the maintenance process, if the isolation bar is not pulled out due to misoperation, the maintenance personnel will be in a state of live operation, and there is a risk of being electrocuted. At present, the practices of emergency power supply manufacturers are in compliance with the regulations, but there are still potential dangers in safe operation. Therefore, there is an urgent need for a maintenance method or maintenance protection structure that reduces misoperation and increases the safety of maintenance personnel.

[0030] In view of this, the inventor has designed a substation emergency power supply safety protection device and a substation. By using the safety protection device in conjunction with the substation, there will be no erroneous operation of not unplugging the isolation bar when using the power connector of the emergency power supply. Maintenance personnel are not prone to electric shock during maintenance or inspection. The maintenance or inspection operation process is safe and reliable, greatly reducing the accident rate.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0037] Example

[0038] The present embodiment provides a substation emergency power supply safety protection device, which is used in conjunction with a low-voltage transformer cabinet and is installed in the low-voltage transformer cabinet. It can isolate the emergency power supply in the low-voltage transformer cabinet and prevent the current of the emergency power supply from flowing back into the high-voltage transformer cabinet and the transformer, thereby effectively ensuring the safety of the personnel who repair or inspect the high-voltage transformer cabinet and the transformer.

[0039] See also Figure 1 The substation emergency power supply safety protection device provided in this embodiment is used in conjunction with the isolation bar 001 in the low-voltage substation cabinet. The safety protection device includes an anti-misoperation insulating block 100, which is movably arranged at the power connector 200 of the emergency power supply, and the anti-misoperation insulating block 100 moves synchronously with the isolation bar 001, so that the anti-misoperation insulating block 100 leaves the power connector 200 when the isolation bar 001 is pulled out, and the anti-misoperation insulating block 100 covers the power connector 200 when the isolation bar 001 is inserted.

[0040] The substation emergency power supply safety protection device provided in this embodiment installs the anti-misoperation insulating block 100 on the isolation bar 001. When the emergency power supply is not in use, the anti-misoperation insulating block 100 is shielded at the power connector 200 of the emergency power supply, and the power connector 200 of the emergency power supply is not directly exposed to the staff's field of vision, so that the staff cannot directly use the power connector 200. When the high-voltage cabinet or transformer needs to be repaired or overhauled, the emergency power supply needs to be used. Since the power connector 200 of the emergency power supply is blocked, the operator cannot directly plug the plug into the power connector 200. During actual operation, the operator needs to separate the anti-misoperation insulating blocker 100 from the power connector 200 to expose the power connector 200. Since the anti-misoperation insulating blocker 100 moves synchronously with the isolation bar 001, it is necessary to operate the isolation bar 001 when removing the anti-misoperation insulating blocker 100, so the operator must unplug the isolation bar 001 from the transformer box. In this way, the line between the emergency power supply and the transformer and the high-voltage cabinet is broken. When maintenance personnel are repairing the high-voltage cabinet or transformer, the emergency power supply will not flow back into the high-voltage cabinet or transformer. Maintenance personnel work in a safe environment and are not prone to electric shock, which reduces the accident rate and strongly protects the life safety of maintenance personnel.

[0041] In this embodiment, it should be noted that during the power transmission process, the current passes through the high-voltage transformer cabinet, then flows into the transformer, and after being transformed by the transformer, flows into the low-voltage transformer cabinet, and then is output by the low-voltage transformer cabinet to the power user. The power supply connector 200 of the emergency power supply is installed on the power output side of the low-voltage transformer cabinet. At the same time, an isolation bar 001 is provided on the current input side of the low-voltage transformer cabinet, that is, on the line where the low-voltage transformer cabinet and the transformer are electrically connected. The isolation bar 001 plays a role in controlling the on-off of the line. When the isolation bar 001 is pulled out from the conductive bar 003 on the low-voltage transformer cabinet, the line between the high-voltage transformer cabinet-transformer-low-voltage transformer cabinet is disconnected. When the isolation bar 001 is inserted into the conductive bar 003, the line between the high-voltage transformer cabinet-transformer-low-voltage transformer cabinet is conductive. Therefore, when using emergency power supply while inspecting or repairing high-voltage substations and transformers, in order to ensure the safety of operators, it is necessary to unplug isolation bar 001 from conductive bar 003 to prevent the current flowing from the emergency power supply from flowing back to the transformer and high-voltage substation and causing electric shock accidents.

[0042] In traditional operations, operators may make mistakes or be negligent and use the emergency power supply without unplugging the isolation bar 001. In this way, operators who are inspecting or repairing transformers and high-voltage transformer cabinets are prone to electric shock, posing a major safety hazard.

[0043] Therefore, this embodiment provides a substation emergency power supply safety protection device. Through the structural design of the insulating barrier 100 to prevent misoperation, it is used in conjunction with the isolation bar 001 to ensure that the isolation bar 001 must be unplugged when using the emergency power supply. There will be no misoperation or failure to unplug the isolation bar 001 due to negligence, thereby greatly improving safety.

[0044] See also Figure 2 In this embodiment, the anti-misoperation insulating baffle 100 can be a baffle 110, which can be a rectangular plate. One surface of the baffle 110 is a plane, and at least part of the surface of the baffle 110 is a shielding surface 140. The baffle 110 is fixed on the isolation plate, and the baffle 110 moves synchronously with the isolation plate. The shielding surface 140 faces the power connector 200 of the emergency power supply. When the isolation bar 001 is plugged into the conductive bar 003, the shielding surface 140 of the baffle 110 contacts the port of the power connector 200, and the port of the power connector 200 is sealed.

[0045] See also Figure 3 In other embodiments, the anti-misoperation insulating barrier 100 includes a shielding plate 120 and a shielding column 130. The shielding plate 120 may be a rectangular plate, and the shielding column 130 may be a cylinder. One end of the shielding column 130 is mounted on the shielding plate 120. The shielding column 130 may be arranged perpendicular to the shielding plate 120. The outer circumferential surface of the shielding column 130 is at least partially arranged as a shielding surface 140, that is, the shielding surface 140 is an annular surface. When in use, the shielding plate 120 is mounted on the isolation bar 001. When the isolation bar 001 is inserted into the conductive bar 003, the shielding column 130 is plugged into the power connector 200, and the shielding column 130 shields the power connector 200.

[0046] Furthermore, the end of the shielding column 130 away from the shielding plate 120 is provided with a chamfer. The chamfer may be a rounded corner or a chamfered corner. Specifically, the shielding column 130 has a circular front end face away from the shielding plate 120, and a chamfer is provided between the front end face and the shielding surface 140. Through the chamfered structural design, when the isolation row 001 is plugged into the conductive row 003, the shielding column 130 is easy to insert into the power connector 200.

[0047] It should be noted that the shielding column 130 and the shielding plate 120 can be fixedly connected by bonding, screwing or clamping. The shielding plate 120 and the isolation row 001 can be connected by bolts or rivets.

[0048] See also Figure 1 and Figure 4In this embodiment, the substation emergency power supply safety protection device optionally further includes an insulating barrier 300. The insulating barrier 300 cooperates with the box shell 002 of the transformer box. When in use, the insulating barrier 300 is detachably connected to the box shell 002 of the transformer box. The insulating barrier 300 is provided with a through hole 310 for the power line to pass through. Further, the through hole 310 can be a cylindrical hole, and after the insulating barrier 300 is installed on the box shell 002, the through hole 310 is coaxially arranged with the power connector 200. By providing the insulating barrier 300, the safety is further improved. When the emergency power supply is needed, the insulating barrier 300 is first opened, and then the isolation bar 001 is pulled out, and at the same time, the anti-misoperation insulating barrier is moved away from the power connector 200 so that the power connector 200 is exposed to the operator's field of vision, and then the insulating barrier 300 is installed on the box shell 002, and the plug is inserted into the power connector 200 from the through hole 310, and the emergency power supply supplies power to the waiting electrical equipment. When the emergency power supply is not needed, the insulating barrier 300 is removed, and then the plug is pulled out, and the isolation bar 001 is inserted into the conductive bar 003.

[0049] It should be noted that the insulating barrier 300 may be a barrier plate. The insulating barrier 300 and the box shell 002 may be connected by bolts or by snaps.

[0050] Example

[0051] This embodiment provides a substation, including the substation emergency power supply safety protection device mentioned in the above embodiment.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A substation emergency power supply safety protection device, used in conjunction with an isolation bar, characterized in that: The safety protection device comprises an anti-misoperation insulating block, which is installed on the isolation bar, and is movably arranged at the power connector of the emergency power supply, and the anti-misoperation insulating block moves synchronously with the isolation bar, so that when the isolation bar is pulled out, the anti-misoperation insulating block leaves the power connector, and when the isolation bar is inserted, the anti-misoperation insulating block covers the power connector; During the power transmission process, the current passes through the high-voltage transformer cabinet and then flows into the transformer. After being transformed by the transformer, the current flows into the low-voltage transformer cabinet, and then is output by the low-voltage transformer cabinet to the electricity user; a power connector for the emergency power supply is installed on the power output side of the low-voltage transformer cabinet, and at the same time, an isolation bar is provided on the current input side of the low-voltage transformer cabinet, and the isolation bar plays a role in controlling the on-off of the line; when the emergency power supply is used while inspecting or repairing the high-voltage transformer cabinet and the transformer, in order to ensure the safety of the operator, the isolation bar needs to be pulled out from the conductive bar; the anti-misoperation insulating block is used in conjunction with the isolation bar to ensure that the isolation bar must be pulled out when using the emergency power supply.

2. The substation emergency power supply safety protection device according to claim 1 is characterized in that: The misoperation prevention insulating blocking member has a shielding surface, and the shielding surface can shield the power connector.

3. The substation emergency power supply safety protection device according to claim 2 is characterized in that: The shielding surface is a plane, and the shielding surface can shield the end surface of the power connector.

4. The substation emergency power supply safety protection device according to claim 2 is characterized in that: The shielding surface is an annular surface, and the shielding surface is located inside the power connector.

5. The substation emergency power supply safety protection device according to claim 4 is characterized in that: The anti-misoperation insulating barrier includes a shielding plate and a shielding column, the shielding plate is installed on the isolation row, the shielding column is installed on the shielding plate, the outer peripheral surface of the shielding column is set as the shielding surface, and the shielding column can be plugged into the power connector.

6. The substation emergency power supply safety protection device according to claim 5, characterized in that: The shielding column has a front end surface facing away from the shielding plate, and a chamfer is arranged between the front end surface and the shielding surface.

7. The substation emergency power supply safety protection device according to claim 1, characterized in that: It also includes an insulating barrier, which is used to be detachably connected to the box shell of the transformer box, and is provided with a through hole for the power line to pass through.

8. The substation emergency power supply safety protection device according to claim 7, characterized in that: When the insulating barrier is mounted on the box shell, the through hole is coaxially arranged with the power connector.

9. The substation emergency power supply safety protection device according to claim 7, characterized in that: The insulating barrier is fixedly connected to the box shell by bolts.

10. A substation, characterized in that: It comprises a substation emergency power supply safety protection device according to any one of claims 1-9.

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