A miniaturized mobile box-type substation

Abstract

This invention relates to a miniaturized mobile prefabricated substation, belonging to the field of electrical equipment technology. It includes: an enclosed handcart compartment, a vacuum load switch-fuse combination handcart, a dry-type transformer, a metering compartment, a circuit breaker compartment, a transformer compartment, a cable outlet compartment, an upper inlet compartment, a lower inlet compartment, a fully insulated and shielded plug, metering instruments, a frame circuit breaker, a molded case circuit breaker, a capacitor compartment, an intelligent integrated capacitor, and an emergency power plug. This invention provides a miniaturized substation that adapts to more working environments, shortens on-site power outage time, and combines a vacuum interrupter with a current-limiting fuse. It changes the traditional prefabricated substation's high-voltage side from a switchgear configuration to a dual-power supply configuration on the low-voltage side, ensuring reliability. Specifically, it is equipped with an emergency power plug for use with a generator cart, allowing the electrical load to be directly powered by the equipment's transformer. This dual power supply ensures reliable operation of the on-site electrical load, saving valuable time for power personnel to troubleshoot and repair faults.

Description

Technical Field

[0001] The invention belongs to the field of electrical equipment, and in particular relates to a miniaturized mobile box-type transformer substation. Background Art

[0002] In the current field of electrical equipment technology, the application of box-type substations is becoming more and more widespread, but the incidence of electrical failures in box-type substations is also becoming more and more frequent. When a failure occurs, due to the large and bulky size of the box-type substation itself, it is very inconvenient to transport and replace it, and it often takes a certain amount of time for power personnel to check and repair it, which causes power outages in a certain area, especially in some key areas, such as hospitals, banks, industrial and mining enterprises, including in residential areas. Long-term power outages not only affect people's daily lives, but more seriously may involve economic and property losses and even people's lives.

[0003] Therefore, there is an urgent need for a technical solution to the above problems in the prior art. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in response to the above-mentioned problems, a miniaturized mobile box-type substation is provided. When an electrical fault occurs and the on-site power distribution equipment cannot be used, the substation can be promptly and effectively transported to the fault site, thereby shortening the on-site power outage time as much as possible. The substation is also equipped with an emergency power plug for use with a power generation vehicle to replace the damaged power distribution equipment on site. The dual power supply feature ensures the reliable operation of the on-site power load, thereby buying precious time for power personnel to troubleshoot and repair the fault.

[0005] A miniaturized mobile box-type substation, characterized in that it comprises: a substation box;

[0006] The substation box is provided with a 2mm thick aluminum-zinc metal plate, which divides the inside of the substation box into different inner cavities, and the 2mm thick aluminum-zinc metal plate is provided with connecting through holes, and the inner cavity includes: a closed trolley room, a metering room, a circuit breaker room, a transformer room, a cable outlet room, an upper incoming line room, a lower incoming line room and a capacitor room;

[0007] The substation box is also equipped with JZ-10Q insulators and JYZ-05 insulators;

[0008] The substation box base is also provided with a bearing pulley;

[0009] The lower incoming line chamber includes a fully insulated and fully shielded plug, which is plugged into the 236 bushing;

[0010] The upper incoming line chamber includes a wall bushing;

[0011] A vacuum load switch-fuse combination electrical appliance trolley is arranged in the closed trolley room, and an observation window is also arranged on the cabinet door of the closed trolley room;

[0012] The vacuum load switch-fuse combination electrical appliance trolley comprises a vacuum interrupter, a contact arm and a chassis trolley;

[0013] The vacuum interrupter is arranged on a chassis, the chassis is arranged on a track on the bottom surface of a closed trolley room, and a contact arm is arranged on the vacuum interrupter;

[0014] The chassis is equipped with an operating crank, and a mechanical interlock is provided between the chassis and the cabinet door of the closed trolley room to prevent electrical misoperation;

[0015] An upper contact box and a lower contact box are symmetrically arranged on the inner wall of one side of the closed handcart chamber, the number of the upper contact boxes is the same as that of the lower contact boxes, and the upper contact boxes and the lower contact boxes are arranged one by one;

[0016] The upper contact box and the lower contact box are matched with the contact arms one by one, and the number of the contact arms is the sum of the number of the upper contact box and the number of the lower contact box; the contact arms can enter the corresponding upper contact box or the lower contact box when the chassis vehicle moves;

[0017] The upper contact box and the lower contact box are both provided with static contacts;

[0018] A dry-type transformer is arranged in the transformer room;

[0019] The metering chamber is provided with a metering meter;

[0020] A circuit breaker chamber is provided below the metering chamber, and a frame circuit breaker is provided in the circuit breaker chamber;

[0021] The capacitor chamber is in contact with the metering chamber and the circuit breaker chamber, and an intelligent integrated capacitor is arranged inside the capacitor chamber;

[0022] The cable outlet chamber is arranged below the circuit breaker chamber and the capacitor chamber, and a molded case circuit breaker and an emergency power plug are arranged inside the cable outlet chamber;

[0023] The cable outlet chamber is semi-enclosed and open, which is convenient for the molded case circuit breaker and the emergency power plug to be connected to the outside world;

[0024] The metering room, circuit breaker room, upper incoming line room and capacitor room are all provided with cabinet doors on the outer wall of the transformer substation box. The cabinet doors are 2mm thick aluminum-zinc plate cabinet doors and are provided with door locks.

[0025] One end of the dry-type transformer is connected to the lower contact box through a copper busbar, and the upper contact box passes through the wall bushing and the upper incoming line chamber in sequence through the copper busbar I to enter the lower incoming line chamber, the copper busbar I is connected to a fully insulated and fully shielded plug, and the copper busbar I is connected to the inner wall of the transformer substation box through a JZ-10Q insulator;

[0026] The other end of the dry-type transformer passes through the metering room through the copper bus II and enters the circuit breaker room. The copper bus II is connected to the frame circuit breaker. The copper bus II is connected to the inner wall of the transformer substation box through a JYZ-05 insulator.

[0027] The molded case circuit breaker is connected to the output end of the frame circuit breaker, and the molded case circuit breaker is also connected to the emergency power plug.

[0028] The 236 bushing meets the requirements of electrical clearance 125 mm and creepage distance 250 mm.

[0029] The lower incoming line chamber is also provided with a cabinet door, and a door lock is provided on the cabinet door.

[0030] The observation window is a sandwich of explosion-proof glass and shielding net.

[0031] The dry-type transformer is fixed by bolt connection.

[0032] The number of the upper contact boxes and the number of the lower contact boxes are both three, the three upper contact boxes are arranged horizontally with equal intervals, the three lower contact boxes are arranged correspondingly below the three upper contact boxes, and the three lower contact boxes are at the same horizontal height.

[0033] The transformer substation box base is a channel steel base.

[0034] The beneficial effects of the present invention are as follows: the present design provides a miniaturized substation, which is more convenient to transport and has a compact internal layout and small footprint, thus maximizing the timeliness of on-site electricity use; a mobile vacuum load switch-fuse combination electrical trolley is adopted on the high-voltage side, which changes the form of switch cabinet adopted on the high-voltage side of the previous box-type substation, thus saving raw materials and reducing costs, and facilitating on-site maintenance and replacement of equipment; the low-voltage side adopts the characteristics of dual power supply reliability, that is, an emergency power plug is configured for use with a power generation vehicle. When the transformer is not used for power supply, the fuse trolley is pulled out and connected to the emergency power plug of the equipment through the on-site power generation vehicle. Similarly, the on-site power supply is completed through the distribution of the molded case circuit breaker, which is flexible to use and increases the power supply range. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0036] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0037] Figure 3 The structure of the present invention is schematically shown Figure 3 ;

[0038] In the figure: 1-JZ-10Q insulator, 2-vacuum interrupter, 3-contact arm, 4-contact box, 5-JYZ-05 insulator, 6-enclosed trolley room, 7-vacuum load switch-fuse combination electrical trolley, 8-static contact, 9-chassis car, 10-dry-type transformer, 11-bearing pulley, 12-metering room, 13-circuit breaker room, 14-transformer room, 15-cable outlet room, 16-wall bushing , 17-upper incoming line room, 18-236 bushing, 19-lower incoming line room, 20-fully insulated and fully shielded plug, 21-observation window, 22-channel steel base, 23-metering meter, 24-frame circuit breaker, 25-molded case circuit breaker, 26-capacitor room, 27-intelligent integrated capacitor, 28-emergency power plug, 31-copper busbar I, 32-copper busbar II, 41-upper contact box, 42-lower contact box. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0040] A miniaturized mobile box-type substation, characterized in that it comprises: a substation box;

[0041] The substation box is provided with a 2mm thick metal aluminum-zinc plate, which divides the inside of the substation box into different inner cavities, and the 2mm thick metal aluminum-zinc plate is provided with connecting through holes, and the inner cavity includes: a closed trolley room 6, a metering room 12, a circuit breaker room 13, a transformer room 14, a cable outlet room 15, an upper incoming line room 17, a lower incoming line room 19 and a capacitor room 26;

[0042] The substation box is also provided with JZ-10Q insulator 1 and JYZ-05 insulator 5;

[0043] The substation box base is also provided with a bearing pulley 11;

[0044] The lower incoming line chamber 19 includes a fully insulated and fully shielded plug 20, and the fully insulated and fully shielded plug 20 is plugged into the 236 sleeve 18;

[0045] The upper incoming line chamber 17 includes a wall bushing 16;

[0046] The closed trolley room 6 is provided with a vacuum load switch-fuse combination electrical trolley 7, and the cabinet door of the closed trolley room 6 is also provided with an observation window 21;

[0047] The vacuum load switch-fuse combination electrical appliance trolley 7 comprises a vacuum interrupter 2, a contact arm 3 and a chassis trolley 9;

[0048] The vacuum interrupter 2 is arranged on a chassis 9, the chassis 9 is arranged on a track on the bottom surface of a closed trolley room 6, and a contact arm 3 is arranged on the vacuum interrupter 2;

[0049] The chassis 9 is provided with an operating crank, and a mechanical interlock is provided between the chassis 9 and the cabinet door of the closed handcart room 6 to prevent electrical misoperation;

[0050] An upper contact box 41 and a lower contact box 42 are symmetrically arranged on the inner wall of one side of the closed handcart chamber 6. The upper contact boxes 41 and the lower contact boxes 42 are the same in number, and the upper contact boxes 41 and the lower contact boxes 42 are arranged one by one.

[0051] The upper contact box 41 and the lower contact box 42 are matched with the contact arms 3 one by one, and the number of the contact arms 3 is the sum of the number of the upper contact boxes 41 and the number of the lower contact boxes 42; the contact arms 3 can enter the corresponding upper contact box 41 or the lower contact box 42 when the chassis vehicle 9 moves;

[0052] The upper contact box 41 and the lower contact box 42 are both provided with a stationary contact 8;

[0053] A dry-type transformer 10 is arranged in the transformer chamber 14;

[0054] The metering chamber 12 is provided with a metering meter 23;

[0055] A circuit breaker chamber 13 is provided below the metering chamber 12, and a frame circuit breaker 24 is provided in the circuit breaker chamber 13;

[0056] The capacitor chamber 26 is in contact with the metering chamber 12 and the circuit breaker chamber 13, and an intelligent integrated capacitor 27 is arranged inside the capacitor chamber 26;

[0057] The cable outlet chamber 15 is arranged below the circuit breaker chamber 13 and the capacitor chamber 26, and a molded case circuit breaker 25 and an emergency power plug 28 are arranged inside the cable outlet chamber 15;

[0058] The cable outlet chamber 15 is semi-enclosed and open, which is convenient for the molded case circuit breaker 25 and the emergency power plug 28 to be connected to the outside world;

[0059] The metering room 12, the circuit breaker room 13, the upper incoming line room 17 and the capacitor room 26 are all provided with cabinet doors on the outer wall of the transformer substation box. The cabinet doors are 2mm thick metal aluminum-zinc plate cabinet doors and are provided with door locks.

[0060] One end of the dry-type transformer 10 is connected to the lower contact box 42 through a copper busbar, and the upper contact box 41 passes through the wall bushing 16 and the upper incoming line chamber 17 in sequence through the copper busbar I31 to enter the lower incoming line chamber 19, and the copper busbar I31 is connected to the fully insulated and fully shielded plug 20, and the copper busbar I31 is connected to the inner wall of the transformer substation box through the JZ-10Q insulator 1;

[0061] The other end of the dry-type transformer 10 passes through the metering chamber 12 and enters the circuit breaker chamber 13 through the copper bus II32, and the copper bus II32 is connected to the frame circuit breaker 24. The copper bus II32 is connected to the inner wall of the transformer substation box through the JYZ-05 insulator 5;

[0062] The molded case circuit breaker 25 is connected to the output end of the frame circuit breaker 24 , and the molded case circuit breaker 25 is also connected to the emergency power plug 28 .

[0063] The 236 bushing 18 meets the requirements of an electrical clearance of 125 mm and a creepage distance of 250 mm.

[0064] The lower incoming line chamber 19 is also provided with a cabinet door, and a door lock is provided on the cabinet door.

[0065] The observation window 21 is a sandwich of explosion-proof glass and shielding mesh.

[0066] The dry-type transformer 10 is fixed by bolt connection.

[0067] The number of the upper contact boxes 41 and the number of the lower contact boxes 42 are both three. The three upper contact boxes 41 are arranged horizontally at equal intervals. The three lower contact boxes 42 are arranged below the three upper contact boxes 41 accordingly, and the three lower contact boxes 42 are at the same horizontal height.

[0068] The transformer substation box base is a channel steel base 22 .

[0069] The emergency power plug 28 is specially used in conjunction with a power generator truck to supply power, and is plug-and-play, thereby enhancing the diversity and selectivity of on-site load power consumption.

[0070] A door lock is provided on the cabinet door of the lower incoming line room 19 to meet the protection level requirements and prevent accidental entry into the live compartment;

[0071] The vacuum load switch-fuse combination electrical trolley 7 is provided with a test position and a working position. When the vacuum load switch-fuse combination electrical trolley 7 is in the test position, the contact arm 3 is not inserted into the upper contact box 41 and the lower contact box 42, and it can be detected whether the secondary electrical part of the combination electrical trolley 7 is intact. If it is intact, the vacuum load switch-fuse combination electrical trolley 7 can be pushed into the working position. At this time, the contact arm 3 is inserted into the upper contact box 41 and the lower contact box 42, and the equipment is put into operation.

[0072] The dry-type transformer 10 adopts a transformer with small capacity and small volume;

[0073] The outer walls of the substation cabinets of the metering room 12, circuit breaker room 13, upper incoming line room 17 and capacitor room 26 are all made of 2mm thick metal aluminum-zinc material and are equipped with cabinet doors and door locks to meet the protection level requirements. The protection level between rooms reaches IP2XC.

[0074] The cable outlet room 15 space is semi-enclosed and open to meet the access of on-site cables, with a hole opened at the bottom and sealing measures taken.

[0075] The beneficial effects of the present invention are as follows: 1. The miniaturized movable box-type substation has changed the shortcomings of the previous box-type substation, which is large in size and heavy to lift. It is convenient to transport and can be used immediately. The internal layout is compact and occupies a small area, which reduces labor waste, improves work efficiency, and maximizes the timeliness of on-site electricity use; 2. The high-voltage side adopts a mobile vacuum load switch-fuse combination electrical trolley, which organically combines the vacuum arc chamber and the current limiting fuse, changing the form of the switch cabinet used on the high-voltage side of the previous box-type substation, saving raw materials and reducing costs, which not only plays an electrical protection role, but also facilitates on-site equipment maintenance and replacement; 3. The low-voltage side adopts the characteristics of dual power supply reliability, that is, an emergency power plug used in conjunction with a power generation vehicle is configured, and the power load can be directly powered by the transformer of the equipment. When the transformer is not used for power supply, the fuse trolley is pulled out and connected to the emergency power plug of the equipment through the on-site power generation vehicle. The on-site power supply is also completed through the distribution of the molded case circuit breaker. The use is flexible and the power supply range is increased.

[0076] The operation steps of this device are as follows:

[0077] 1. Push the vacuum load switch-fuse combination electrical trolley 7 into the working position of the closed trolley chamber 6 to complete the main and primary connections.

[0078] 2. The vacuum load switch-fuse combination electrical appliance trolley 7 is provided with an energy storage handle, a closing button, and an opening button. The energy storage handle is rotated to store energy in the device first, and the closing or opening operation can be performed after the energy is stored.

[0079] 3. Complete the energy storage, closing or opening operations of the frame circuit breaker 24, the principle of which is the same as that of the vacuum load switch-fuse combination electrical trolley 7.

[0080] 4. A handle is provided on the molded case circuit breaker 25, and the handle is pushed upward to the closing position.

[0081] As described above, the power supply operation steps of this device are completed.

Claims

1. A miniaturized mobile box-type substation, characterized in that: include: Substation cabinet; The transformer substation box is provided with a 2 mm thick aluminum-zinc plate, which divides the inside of the transformer substation box into different inner chambers. The 2 mm thick aluminum-zinc plate is provided with a connecting through hole, and the inner chamber includes: a closed trolley chamber (6), a metering chamber (12), a circuit breaker chamber (13), a transformer chamber (14), a cable outlet chamber (15), an upper incoming chamber (17), a lower incoming chamber (19) and a capacitor chamber (26); The transformer substation box is also provided with a JZ-10Q insulator (1) and a JYZ-05 insulator (5); The transformer substation box base is also provided with a bearing pulley (11); The lower incoming line chamber (19) comprises a fully insulated and fully shielded plug (20), and the fully insulated and fully shielded plug (20) is plugged into the 236 sleeve (18); The upper incoming line chamber (17) comprises a wall bushing (16); A vacuum load switch-fuse combination electrical appliance trolley (7) is arranged in the closed trolley room (6), and an observation window (21) is also arranged on the cabinet door of the closed trolley room (6); The vacuum load switch-fuse combination electrical appliance trolley (7) comprises a vacuum interrupter (2), a contact arm (3) and a chassis trolley (9); The vacuum interrupter (2) is arranged on a chassis (9), the chassis (9) is arranged on a track on the bottom surface of a closed trolley room (6), and a contact arm (3) is arranged on the vacuum interrupter (2); The chassis (9) is provided with an operating crank, and a mechanical interlock is provided between the chassis (9) and the cabinet door of the closed trolley room (6) to prevent electrical misoperation; An upper contact box (41) and a lower contact box (42) are symmetrically arranged on an inner wall of one side of the closed trolley chamber (6), the upper contact boxes (41) and the lower contact boxes (42) are the same in number, and the upper contact boxes (41) and the lower contact boxes (42) are arranged in a one-to-one correspondence; The upper contact box (41) and the lower contact box (42) are matched with the contact arms (3) in a one-to-one correspondence, and the number of the contact arms (3) is the sum of the number of the upper contact boxes (41) and the number of the lower contact boxes (42); the contact arms (3) enter the corresponding upper contact box (41) or lower contact box (42) when the chassis vehicle (9) moves; The upper contact box (41) and the lower contact box (42) are both provided with stationary contacts (8); A dry-type transformer (10) is arranged in the transformer chamber (14); A meter (23) is arranged in the metering chamber (12); A circuit breaker chamber (13) is arranged below the metering chamber (12), and a frame circuit breaker (24) is arranged in the circuit breaker chamber (13); The capacitor chamber (26) is in contact with the metering chamber (12) and the circuit breaker chamber (13), and an intelligent integrated capacitor (27) is arranged inside the capacitor chamber (26); The cable outlet chamber (15) is arranged below the circuit breaker chamber (13) and the capacitor chamber (26), and a molded case circuit breaker (25) and an emergency power plug (28) are arranged inside the cable outlet chamber (15); The cable outlet chamber (15) is a semi-enclosed open type, which is convenient for the molded case circuit breaker (25) and the emergency power plug (28) to be connected to the outside world; The metering room (12), the circuit breaker room (13), the upper incoming line room (17) and the capacitor room (26) are all provided with cabinet doors on the outer wall of the transformer substation box, the cabinet doors are 2mm thick aluminum-zinc coated metal cabinet doors, and the cabinet doors are provided with door locks; One end of the dry-type transformer (10) is connected to a lower contact box (42) via a copper busbar, and the upper contact box (41) passes through a wall bushing (16) and an upper incoming line chamber (17) in sequence through a copper busbar I (31) to enter a lower incoming line chamber (19), the copper busbar I (31) is connected to a fully insulated and fully shielded plug (20), and the copper busbar I (31) is connected to the inner wall of the transformer substation box via a JZ-10Q insulator (1); The other end of the dry-type transformer (10) passes through the metering chamber (12) and enters the circuit breaker chamber (13) through the copper busbar II (32), the copper busbar II (32) is connected to the frame circuit breaker (24), and the copper busbar II (32) is connected to the inner wall of the transformer substation box through the JYZ-05 insulator (5); The molded case circuit breaker (25) is connected to the output end of the frame circuit breaker (24), and the upper end of the molded case circuit breaker (25) is also connected to the emergency power plug (28).

2. According to claim 1, a miniaturized mobile box-type substation is characterized in that: The 236 bushing (18) meets the requirements of an electrical clearance of 125 mm and a creepage distance of 250 mm.

3. According to claim 1, a miniaturized mobile box-type substation is characterized in that: The lower incoming line chamber (19) is also provided with a cabinet door, and a door lock is provided on the cabinet door.

4. According to claim 1, a miniaturized mobile box-type substation is characterized in that: The observation window (21) is a sandwich of explosion-proof glass and shielding net.

5. The miniaturized mobile box-type substation according to claim 1 is characterized in that: The dry-type transformer (10) is fixed by bolt connection.

6. The miniaturized mobile box-type substation according to claim 1 is characterized in that: The number of the upper contact boxes (41) and the number of the lower contact boxes (42) are both three, the three upper contact boxes (41) are arranged horizontally at equal intervals, the three lower contact boxes (42) are arranged correspondingly below the three upper contact boxes (41), and the three lower contact boxes (42) are at the same horizontal height.

7. The miniaturized mobile box-type substation according to claim 1 is characterized in that: The transformer substation box base is a channel steel base (22).

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