CN211530520U - Modular box transformer substation of power distribution device - Google Patents

Modular box transformer substation of power distribution device Download PDF

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Publication number
CN211530520U
CN211530520U CN201921102210.6U CN201921102210U CN211530520U CN 211530520 U CN211530520 U CN 211530520U CN 201921102210 U CN201921102210 U CN 201921102210U CN 211530520 U CN211530520 U CN 211530520U
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China
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bus
switch
cabinet
chamber
branch
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CN201921102210.6U
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Chinese (zh)
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苏颖
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Guangdong Baichang Energy Technology Co ltd
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Guangzhou Yidian Technology Co ltd
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Abstract

The utility model discloses a distribution device's modularization case becomes, including complete set box shell, high-voltage board, low-voltage board and transformer, the high-voltage board adopt following modular structure: the bus, the cable and the load switch in the high-voltage cabinet respectively adopt a standard module structure which is independent into a box to form a switch box, a bus chamber and a cable chamber; the switch box mainly comprises a cube-shaped switch box body, a load switch, a switch mechanism and two groups of input and output bus connectors, wherein the input bus connectors and the output bus connectors form a pair of bus connectors and are positioned on the wall surface of the switch box body adjacent to a bus chamber. The modular box transformer substation of the power distribution device adopts a more reasonable standard modular structure, and can quickly replace a standard high-voltage module in a high-voltage cabinet on site, so that the maintenance time and the urban equipment maintenance cost are greatly reduced.

Description

Modular box transformer substation of power distribution device
Technical Field
The utility model relates to a case becomes, especially relates to a distribution device's modularization case becomes.
Background
The box transformer, called box-type substation or prefabricated substation, is a distribution transformer, high-voltage switch equipment and low-voltage distribution equipment, and is a factory prefabricated indoor and outdoor compact distribution equipment which is integrated according to a certain wiring scheme, i.e. the functions of transformer voltage reduction, low-voltage distribution and the like are organically combined together and installed in a damp-proof, rust-proof, dust-proof, rat-proof, fire-proof, theft-proof, fully-closed and movable steel structure box, so that the box transformer is particularly suitable for urban network construction and transformation. In the prior art, box transformers are divided into several types, such as european box transformers, american box transformers, and domestic box transformers, wherein the domestic box transformers are originally developed from the european box transformers, and the domestic box transformers generally adopt a structure in which each unit is independent from each other, and are respectively provided with a transformer room, a high-voltage switch room/cabinet, and a low-voltage switch room/cabinet, and are connected into a complete power supply system through a wire. With the construction of cities stepping into the urban beauty stage of improving street view and city appearance, landscape type buried box transformers in which box transformers are partially or completely buried underground have been designed and developed, and the contradiction between power grid construction and land resources and between city beautification is solved.
The landscape type underground box transformer substation mainly comprises an underground transformer box body positioned in a pit and a landscape complete box body positioned on the ground surface, wherein the landscape complete box body is positioned above the underground transformer box body, the underground transformer box body comprises an underground shell and an underground transformer positioned in the underground shell, and the underground transformer box body does not occupy the ground surface space and can be immersed in water for operation within a period of time; the landscape complete box body comprises a landscape shell, and a high-voltage power distribution cabinet (short for high-voltage cabinet) and a low-voltage power distribution cabinet (short for low-voltage cabinet) which are positioned in the landscape shell, wherein the high-voltage cabinet and the low-voltage cabinet are arranged in the landscape shell side by side, and gaps are reserved between the high-voltage cabinet and the low-voltage cabinet based on the characteristics of the high-voltage cabinet. The high-voltage cabinet generally comprises a load switch or a circuit breaker and a mechanism, a bus and a terminal; the low-voltage cabinet generally comprises a main switch cabinet body, a metering cabinet body, a branch switch cabinet body and a compensation cabinet body.
The existing box transformer substation is high-voltage equipment and low-voltage equipment which are designed and configured in advance according to the initial power utilization planning of a building area. The high-voltage cabinet of the existing domestic box-type substation shown in fig. 1 adopts a structure that a plurality of high-voltage boxes 1 with independent switch functions are arranged side by side, each high-voltage box 1 is composed of a set of load switches and a box body 11, each set of load switches is formed by a high-voltage switch 2 or a breaker and a matched switch mechanism thereof, a pair of buses 3 and corresponding three-phase terminals 4, the high-voltage boxes in the high-voltage cabinet are integrated together, the number of the high-voltage boxes in the high-voltage cabinet is determined according to the requirement of an initial power utilization plan for incoming and outgoing line branches, a plurality of high-voltage boxes are generally placed side by side in the high-voltage cabinet and fixed together in the horizontal direction, the plurality of high-voltage boxes 1 are electrically connected with each other through cable interfaces 3 and cables, and after the high-voltage cables are connected to the three-phase terminals 4, the three. Each high-pressure tank 1 is a sealed space filled with an insulating gas.
Besides the main switch cabinet body and the metering cabinet body, the branch switch of the existing low-voltage cabinet body is provided with a plurality of standby switches so as to be convenient for temporary adjustment, and meanwhile, the compensation cabinet body is also arranged according to the compensation design scheme of the initial prediction circuit and adopts a general compensation coefficient. Then the cabinets are combined into a low-voltage cabinet to realize basic functions.
The existing domestic box transformer substation has the following problems:
1. the high-voltage switch equipment, namely the high-voltage cabinet, belongs to the key equipment of the box transformer substation, in the working process, the load is large, technicians have electric shock risks in the process of operating the high-voltage switch equipment, and the high-voltage switch 2 or the circuit breaker and the switch mechanism thereof need to be operated frequently, so that faults frequently occur in the part; on the other hand, in the operation process of the high-voltage switch equipment, if dust or other impurities exist, short circuit or fire is easily caused, so in order to keep the inside of the high-voltage switch equipment in a dust-free state, the maintenance process needs to be carried out in a dust-free insulating environment, and in the field maintenance process, the dust-free insulating environment is often difficult to provide; moreover, the maintenance of the high-voltage switch equipment can be completed only by using specific tools and equipment for assistance, and the tools and the equipment are difficult to provide on site under general conditions, so that the difficulty of the field maintenance of the high-voltage switch equipment is extremely high, and technicians cannot select to maintain on site under most conditions; that is, in the conventional art, the entire high-voltage switchgear is disassembled and transported to a factory for maintenance.
2. In order to ensure the safety of high-voltage switch equipment, a mode of integrating a common box is adopted in the existing equipment, namely: the load switch components in the high-voltage cabinet are self-sealed in a single high-voltage box 1, and then the high-voltage boxes 1 are fixed in the high-voltage cabinet/chamber side by side to prevent the high-voltage box from being exposed to the outside and causing danger; and each high-pressure tank 1 is filled with an insulating gas so as to reduce the insulating distance and further reduce the volume of the apparatus. However, if the high-voltage switchgear fails, because the complete set of load switches are located in the high-voltage boxes 1 filled with insulating gas, and the high-voltage boxes 1 in the high-voltage cabinet are not only mechanically connected but also connected by cables, the removal and replacement of the failed high-voltage box on site are very difficult, so that the whole high-voltage cabinet can be removed and a new high-voltage cabinet can be installed only by adopting a maintenance mode of replacing the whole high-voltage cabinet, and because the existing high-voltage cabinet is large in size (at least more than 1 cubic meter) and heavy in weight, the whole high-voltage cabinet can be lifted up on site by using a crane and then transported back to a factory, the maintenance engineering is huge, the time for occupying the field environment is long, the time and the labor are wasted, and the maintenance cost is huge.
3. Because there is existing mechanical connection between a plurality of high-voltage box 1, have cable junction again, consequently need pull out the cable that a plurality of high-voltage box 1 were connected each other earlier when demolising trouble high-voltage box 1, then untie the joint part between the high-voltage box 1, just can demolish trouble high-voltage box 1, correspondingly, when changing installation new high-voltage box 1, also need reconnect cable and mechanical connection structure between a plurality of high-voltage box 1, cause the maintenance cycle length, the degree of difficulty is big, the problem that maintenance cost is high. As is well known, in power circuit maintenance, the primary purpose is to recover power supply as soon as possible, and the time for dismounting and hoisting the box transformer substation is 1-2 days or more, and the period of re-production and installation seriously affects the power consumption requirements of users, and brings great difficulty to urban circuit maintenance.
4. The high-voltage board adopts independent function box structure, and every case becomes high tension switchgear and all differentiates, can't realize the universalization of part, is unfavorable for the storehouse of building of spare parts spare part, increases and maintains the fund, also influences the efficiency of maintaining simultaneously.
5. The increase of the inlet and outlet branches of the high-voltage cabinet can be realized by splicing the box bodies or horizontally arranging a plurality of mechanisms together, but the occupied area is obviously increased due to the increase of the inlet and outlet branches, and although the buried box transformer substation is buried underground, the workload and the difficulty of construction are greatly increased.
6. The compensation cabinet body in the low-voltage cabinet is designed according to the compensation design scheme of the initial prediction circuit, because a box transformer substation is the regional power equipment of control piece, the user that relates is numerous, the time that is equipped with to specific user demand access from the box transformer substation is different and often leads to many switchgear in the low-voltage cabinet's actual use time different, time span is probably great, for example 1 ~ 3 years even longer time, it is few to cause user's consumer in earlier stage, the compensation circuit is mostly idle, cause the wasting of resources, and idle equipment is because of the changeable influence of external environment factor, easily cause equipment ageing in the past in the long term, after coming into service in later stage, the probability increase of quality problems appears, influence power consumption safety.
7. On the other hand, because the existing box transformer substation is designed and configured in advance according to equipment planning, once installed, the box transformer substation becomes a fixed device, the variability and the expandability are low, and the requirements of urban development and change are often restricted in turn: along with urban development, the power consumption demand of users is continuously increased, the power consumption property is greatly changed, the situation that the general coefficient cannot meet the requirement possibly occurs after the box transformer substation is put into operation for a period of time, therefore, the capacity of equipment needs to be increased or an adjusting branch needs to be added, the existing box transformer substation equipment cannot be expanded due to the limitation of a fixed cabinet body, the equipment needs to be redesigned and purchased, the equipment is greatly improved, the cost of scrapping the original equipment and the cost of putting new equipment into operation again are caused, the social cost is increased, the required time is long, and the timeliness of power supply is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a distribution device's modularization case becomes, this distribution device's modularization case becomes and takes more reasonable standard module ization structure, standard high-voltage module in the ability on-the-spot quick replacement high-voltage board, maintenance time and the urban equipment maintenance cost that significantly reduces.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a distribution device's modularization case becomes, includes complete set box shell, high-voltage board, low-voltage board and transformer, high-voltage board and low-voltage board be located complete set box shell in and respectively with the transformer links to each other, the high-voltage board contain several sets of load switch or circuit breaker, every set of load switch comprises a load switch or circuit breaker and supporting cubical switchboard and a pair of generating line and corresponding three-phase terminal, characterized by, the high-voltage board adopt following modular structure: the bus, the cable and the load switch in the high-voltage cabinet respectively adopt a standard module structure which is independent into a box to form a switch box, a bus chamber and a cable chamber; the switch box mainly comprises a cube-shaped switch box body, a load switch, a switch mechanism and two groups of bus plug connectors of an input bus plug connector and an output bus plug connector, wherein the load switch is positioned in the switch box body and is connected with the switch mechanism positioned in front of the switch box body;
the bus chamber comprises a sealed box body, a plurality of buses and bus chamber interfaces positioned on the wall surface of the bus chamber, one end of each bus is connected with the bus interface, the other end of each bus is connected with a cable chamber, a pair of bus plug connectors on the switch box are correspondingly connected with a pair of bus interfaces, a plurality of pairs of bus chamber interfaces are arranged on the side wall of the bus chamber at intervals, and the buses in the bus chamber are connected according to an inlet and outlet branch design scheme;
the cable chamber mainly comprises a cubic box body and a plurality of groups of terminals, wherein at least one group of terminals are input terminals, the rest terminals are output terminals, and the terminals are used for being externally connected with a high-voltage cable and connecting with a bus.
Cable chamber in every group terminal be the three-phase terminal, the switch box on a pair of generating line plug connector constitute by a generating line input plug connector and a generating line output plug connector, the generating line room interface comprises a generating line room input interface and a generating line room output interface, the generating line plug connector on the switch box pairs to a pair electrical connector spare with the generating line room interface that corresponds.
The utility model discloses a theory of operation does: in each part of the box transformer high-voltage cabinet, because the load switch comprises functional parts of circuit breaking and mechanical energy storage, which belong to the part with high failure rate in high-voltage equipment, and the failure rate of parts such as bus and terminal is much lower relatively, the utility model divides the parts in the high-voltage cabinet on the basis, arranges the cable and the terminal in the cable chamber, arranges the bus with low failure rate in the bus chamber which is insulated and sealed, and presets a plurality of bus chamber interfaces on the side wall of the bus chamber, and the load switch with higher failure rate and the switch mechanism thereof use a set of load switch as a unit to be arranged into a modular structure which is convenient for independent installation/disassembly, namely the switch box of the utility model can be disassembled independently to the failure switch box rapidly when failure occurs, and then install a new universal switch box, and the disassembled fault switch box is sent back to the factory for maintenance. Therefore, the time and operation difficulty of disassembling, hoisting and installing the whole power distribution cabinet/room for field maintenance can be avoided, the workload and difficulty of field maintenance can be greatly reduced, and the purpose of rapidly recovering power supply can be realized.
The utility model discloses can be right the modularization high-voltage board do following improvement:
in order to effectively reduce the floor area of the high-voltage cabinet, the switch box modules in the high-voltage cabinet are arranged in a vertical superposition mode, and correspondingly, a plurality of pairs of bus chamber interfaces of the bus chamber are provided with bus chamber interfaces along the vertical direction so as to be in butt joint with bus plug connectors on the switch boxes which are vertically arranged in a superposition mode.
Preferably, the bus bar chamber, the switch box and the cable chamber are filled with insulating gas respectively. The ionization phenomenon generated by the insulating gas is much smaller than that of air, the arc extinguishing performance of the insulating gas is far higher than that of the air, and the volumes of the bus chamber, the switch box and the cable chamber can be effectively reduced, so that the overall volume of the high-voltage cabinet is reduced.
The utility model discloses can set up more than the required bus-bar room interface of initial stage power equipment design on the bus-bar room, the bus-bar room interface of not connecting the switch box is called and reserves the interface, leaves the space of expanded function for the needs of future development.
The preferred embodiments of the present invention may be: the input terminal in the cable chamber is connected with the input interface of the first group of bus chamber through a bus, after the input terminal is connected into the first switch box, the input terminal is output from the output interface of the first group of bus chamber and then correspondingly connected with the input interfaces of other bus chambers through the bus, except that the output interface of the first group of bus chamber is connected with the input interfaces of other bus chambers, the output interfaces of the other bus chambers are respectively connected with the output terminal in the cable chamber through the bus. The connection mode makes the first switch box become a main circuit switch, and the other switch boxes are connected in parallel and connected with the main circuit switch. The design realizes the division of functional areas, and provides great convenience for installation, maintenance and replacement of parts. When the switch box located in the branch circuit breaks down, all the branch circuit switch boxes can be powered off only by disconnecting the switch box located in the main circuit, so that the branch circuit switch boxes can be replaced on site, and circuit disconnection does not need to be carried out from the upstream, so that the difficulty and workload of fault maintenance of the branch circuit switch boxes can be greatly reduced, and the maintenance speed is accelerated.
Switch box be a switch module in order to contain a main switch case and a plurality of auxiliary switch case, main switch case control high tension circuit's main circuit, each auxiliary switch case is parallelly connected mutually and controls each branch road of high tension circuit respectively, can set up one or more switch module in a high-voltage board. According to the switch module designed in the way, when a switch box is found to be in fault, the switch mechanism of the main switch box is operated, the load switch in the main switch box is disconnected, and then the main circuit of the high-voltage circuit can be disconnected, so that no high-voltage current flows through the whole high-voltage box any more, and a worker can safely replace the switch box in fault.
The utility model discloses a make the switch box installs location and dismantlement more easily in high-voltage board vertical stack, switch box top surface and bottom surface can be equipped with positioning mechanism, positioning mechanism can be positioning guide and the location guide slot and the electromagnetic lock that match, positioning guide and the location guide slot that matches fix respectively at the top surface and the bottom surface of switch box, the electromagnetic lock then sets up the front portion that is located the switch box promptly at positioning mechanism's end, the location guide rail or the location guide slot of the switch box bottom surface of top cooperate with the location guide slot or the location guide rail of the switch box top surface of below, the back of targetting in place is installed, is fixed by the electromagnetic lock. The positioning guide rail and the matched positioning guide groove can adopt a dovetail groove type structure and also can adopt a parallel double-line sliding groove structure and are arranged along the length direction of the switch box. When the switch box is installed, the switch box is pushed to the end along the positioning mechanism and is locked by the electromagnetic lock when the switch box is electrified, so that the switch box can be prevented from being displaced in the using process, and meanwhile, the misoperation of the switch box can be prevented; when the electromagnetic lock is detached, the switch box is powered off, the electromagnetic lock is released, and then the switch box is pulled out along the positioning mechanism. The installation method is simple, convenient, rapid and firm, and can effectively save the time for installing and replacing components.
As an embodiment of the present invention, the cable chamber is composed of a plurality of cable boxes, and each cable box contains a set of terminals. Each group of three-phase terminals are respectively arranged in an independent cable chamber, so that the mutual influence among a plurality of groups of terminals can be reduced, the space required to be reserved among the groups of terminals is reduced, the whole volume of the cable chamber is reduced, and the safety of a circuit is improved.
The utility model discloses can also do following improvement to the low-voltage cabinet:
the low-voltage cabinet adopts the following modular structure:
the low-voltage cabinet comprises one or more horizontal bus chambers, a wire inlet cabinet, a wire outlet cabinet and a capacitance compensation cabinet; the horizontal bus chamber is provided with three-phase low-voltage cabinet interfaces which are respectively connected with the incoming line cabinet, the outgoing line cabinet and the capacitance compensation cabinet, and buses in the horizontal bus chamber are connected with the low-voltage cabinet interfaces;
the incoming line cabinet comprises an incoming line cabinet body, a main circuit breaker chamber and an incoming line metering chamber, wherein an incoming line cabinet plug connector used for being connected with a low-voltage cabinet interface is arranged at the top of the incoming line cabinet body; the main breaker chamber is detachably provided with a main breaker, the incoming line metering chamber is detachably provided with a metering CT (current transformer) and a meter, and the incoming line cabinet plug connector, the main breaker, the metering CT and the meter are connected in series through a bus;
the outlet cabinet comprises an outlet cabinet body, a branch switch chamber and a branch bus chamber, and the top of the outlet cabinet body is provided with an outlet cabinet plug connector for connecting with a low-voltage cabinet interface; the branch switch cabinet is characterized in that a plurality of branch switch cabinets are detachably mounted in the branch switch cabinet, each branch switch cabinet comprises a branch switch cabinet body, a branch switch, a switch mechanism and two groups of branch connectors of input branch connectors and output branch connectors, each branch switch is positioned in the corresponding branch switch cabinet body and is connected with the switch mechanism positioned in front of the corresponding branch switch cabinet body, and the input branch connectors and the output branch connectors form a pair of branch connectors and are positioned on the rear wall surface of the corresponding branch switch cabinet body and are used for connecting the branch switches with two groups of branch bus interfaces corresponding to the branch bus cabinets; the branch circuit bus chamber is arranged on the rear wall surface of the branch circuit switch chamber and comprises a sealed box body, a plurality of buses, an output cable and branch circuit bus interfaces, one pair of branch circuit bus interfaces is correspondingly connected with one pair of branch circuit plug connectors, the plurality of pairs of branch circuit bus interfaces are arranged on the front wall surface of the branch circuit bus chamber, and the buses and the output cable in the branch circuit bus chamber are connected according to the design scheme of an inlet branch circuit and an outlet branch circuit;
the capacitance compensation cabinet comprises a compensation cabinet body, a main isolating switch, an electric capacity chamber and a capacitance bus chamber, wherein the top of the compensation cabinet body is provided with a compensation cabinet plug connector used for being connected with a low-voltage cabinet interface; the capacitor chamber is detachably provided with one or more capacitor boxes, each capacitor box comprises a capacitor box body, a compensation capacitor and a capacitor plug connector, the compensation capacitor is positioned in the capacitor box body, and a group of capacitor plug connectors are composed of a confluence capacitor plug connector, a grounding capacitor plug connector and a control capacitor plug connector, are positioned on the rear wall surface of the capacitor box body and are used for connecting the compensation capacitor with a capacitor bus interface in the capacitor bus chamber; the capacitor bus chamber is arranged on the rear wall surface of the electric accommodating chamber and comprises a sealing box body, a plurality of bus bars, a grounding flat cable, a switching control line and capacitor bus interfaces, wherein a group of capacitor bus interfaces are correspondingly connected with a group of capacitor plug connectors, a plurality of groups of capacitor bus interfaces are arranged on the front wall surface of the capacitor bus chamber, and the bus bars, the grounding flat cable and the switching control line in the capacitor bus chamber are connected according to an inlet and outlet branch design scheme.
Each component in the modular low-voltage cabinet can be independently installed and detached, and is convenient to replace; the branch circuit bus chamber is provided with a bus and a branch circuit bus interface for connecting with the branch circuit switch box, a plurality of positions for installing the branch circuit switch box are preset in the branch circuit switch chamber, the number of the branch circuit switch boxes can be determined according to actual use requirements, the branch circuit switch box can be additionally installed along with the increase of the use requirements, and a space with expandable functions is reserved for future development requirements; the capacitor bus chamber is internally provided with a pre-installed bus bar, a grounding flat cable, a switching control line and a corresponding capacitor bus interface, a plurality of positions for installing the capacitor box are pre-arranged in the capacitor chamber, and the positions which are not connected with the capacitor box are called reserved positions, so that space with expandable functions is reserved for future development needs.
As a preferred embodiment of the present invention:
the branch switch boxes are stacked and installed in the branch switch chamber along the height direction, and the capacitor boxes are also stacked and installed in the capacitor chamber along the height direction.
The two side walls of the branch switch box body and the two side walls of the capacitor box body are provided with guide grooves, the two sides of the branch switch chamber and the two sides of the capacitor chamber are correspondingly provided with guide rails, and the branch switch box and the capacitor box are respectively arranged in the branch switch chamber and the capacitor chamber through the guide grooves and the guide rails. The branch switch box and the capacitance box are arranged into drawer type structures through the guide groove and the guide rail, and are installed or disassembled in a pushing-in or pulling-out mode, so that the branch switch box and the capacitance box are more convenient to operate during installation, overhaul and replacement, and the time is saved.
Preferably, the bottom and the top of the low-voltage cabinet and the top of the complete set of box body shell are provided with ventilation and heat dissipation ports, the branch bus chamber and the capacitor bus chamber in the low-voltage cabinet are communicated with the ventilation and heat dissipation ports at the bottom and the top of the low-voltage cabinet, air enters from the ventilation and heat dissipation ports at the bottom of the low-voltage cabinet, passes through the ventilation and heat dissipation ports at the top of the low-voltage cabinet through the branch bus chamber and the capacitor bus chamber, and is further discharged from the ventilation and heat dissipation ports at the top of the complete set of box body shell. Through the heat dissipation design, air is sucked from the bottom and the top is subjected to concentrated heat dissipation, so that the exhaust of hot air in the cabinet can be effectively accelerated, the temperature in the cabinet is reduced, and the service life of components is prolonged.
Preferably, complete set box shell adopt resistant time metal material to make, make complete set box shell resist the influence that the weather brought to it better, prolong view shell's life protects inside other components and parts better.
The utility model discloses following beneficial effect has:
(1) the utility model discloses set up the module respectively with the low generating line of fault rate and the three-phase terminal of load switch and operating device that the fault rate is high in the high-voltage board, modularize every set of load switch into standard switch box, set up all generating lines in an independent generating line room, and pack in the generating line room is filled with insulating gas, so that reduce insulation distance, thereby realize the separation with the low part of fault rate and the high part of fault rate (load switch and cubical switchboard) not only reducible course of work the influence between the part is each other, can also realize on-the-spot demolish the change trouble switch box simultaneously, thereby reach the on-the-spot and just can carry out electrical power rush-repair fast, carry out quick replacement to the switch box, easy operation, time are short, the purpose of quick recovery power supply, solved the operation such as the whole high-voltage board of prior art needs to dismantle, hoist, produce again and the field operation engineering volume that, The difficulty is high and the recovery power supply speed is seriously influenced;
(2) in addition, because the positions of the bus and each part are relatively fixed, insulating gas is respectively filled in various modularized boxes, the insulating distance can be obviously reduced, and the volume of each modularized box is reduced, thereby greatly improving the space utilization rate of the high-voltage cabinet, effectively saving the occupied area of the box transformer, reducing the occupation of urban land and the investment of social resources, and reducing the social burden;
(3) the high-voltage cabinet and the low-voltage cabinet are both provided with reserved interfaces, and can be installed according to the lowest configuration during the initial installation, so that the initial investment is reduced, the problem caused by the idle equipment is solved, and modular box parts can be gradually added according to the actual demand according to the progress of urban planning development in the using process, so that the expansion of functions and flexible strain urban planning are realized;
(4) the switch box in the high-voltage cabinet of the utility model comprises a main switch box and a plurality of auxiliary switch boxes as a switch module, when the switch box is found to be out of order, the switch mechanism of the main switch box is operated to disconnect the load switch in the main switch box, thus the main circuit of the high-voltage circuit can be disconnected, therefore, the whole high-voltage box can not flow high-voltage current any more, the worker can safely replace the switch box with the fault, and the safety of the maintenance operation process of the high-voltage cabinet is greatly improved;
(5) the plurality of switch boxes in the high-voltage cabinet adopt the overlapped installation mode in the height direction, and compared with the parallel installation in the horizontal direction between the existing plurality of high-voltage boxes, the overlapped installation mode in the height direction occupies small area, and the whole volume of the high-voltage cabinet is reduced;
(6) the utility model discloses become the cabinet with main circuit breaker and measurement form independent in the low-voltage cabinet, each part is all designed into general modularization box, and each modularization box can independently separate each other, when breaking down, can go on rapidly troubleshooting, quick replacement part, the power supply resumes fast, greatly reduced the influence of trouble to user's power consumption;
(7) the branch switch box and the capacitance box in the low-voltage cabinet can be arranged into drawer type structures, so that the low-voltage cabinet is convenient to assemble and disassemble, and the time for installing and replacing parts is effectively saved;
(8) the components of the high-voltage cabinet and the low-voltage cabinet are connected by the plug connecting components, so that the quick connection and disconnection of circuits between the modular boxes can be realized, and convenience is brought to the installation, disassembly and replacement of the modular box components;
(9) the utility model installs the main heating component bus in the low-voltage cabinet in the horizontal bus chamber at the top of the low-voltage cabinet and the branch bus chamber and the capacitance bus chamber in the vertical direction, adopts the bottom air inlet and top concentrated heat dissipation structure, and the branch bus chamber and the capacitance bus chamber arranged in the height direction are beneficial to the natural convection of cold and heat, can quickly discharge the hot air in the low-voltage cabinet, reduce the temperature in the low-voltage cabinet and prolong the service life of the components;
(10) the high-voltage cabinet and the low-voltage cabinet of the utility model are externally assembled into a set of box body shell, and weather-proof metal materials are adopted to provide outdoor protection for power distribution equipment;
(11) modular structure's case become can use and become at general ground case, also can be applied to view formula and bury the case and become, the suitability is strong, the range of application is wide.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a front view of a prior art high voltage cabinet.
Fig. 2 is a side perspective view of a prior art high voltage cabinet.
Fig. 3 is a front partial sectional view of a modular landscape underground box-type substation of the power distribution device of embodiment 1.
Fig. 4 is a side view of the modular landscape underground box transformer of the power distribution apparatus of embodiment 1 (landscape enclosure door open state).
Fig. 5 is a front view of the high-voltage cabinet in the embodiment 2.
Fig. 6 a side perspective view of the high voltage cabinet of embodiment 2.
Fig. 7 is a schematic diagram of the circuit connection relationship of the switch box in embodiment 2.
Fig. 8 is a front view of the low-voltage cabinet in the embodiment 2.
Fig. 9 is a side perspective view of the inlet cabinet of embodiment 2.
Fig. 10 is a side perspective view of the outlet cabinet in embodiment 2.
FIG. 11 is a side perspective view of the capacitance compensation cabinet of embodiment 2.
Fig. 12 is a top perspective view of the low-voltage cabinet in the embodiment 2.
Fig. 13 is a front view of the low-voltage cabinet in the embodiment 3.
Fig. 14 a side perspective view of the switch box of embodiment 4.
Fig. 15 is a front view of a modular floor box substation of the embodiment 5 power distribution apparatus.
Reference numerals: 1-high pressure tank; 11-a box body; 12-a cable interface; 2-a high-voltage switch; 3-bus bar; 4-a terminal; 50-landscape complete box body; 500-landscape shell; 501-top ventilation and heat dissipation ports; 502-landscape enclosure door; 5-a high-voltage cabinet; 51-a switch box; 510-opening and closing the box body; 511-load switch; 512-a switch mechanism; 513-reserved interface; 513 a-input bus connector; 513 b-output bus plug connector; 52-bus bar chamber; 521 a-bus chamber input interface; 521 b-bus chamber output interface; 53-cable chamber; 530-cable box; 531-terminal; 54-an electromagnetic lock; 551-positioning the guide rail; 552-positioning guide slots; 6-low-voltage cabinet; 60-reserved position; 61-horizontal bus bar compartment; 611-low-voltage cabinet interface; 620-incoming cabinet plug connector; 62-a wire inlet cabinet; 621-main breaker chamber; 622-incoming line metering chamber; 630-outlet cabinet plug-in components; 63-an outgoing line cabinet; 631-branch bus bar compartment; 6311-branch bus interface; 632-branch switch box; 6321-branch switching mechanism; 6322-branch switch; 6323-branch connector; 64-capacitance compensation cabinets; 640-compensation cabinet plug connector; 641-main isolating switch; 642 a capacitor box; 6421-compensation capacitance; 6422-capacitor plug; 6422 a-bus capacitor plug; 6422 b-grounded capacitance plug; 6422 c-control capacitor plug; 643 — capacitive bus compartment; 6431-capacitive bus interface; 65-ventilation and heat dissipation ports; 70-buried transformer tank; 7-a transformer; 9-complete set of box body outer shell.
Detailed Description
The invention is further illustrated by the following specific examples and comparative examples.
Example 1
As shown in fig. 3 to 4, the modular box of the power distribution device becomes a buried box transformer, and includes a landscape complete box 50 located on the ground surface and a buried transformer box 70 located in the pit, the landscape complete box 50 is located above the buried transformer box 70 and connected to the buried transformer box 70, the landscape complete box 50 includes a landscape shell 500, and a high-voltage cabinet 5 and a low-voltage cabinet 6 located in the landscape shell 500, and the high-voltage cabinet 5 adopts the following modular structure: the bus 3, the cable and the load switch 511 in the high-voltage cabinet 5 respectively adopt a standard module structure which is independent into a box to form a switch box 51, a bus chamber 52 and a cable chamber 53;
the bus bar chamber 52, the switch box 51, and the cable chamber 53 are filled with an insulating gas. The ionization phenomenon generated by the insulating gas is much smaller than that of air, and the arc extinguishing performance of the ionization phenomenon is much higher than that of air, so that the volumes of the bus bar chamber 52, the switch box 51 and the cable chamber 53 can be effectively reduced, and the overall volume of the high-voltage cabinet 5 can be further reduced.
More bus bar room interfaces than required by the initial power equipment design are arranged on the bus bar room 52, and the bus bar room interface which is not connected with the switch box 51 is called a reserved interface 513, so that a space with expandable functions is reserved for the future development of the requirement.
The bottom and the top of the low-voltage cabinet 6 are provided with ventilation and heat dissipation ports 65, the top of the landscape shell 500 is provided with a top ventilation and heat dissipation port 501, and air enters from the ventilation and heat dissipation port at the bottom of the low-voltage cabinet 6 and is discharged from the ventilation and heat dissipation port at the top of the landscape shell 500. Through the heat dissipation design, air is sucked from the bottom and the top is subjected to concentrated heat dissipation, so that the exhaust of hot air in the cabinet can be effectively accelerated, the temperature in the cabinet is reduced, and the service life of components is prolonged.
The landscape shell 500 is made of weather-resistant metal materials, so that the landscape shell 500 can better resist the influence of weather on the landscape shell, the service life of the landscape shell 500 is prolonged, and other internal components are better protected.
Example 2
As shown in fig. 5 to 8, the high voltage cabinet 5 has the following modular structure: the bus 3, the cable and the load switch 511 in the high-voltage cabinet 5 respectively adopt a standard module structure which is independent into a box to form a switch box 51, a bus chamber 52 and a cable chamber 5353; the switch box 51 mainly comprises a cubical switch box body 510, a load switch 511, a switch mechanism 512, an input bus connector 513a and an output bus connector 513b, wherein the load switch 511 is positioned in the switch box body 510 and is connected with the switch mechanism 512 positioned in front of the switch box body 510, the input bus connector 513a and the output bus connector 513b form a pair of bus connectors and are positioned on the wall surface of the switch box body 510, and the switch box is used for connecting the circuit of the load switch 511 with two groups of bus interfaces corresponding to the bus chamber 52;
the bus chamber 52 comprises a sealed box body, a plurality of buses 3 and bus chamber interfaces corresponding to the buses 3, a pair of bus chamber interfaces comprises a bus chamber input interface 521a and a bus chamber output interface 521b which are respectively and correspondingly connected with an input bus connector 513a and an output bus connector 513b on the switch box 51, the plurality of pairs of bus chamber interfaces are arranged on the side wall of the bus chamber 52 at intervals, and the buses 3 in the bus chamber 52 are connected according to an in-out branch design scheme;
the cable chamber 53 mainly includes a cubic box and a plurality of terminals 531, wherein at least one terminal 531 is a three-phase input terminal, the other terminals are output terminals, and the terminal 531 is used for externally connecting a high-voltage cable and connecting a bus 3. The cable chamber 53 is composed of a plurality of cable boxes 530, and each cable box 530 includes a set of terminals 531 therein. Each group of three-phase terminals is respectively installed in the independent cable box 530, so that the mutual influence among the groups of terminals 531 can be reduced, the space required to be reserved among the groups of terminals 531 is reduced, the whole volume of the cable chamber 53 is reduced, and the safety of the circuit is improved.
The input terminal in the cable chamber 53 is connected with the first group of bus chamber input interface 521a through the bus 3, and after the first switch box 51 is connected, the input terminal is output from the first group of bus chamber output interface 521b, and is correspondingly connected with the other bus chamber input interface 521a through the bus 3, except that the first group of bus chamber output interface 521b is connected with the other bus chamber input interface 521a, the other bus chamber output interfaces 521b are respectively connected with the output terminal in the cable chamber 53 through the bus 3. This connection makes the first switch box 51 the main switch, and the remaining switch boxes 51 are connected in parallel and connected to the main switch. The design realizes the division of functional areas, and provides great convenience for installation, maintenance and replacement of parts. When the switch box 51 located in the branch circuit breaks down, all the branch circuit switch boxes 51 can be powered off by only disconnecting the switch box 51 located in the main circuit, so that the branch circuit switch boxes 51 can be replaced on site, and circuit disconnection from the upstream is not needed, thereby greatly reducing the difficulty and workload of fault maintenance of the branch circuit switch boxes 51 and accelerating the maintenance speed.
In order to make the switch box 51 easier to mount, position and detach in the high-voltage cabinet 5 by vertical superposition, the top surface and the bottom surface of the switch box 51 are provided with positioning mechanisms, the positioning mechanisms are a positioning guide rail 551, a positioning guide groove 552 matched with the positioning guide rail 551 and an electromagnetic lock 54, the positioning guide rail 551 and the positioning guide groove 552 adopt a dovetail groove type structure and are arranged along the length direction of the switch box 51, the positioning guide groove 552 is set on the top surface of the switch box 51, and correspondingly, the positioning guide rail 551 is arranged on the bottom surface of the switch box; the electromagnetic lock 54 is mounted at the end of the positioning mechanism, that is, is located at the front part of the switch box 51, and the positioning guide 551 on the bottom surface of the upper switch box 51 is matched with the positioning guide 552 on the top surface of the lower switch box 51, and after being mounted in place, the electromagnetic lock is fixed. The switch box 51 designed in this way, when being installed, the switch box 51 is pushed into the end along the positioning guide 551, and when the switch box 51 is electrified, the electromagnetic lock 54 locks the switch box, so that the switch box 51 can be prevented from displacement in the using process, and meanwhile, the misoperation on the switch box 51 can be prevented; when the switch box 51 is detached, the switch box 51 is powered off, the electromagnetic lock 54 is released, and then the switch box 51 is pulled out along the positioning guide 551. The installation method is simple, convenient, rapid and firm, and can effectively save the time for installing and replacing components.
Switch box 51 be a switch module in order to contain a main switch box and a plurality of auxiliary switch box, main switch box control high tension circuit's main circuit, each auxiliary switch box is parallelly connected mutually and controls each branch road of high tension circuit respectively, can set up one or more switch module in a high-voltage board 5. According to the switch module designed in the way, when a switch box is found to be in fault, the switch mechanism of the main switch box is operated, the load switch in the main switch box is disconnected, and then the main circuit of the high-voltage circuit can be disconnected, so that no high-voltage current flows through the whole high-voltage box any more, and a worker can safely replace the switch box in fault.
Example 3
As shown in fig. 9 to 13, the low-voltage cabinet 6 includes one or more horizontal bus bar rooms 61, an incoming cabinet 62, an outgoing cabinet 63, and a capacitance compensation cabinet 64; the horizontal bus chamber 61 is provided with three-phase low-voltage cabinet interfaces 611 which are respectively connected with the incoming line cabinet 62, the outgoing line cabinet 63 and the capacitance compensation cabinet 64, and the bus 3 in the horizontal bus chamber 61 is connected with each low-voltage cabinet interface 611;
the incoming line cabinet 62 comprises an incoming line cabinet body, a main circuit breaker chamber 621 and an incoming line metering chamber 622, wherein the top of the incoming line cabinet body is provided with an incoming line cabinet connector 620 used for being connected with a low-voltage cabinet interface 611; the main circuit breaker room 621 is detachably provided with a main circuit breaker, the incoming line metering room 622 is detachably provided with a metering CT (current transformer) and a meter, and the incoming line cabinet plug connector 620, the main circuit breaker, the metering CT and the meter are connected in series through a bus 3;
the outlet cabinet 63 comprises an outlet cabinet body, a branch switch chamber and a branch bus chamber 631, and the top of the outlet cabinet body is provided with an outlet cabinet plug connector 630 connected with the low-voltage cabinet interface 611; the branch switch chamber is detachably provided with a plurality of branch switch boxes 632, each branch switch box 632 comprises a branch switch box body, a branch switch 6322, a branch switch mechanism 6321 and two groups of branch connectors 6323 for input and output, each branch switch 6322 is located in each branch switch box body and is connected with the branch switch mechanism 6321 located in front of the branch switch box body, and one input branch connector and one output branch connector form a pair of branch connectors 6323 and are located on the rear wall surface of each branch switch box body, so as to connect the branch switch 6322 with the two groups of branch bus interfaces 6311 corresponding to the branch bus chamber 631; the branch bus chamber 631 is arranged on the rear wall surface of the branch switch chamber, the branch bus chamber 631 comprises a sealed box body, a plurality of buses 3, an output cable and a branch bus interface 6311, a pair of branch bus interfaces 6311 is correspondingly connected with a pair of branch connectors 6323, the plurality of pairs of branch bus interfaces 6311 are arranged on the front wall surface of the branch bus chamber 631, and the buses 3 and the output cable in the branch bus chamber 631 are connected according to an in-out branch design scheme;
the capacitance compensation cabinet 64 comprises a compensation cabinet body, a main isolating switch 641, an electric accommodating chamber and a capacitance bus chamber 643, wherein the top of the compensation cabinet body is provided with a compensation cabinet plug connector 640 for connecting with a low-voltage cabinet interface 611; one or more capacitor boxes 642 are detachably mounted in the electricity accommodating chamber, each capacitor box 642 comprises a capacitor box body, a compensation capacitor 6421 and a capacitor plug-in unit 6422, the compensation capacitor 6421 is located in the capacitor box body, and a group of capacitor plug-in units 6422 consists of a convergence capacitor plug-in unit 6422a, a grounding capacitor plug-in unit 6422b and a control capacitor plug-in unit 6422c, and is located on the rear wall surface of the capacitor box body, and is used for connecting the compensation capacitor 6421 with a capacitor bus interface in the capacitor bus chamber 643; the capacitor bus chamber 643 is arranged on a rear wall surface of the electric accommodating chamber, the capacitor bus chamber 643 comprises a sealed box body, a plurality of bus bars, a grounding flat cable, a switching control line and a capacitor bus interface, one group of capacitor bus interfaces are correspondingly connected with one group of capacitor plug connectors 6422, a plurality of groups of capacitor bus interfaces are arranged on a front wall surface of the capacitor bus chamber 643, and the bus bars, the grounding flat cable and the switching control line in the capacitor bus chamber 643 are connected according to an in-out branch design scheme.
The branch switch boxes 632 are stacked in the height direction in the branch switch chamber, and the capacitor boxes 642 are also stacked in the height direction in the capacitor chamber.
Guide grooves are formed in the two side wall surfaces of the branch switch box 632 and the capacitance box 642, guide rails are correspondingly arranged on the two sides of the branch switch chamber and the capacitance chamber, and the branch switch box 632 and the capacitance box 642 are respectively installed in the branch switch chamber and the capacitance chamber through the guide grooves and the guide rails. The branch switch box 632 and the capacitance box 642 are arranged into drawer type structures through the guide grooves and the guide rails, and are installed and/or disassembled in a pushing and/or pulling mode, so that the branch switch box 632 and the capacitance box 642 are more convenient to operate during installation, overhaul and replacement, and time is saved.
Example 4
As shown in fig. 14, the difference between embodiment 4 and embodiment 3 is that the low-voltage cabinet 6 includes a plurality of horizontal bus bar chambers 61, the horizontal bus bar chambers 61 are integrally formed with an incoming cabinet 62, an outgoing cabinet 63, and a capacitance compensation cabinet 64, and the horizontal bus bar chambers 61 are connected by connectors and interfaces.
The position of the capacitance compensation cabinet 64 where the capacitance box 642 is not installed is the reserved position 60.
Example 5
As shown in fig. 15, embodiment 5 is different from embodiment 2 in that a positioning guide 551 and a positioning guide 552, which are positioning means used for the switch box 51, have a two-wire chute structure.
Example 6
Example 6 differs from example 2 in that:
example 6 the modular cabinet of the power distribution apparatus becomes a ground cabinet, wherein the high-voltage cabinet 5, the low-voltage cabinet 6 and the transformer 7 are all disposed in a set of cabinet housings 9 located on the ground.
It should be noted that the above-mentioned embodiments of the present invention are merely illustrative and not restrictive, and all modifications and changes made to the above-mentioned embodiments on the basis of the technical features of the present invention are not changed.

Claims (10)

1. The utility model provides a distribution device's modularization case becomes, includes complete set box shell, high-voltage board, low-voltage board and transformer, high-voltage board and low-voltage board be located complete set box shell in and respectively with the transformer links to each other, the high-voltage board contain several sets of load switch or circuit breaker, every set of load switch comprises a load switch or circuit breaker and supporting cubical switchboard and a pair of generating line and corresponding three-phase terminal, its characterized in that, the high-voltage board adopt following modular structure: the bus, the cable and the load switch in the high-voltage cabinet respectively adopt a standard module structure which is independent into a box to form a switch box, a bus chamber and a cable chamber; the switch box mainly comprises a cube-shaped switch box body, a load switch, a switch mechanism and two groups of bus plug connectors of an input bus plug connector and an output bus plug connector, wherein the load switch is positioned in the switch box body and is connected with the switch mechanism positioned in front of the switch box body;
the bus chamber comprises a sealed box body, a plurality of buses and bus chamber interfaces positioned on the wall surface of the bus chamber, one end of each bus is connected with the bus interface, the other end of each bus is connected with a cable chamber, a pair of bus plug connectors on the switch box are correspondingly connected with a pair of bus interfaces, a plurality of pairs of bus chamber interfaces are arranged on the side wall of the bus chamber at intervals, and the buses in the bus chamber are connected according to an inlet and outlet branch design scheme;
the cable chamber mainly comprises a cubic box body and a plurality of groups of terminals, wherein at least one group of terminals are input terminals, the rest terminals are output terminals, and the terminals are used for being externally connected with a high-voltage cable and connecting with a bus.
2. The modular box transformer substation of an electrical distribution device according to claim 1, wherein each group of terminals in the cable room is a three-phase terminal, the pair of bus connectors on the switch box comprises a bus input connector and a bus output connector, the bus room interface comprises a bus room input interface and a bus room output interface, and the bus connectors on the switch box and the corresponding bus room interfaces are paired into a pair of electrical connection components.
3. The modular cabinet transformer of an electrical distribution apparatus of claim 1, wherein the switchbox modules in the high voltage cabinet are arranged in a vertically stacked manner, and accordingly, pairs of busbar room interfaces of the busbar room are arranged in a vertical direction to be butted against busbar connectors on the switchbox arranged in a vertically stacked manner.
4. The modular cabinet transformer of claim 3, wherein the bus bar compartment, the switch box compartment and the cable compartment are filled with an insulating gas, respectively.
5. The modular transformer substation of an electrical distribution device of claim 4, wherein the input terminals of the cable room are connected to the first set of bus room input interfaces via bus bars, and after being connected to the first switch box, the input terminals are output from the first set of bus room output interfaces and correspondingly connected to the other bus room input interfaces via bus bars, and the other bus room output interfaces are connected to the output terminals of the cable room via bus bars, except that the first set of bus room output interfaces are connected to the other bus room input interfaces.
6. The modular box transformer substation of the power distribution device according to claim 4, wherein the top surface and the bottom surface of the switch box are provided with positioning mechanisms, the positioning mechanisms can be a positioning guide rail, a positioning guide groove and an electromagnetic lock, the positioning guide rail and the positioning guide groove are respectively fixed on the top surface and the bottom surface of the switch box, the electromagnetic lock is arranged at the tail end of the positioning mechanism, namely, at the front part of the switch box, the positioning guide rail or the positioning guide groove on the bottom surface of the switch box above is matched with the positioning guide rail or the positioning guide rail on the top surface of the switch box below, and the electromagnetic lock is fixed after being installed in place.
7. The modular cabinet transformer of the power distribution device as claimed in claim 6, wherein the positioning guide rails and the corresponding positioning guide grooves are of dovetail groove type structure or parallel double-line sliding groove structure and are arranged along the length direction of the switch cabinet.
8. The modular cabinet transformer of claim 4, wherein the cable compartment comprises a plurality of cable cabinets, each cable cabinet having a respective set of terminals.
9. The modular box transformer substation of the power distribution device according to any one of claims 1 to 8, characterized in that the low-voltage cabinet adopts the following modular structure:
the low-voltage cabinet comprises one or more horizontal bus chambers, a wire inlet cabinet, a wire outlet cabinet and a capacitance compensation cabinet; the horizontal bus chamber is provided with three-phase low-voltage cabinet interfaces which are respectively connected with the incoming line cabinet, the outgoing line cabinet and the capacitance compensation cabinet, and buses in the horizontal bus chamber are connected with the low-voltage cabinet interfaces;
the incoming line cabinet comprises an incoming line cabinet body, a main circuit breaker chamber and an incoming line metering chamber, wherein an incoming line cabinet plug connector used for being connected with a low-voltage cabinet interface is arranged at the top of the incoming line cabinet body; the main breaker chamber is detachably provided with a main breaker, the incoming line metering chamber is detachably provided with a metering CT (current transformer) and a meter, and the incoming line cabinet plug connector, the main breaker, the metering CT and the meter are connected in series through a bus;
the outlet cabinet comprises an outlet cabinet body, a branch switch chamber and a branch bus chamber, and the top of the outlet cabinet body is provided with an outlet cabinet plug connector for connecting with a low-voltage cabinet interface; the branch switch cabinet is characterized in that a plurality of branch switch cabinets are detachably mounted in the branch switch cabinet, each branch switch cabinet comprises a branch switch cabinet body, a branch switch, a switch mechanism and two groups of branch connectors of input branch connectors and output branch connectors, each branch switch is positioned in the corresponding branch switch cabinet body and is connected with the switch mechanism positioned in front of the corresponding branch switch cabinet body, and the input branch connectors and the output branch connectors form a pair of branch connectors and are positioned on the rear wall surface of the corresponding branch switch cabinet body and are used for connecting the branch switches with two groups of branch bus interfaces corresponding to the branch bus cabinets; the branch circuit bus chamber is arranged on the rear wall surface of the branch circuit switch chamber and comprises a sealed box body, a plurality of buses, an output cable and branch circuit bus interfaces, one pair of branch circuit bus interfaces is correspondingly connected with one pair of branch circuit plug connectors, the plurality of pairs of branch circuit bus interfaces are arranged on the front wall surface of the branch circuit bus chamber, and the buses and the output cable in the branch circuit bus chamber are connected according to the design scheme of an inlet branch circuit and an outlet branch circuit;
the capacitance compensation cabinet comprises a compensation cabinet body, a main isolating switch, an electric capacity chamber and a capacitance bus chamber, wherein the top of the compensation cabinet body is provided with a compensation cabinet plug connector used for being connected with a low-voltage cabinet interface; the capacitor chamber is detachably provided with one or more capacitor boxes, each capacitor box comprises a capacitor box body, a compensation capacitor and a capacitor plug connector, the compensation capacitor is positioned in the capacitor box body, and a group of capacitor plug connectors are composed of a confluence capacitor plug connector, a grounding capacitor plug connector and a control capacitor plug connector, are positioned on the rear wall surface of the capacitor box body and are used for connecting the compensation capacitor with a capacitor bus interface in the capacitor bus chamber; the capacitor bus chamber is arranged on the rear wall surface of the electric accommodating chamber and comprises a sealed box body, a plurality of bus bars, a grounding flat cable, a switching control line and capacitor bus interfaces, wherein one group of capacitor bus interfaces are correspondingly connected with one group of capacitor plug connectors, a plurality of groups of capacitor bus interfaces are arranged on the front wall surface of the capacitor bus chamber, and the bus bars, the grounding flat cable and the switching control line in the capacitor bus chamber are connected according to an inlet and outlet branch circuit design scheme;
the branch switch boxes are stacked and installed in the branch switch chamber along the height direction, and the capacitor boxes are also stacked and installed in the capacitor chamber along the height direction;
the two side walls of the branch switch box body and the two side walls of the capacitor box body are provided with guide grooves, the two sides of the branch switch chamber and the two sides of the capacitor chamber are correspondingly provided with guide rails, and the branch switch box and the capacitor box are respectively arranged in the branch switch chamber and the capacitor chamber through the guide grooves and the guide rails.
10. The modular cabinet transformer of power distribution equipment of claim 9, wherein the bottom and top of the low voltage cabinet and the top of the complete set of cabinet housings are provided with ventilation and heat dissipation openings, the branch bus chamber and the capacitor bus chamber in the low voltage cabinet are communicated with the ventilation and heat dissipation openings at the bottom and top of the low voltage cabinet, air enters from the ventilation and heat dissipation opening at the bottom of the low voltage cabinet, passes through the ventilation and heat dissipation opening at the top of the low voltage cabinet through the branch bus chamber and the capacitor bus chamber, and is further discharged from the ventilation and heat dissipation opening at the top of the complete set of cabinet housings.
CN201921102210.6U 2019-07-15 2019-07-15 Modular box transformer substation of power distribution device Active CN211530520U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112736717A (en) * 2020-12-28 2021-04-30 徐州海伦哲特种车辆有限公司 All-weather operation's removal case becomes car
WO2022089068A1 (en) * 2020-10-28 2022-05-05 华为数字能源技术有限公司 Plug box and data center

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022089068A1 (en) * 2020-10-28 2022-05-05 华为数字能源技术有限公司 Plug box and data center
CN112736717A (en) * 2020-12-28 2021-04-30 徐州海伦哲特种车辆有限公司 All-weather operation's removal case becomes car

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Address before: Area A1, factory building, Taiji industrial town, Yinzhan management area, Longtang Town, Qingcheng District, Qingyuan City, Guangdong Province, 511500

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