CN106877315B - Medium-voltage distributed power supply and distribution system for high-rise building - Google Patents
Medium-voltage distributed power supply and distribution system for high-rise building Download PDFInfo
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- CN106877315B CN106877315B CN201710161117.1A CN201710161117A CN106877315B CN 106877315 B CN106877315 B CN 106877315B CN 201710161117 A CN201710161117 A CN 201710161117A CN 106877315 B CN106877315 B CN 106877315B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for AC mains or AC distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B7/00—Enclosed substations, e.g. compact substations
- H02B7/06—Distribution substations, e.g. for urban network
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Abstract
The invention provides a medium-voltage distributed power supply and distribution system for use in a high-rise building, and belongs to the technical field of power supply and distribution systems. The invention provides a power supply and distribution system which comprises a high-voltage incoming line, a high-voltage outgoing line, a low-voltage power transmission line, an electric appliance, a miniature box transformer and a medium-voltage switching station, and is characterized in that one end of the medium-voltage switching station is connected with the high-voltage incoming line, and the other end of the medium-voltage switching station is connected with the high-voltage outgoing line; one end of the miniature box transformer is connected with the high-voltage outlet wire, and the other end of the miniature box transformer is connected with the low-voltage power transmission wire; the other end of the low-voltage power transmission line is connected with the electric appliance; the miniature box transformer comprises a box body, wherein the box body is cuboid, and the box body comprises a main body, a top cover and a safety door. The invention adopts the medium-voltage distributed power supply and distribution, and dispersedly arranges the miniature box transformer for large buildings and high-rise buildings with larger loads, so that the arrangement of the transformer is as close to the power load as possible, the length of a low-voltage line is reduced, and the distance of the low-voltage power transmission line to electric equipment is shorter, so that voltage drop and power transmission loss are smaller.
Description
[ field of technology ]
The invention relates to the field of transformer substation systems, in particular to a medium-voltage distributed power distribution system for high-rise buildings, which can save electric energy and stabilize the electricity quality of users.
[ background Art ]
Transformer substation, place of changing voltage. In order to transmit the electric energy generated by the power plant to a far place, the voltage must be increased, changed into high-voltage electricity, and then the voltage is reduced as required to the vicinity of the user, and the work of increasing the voltage is completed by a transformer substation. The main equipment of the substation is a switch and a transformer. The power substation is called as a small power substation according to different sizes. The transformer substation is larger than the substation. The substation is a step-down substation with voltage class below 110 KV; the transformer substation comprises a step-up transformer substation and a step-down transformer substation with various voltage levels. A substation is an electrical facility in an electrical power system that converts voltage, receives and distributes electrical energy, controls the flow of electrical power, and regulates the voltage, which connects the electrical grids of the various levels of voltage via its transformers. The transformer station is in a specific environment; is a process of converting AC-DC-AC. Like submarine power cables and long-distance transport. Some adopt the high-voltage direct current power transmission and transformation form. Direct current transmission overcomes the capacitive reactance loss of alternating current transmission. Has energy-saving effect.
At present, the box transformer of most transformer substations is large-scale box transformer, and the transformer in the box transformer is connected after the high-voltage line inlet wire, then distributes low-voltage line from the low-voltage end of transformer and introduces into the building, and wherein the box transformer is bulky, and inside all arranges side by side, needs longer low-voltage line to be connected with user's electrical apparatus, not only extravagant space, has increased the cost of wire rod and the electric loss of wire rod moreover, in addition, need plan an area in addition in the district of high-rise building and be used for placing large-scale box transformer. Not only needs to occupy more positions, but also needs to be safe and protected to prevent personnel in the building from electric shock and the like, and has certain potential safety hazard; in addition, electricians need get into the case and become in order to operate to the change maintenance of ammeter or distribution control, also have certain hidden danger to electricians' safety, easily cause electricians to electrocute, and case becomes inside because of equipment generates heat moreover, leads to the temperature to rise, especially in the summer of being hot, also very uncomfortable when maintaining or other electricians operate electricians. Meanwhile, the traditional power supply mode is as follows: the 10kV medium-voltage terminal user adopts radial type and transformer centralized power supply from a power supply and distribution system, and often intensively arranges a large-capacity transformer close to a main load center, so that the power supply reliability of the power distribution system is high, the management is convenient, but the number of lines and high-voltage switch cabinets is large, and the power distribution system is suitable for a power distribution system with a small number of outgoing lines and a short distance.
The high capacity of the transformer makes the requirement of breaking capacity of the low-voltage protective electric appliance high, and causes long low-voltage line for equipment far away from the load center, high consumption of nonferrous metal, high line loss, sometimes the terminal voltage cannot meet the requirement, and the power supply quality is poor; and moreover, problems can not be found in time or the circuit condition of a user can not be monitored, so that a large amount of manpower and material resources are required, and the efficiency is reduced.
[ invention ]
The invention aims at: aiming at the problems, the invention provides a medium-voltage distributed power distribution system for high-rise buildings, which adopts medium-voltage distributed power supply and distribution to disperse and arrange miniature boxes for large-scale buildings and high-rise buildings with larger loads, so that the arrangement of a transformer is as close to the power load as possible, the length of a low-voltage line is reduced, and the distance from the low-voltage power transmission line to electric equipment is shorter, so that voltage drop and power transmission loss are smaller.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the medium voltage distributed power distribution system for the high-rise building comprises a high voltage incoming line, a high voltage outgoing line, a low voltage power transmission line, an electric appliance, a miniature box transformer and a medium voltage switching station, wherein one end of the medium voltage switching station is connected with the high voltage incoming line, the voltage of the high voltage incoming line is generally 10KV, the other end of the medium voltage switching station is connected with one end of the high voltage outgoing line, and the high voltage outgoing line is also 10KV; one end of the miniature box transformer substation is connected with the other end of the high-voltage outlet wire, and the other end of the miniature box transformer substation is connected with the low-voltage power transmission wire; the medium-voltage switching station plays a role in high-voltage branching in the system, and the voltage corresponding to one group of high-voltage incoming lines is decomposed into a plurality of groups of high-voltage outgoing lines with the same voltage through the medium-voltage switching station and then is connected into the miniature box transformer; the other end of the low-voltage power transmission line is connected with the electric appliance; the miniature box transformer comprises a box body, wherein the box body is a cuboid, the box body comprises a main body, a top cover and a safety door, the main body comprises a high-pressure chamber, a low-pressure chamber and a power transformation chamber, the high-pressure chamber and the power transformation chamber are both closed by the top cover and the safety door, the low-pressure chamber is closed by a control substrate, and the high-pressure chamber and the power transformation chamber are arranged right above the low-pressure chamber side by side and are both arranged adjacent to the low-pressure chamber; a high-voltage control circuit and a high-voltage line access port are arranged in the high-voltage chamber, a transformer is arranged in the transformer chamber, and a distribution chamber is also arranged in the low-voltage chamber; one end of the high-voltage control circuit is connected with a high-voltage outlet through the high-voltage wire access port, and the other end of the high-voltage control circuit is connected with a high-voltage end of the transformer; the lower low-voltage end of the transformer is connected with a distribution room, and the distribution room is connected with external electric appliances through a low-voltage transmission line. The reasonable arrangement of miniature case becomes, compact structure, case becomes the inner space by make full use of, has reduced the wire rod quantity of internal connection simultaneously. The medium-voltage switching station is arranged on the horizontal ground, and the number of the line groups of the high-voltage outgoing lines connected with the medium-voltage switching station is the same as the number of the micro-box-type transformers arranged in the building; the medium-voltage switching station is used for distributing power with the same voltage, and meanwhile, when the miniature box is changed for maintenance, the medium-voltage switching station can be closed, so that electric shock is avoided when the miniature box is changed for maintenance of power personnel, and safety is improved.
According to the invention, the micro box transformer is arranged at different floors in a high-rise building, and the micro box transformer is arranged at vacant positions of different floors of the high-rise building, so that the low-voltage output end of the box transformer is ensured to be closer to a power load, and the power loss in the low-voltage output process is reduced; if the low-voltage transmission line is longer, the voltage at the tail end of the low-voltage transmission line may not meet the requirement of the power load, so that the quality of power supply is poor, the voltage is unstable, and the power load is easily damaged; therefore, the micro-box transformer is arranged in a building, and the risks of electric loss and electric load damage are greatly reduced.
The top cover corresponding to the transformer chamber is provided with the exhaust hole, the area of the exhaust hole accounting for the area of the transformer chamber is not less than 30%, the exhaust hole is ensured to fully radiate the heat of the transformer chamber, the ageing speed of wires in the transformer chamber is reduced, and the service life of the wires is prolonged.
The lower half parts of the safety doors of the high-pressure chamber and the power transformation chamber are also provided with air inlets, the air inlets occupy at least 20% of the area of the corresponding safety door, and the air inlets ensure that sufficient air enters the high-pressure chamber and the power transformation chamber and cool the box body.
According to the invention, the low-voltage chamber is provided with the electric meter and the power distribution control, the electric meter and the power distribution control are embedded and installed on the control substrate, the display part of the electric meter and the control part of the power distribution control are arranged on the outer side of the control substrate, and the power distribution control controls the opening or closing of a circuit through the current or voltage change of the electric meter. The power distribution control is convenient for electrician maintenance or replacement, meter reading personnel to read meter timely and rapidly, and working efficiency is improved.
The intelligent controller is also connected with an external PC (personal computer) through a WIFI (wireless fidelity) signal, related parameters of an ammeter are sent to the PC through the WIFI signal, and the PC controls the start and stop of the power distribution control through remote control of the intelligent controller. The power maintenance personnel or users can timely find out the abnormal condition of the data of each low-voltage transmission line of the distribution room through the PC, timely check the abnormal condition, and can also send out instructions to operate the intelligent controller through the PC, so as to timely prevent further abnormal deterioration or solve the problems of the low-voltage transmission lines.
An air exhaust fan is arranged right below the corresponding position of the exhaust hole, and the air exhaust fan is connected with the top cover.
The inner side of the safety door at the corresponding position of the air inlet is also provided with a porous plate which is connected with the safety door, a funnel-shaped hole is arranged in the thickness direction of the porous plate, the funnel body of the funnel faces the safety door, the outlet of the funnel faces the machine room, and the area of the outlet of the funnel occupies at least 20% of the area of the porous plate. The funnel-shaped holes of the porous plate can enable air outside the box transformer substation to be lower, speed up temperature reduction in the box transformer substation, and form air convection with the exhaust holes, so that rapid temperature reduction in the box transformer substation is further promoted, and service lives of equipment controls in the box transformer substation are prolonged better.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows: the invention adopts the medium-voltage distribution type to supply and distribute power to high-rise buildings, and dispersedly arranges micro-boxes for large-scale buildings and high-rise buildings with larger loads, so that the arrangement of the transformer is as close to the power load as possible, thereby reducing the length of a low-voltage line, and the distance of the low-voltage transmission line to electric equipment is shorter, so that voltage drop and transmission loss are smaller; meanwhile, the miniature box transformer is used, the size is small, the miniature box transformer designs a high-voltage chamber, a transformer chamber and a low-voltage chamber into an up-down structure, and the space of the box transformer is fully and comprehensively used, so that fewer wires are used in the box transformer; meanwhile, the exhaust fan is arranged on the top cover at the top of the transformer room, the porous plate is arranged at the lower half part of the safety door, the box transformer is cooled rapidly by utilizing the cooling effect, the aging speed of wires is slowed down, the service life is prolonged, and the power distribution control is arranged on the outer side of the control substrate, so that the maintenance of electricians or the rapid meter reading of meter reading personnel is facilitated, and the working efficiency is improved. The box has smaller volume, can be placed in a power supply room in a high-rise building, greatly shortens the loss caused by low-voltage power transmission, and ensures that the voltage output from a low-voltage terminal to a user is more stable.
[ description of the drawings ]
Fig. 1 is a schematic layout diagram of a medium voltage distributed power distribution system for use in a high-rise building in accordance with the present invention.
Fig. 2 is a prior art layout schematic.
Fig. 3 is a schematic perspective view of a miniature box transformer in a medium voltage distributed power distribution system for use in a high-rise building according to the present invention.
Fig. 4 is a schematic diagram of the internal component arrangement of fig. 3.
FIG. 5 is a schematic perspective view of a perforated plate according to the present invention.
Fig. 6 is a schematic cross-sectional view of fig. 5 in the thickness direction.
The description of the drawings is as follows: 1-a medium-pressure switching station; 2-1-high voltage incoming line; 2-2-high voltage outgoing lines; 3-miniature box transformer; 4-low voltage power transmission lines; 5-an electric appliance; 6-building; 7-the ground; 8-converting station; 9-a high pressure chamber; 10-a transformer; 11-a low pressure chamber; 12-high voltage line access port; 13-a distribution room; 14-top cover; 15-a safety door; 16-an air inlet hole; 17-exhaust holes; 18-power distribution controls; 19-a control substrate; 20-multi-well plate.
[ detailed description ] of the invention
Referring to fig. 1 to 6, in a preferred embodiment of the present invention, a medium voltage distribution system for use in a high-rise building includes a high voltage incoming line 2-1, a high voltage outgoing line 2-2, a low voltage power transmission line 4, an electrical appliance 5, a micro-box transformer 3, and a medium voltage switching station 1, wherein one end of the medium voltage switching station 1 is connected with the high voltage incoming line 2-1, the voltage of the high voltage incoming line 2-1 is generally 10KV, the other end of the medium voltage switching station 1 is connected with one end of the high voltage outgoing line 2-2, and the high voltage outgoing line 2-2 is also 10KV; one end of the miniature box transformer 3 is connected with the other end of the high-voltage outlet line 2-2, and the other end of the miniature box transformer 3 is connected with the low-voltage power line 4; the high-voltage outgoing lines 2-2 are as many as the miniature box transformer 3, the medium-voltage switching station 1 plays a role in high-voltage branching in the system, and the voltages corresponding to one group of high-voltage incoming lines 2-1 are decomposed into a plurality of groups of high-voltage outgoing lines 2-2 with the same voltage through the medium-voltage switching station 1 and then are connected into the miniature box transformer 3; the other end of the low-voltage power transmission line 4 is connected with the electric appliance 5; the miniature box transformer 3 comprises a box body, wherein the box body is a cuboid, the box body comprises a main body, a top cover 14 and a safety door 15, the main body comprises a high-pressure chamber 9, a low-pressure chamber 11 and a power transformation chamber, the high-pressure chamber 9 and the power transformation chamber are both closed by the top cover 14 and the safety door 15, the low-pressure chamber 11 is closed by a control substrate 19, and the high-pressure chamber 9 and the power transformation chamber are arranged right above the low-pressure chamber 11 side by side and are connected with the low-pressure chamber 11; a high-voltage control circuit and a high-voltage wire access port 12 are arranged in the high-voltage chamber 9, a transformer 10 is arranged in the transformer chamber, and a distribution chamber 13 is also arranged in the low-voltage chamber 9; one end of the high-voltage control circuit is connected with the high-voltage outlet 2-2 through the high-voltage wire access port 12, and the other end of the high-voltage control circuit is connected with the high-voltage end of the transformer 10; the lower low-voltage end of the transformer 10 is connected with a distribution room 13, and the distribution room 13 is connected with an external electric appliance 5 through a low-voltage transmission line 4. The reasonable arrangement of the miniature box transformer 3 has compact structure, the space in the box transformer is fully utilized, and the wire consumption of internal connection is reduced.
Referring to fig. 1 and 2, in the prior art, a power supply and distribution system is a high-voltage inlet 2-1 connected with a miniature box transformer 3, a medium-voltage switching station 1 is not arranged in the middle, and the box transformer is arranged on a horizontal ground, so that the space is occupied, the box transformer needs to be used as a high-voltage protective fence, and an unnoticed person is easily caused to get an electric shock; in addition, the box transformer outlet is connected to a user in a building through a low-voltage power transmission line, and the low-voltage power transmission line 4 is too long, so that the electric energy loss is easily increased, and the voltage quality is unstable. The miniature box transformer 3 is arranged on different floors in the high-rise building 6, and the miniature box transformer 3 is arranged at the vacant positions of the different floors of the high-rise building, so that the low-voltage output end of the box transformer is ensured to be closer to the power load, and the power loss in the low-voltage output process is reduced; if the low-voltage power transmission line is longer, the voltage at the tail end of the low-voltage power transmission line 4 may not meet the requirement of the power load, so that the quality of power supply is poor, the voltage is unstable, and the power load is easy to damage; therefore, the miniature box-type transformer substation 3 is arranged in a building, and the risks of electric loss and electric load damage are greatly reduced.
Referring to fig. 3 and 4, the medium voltage switching station 1 of the present invention is disposed on a horizontal ground, and the number of lines of the high voltage incoming line 2-1 connected to the medium voltage switching station 1 is a group, and the number of lines of the high voltage outgoing line 2-2 connected to the medium voltage switching station 1 is the same as the number of micro-box-type transformers 3 disposed in the building; the medium-voltage switching station is used for distributing power with the same voltage, and meanwhile, when the miniature box transformer is maintained, the medium-voltage switching station 1 can be closed, so that electric shock is avoided when power personnel maintain the miniature box transformer 3, and safety is improved.
Referring to fig. 3, the top cover 14 corresponding to the transformer chamber is provided with the exhaust hole 17, the area of the exhaust hole 17 accounting for the area of the transformer chamber is not less than 30%, the exhaust hole 17 is ensured to radiate the heat of the transformer chamber, the aging speed of the wire in the transformer chamber is reduced, and the service life of the wire is prolonged.
Referring to fig. 3, the lower half parts of the safety doors 15 of the high-voltage chamber 9 and the transformer chamber are further provided with air inlets 16, wherein the air inlets 16 occupy at least 20% of the area of the corresponding safety door 15, so that sufficient air is ensured to enter the high-voltage chamber 9 and the transformer chamber, and the temperature in the box body is reduced.
Referring to fig. 3, the low-voltage chamber 11 of the present invention is provided with an ammeter and a power distribution control 18, the ammeter and the power distribution control 18 are embedded and mounted on a control substrate 19, a display portion of the ammeter and a control portion of the power distribution control 18 are disposed on an outer 19 side of the control substrate, and the power distribution control 18 controls the opening or closing of a circuit through the current or voltage change of the ammeter. The power distribution control 18 is convenient for electrician maintenance or replacement, meter reading personnel to read meter timely and quickly, and working efficiency is improved.
The power distribution room 13 of the miniature box transformer substation 3 is further provided with an intelligent controller, a power supply of the intelligent controller is provided by the power distribution room 13, the intelligent controller is respectively connected with the power distribution control 18 and the ammeter, the intelligent controller is further connected with an external PC through a WIFI signal, relevant parameters of the ammeter are sent to the PC through the WIFI signal, and the PC controls the starting and stopping of the power distribution control 18 through remote control of the intelligent controller. The power maintenance personnel or users can timely find the abnormal condition of the data of each low-voltage transmission line of the distribution room 13 through the PC, timely check the abnormal condition, and can also send instructions to operate the intelligent controller through the PC, so as to timely prevent further abnormal deterioration or solve the problems of the low-voltage transmission lines.
An air exhaust fan is arranged right below the corresponding position of the exhaust hole 17 and connected with the top cover.
Referring to fig. 5 and 6, a porous plate 20 is further disposed inside the safety door 15 at a position corresponding to the air inlet 16, the porous plate 20 is connected to the safety door 15, a funnel-shaped hole is disposed in the thickness direction of the porous plate, the funnel body of the funnel faces the safety door, the outlet of the funnel faces the machine room, and the area of the outlet of the funnel occupies at least 20% of the area of the porous plate 20. The funnel-shaped holes of the porous plate 20 can enable air outside the box transformer substation to be lower, speed up temperature reduction in the box transformer substation, and meanwhile form air convection with the exhaust holes 17, so that rapid temperature reduction in the box transformer substation is further promoted, and the service life of each equipment control in the box transformer substation is prolonged better.
And (3) effect verification:
the embodiment of the invention is applied to Shenzhen navigation building, and optimizes and compares the energy-saving effect on the power supply scheme of the building.
Project basic conditions:
1. the 7 th to 48 th floors of the building are 42 floors, the area is 8.75 kilo-square meters, and the total load is 4860kVA.
2. The load distribution of the building was 0.056 kVA/square meter, 115.71 kVA/floor calculated on the above floors.
| Scheme comparison item | Conventional power supply scheme | Optimizing unit scheme | Reduction of the ratio | Correction ratio |
| Distribution total capacity | 5000 | 5000 | -- | |
| Distribution transformer capacity (kVA) | 1250*4 | 500*10 | -- | |
| Low-voltage distribution loop (Hui) | 84 | 84 | -- | |
| High-voltage power distribution cabinet (table) | 8 | 4 | 50％ | |
| Low-voltage power distribution cabinet (table) | 24 | -- | -- | |
| Floor area (square meter) | 36.4 | 30 | 17.6％ | |
| Minimum electric room area (square meter) | 150 | 120 | 20.0％ | 15％ |
| High-voltage cable (Wanyuan) | 0 | 882 | -- | |
| Low-voltage cable (Wanyuan) | 18522 | 1764 | 90.5％ | |
| Investment of high-low voltage cabinet (Wanyuan) | 218 | 180 | 17.4％ | 20％ |
| Cable investment (Wanyuan) | 117 | 17 | 85.5％ | 60％ |
| Investment aggregate (Wanyuan) | 335 | 197 | 41.2％ | 40％ |
| Cable loss estimation (kW) | 28.96 | 3.06 | 89.4％ | 70％ |
| Transformer loss estimation (kW) | 34.15 | 44.08 | -29.1％ | |
| Total loss total (kW) | 63.11 | 47.14 | 25.3％ | 30％ |
| Annual energy consumption (kWh) | 45.44 | 33.94 | 25.3％ | |
| Annual power consumption electric charge (Wanyuan) | 29.5 | 22.1 | 25.3％ | |
| Electricity consumption and electricity charge in life cycle | 886.0 | 661.9 | 25.3％ | 224.11 |
According to the table, the invention saves more than 70% of cable investment and more than 40% of equipment purchasing investment for the Shenzhen medium-sized building. And the power grid loss is reduced by 25-30%, and the annual energy saving and electricity saving cost is more than 7.5 ten thousand yuan. Meanwhile, it is expected that 225 ten thousand yuan of electricity charge can be saved in the life cycle of 30 years.
Claims (7)
1. The medium-voltage distributed power supply and distribution system for the high-rise building comprises a high-voltage incoming line (2-1), a high-voltage outgoing line (2-2), a low-voltage power transmission line (4), an electric appliance (5), a miniature box transformer (3) and a medium-voltage switching station (1), and is characterized in that one end of the medium-voltage switching station (1) is connected with the high-voltage incoming line (2-1), and the other end of the medium-voltage switching station is connected with the high-voltage outgoing line (2-2); one end of the miniature box transformer (3) is connected with the high-voltage outlet wire (2-2), and the other end of the miniature box transformer is connected with the low-voltage power transmission wire (4); the other end of the low-voltage power transmission line (4) is connected with the electric appliance (5); the miniature box transformer (3) is arranged on different floors in a building (6), the medium-voltage switching station (1) is arranged on the horizontal ground, and the number of groups of high-voltage outgoing lines (2-2) connected with the medium-voltage switching station (1) is the same as the number of the miniature box transformer (3) arranged in the building (6); the miniature box transformer (3) comprises a box body, the box body is a cuboid, the box body comprises a main body, a top cover (14) and a safety door (15), the main body comprises a high-voltage chamber (9), a low-voltage chamber (11) and a transformer chamber, the high-voltage chamber (9) and the transformer chamber are both closed by the top cover (14) and the safety door (15), the low-voltage chamber (11) is closed by a control substrate (19), and the high-voltage chamber (9) and the transformer chamber are arranged above the low-voltage chamber (11) side by side and are all arranged adjacent to the low-voltage chamber (11); a high-voltage control circuit and a high-voltage wire access port (12) are arranged in the high-voltage chamber (9), a transformer (10) is arranged in the transformer chamber, and a power distribution chamber (13) is also arranged in the low-voltage chamber (11); one end of the high-voltage control circuit is connected with a high-voltage outlet (2-2) through the high-voltage wire access port (12), and the other end of the high-voltage control circuit is connected with a high-voltage end of the transformer (10); the lower low-voltage end of the transformer (10) is connected with a distribution room (13), and the distribution room (13) is connected with an external electric appliance (5) through a low-voltage transmission line (4).
2. The medium voltage distributed power supply and distribution system for high-rise buildings according to claim 1, wherein the top cover (14) corresponding to the transformer room is provided with an exhaust hole (17), and the exhaust hole (17) occupies not less than 30% of the area of the transformer room.
3. The medium voltage distributed power supply and distribution system for high-rise buildings according to claim 1, wherein the lower half parts of the safety doors (15) of the high-voltage chamber (9) and the power transformation chamber are further provided with air inlets (16), and the area of the air inlets (16) is not less than 20% of the area of the corresponding safety door (15).
4. The medium-voltage distributed power supply and distribution system for the high-rise building according to claim 1, wherein the low-voltage room (11) is provided with an ammeter and a power distribution control (18), the ammeter and the power distribution control (18) are embedded and installed on a control substrate (19), a display part of the ammeter and a control part of the power distribution control (18) are arranged on the outer side of the control substrate (19), and the power distribution control (18) controls the opening or closing of a circuit through the current or voltage change of the ammeter.
5. The medium voltage distributed power supply and distribution system for high-rise buildings according to claim 1, wherein the power distribution room (13) of the miniature transformer substation (3) is further provided with an intelligent controller, the intelligent controller is respectively connected with a power distribution control (18) and an ammeter, the intelligent controller is connected with an external PC (personal computer) through a WIFI (wireless fidelity) signal, related parameters of an ammeter are sent to the PC through the WIFI signal, and the PC controls the start and stop of the power distribution control (18) through remote control of the intelligent controller.
6. The medium voltage distributed power supply and distribution system for high-rise buildings according to claim 2, wherein an air exhaust fan is arranged right below the corresponding position of the air exhaust hole (17), and the air exhaust fan is connected with the top cover (14).
7. A medium voltage distributed power supply and distribution system for use in high-rise buildings according to claim 3, wherein the inner side of the safety door (15) at the corresponding position of the air inlet hole (16) is further provided with a porous plate (20), the porous plate (20) is connected with the safety door (15), a funnel-shaped hole is arranged in the thickness direction of the porous plate (20), the funnel body of the funnel faces the safety door (15), the outlet of the funnel faces the machine room, and the outlet area of the funnel occupies at least 20% of the area of the porous plate (20).
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|---|---|---|---|---|
| CN2773958Y (en) * | 2004-12-13 | 2006-04-19 | 西安森宝电气工程有限公司 | Boxed variable-capacity substation |
| CN201674134U (en) * | 2010-04-26 | 2010-12-15 | 南京业基电气设备有限公司 | Compact box type substation |
| CN103178451A (en) * | 2013-04-23 | 2013-06-26 | 山东中奥电力设备有限公司 | Miniature power grid terminal transformation and distribution system |
| CN204156596U (en) * | 2014-03-26 | 2015-02-11 | 湖北省电力勘测设计院 | A kind of transforming plant DC power supply installed nearby |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8582330B2 (en) * | 2009-01-23 | 2013-11-12 | Lockheed Martin Corporation | High voltage and frequency distributed power system |
| US8340833B2 (en) * | 2010-03-31 | 2012-12-25 | General Electric Company | Control distribution transformer and method of making same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2773958Y (en) * | 2004-12-13 | 2006-04-19 | 西安森宝电气工程有限公司 | Boxed variable-capacity substation |
| CN201674134U (en) * | 2010-04-26 | 2010-12-15 | 南京业基电气设备有限公司 | Compact box type substation |
| CN103178451A (en) * | 2013-04-23 | 2013-06-26 | 山东中奥电力设备有限公司 | Miniature power grid terminal transformation and distribution system |
| CN204156596U (en) * | 2014-03-26 | 2015-02-11 | 湖北省电力勘测设计院 | A kind of transforming plant DC power supply installed nearby |
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