CN201956594U - High-low-high power transmission and distribution box type switch equipment - Google Patents
High-low-high power transmission and distribution box type switch equipment Download PDFInfo
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- CN201956594U CN201956594U CN2011200105880U CN201120010588U CN201956594U CN 201956594 U CN201956594 U CN 201956594U CN 2011200105880 U CN2011200105880 U CN 2011200105880U CN 201120010588 U CN201120010588 U CN 201120010588U CN 201956594 U CN201956594 U CN 201956594U
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Abstract
The utility model relates to box type variable-frequency electric set equipment, in particular to high-low-high power transmission and distribution box type switch equipment, which comprises an equipment box body, wherein three completely isolated separation chambers are arranged in the equipment box body, the three separation chambers are respectively an input isolation transformer chamber, a low-voltage variable-frequency control chamber and an output isolation transformer chamber, a 10kV/0.4KV input transformer is arranged in the input isolation transformer chamber, an SP30 low-voltage frequency converter with the starting frequency being 5Hz and the output operation frequency lower limit being 25Hz is arranged in the low-voltage variable-frequency control chamber, and a 380 to 1800V output transformer is arranged in the output isolation transformer chamber. The equipment belongs to mobile power transmission and distribution equipment, can be used in fixed places, can also be used as emergency equipment, is particularly suitable for being used for natural disaster treatment, mine water seepage treatment, national defense war preparation and the like and has the advantages that the structure is novel, the power supply and distribution are safe and stable, the performance is stable, the service life is at least more than 10 years, and the like.
Description
Technical field
The utility model relates to the electric complete set of equipments of box frequency conversion, specifically is the box switchgears of the high power transmission and distribution of a kind of height.
Background technology
At present, outdoor still extensively employing " primitiveness " is for the distribution structure mode for distribution (power) system, and it exists as undesirable elements such as power consumption, consumptive material, consumption (people) power and the inclined to one side ends of coefficient of safety, and the concrete condition summary has following several aspect:
1. in confession distribution (power) system of the open-air oil well pump in oil field, all use medium voltage frequency converter at present, it is bigger to consume energy, and the fail safe of voltage a lot of problems occurred really with stability in actual application.
2. supplying in distribution (power) system of mine (for example colliery) groundwater abstraction all adopts " primitiveness " open air to set up (10KV) transformer mode, the open-air oil well pump in the similar oil field that has problems at present.
3. the comprehensive defective used of the said equipment: the one, be not easy to move and use, the 2nd, set up with installation period for distribution (power) system when new projects go into operation long, the 3rd, expose electric equipment rapid wear, shortage fail safe etc.
Summary of the invention
The utility model is intended to solve the problem that above-mentioned " primitiveness " exists for the distribution structure mode, and a kind of box switchgear of the high power transmission and distribution of height with advantages such as integral body, safety, energy-saving and environmental protection, removable installations is provided.
The technical scheme that the described problem that solves the utility model adopts is:
The box switchgear of the high power transmission and distribution of a kind of height, comprise equipment box, three compartment that isolate fully are set in this equipment box, described three compartment are respectively input isolating transformer chamber, low-voltage variable frequency control room and output isolation transformer chamber, the indoor 10KV/0.4KV input transformer that is equipped with of this input isolating transformer, being equipped with in this low-voltage variable frequency control room and opening the merit frequency is the SP30 low voltage frequency converter that is limited to 25HZ under 5HZ, the output running frequency, the indoor 380-1800V output transformer that is equipped with of this output isolation transformer.
Its end of incoming cables of described 10KV/0.4KV input transformer is provided with the input terminal of dual mode, and a kind of terminal is connected with the external electrical network power supply into and out of the line cabinet by two high pressure, and another kind of terminal directly is connected with the external electrical network power supply; Its outlet terminal is connected with the input terminal of SP30 low voltage frequency converter with input reactance device TA by circuit breaker Q F, and the outlet terminal of SP30 low voltage frequency converter is connected with the input terminal of out put reactor with the 380-1800V output transformer by filtering capacitor.
Adopt the wall-hanging structure that low-tension distribution box is installed in the described low-voltage variable frequency control room; install the low voltage component that is useful on for low voltage frequency converter operation, protection, operation in this low-tension distribution box concentratedly, the panel of low-tension distribution box is provided with operation of equipment operation button and indicative signal lamp.
The casing top and bottom of described input isolating transformer chamber and output isolation transformer chamber is provided with the air channel, import/export that can close/open.
Compared with prior art, the beneficial effects of the utility model are:
The high power transmission and distribution scheme of height is that 3 Φ * 10KV or 3 Φ * 6.0KV mesohigh power electricity are become 3 Φ * 380V(and do not contain transformer) low-voltage-powered, for low voltage frequency converter provides power supply, the low voltage frequency converter lead-out terminal connects output transformer, transformer satisfies the user to end voltage (as motor) demand through boosting laggard line output.And traditional high power transmission and distribution scheme is to adopt the input isolating transformer that high pressure is divided into a plurality of low pressure taps, give power cell (as medium voltage frequency converter) power supply, directly come drive motors, general system more than 3000V uses, " middle pressure " (690～2300V) power models that adopt are series model, and its output harmonic wave and dv/dt are bigger, and all pressure and coherence request are relatively poor, thereby failure rate is very high, and the insulation to motor and cable simultaneously all has damage.Therefore, two kinds of schemes are compared, and height high power transmission and distribution scheme energy-saving and environmental protection and comprehensive safety improve greatly.
On the other hand, because the utility model belongs to portable power transmission and distribution (power and distribution) equipment, not only can use at fixed-site, and as emergency stock, especially suitable to handling natural calamity (floods, earthquake etc.), the mine infiltration, and national defence war preparedness etc. (the open-air power supply of force modernization) is used, compare for the distribution structure mode with existing " primitiveness " is outdoor, it is novel to have structure, for the distribution safety and stability, advantages such as dependable performance, can satisfy the project scene fully supplies equipment, the requirement of distribution, have vast market space more than at least 10 years useful life.
Description of drawings
Fig. 1 is a profile schematic diagram of the present utility model.
Fig. 2 is that inner plane of the present utility model is arranged schematic diagram.
Fig. 3 is high and low for the integrated protection type, high (containing high and low) box switchgear supplies, power distribution circuit figure.
Fig. 4 is high and low for general protection type, high (containing high and low) box switchgear supplies, power distribution circuit figure.
Fig. 5 is that low, high integrated protection molding box formula switchgear supplies, power distribution circuit figure.
Among the figure: equipment box 1, input isolating transformer chamber 2, low-voltage variable frequency control room 3, output isolation transformer chamber 4, air channel, import/export 5,10KV/0.4KV input transformer 6, SP30 low voltage frequency converter 7, low-tension distribution box 8,380-1800V output transformer 9, high pressure is into and out of line cabinet 10, filtering capacitor 11, out put reactor 12.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Referring to Fig. 1, Fig. 2, its equipment box 1 of the box switchgear of the high power transmission and distribution of this height becomes structure based on European case, in establish three compartment that isolate fully, promptly import isolating transformer chamber 2, low-voltage variable frequency control room 3 and output isolation transformer chamber 4.Three independently compartment adopt the double-opening type clamshell doors so that the maintenance of personnel's safety operation and equipment, the compartment door employing padlock type mode of input isolating transformer chamber 2 and output isolation transformer chamber 4 is to guarantee independence (special messenger) maintenance; The straight-opening type door latch structure is adopted in low-voltage variable frequency control room 3, so that regular operation and maintenance; The chamber high spatial of transformer room is bigger, is convenient to the heat radiation during the equipment operation; Be the normal safe operation of assurance equipment, the top and bottom of equipment box 1 all leaves the air channel, import/export 5 that can close/open.
In this input isolating transformer chamber 2 10KV/0.4KV input transformer 5 is housed; Being equipped with in this low-voltage variable frequency control room 3 and opening the merit frequency is the SP30 low voltage frequency converter 7 that is limited to 25HZ under 5HZ, the output running frequency, and adopt the wall-hanging structure that low-tension distribution box 8 is installed, install the low voltage component that is useful on for low voltage frequency converter operation, protection, operation in this low-tension distribution box 8 concentratedly, the panel of low-tension distribution box 8 is provided with operation of equipment operation button and indicative signal lamp; These output isolation transformer 4 indoor 380-1800V output transformers 9 that are equipped with.
SP30 low voltage frequency converter 7 independently is installed in this low-voltage variable frequency control room 3, and keeps original ventilating system, helps heat radiation and ventilation in its running.Original cooling system (forced air cooling is according to the watt level setting), i.e. blower fan and air outlet, minimum is 2, mostly is 4 most, is arranged at the top of left and right and rear side respectively.Be reserved with 400V/230V in this low-voltage variable frequency control room 3 and insert power supply, be equipped with in install an air-conditioner, apparatus such as computer.
This low-tension distribution box 8 adopts the wall-hanging structure, is convenient to install, operates, keeps in repair and upgrades, and can greatly reduce failure rate, improves usage ratio of equipment and interchangeability; Operation of equipment operation button and indicative signal lamp are arranged on the panel of low-tension distribution box 8, can prevent the unsafe factor that external misoperation brings.
Equipment box 1 adopts metal material to make, and except that making necessary surface treatment (pickling etc.), the outside weatherproof ocean lacquer that adopts is to guarantee the useful life of equipment.
Referring to Fig. 3, what Fig. 3 provided is that a kind of integrated protection type of the present utility model is high and low, high (containing high and low) box switchgear supplies, the power distribution circuit structure.Be meant in the equipment at 10KV/0.4KV input transformer 6, increase by two high pressure into and out of line cabinet 10,10KV/0.4KV the input terminal of input transformer 6 is connected with the external electrical network power supply into and out of line cabinet 10 by two high pressure, its outlet terminal is connected with the input terminal of SP30 low voltage frequency converter with input reactance device TA by circuit breaker Q F, and the outlet terminal of SP30 low voltage frequency converter is connected with the input terminal of out put reactor 12 with the 380-1800V output transformer by filtering capacitor 11.High and low, high (containing high and low) the box switchgear (quick-break, fusing etc.) except that having strengthened the integrated protection function of this integrated protection type; high pressure can cut off the power supply that whole case becomes into and out of the vacuum load switch in the line cabinet; make system power supply safety and reliability, operation and maintenance are more convenient.
Referring to Fig. 4; what Fig. 4 provided is that a kind of general protection type of the present utility model is high and low, high (containing high and low) box switchgear supplies, the power distribution circuit structure; the input terminal that is meant 10KV/0.4KV input transformer 6 in the equipment directly is connected with the external electrical network power supply; its outlet terminal is connected with the input terminal of SP30 low voltage frequency converter with input reactance device TA by circuit breaker Q F, and the outlet terminal of SP30 low voltage frequency converter is connected with the input terminal of out put reactor 12 with the 380-1800V output transformer by filtering capacitor 11.High and low, high (containing high and low) the box switchgear of this general protection type is to only limit to provide fuse a kind of protected mode; the existing protection that other then depends on electric network source and is provided; the original protected mode of SP30 low voltage frequency converter 7 power supplys is constant, and all kinds of protections of 380-1800V output transformer 9 derive from the integrated protection function of frequency converter.
Referring to Fig. 5; what Fig. 5 provided is a special case of the present utility model; belong to low, high integrated protection molding box formula switchgear; it is to have possessed under the situation of 10KV/0.4KV power supply (and having comprehensive power supply and protective capability) at the project scene; according to high and low, high integrated protection type design, the incoming power equipment that has omitted among Fig. 3, Fig. 4 is 10KV/0.4KV input transformer 6.
Claims (4)
1. box switchgear of the high power transmission and distribution of height, establish the equipment box of three compartment that isolate fully in comprising, it is characterized in that, described three compartment are respectively input isolating transformer chamber, low-voltage variable frequency control room and output isolation transformer chamber, the indoor 10KV/0.4KV input transformer that is equipped with of this input isolating transformer, being equipped with in this low-voltage variable frequency control room and opening the merit frequency is the SP30 low voltage frequency converter that is limited to 25HZ under 5HZ, the output running frequency, the indoor output transformer that output 380-1800V high-tension electricity is housed of this output isolation transformer.
2. the box switchgear of the high power transmission and distribution of height according to claim 1, it is characterized in that, its end of incoming cables of described 10KV/0.4KV input transformer is provided with the input terminal of dual mode, a kind of terminal is connected with the external electrical network power supply into and out of the line cabinet by two high pressure, and another kind of terminal directly is connected with the external electrical network power supply; Its outlet terminal is connected with the input terminal of SP30 low voltage frequency converter with input reactance device TA by circuit breaker Q F, and the outlet terminal of SP30 low voltage frequency converter is connected with the input terminal of out put reactor with the 380-1800V output transformer by filtering capacitor.
3. the box switchgear of the high power transmission and distribution of height according to claim 1; it is characterized in that; adopt the wall-hanging structure that low-tension distribution box is installed in the described low-voltage variable frequency control room; install the low voltage component that is useful on for low voltage frequency converter operation, protection, operation in this low-tension distribution box concentratedly, the panel of low-tension distribution box is provided with operation of equipment operation button and indicative signal lamp.
4. the box switchgear of the high power transmission and distribution of height according to claim 1 is characterized in that the casing top and bottom of described input isolating transformer chamber and output isolation transformer chamber is provided with the air channel, import/export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200105880U CN201956594U (en) | 2011-01-14 | 2011-01-14 | High-low-high power transmission and distribution box type switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200105880U CN201956594U (en) | 2011-01-14 | 2011-01-14 | High-low-high power transmission and distribution box type switch equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201956594U true CN201956594U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200105880U Expired - Fee Related CN201956594U (en) | 2011-01-14 | 2011-01-14 | High-low-high power transmission and distribution box type switch equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201956594U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136687A (en) * | 2011-01-14 | 2011-07-27 | 唐山斯托德电气设备有限公司 | High-low-high power transmission and distribution box type switchgear |
-
2011
- 2011-01-14 CN CN2011200105880U patent/CN201956594U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136687A (en) * | 2011-01-14 | 2011-07-27 | 唐山斯托德电气设备有限公司 | High-low-high power transmission and distribution box type switchgear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20160114 |