CN203553715U - Power supply device for voltage transformer - Google Patents
Power supply device for voltage transformer Download PDFInfo
- Publication number
- CN203553715U CN203553715U CN201320607176.4U CN201320607176U CN203553715U CN 203553715 U CN203553715 U CN 203553715U CN 201320607176 U CN201320607176 U CN 201320607176U CN 203553715 U CN203553715 U CN 203553715U
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- China
- Prior art keywords
- voltage transformer
- casing
- voltage
- load switch
- supply installation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a power supply device for a voltage transformer. SF6 gas is field in a sealed box of the device. A high-voltage cable support column disposed outside the box is connected with an input terminal of the voltage transformer through a load switch and a high-voltage current-limiting fuse which are disposed in the box. An output terminal of the voltage transformer is connected with a low-voltage cable support column disposed outside the box. The power supply device has the advantages that the SF6 gas is used as insulating medium, the device is suitable for continuous full-working-condition alternating-current power supply under various weathers, safe and reliable, and influence of external factors on the power supply device is reduced.
Description
Technical field
The utility model relates to the voltage transformer electric supply installation that is adapted to the uninterrupted full operating mode Alternating Current Power Supply under various weather, relates in particular to one SF
6gas is as 10KV/0.22KV or the 10KV/0.1KV voltage transformer electric supply installation structure of dielectric.
Background technology
In open urban 10KV supplying power allocation, for guaranteeing the reliability of power supply plan, stability, promptness, often adopts ring network power supply pattern, and one group of 10KV ring main unit station is set in certain location.
Ring main unit need to be own with vacuum circuit-breaker because of function, and on-load switch etc. are closed, turned parts, need motor drive mechanism to operate, and these mechanisms need LVPS, as 220V, 100V, can only install voltage transformer cabinet additional at each station and realize.
In general, the manufacture of outdoor 10KV voltage transformer cabinet, installation, acceptance criteria adopt air type insulation mode, and as Fig. 1,2, failure rate is very large, and rate of failure is large, are large problems always, are difficult to solve.Be mainly manifested in following a few point defect:
1, the impact of the temperature difference; Product during use, during temperature generation larger difference, can produce condensation in voltage transformer cabinet, and the piece surface in cabinet, with the globule, causes interior electric discharge or the failed shorted of occurring of cabinet.
2, the impact in rainy season; Rainy day, in air, contain moisture, air humidity is very large, because " leakage distance " in high voltage electric appliance has strict requirement to air humidity, when humidity is larger, can produce between phase and phase or relative ground circuit, causes voltage transformer cabinet fault.Especially at plum rain season, the most serious.
3, the impact of koniology; Because product is in roadside, air-insulated product is afraid of dust granule most, and these particles can be attached to component surface, and phenomenon occurs to cause electrified body " to climb arc ", until electric discharge.
4, the impact of heavy rain and urban sewage ability; In Shelter in South China Cities, all can rain in torrents every year, if urban sewage scarce capacity, road ponding goes up, and will flood and air type voltage transformer cabinet,, even there is electric shock accidents in cabinet internal short-circuit.
Utility model content
Technical problem to be solved in the utility model is that realization is a kind of safe and reliable, is subject to extraneous factor to affect little voltage transformer electric supply installation.
To achieve these goals, the technical solution adopted in the utility model is: a kind of voltage transformer electric supply installation, is filled with SF in device seal case
6gas, is arranged on high-tension cable pillar outside described casing on-load switch, the high-voltage and current-limitation fuse in being arranged on casing and is connected with voltage transformer input, and the output of described voltage transformer is connected with the low-voltage cable pillar being arranged on outside casing.
Described high-voltage and current-limitation fuse is installed in fuse unit, and described fuse unit is fixed on casing by fuse unit pressing plate, and described fuse unit pressing plate is provided with plug.
Described on-load switch is provided with the load switch operation mechanism coordinating with it, and described load switch operation mechanism is installed on outside casing.
Described high-tension cable pillar is placed in casing top, and described low-voltage cable pillar is placed in casing bottom.
Described voltage transformer is provided with explosion-proof valve.
Described casing is provided with installing hole, in to casing, pours SF
6during gas, inflation valve seat is installed on installing hole, when inflating in casing when complete, air gauge is installed on installing hole.
The utility model has the advantage of that this device has the following advantages: 1, it adopts a kind of insulating gas SF reliably
6as complex media, dwindled leakage distance and the creepage distance of product electrified body.2, all electrification in high voltage parts are all sealed in an air chamber, owing to there is no air in air chamber, also enter and do not come with the air of time outside, and it is not subject to the impacts such as air humidity, dust.While 3, moving, with bus tie, electrical network 10kV high pressure is introduced, realized low-voltage output, meet on-the-spot electricity consumption needs.4, can be placed in outside air chamber by functional unit, be convenient to work on the spot and maintenance, the inside and outside all connectors of air chamber and driving member are all by high-strength sealing circle.5, the protection of voltage transformer adopts XRNT current limiting fuse, and on-load switch is passed through in the control of voltage transformer.6, product casing adopts 304 stainless steels NC laser welding to form, and antiseptic power is strong, and magnetic field is even, good heat dissipation.7, product degree of protection is high, and anti-heavy rain can be strong.
Accompanying drawing explanation
Below the mark in content and figure that in the utility model specification, every width accompanying drawing is expressed is briefly described:
Fig. 1,2 is the voltage transformer electric supply installation structural representation using at present;
The voltage transformer electric supply installation structural representation that Fig. 3,4 is this patent;
Mark in above-mentioned figure is: 1, control room; 2, bus-bar room; 3, family of power and influence's lock support; 4, block of valve device; 5, hoisting board; 6, isolating switch; 7, operating axis block of valve mechanism; 8, voltage transformer; 9, fusible core support; 10, door handle; 11, lightning arrester; 12, dividing plate; 13, observation window; 14, inflation valve seat; 15, load switch operation mechanism; 16, casing reinforcement; 17, on-load switch; 18, fuse unit; 19, fuse unit pressing plate; 20, plug; 21, low-voltage cable pillar; 22, high-tension cable pillar; 23, SF
6gas; 24, explosion-proof valve.
Embodiment
Referring to Fig. 3,4 known, voltage transformer electric supply installation is provided with the casing of a sealing, and casing is filled with SF in casing
6gas 23, utilizes SF
6 gas 23 insulate, high-tension cable pillar 22 is placed in casing top, low-voltage cable pillar 21 is placed in casing bottom, high-tension cable pillar 22 connects 10KV high pressure, its on-load switch 17, high-voltage and current-limitation fuse in being arranged on casing is connected with voltage transformer 8 inputs, low-voltage cable pillar 21 is connected with the output of voltage transformer 8, and voltage transformer 8 major functions are that voltage is changed from high to low, and voltage transformer 8 is also provided with explosion-proof valve 24.
On-load switch 17 is control assemblies of power supply turnover, and while carrying out disjunction due to these parts, input work is very large, must realize with load switch operation mechanism 15, and load switch operation mechanism 15 is installed on outside casing.
The high-voltage and current-limitation fuse of protection voltage transformer 8 use is placed in fuse unit 18, and fuse unit 18 is fixed on casing by fuse unit pressing plate 19, and fuse unit pressing plate 19 is provided with plug 20 and seals, and such setting can be at removal SF not
6in the situation of gas 23, carry out the replacing of high-voltage and current-limitation fuse.The effect of high-voltage and current-limitation fuse (XRNT) is that XRNT striker is gone out when a certain of voltage transformer 8 discharge currents exceed certain value, by machinery and electrical equipment interlocking, cuts off voltage transformer 8 high voltage supplies, plays a protective role.
Low-voltage cable pillar 21 and high-tension cable pillar 22 are the inside and outside critical components of connect box, use by the insulating material of electrical equipment requirement and make, and conventionally use epoxy resin.
Casing is provided with installing hole, in to casing, pours SF
6during gas 23, inflation valve seat 14 is installed on installing hole, inflation valve seat 14 is to make the rear inner air that first pumps for product; When in casing, inflate complete reach certain numerical value after time, air gauge is installed on installing hole, air gauge shows exactly internal gas pressure and can realize on-site-inspection and control far away.
Casing is processed with stainless steel material, conventionally adopt 304 stainless steels, by anticorrosion anti-antirust hermetically sealed, steel adopt NC laser cutting to process various holes and profile, cutting section is smooth, and machining accuracy is high, through moulding and soldering and sealing after loading onto inner various components and parts, numerical control bonding machine is used in soldering and sealing, and smooth welding joint intensity is high.Casing internal exchange conductance electric material is used T2 high-quality copper material, and specification meets current requirements, on-load switch 17 dynamic/static contacts Kufil material.
Concrete mounting process is as follows: before stainless steel casing does not seal, by designing requirement, install voltage transformer 8, fuse unit, on-load switch 17; Make and connect copper bar and assemble; Carry out earth connection, with external interface line; Clean internal health; After air chamber welding joint sealing, check sealing ring quality, installing cables pillar.Rush nitrogen and check weldquality, have or not gas leak phenomenon; Load switch operation mechanism 15 and air gauge are installed; Casing is vacuumized, rush SF
6gas; Check electrical equipment and mechanical performance.
This device and high-voltage ring main unit method of attachment: product together during case ring main unit jointly use, product high-tension cable pillar 22 is connected to ring main unit high voltage interface and can be obtained 10KV high voltage source by tangibly bus tie.
The device profile of this patent design is compared with air type, and because air type product width is because the restriction that is subject to leakage distance and creepage distance can not be less than 650mm, and patent device width only needs 400mm, saves place, is convenient to transportation and installs.Meanwhile, this device SF
6gas isolated theory is in conjunction with the feature of stainless steel material and use modern crafts means to solve rugged environment and pollute the problem to Supply Security and reliability, totally-enclosed exactly all high-voltage charged bodies being concentrated in a container of device, the severe degree of the outside weather of product does not affect Supply Security, improves product reliability.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection range of the present utility model.
Claims (6)
1. voltage transformer electric supply installation, is characterized in that: in device seal case, be filled with SF
6gas (23), be arranged on high-tension cable pillar (22) outside described casing on-load switch (17), the high-voltage and current-limitation fuse in being arranged on casing and be connected with voltage transformer (8) input, the output of described voltage transformer (8) is connected with the low-voltage cable pillar (21) being arranged on outside casing.
2. voltage transformer electric supply installation according to claim 1, it is characterized in that: described high-voltage and current-limitation fuse is installed in fuse unit (18), described fuse unit (18) is fixed on casing by fuse unit pressing plate (19), and described fuse unit pressing plate (19) is provided with plug (20).
3. voltage transformer electric supply installation according to claim 2, is characterized in that: described on-load switch (17) is provided with the load switch operation mechanism (15) coordinating with it, and described load switch operation mechanism (15) is installed on outside casing.
4. voltage transformer electric supply installation according to claim 3, is characterized in that: described high-tension cable pillar (22) is placed in casing top, and described low-voltage cable pillar (21) is placed in casing bottom.
5. voltage transformer electric supply installation according to claim 4, is characterized in that: described voltage transformer (8) is provided with explosion-proof valve.
6. voltage transformer electric supply installation according to claim 5, is characterized in that: described casing is provided with installing hole, in to casing, pours SF
6during gas (23), inflation valve seat (14) is installed on installing hole, when inflating in casing when complete, air gauge is installed on installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607176.4U CN203553715U (en) | 2013-09-29 | 2013-09-29 | Power supply device for voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607176.4U CN203553715U (en) | 2013-09-29 | 2013-09-29 | Power supply device for voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553715U true CN203553715U (en) | 2014-04-16 |
Family
ID=50471784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320607176.4U Expired - Lifetime CN203553715U (en) | 2013-09-29 | 2013-09-29 | Power supply device for voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203553715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545744A (en) * | 2013-09-29 | 2014-01-29 | 国家电网公司 | Power supply device for voltage transformer |
-
2013
- 2013-09-29 CN CN201320607176.4U patent/CN203553715U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545744A (en) * | 2013-09-29 | 2014-01-29 | 国家电网公司 | Power supply device for voltage transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |