CN201450257U - Box-type interconnection transformer substation for reducing 20kV/10kV to 0.4kV - Google Patents
Box-type interconnection transformer substation for reducing 20kV/10kV to 0.4kV Download PDFInfo
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- CN201450257U CN201450257U CN 200920043968 CN200920043968U CN201450257U CN 201450257 U CN201450257 U CN 201450257U CN 200920043968 CN200920043968 CN 200920043968 CN 200920043968 U CN200920043968 U CN 200920043968U CN 201450257 U CN201450257 U CN 201450257U
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- 239000003990 capacitor Substances 0.000 claims description 15
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000001012 protector Effects 0.000 abstract 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The utility model discloses a box-type interconnection transformer substation for reducing 20kV/10kV to 0.4kV; a high-voltage chamber (2) is a 20kV high-voltage chamber or a 10kV high-voltage chamber, a transformer room (4) of a step-down transformer (5) is arranged between the high-voltage chamber (2) and a 0.4kV low-voltage chamber (3), the primary end of the step-down transformer (5) is provided with a 20kV input tap and a 10kV input tap, a 20kV line incoming end or a 10kV line incoming end (6), a bus bar I (7), a switch I (8) and a fuse protector (9) are arranged in the high-voltage chamber (2), the 20kV line incoming end or the 10kV line incoming end (6) is connected with the input end of the switch I (8) by an incoming cable (10) and the bus bar I (7), the output end of the switch I (8) is connected with the input end of the fuse protector (9), and the output end of the fuse protector (9) is connected with the primary end of the step-down transformer (5).
Description
Technical field
The utility model relates to the box contact transformer station that 0.4kV falls in a kind of 20kV/10kV.
Background technology
Along with developing rapidly of power grid construction, present many areas begin to build the electrical network of 20kV, but the electrical network of present 20kV is the newly-built 0.4kV user by the 10kV mains supply, need to build again the 20kV grid equipment again at construction 20kV electrical network, so not only need overlapping investment, the use cost height, and cause unnecessary waste to power equipment.
Summary of the invention
The box contact transformer station that the utility model provides a kind of 20kV/10kV to fall 0.4kV, it not only invests little, and cost is low, avoids overlapping investment, and can improve the power supply capacity and the adaptability of electric power system.
The utility model has adopted following technical scheme: the box contact transformer station of 0.4kV falls in a kind of 20kV/10kV, it comprises casing, be provided with hyperbaric chamber and 0.4kV low-pressure chamber in the described casing, the hyperbaric chamber is 20kV hyperbaric chamber or 10kV hyperbaric chamber, between hyperbaric chamber and 0.4kV low-pressure chamber, be provided with the transformer room, be provided with step-down transformer in the transformer room, the neutral ground of step-down transformer, the primary side of step-down transformer is provided with 20kV input tap and 10kV input tap, 20kV end of incoming cables or 10kV end of incoming cables are arranged in the hyperbaric chamber, busbar I, switch I and fuse, 20kV end of incoming cables or 10kV end of incoming cables are successively by the inlet wire cable, busbar I is connected with the input of switch I, the output of switch I is connected with the input of fuse, the output of fuse is connected with the primary side of step-down transformer, when input 10kV, the output of fuse is connected with the 10kV of step-down transformer input tap, when input 20kV, 20kV is imported tap to be connected with the output of fuse with 10kV input tap series connection back, 0.4kV low-pressure chamber comprises switch I I and busbar II, the secondary end of step-down transformer is successively by switch I I, busbar II is connected with some load circuits, and is parallel with one another between the load circuit.
Described 20kV end of incoming cables or place, 10kV end of incoming cables are parallel with lightning arrester and electrification display I.Described busbar I and busbar II are connected with voltage transformer.Be connected with current transformer IV and electrification display II between the primary side of described fuse and step-down transformer, fuse is with in parallel with electrification display II again after current transformer IV connects, electrification display II one end is connected with cable by electric capacity, other end ground connection.Be in series with current transformer III between described switch I I and the busbar II.Described load circuit comprises single load circuit and multi-load loop, connect with busbar II in single load circuit and multi-load loop back parallel with one another, single load circuit comprises isolating switch I, circuit breaker I summation current transformer I, isolating switch I, circuit breaker I summation current transformer I connect mutually, the multi-load loop comprises isolating switch II, some circuit breaker II and some current transformer II, each circuit breaker II connects mutually with circuit instrument transformer II and afterwards forms branch road, connects with isolating switch II in each branch road back parallel with one another.Described load circuit also comprises capacitor compensation cabinet, and capacitor compensation cabinet can be single-phase capacitance compensating cabinet, three phase capacitance compensating cabinet and mix capacitor compensation cabinet, connects with busbar II after capacitor compensation cabinet and single load circuit and the parallel connection of multi-load loop.Described switch I is an on-load switch, and on-load switch is by earthed switch ground connection.Described switch I I is circuit breaker II, and circuit breaker II is fixed circuit breaker or withdrawable circuit breaker.Be provided with temperature control system in the described transformer room, temperature control system comprises temperature sensor, controller and blower fan, temperature sensor is connected with blower fan with controller successively, temperature sensor detected temperatures signal sends signal to controller, controller is controlled blower fan work according to signal, and top and bottom in the transformer room are respectively equipped with vent passages.
The utlity model has following beneficial effect: after having adopted above technical scheme, transformer of the present utility model, the primary end is provided with two-tap, can realize the requirement of 10kV and the different input voltage grades in 20kV electrical network transition front and back like this, guarantee that 0.4kV user carries out the transition to the 20kV power supply by the 10kV power supply smoothly on the basis that does not need the second investment, not only invest for a short time that cost is low, avoid overlapping investment, and can improve the power supply capacity and the adaptability of electric power system.The utility model is placed on 0.4kV low-pressure chamber, hyperbaric chamber and step-down transformer in the casing, it has characteristics such as compact conformation, volume are little, in light weight, intensity height, be convenient to transportation and on-the-spot the installation, can be transported to needed area by vehicles such as automobile, trains very easily installs, simultaneously it is compared cost and greatly reduces with building large-scale substation, has satisfied medium and small regional demand.Be connected with voltage transformer respectively on busbar I of the present utility model and the busbar II11, voltage transformer provides power supply and provides sampled voltage to protective device for operation, test and protective device.Switch I I of the present utility model is circuit breaker II; circuit breaker can be carried out the syllogic overcurrent protection to circuit, zero-sequenceprotection etc., and possess three distant functions; circuit breaker II is in series with current transformer, and current transformer can be to current measurement, metering and the increase protective device in loop, place.20kV of the present utility model is provided with on-load switch I in the hyperbaric chamber, and it can carry out the syllogic overcurrent protection to transformer.The bottom of the utility model casing is provided with heater, and when equipment produced condensation owing to the temperature difference, the heater automatically starting was regulated the temperature difference, removes condensation.Busbar II of the present utility model can connect many row's load circuits, can require the branch multichannel to expand according to load capacity like this.The utility model is provided with capacitor compensation cabinet, and it detects the low-pressure system power supply quality in real time, reactive power is compensated, to improve power supply quality; Scheme of compensating cabinet can be designed to compensation ways such as single-phase compensation, three-phase compensation, mixed compensation according to customer requirements, applied widely.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is an outline drawing of the present utility model
Fig. 3 is the distribution map of 0.4kV low-pressure chamber of the present utility model, hyperbaric chamber and step-down transformer
Embodiment
At Fig. 1, among Fig. 2 and Fig. 3, the utility model is the box contact transformer station that 0.4kV falls in a kind of 20kV/10kV, it comprises casing 1, be provided with hyperbaric chamber 2 and 0.4kV low-pressure chamber 3 in the casing 1, hyperbaric chamber 2 is 20kV hyperbaric chamber or 10kV hyperbaric chamber, between hyperbaric chamber 2 and 0.4kV low-pressure chamber 3, be provided with transformer room 4, be provided with step-down transformer 5 in the transformer room 4, the neutral ground of step-down transformer 5, the primary side of step-down transformer 5 is provided with 20kV input tap and 10kV input tap, 20kV end of incoming cables or 10kV end of incoming cables 6 are arranged in the hyperbaric chamber 2, busbar I7, switch I 8 and fuse 9, switch I 8 is an on-load switch, on-load switch is by earthed switch ground connection, 20kV end of incoming cables or 6 places, 10kV end of incoming cables are parallel with lightning arrester 13 and electrification display I14,20kV end of incoming cables or 10kV end of incoming cables 6 are successively by inlet wire cable 10, busbar I7 is connected with the input of switch I 8, the output of switch I 8 is connected with the input of fuse 9, the output of fuse 9 is connected with the primary side of step-down transformer 5, between the primary side of fuse 9 and step-down transformer 5, be connected with current transformer IV29 and electrification display II15, fuse 9 is with in parallel with electrification display II15 again after current transformer IV29 connects, electrification display II15 one end is connected with cable by electric capacity, other end ground connection, when input 10kV, the output of fuse 9 is connected with the 10kV input tap of step-down transformer 5, when input 20kV, 20kV is imported tap to be connected with the output of fuse 9 with 10kV input tap series connection back, 0.4kV low-pressure chamber 3 comprises switch I I11 and busbar II12, switch I I11 is circuit breaker II, circuit breaker II is fixed circuit breaker or withdrawable circuit breaker, the secondary end of step-down transformer 5 is successively by switch I I11, busbar II12 is connected with some load circuits, be in series with current transformer III16 between switch I I11 and the busbar II12, parallel with one another between the load circuit, be connected with voltage transformer on busbar I7 and the busbar II12, load circuit comprises single load circuit and multi-load loop, connect with busbar II12 in single load circuit and multi-load loop back parallel with one another, single load circuit comprises isolating switch I17, circuit breaker I18 summation current transformer I19, isolating switch I17, circuit breaker I18 summation current transformer I19 connects mutually, the multi-load loop comprises isolating switch II20, three circuit breaker II21 and three current transformer II22, each circuit breaker II21 connects mutually with circuit instrument transformer II22 and afterwards forms branch road, article three, connect with isolating switch II20 in branch road back parallel with one another, load circuit also comprises capacitor compensation cabinet, capacitor compensation cabinet is the three phase capacitance compensating cabinet, the three phase capacitance compensating cabinet comprises isolating switch III23, current transformer 24, fuse 25, contactor 26, thermal relay 27 and three-phase building-out capacitor 28, isolating switch III23 successively with current transformer 24, fuse 25, contactor 26, thermal relay 27 and 28 series connection of three-phase building-out capacitor, connect with busbar II after compensating cabinet and single load circuit and the parallel connection of multi-load loop, in transformer room 4, be provided with temperature control system, temperature control system comprises temperature sensor, controller and blower fan, temperature sensor is connected with blower fan with controller successively, temperature sensor detected temperatures signal sends signal to controller, controller is controlled blower fan work according to signal, top and bottom in transformer room 4 are provided with vent passages, and capacitor compensation cabinet also can and mix capacitor compensation cabinet for single-phase capacitance compensating cabinet cabinet.
Claims (10)
1. the box contact transformer station of 0.4kV falls in a 20kV/10kV, it comprises casing (1), it is characterized in that being provided with in the described casing (1) hyperbaric chamber (2) and 0.4kV low-pressure chamber (3), hyperbaric chamber (2) is 20kV hyperbaric chamber or 10kV hyperbaric chamber, between hyperbaric chamber (2) and 0.4kV low-pressure chamber (3), be provided with transformer room (4), be provided with step-down transformer (5) in the transformer room (4), the neutral ground of step-down transformer (5), the primary side of step-down transformer (5) is provided with 20kV input tap and 10kV input tap, 20kV end of incoming cables or 10kV end of incoming cables (6) are arranged in the hyperbaric chamber (2), busbar I (7), switch I (8) and fuse (9), 20kV end of incoming cables or 10kV end of incoming cables (6) are successively by inlet wire cable (10), busbar I (7) is connected with the input of switch I (8), the output of switch I (8) is connected with the input of fuse (9), the output of fuse (9) is connected with the primary side of step-down transformer (5), when input 10kV, the output of fuse (9) is connected with the 10kV input tap of step-down transformer (5), when input 20kV, 20kV is imported tap to be connected with the output of fuse (9) with 10kV input tap series connection back, 0.4kV low-pressure chamber comprises switch I I (11) and busbar II (12), the secondary end of step-down transformer (5) is successively by switch I I (11), busbar II (12) is connected with some load circuits, and is parallel with one another between the load circuit.
2. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 1, it is characterized in that described 20kV end of incoming cables or 10kV end of incoming cables place is parallel with lightning arrester (13) and electrification display I (14).
3. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 1, it is characterized in that being connected with voltage transformer on described busbar I (7) and the busbar II (12).
4. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 1, it is characterized in that being connected with current transformer IV (29) and electrification display II (15) between the primary side of described fuse (9) and step-down transformer (5), fuse (9) is with in parallel with electrification display II (15) again after current transformer IV (29) connects, electrification display II (15) one ends are connected other end ground connection with cable by electric capacity.
5. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 1, it is characterized in that being in series with current transformer III (16) between described switch I I (11) and the busbar II (12).
6. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 1, it is characterized in that load circuit comprises single load circuit and multi-load loop, connect with busbar II in single load circuit and multi-load loop back parallel with one another, single load circuit comprises isolating switch I (17), circuit breaker I (18) summation current transformer I (19), isolating switch I (17), circuit breaker I (18) summation current transformer I (19) is series connection mutually, the multi-load loop comprises isolating switch II (20), some circuit breaker II (21) and some current transformer II (22), each circuit breaker II (21) connects mutually with circuit instrument transformer II (22) and afterwards forms branch road, connects with isolating switch II (20) in each branch road back parallel with one another.
7. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 6, it is characterized in that described load circuit also comprises capacitor compensation cabinet, capacitor compensation cabinet can be single-phase capacitance compensating cabinet, three phase capacitance compensating cabinet and mix capacitor compensation cabinet, connects with busbar II after capacitor compensation cabinet and single load circuit and the parallel connection of multi-load loop.
8. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 1, it is characterized in that described switch I (8) is on-load switch, and on-load switch is by earthed switch ground connection.
9. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 1 or 5, it is characterized in that described switch I I (11) is circuit breaker II, and circuit breaker II is fixed circuit breaker or withdrawable circuit breaker.
10. the box contact transformer station of 0.4kV falls in 20kV/10kV according to claim 1, it is characterized in that being provided with temperature control system in the described transformer room (4), temperature control system comprises temperature sensor, controller and blower fan, temperature sensor is connected with blower fan with controller successively, temperature sensor detected temperatures signal sends signal to controller, and controller is controlled blower fan work according to signal, and top and bottom in transformer room (4) are respectively equipped with vent passages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920043968 CN201450257U (en) | 2009-06-15 | 2009-06-15 | Box-type interconnection transformer substation for reducing 20kV/10kV to 0.4kV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920043968 CN201450257U (en) | 2009-06-15 | 2009-06-15 | Box-type interconnection transformer substation for reducing 20kV/10kV to 0.4kV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450257U true CN201450257U (en) | 2010-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920043968 Expired - Lifetime CN201450257U (en) | 2009-06-15 | 2009-06-15 | Box-type interconnection transformer substation for reducing 20kV/10kV to 0.4kV |
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| Country | Link |
|---|---|
| CN (1) | CN201450257U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751663A (en) * | 2012-07-27 | 2012-10-24 | 江西变电设备有限公司 | Pole-mounted intelligent combination type transformer and running mode thereof |
| CN104362676A (en) * | 2014-11-12 | 2015-02-18 | 国家电网公司 | Distributed power supply grid connection access system |
| CN107634499A (en) * | 2017-09-28 | 2018-01-26 | 广东电网有限责任公司东莞供电局 | Double-protection load switch fuse combined electrical apparatus and circuit structure |
-
2009
- 2009-06-15 CN CN 200920043968 patent/CN201450257U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102751663A (en) * | 2012-07-27 | 2012-10-24 | 江西变电设备有限公司 | Pole-mounted intelligent combination type transformer and running mode thereof |
| CN104362676A (en) * | 2014-11-12 | 2015-02-18 | 国家电网公司 | Distributed power supply grid connection access system |
| CN107634499A (en) * | 2017-09-28 | 2018-01-26 | 广东电网有限责任公司东莞供电局 | Double-protection load switch fuse combined electrical apparatus and circuit structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU ELECTRIC POWER COMPANY TAIZHOU POWER SUPPL Free format text: FORMER OWNER: JIANGSU TURBOSTAR ELECTRICAL CO., LTD. Effective date: 20121115 Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: TAIZHOU POWER SUPPLY CO. OF JIANGSU ELECTRIC POWER CO. Effective date: 20121115 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 225300 TAIZHOU, JIANGSU PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121115 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Jiangsu Electric Power Company Patentee after: Taizhou Power Supply Co. of Jiangsu Electric Power Co. Patentee after: Jiangsu Turbostar Electrical Co., Ltd. Address before: 225300 Phoenix West Road, Jiangsu, Taizhou, No. 2 Patentee before: Taizhou Power Supply Co. of Jiangsu Electric Power Co. Patentee before: Jiangsu Turbostar Electrical Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100505 |