CN101577400A - Chamber type liaison transforming plant reduced by 0.4kV from 20kV/10KV - Google Patents
Chamber type liaison transforming plant reduced by 0.4kV from 20kV/10KV Download PDFInfo
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- CN101577400A CN101577400A CNA2009100331569A CN200910033156A CN101577400A CN 101577400 A CN101577400 A CN 101577400A CN A2009100331569 A CNA2009100331569 A CN A2009100331569A CN 200910033156 A CN200910033156 A CN 200910033156A CN 101577400 A CN101577400 A CN 101577400A
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Abstract
The invention discloses a chamber type liaison transforming plant reduced by 0.4kV from 20kV/10KV. A high voltage room(2) is a 20kV high voltage room or 10kV high voltage room; a transformer room(4) provided with a reducing transformer(5) is arranged between the high voltage room(2) and a 0.4kV low voltage room(3); a primary side of the reducing transformer(5) is provided with a 20kV input tap and a 10kV input tap; the inside of the high voltage room(2) is provided with a 20kV lead-in end or a 10kV lead-in end(6), a busbar I (7), a switch I (8) and a fuse(9); the 20kV lead-in end or the 10kV lead-in end(6) passes a lead-in cable(10) and the busbar I (7) in sequence and is connected with an input end of the switch I (8); an output end of the switch I (8) is connected with an input end of the fuse(9); and an output end of the fuse(9) is connected with the primary side of the reducing transformer(5).
Description
Technical field
The present invention 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 invention provides the box contact transformer station that 0.4kV falls in a kind of 20kV/10kV, 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 present invention 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 present invention has following beneficial effect: after having adopted above technical scheme, transformer of the present invention, 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 present invention 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 invention 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 invention 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 invention 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 casing of the present invention 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 invention can connect many row's load circuits, can require the branch multichannel to expand according to load capacity like this.The present invention 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 a structural representation of the present invention
Fig. 2 is an outline drawing of the present invention
Fig. 3 is the distribution map of 0.4kV low-pressure chamber of the present invention, hyperbaric chamber and step-down transformer
Embodiment
At Fig. 1, among Fig. 2 and Fig. 3, the box contact transformer station of 0.4kV falls in the present invention for 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 I 7, 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 I 14,20kV 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, between the primary side of fuse 9 and step-down transformer 5, be connected with current transformer IV29 and electrification display II 15, fuse 9 is with in parallel with electrification display II 15 again after current transformer IV29 connects, electrification display II 15 1 ends are 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 I 11 and busbar II 12, switch I I 11 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 I 11, busbar II 12 is connected with some load circuits, be in series with current transformer III16 between switch I I 11 and the busbar II 12, parallel with one another between the load circuit, be connected with voltage transformer on busbar I 7 and the busbar II 12, load circuit comprises single load circuit and multi-load loop, connect with busbar II 12 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 connect mutually, the multi-load loop comprises isolating switch II 20, three circuit breaker II 21 and three current transformer II 22, each circuit breaker II 21 forms branch road with the circuit instrument transformer II 22 mutual backs of connecting, article three, connect with isolating switch II 20 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 III 23 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 kind of 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 |
|---|---|---|---|
| CNA2009100331569A CN101577400A (en) | 2009-06-15 | 2009-06-15 | Chamber type liaison transforming plant reduced by 0.4kV from 20kV/10KV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100331569A CN101577400A (en) | 2009-06-15 | 2009-06-15 | Chamber type liaison transforming plant reduced by 0.4kV from 20kV/10KV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101577400A true CN101577400A (en) | 2009-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100331569A Pending CN101577400A (en) | 2009-06-15 | 2009-06-15 | Chamber type liaison transforming plant reduced by 0.4kV from 20kV/10KV |
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| Country | Link |
|---|---|
| CN (1) | CN101577400A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231535A (en) * | 2011-06-24 | 2011-11-02 | 慈溪市供电局 | Large-capacity distribution network system |
| CN102611192A (en) * | 2012-04-19 | 2012-07-25 | 中水北方勘测设计研究有限责任公司 | Power supply guiding and connecting device for middle-sized peak shaving hydropower station |
| WO2012109779A1 (en) * | 2011-02-18 | 2012-08-23 | 上海市电力公司 | Single power feed 10 kv power distribution apparatus |
| CN102664354A (en) * | 2012-05-14 | 2012-09-12 | 章丘市供电公司 | Multifunctional low voltage distribution cabinet |
| CN103840379A (en) * | 2014-03-31 | 2014-06-04 | 国网上海市电力公司 | PT1 type power distribution station |
| CN103840380A (en) * | 2014-03-31 | 2014-06-04 | 国网上海市电力公司 | PT2 type power distribution station |
| CN103840378A (en) * | 2014-03-31 | 2014-06-04 | 国网上海市电力公司 | Improved PT1 type power distribution station |
| CN104682224A (en) * | 2014-12-30 | 2015-06-03 | 国家电网公司 | Fast-moving power distribution integral device |
-
2009
- 2009-06-15 CN CNA2009100331569A patent/CN101577400A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012109779A1 (en) * | 2011-02-18 | 2012-08-23 | 上海市电力公司 | Single power feed 10 kv power distribution apparatus |
| CN102231535A (en) * | 2011-06-24 | 2011-11-02 | 慈溪市供电局 | Large-capacity distribution network system |
| CN102611192A (en) * | 2012-04-19 | 2012-07-25 | 中水北方勘测设计研究有限责任公司 | Power supply guiding and connecting device for middle-sized peak shaving hydropower station |
| CN102664354A (en) * | 2012-05-14 | 2012-09-12 | 章丘市供电公司 | Multifunctional low voltage distribution cabinet |
| CN103840379A (en) * | 2014-03-31 | 2014-06-04 | 国网上海市电力公司 | PT1 type power distribution station |
| CN103840380A (en) * | 2014-03-31 | 2014-06-04 | 国网上海市电力公司 | PT2 type power distribution station |
| CN103840378A (en) * | 2014-03-31 | 2014-06-04 | 国网上海市电力公司 | Improved PT1 type power distribution station |
| CN104682224A (en) * | 2014-12-30 | 2015-06-03 | 国家电网公司 | Fast-moving power distribution integral device |
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Application publication date: 20091111 |