CN104752968A - Power box with dual power supplies - Google Patents
Power box with dual power supplies Download PDFInfo
- Publication number
- CN104752968A CN104752968A CN201410747132.0A CN201410747132A CN104752968A CN 104752968 A CN104752968 A CN 104752968A CN 201410747132 A CN201410747132 A CN 201410747132A CN 104752968 A CN104752968 A CN 104752968A
- Authority
- CN
- China
- Prior art keywords
- phase
- cabinet
- ammeter
- duplicate supply
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—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
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to a power box with dual power supplies. The power box comprises a cabinet body and a top cap, wherein two cabinet doors are arranged on the front side of the cabinet body; louvers are arranged on two sides of the cabinet body, disconnecting switches and at least four commutation circuits are arranged in the cabinet body, and the commutation circuits are connected with system power supplies through the disconnecting switches; the commutation circuits comprise bus bars, phase-change switches, breakers and current transformers; the phase-change switches, the breakers and the current transformers are orderly and serially connected, the bus bars are connected with the disconnecting switches, the input ends of the phase-change switches are connected with any two phases of the bus bars, ends of the current transformers are connected with the breakers, opposite ends of the current transformers are connected with loads, and the wire inlet ends of the breakers are connected with ammeters. According to the power box, the problems that the loads no have lines for a long time due to interruption of single phase and null lines have large current because some phase is far higher than other two phases in loads can be solved, meanwhile the power box has the under-voltage, over-voltage and phase-losing protection functions, and thus the commutation circuits of the power supplies are increased in practicability and reliability.
Description
Technical field
The present invention relates to power distribution cabinet field, particularly a kind of duplicate supply headstock.
Background technology
In the modern life, household electricity provides great convenience for the clothing, food, lodging and transportion--basic necessities of life of people, particularly in community powers, is also very harsh for its requirement.So to power middle produced problem for community, process and emergency measures fast all should be had.
Existing single-phase electricity consumption all concentrates on residential quarter, commercial power and factory's electricity consumption.These power loads have following 2 kinds of situations: 1, occur that single-phase power-off makes load long-time not charged, affect the normal power supply in this region.2, in a time period, certain phase power load can far above another two-phase, and this there will be the extremely uneven situation of three-phase current, and neutral line current sharply rises, and can affect power grid quality, produces potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is: in order to overcome prior art when power supply goes wrong, cannot process in time fast, and there is the deficiency of potential safety hazard, provides a kind of duplicate supply headstock.
The technical solution adopted for the present invention to solve the technical problems is: a kind of duplicate supply headstock, comprise cabinet and top cover, two fan cabinet doors are provided with on front side of described cabinet, described cabinet both sides are provided with shutter, described cabinet inside is provided with isolating switch and at least four commutation circuits, and each commutation circuit is all connected with system power supply by isolating switch;
Described commutation circuit comprises bus bar and the phase-change switch be connected in series successively, circuit breaker summation current transformer, described bus bar is connected with isolating switch, the input of described phase-change switch and any two of bus bar is connected, one end of described current transformer is connected with circuit breaker, another terminating load of described current transformer, the end of incoming cables of described circuit breaker is connected with ammeter.
Particularly, described ammeter is single-phase multifunctional ammeter.
Particularly, described phase-change switch and circuit breaker are 2 pole switches.
Particularly, described cabinet inside is also provided with appliance plate, and described appliance plate is parallel with cabinet door, and described isolating switch, phase-change switch, circuit breaker and ammeter are all fixed on appliance plate.
Particularly, described cabinet is that aluminizing zine plate is made.
Particularly, described cabinet back panel wiring adopts three-phase five-wire mode.
Particularly, described ammeter connects background control center by RS485 interface.
The invention has the beneficial effects as follows; this duplicate supply headstock is by being arranged between terminal and system power supply; can monitor in real time the voltage and current of circuit; the switching of voltage manually or automatically and the balance to three-phase electricity consumption can be realized; not only overcome owing to occurring that single-phase power-off causes load for a long time not with line and the large problem of the neutral line current that causes far above other two-phase due to a certain phase load; also there is under-voltage, overvoltage, disconnected equal defencive function simultaneously, improve practicality and the reliability of this power supply commutation circuit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of duplicate supply headstock of the present invention;
Fig. 2 is the structural representation of duplicate supply headstock of the present invention;
Fig. 3 is the circuit theory diagrams of duplicate supply headstock of the present invention;
In figure: 1. cabinet, 2. top cover, 3. cabinet door, 4. shutter, 5. commutation circuit, 6. appliance plate, FU. isolating switch, S. phase-change switch, QF. circuit breaker, TA. current transformer, E. ammeter.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Figure 1-Figure 3, a kind of duplicate supply headstock, comprise cabinet 1 and top cover 2, two fan cabinet doors 3 are provided with on front side of described cabinet 1, described cabinet 1 both sides are provided with shutter 4, described cabinet 1 inside is provided with isolating switch FU and at least four commutation circuit 5, and each commutation circuit 5 is all connected with system power supply by isolating switch FU;
Described commutation circuit 5 comprises bus bar and the phase-change switch S be connected in series successively, circuit breaker Q F summation current transformer TA, described bus bar is connected with isolating switch FU, the input of described phase-change switch S and any two of bus bar is connected, one end of described current transformer TA is connected with circuit breaker Q F, another terminating load of described current transformer TA, the end of incoming cables of described circuit breaker Q F is connected with ammeter E.
Particularly, described ammeter E is single-phase multifunctional ammeter.
Particularly, described phase-change switch S and circuit breaker Q F is 2 pole switches.
Particularly, described cabinet 1 inside is also provided with appliance plate 6, and described appliance plate 6 is parallel with cabinet door 3, and described isolating switch FU, phase-change switch S, circuit breaker Q F and ammeter E are all fixed on appliance plate 6.
Particularly, described cabinet 1 is made for aluminizing zine plate.
Particularly, described cabinet 1 back panel wiring adopts three-phase five-wire mode.
Particularly, described ammeter E connects background control center by RS485 interface.
In commutation circuit 5, when a certain item voltage dead electricity, by the monitoring of Double power of single-phase source to two phase voltages, after obtaining power cut-off information, phase-change switch S will make switching action rapidly, from no-voltage certain be switched to certain phase of voltage mutually, guarantee that power consumption equipment can not power-off for a long time, to improve the reliability of power supply.
When having certain phase current higher than other biphase current in commutation circuit 5, three-phase current unbalance will be caused, now ammeter E sends data to background control center, background control center is according to Data Comparison, obtain current imbalance conclusion and send control command to phase-change switch, thus phase-change switch S will switch between single phase poaer supply, three-phase electricity consumption is tended to balance state as far as possible; And This move also can manually realize, when operator observes the display electric current of each ammeter E, after finding differences, also manually phase-change switch can be switched, to realize the object of balanced balanced current.
Compared with prior art; this duplicate supply headstock is by being arranged between terminal and system power supply; can monitor in real time the voltage and current of circuit; the switching of voltage manually or automatically and the balance to three-phase electricity consumption can be realized; not only overcome owing to occurring that single-phase power-off causes load for a long time not with line and the large problem of the neutral line current that causes far above other two-phase due to a certain phase load; also there is under-voltage, overvoltage, disconnected equal defencive function simultaneously, improve practicality and the reliability of this power supply commutation circuit.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (7)
1. a duplicate supply headstock, it is characterized in that, comprise cabinet (1) and top cover (2), described cabinet (1) front side is provided with two fan cabinet doors (3), described cabinet (1) both sides are provided with shutter (4), described cabinet (1) inside is provided with isolating switch (FU) and at least four commutation circuits (5), and each commutation circuit (5) is all connected with system power supply by isolating switch (FU);
Described commutation circuit (5) comprises bus bar and the phase-change switch (S) be connected in series successively, circuit breaker (QF) summation current transformer (TA), described bus bar is connected with isolating switch (FU), the input of described phase-change switch (S) and any two of bus bar is connected, one end of described current transformer (TA) is connected with circuit breaker (QF), another terminating load of described current transformer (TA), the end of incoming cables of described circuit breaker (QF) is connected with ammeter (E).
2. duplicate supply headstock as claimed in claim 1, it is characterized in that, described ammeter (E) is single-phase multifunctional ammeter.
3. duplicate supply headstock as claimed in claim 1, it is characterized in that, described phase-change switch (S) and circuit breaker (QF) are 2 pole switches.
4. duplicate supply headstock as claimed in claim 1, it is characterized in that, described cabinet (1) inside is also provided with appliance plate (6), described appliance plate (6) is parallel with cabinet door (3), and described isolating switch (FU), phase-change switch (S), circuit breaker (QF) and ammeter (E) are all fixed on appliance plate (6).
5. duplicate supply headstock as claimed in claim 1, is characterized in that, described cabinet (1) is made for aluminizing zine plate.
6. duplicate supply headstock as claimed in claim 1, is characterized in that, described cabinet (1) back panel wiring adopts three-phase five-wire mode.
7. duplicate supply headstock as claimed in claim 1, is characterized in that, described ammeter (E) connects background control center by RS485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747132.0A CN104752968A (en) | 2014-12-01 | 2014-12-01 | Power box with dual power supplies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410747132.0A CN104752968A (en) | 2014-12-01 | 2014-12-01 | Power box with dual power supplies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104752968A true CN104752968A (en) | 2015-07-01 |
Family
ID=53592261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410747132.0A Pending CN104752968A (en) | 2014-12-01 | 2014-12-01 | Power box with dual power supplies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104752968A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333400A (en) * | 2018-03-19 | 2018-07-27 | 秦峥 | A kind of intelligent metering case and its application |
| CN110783937A (en) * | 2019-11-29 | 2020-02-11 | 张翼洲 | Low-voltage line three-inlet two-outlet type intelligent phase modulation device |
| CN110836989A (en) * | 2019-12-01 | 2020-02-25 | 张翼洲 | Low-voltage automatic pre-distribution three-phase line centralized ammeter box |
| CN110867860A (en) * | 2019-12-01 | 2020-03-06 | 张翼洲 | Low-voltage automatic pre-distribution three-phase line single-household ammeter box |
| CN110867876A (en) * | 2019-12-01 | 2020-03-06 | 张翼洲 | Low-voltage automatic pre-distribution three-phase line balancing device based on Internet of things and big data |
| CN110957747A (en) * | 2019-12-01 | 2020-04-03 | 张翼洲 | Low-voltage automatic pre-distribution three-phase line balance box |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201570822U (en) * | 2009-11-19 | 2010-09-01 | 晶龙实业集团有限公司 | Lighting kilowatt-hour metering distribution box |
| CN202957611U (en) * | 2012-11-05 | 2013-05-29 | 镇江长河电力技术有限公司 | Three-phase current unbalance adjusting system of power distribution network |
| CN203352186U (en) * | 2013-04-17 | 2013-12-18 | 国家电网公司 | Three-phase low-voltage load adjusting circuit |
-
2014
- 2014-12-01 CN CN201410747132.0A patent/CN104752968A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201570822U (en) * | 2009-11-19 | 2010-09-01 | 晶龙实业集团有限公司 | Lighting kilowatt-hour metering distribution box |
| CN202957611U (en) * | 2012-11-05 | 2013-05-29 | 镇江长河电力技术有限公司 | Three-phase current unbalance adjusting system of power distribution network |
| CN203352186U (en) * | 2013-04-17 | 2013-12-18 | 国家电网公司 | Three-phase low-voltage load adjusting circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333400A (en) * | 2018-03-19 | 2018-07-27 | 秦峥 | A kind of intelligent metering case and its application |
| CN110783937A (en) * | 2019-11-29 | 2020-02-11 | 张翼洲 | Low-voltage line three-inlet two-outlet type intelligent phase modulation device |
| CN110836989A (en) * | 2019-12-01 | 2020-02-25 | 张翼洲 | Low-voltage automatic pre-distribution three-phase line centralized ammeter box |
| CN110867860A (en) * | 2019-12-01 | 2020-03-06 | 张翼洲 | Low-voltage automatic pre-distribution three-phase line single-household ammeter box |
| CN110867876A (en) * | 2019-12-01 | 2020-03-06 | 张翼洲 | Low-voltage automatic pre-distribution three-phase line balancing device based on Internet of things and big data |
| CN110957747A (en) * | 2019-12-01 | 2020-04-03 | 张翼洲 | Low-voltage automatic pre-distribution three-phase line balance box |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150701 |