CN204333969U - The charged commutation device of uncompensated load - Google Patents
The charged commutation device of uncompensated load Download PDFInfo
- Publication number
- CN204333969U CN204333969U CN201420608285.2U CN201420608285U CN204333969U CN 204333969 U CN204333969 U CN 204333969U CN 201420608285 U CN201420608285 U CN 201420608285U CN 204333969 U CN204333969 U CN 204333969U
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- phase
- load
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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
Abstract
The utility model relates to the charged commutation device of a kind of uncompensated load, by the mode causing the rapid switching of the single-phase load of three-phase imbalance to another phase is adjusted three-phrase burden balance.Device has two input channels, and one of them input channel is connected with current single-phase load electricity consumption phase phase line, and another passage is connected with the phase phase line that will be switched to.Device has an output channel, is connected with single-phase load live wire.By controlling the break-make of this device input channel and output channel in load switching process, powering to load when manual switching single-phase load and completing commutation, greatly reducing the power-off time of load, improve the reliability of user power utilization.
Description
Technical field
The present invention relates to a kind of device with realization, electrical network three-phase imbalance load being carried out to balanced adjustment by charged commutation.
Background technology
The power supply of Traditional Man switching single-phase load adjusts the mode of three-phase equilibrium mutually, needing first has a power failure to load operates again, this has had a strong impact on the power supply reliability to user, propose challenge to the power supply reliability of electrical network, therefore the three-phase imbalance problem of low and medium voltage distribution network and rural power grids has become problem demanding prompt solution in current power distribution systems.In Distribution network system, due to early stage electrical reticulation design plan inconsiderate, there will be the situation that a large amount of single-phase load concentrates on a phase or two-phase, these unbalanced loads can make distribution system produce three-phase imbalance, cause the imbalance of electric power system three-phase voltage, electric current.Three-phase voltage or the asymmetric meeting of electric current cause a series of harm to the generating in electric power system, transmission of electricity, controller switching equipment and power consumption equipment, such as: increase line loss, increase the active loss of distribution transformer, reduction distribution transformer is exerted oneself, affected output power of motor etc., therefore just need effective way to address these problems.Due to the restriction of the factors such as circuit and distribution transformer One's name is legion, power supply user dispersion, fund cost in Distribution network especially agricultural network, the modes such as net mending network are adjusted to solve the problem of three-phase imbalance by configuration low-voltage reactive compensator capable and load and unrealistic, so utilize now the charged commutation device of uncompensated load to complete the adjustment of three-phrase burden balance.
Summary of the invention
The invention provides one utilizes the charged commutation device of uncompensated load to complete three-phrase burden balance adjustment.When there is three-phase imbalance in electrical network, the phase line being switched the electric power system place that single-phase load accesses by charged commutation device carrys out Load adjustment, makes it be tending towards three-phase equilibrium.Concrete scheme is: before wanting commutation, the access of this device is needed the phase line switched, during initial condition, input channel and output channel disconnect, control break-make by controller and make input channel La and output channel Lc conducting, single-phase load 5 live wire and phase line are disconnected, now, power to load via this device.Control break-make by controller, input channel La and output channel Lc is disconnected, meanwhile, input channel Lb and output channel Lc conducting, complete commutation.Again the live wire of load is connected with the phase line after commutation, device input channel and output channel are all disconnected, device is closed and pulls down.
The charged commutation device of a kind of uncompensated load, this device comprises input channel La (1), input channel Lb (2), output channel Lc (3), the neutral line/ground wire passage N (4), microcontroller (7), controls display panel (8).It is characterized in that: input channel La (1), input channel Lb (2) are connected with a bidirectional triode thyristor (9) respectively, be connected with output channel Lc (3) after two bidirectional triode thyristors (9) are in parallel, control turn-on instant with microcontroller (7), the control information of microcontroller (7) is by controlling display panel (8) display.
The charged commutation device of uncompensated load controls break-make by controller and completes load commutation, the dead electricity time of single-phase load was determined by the operate time of device, generally can control within 10ms, and the mode adopting traditional manual to switch, the interruption duration of load often will more than 30min, the charged commutation device of visible uncompensated load can effectively avoid traditional manual to switch the long-time power failure phenomenon caused, and greatly improves the power supply reliability of user; This device is easy and simple to handle and with low cost simultaneously, reduces reactive-load compensation equipment and uses, and greatly reduces power cost and drops into; In addition the problem causing three-phase imbalance because early stage layout of roads is inconsiderate, do not need to carry out regular rapid adjustment to three-phase load, often only once just need can be ensured the three-phase equilibrium of long period by the charged commutation device adjustment of uncompensated load, therefore the charged commutation device of uncompensated load has high using value in these cases.
Accompanying drawing explanation
Fig. 1 is the operating diagram of a kind of situation of the present invention:
Wherein 1. input channel La, 2. input channel Lb, 3. output channel Lc, 5. single-phase load, 6. transmission line L,
Fig. 2 is apparatus of the present invention schematic diagrams:
Wherein 1. input channel La, 2. input channel Lb, 3. output channel Lc, 4. neutral line N, 7. microcontroller, 8. control display panel.
Embodiment
In order to deepen the understanding of the present invention, below in conjunction with drawings and Examples, invention is described further.
In FIG, such as certain single-phase load 5 is powered by B phase, because three-phase load unbalance need by its switching to C phase, then the input terminal La1 of charged commutation device and input terminal Lb2 only need be received B phase and the C phase of transmission line by operating personnel respectively, lead-out terminal Lc3 is connected with single-phase load 5, conducting between input terminal La1, lead-out terminal Lc3, charged commutation device output voltage is B phase voltage, now single-phase load 5 and transmission line L6 and B are disconnected mutually, then load is still powered by charged commutation device by B phase again; When needs switching, site operation personnel only need control charged commutation device, make its input terminal La1, lead-out terminal Lc3 disconnects fast, input terminal Lb2, lead-out terminal Lc3 fast conducting, the supply power mode of load is just that C phase is powered by charged commutation device by B phase by charged commutation device power switching, at this moment load is received transmission line C phase again, then remove charged commutation device, just complete load balancing adjustment.
In fig. 2, when needs adjust single-phase load 5 supply power mode, only need by input channel La1, input channel Lb2 is connected to the two-way power end needing to switch, output channel Lc3 receives the feeder ear of load, then the connection line of the original and power supply of load is excised, load is made only to obtain electric power by output channel Lc3, now can realize load by the device switching push button controlled on display panel 8 to be powered to by input channel Lb2 by input channel La1 power switching, i.e. input channel La1, output channel Lc3 first disconnects, then input channel Lb2, output channel Lc3 conducting, switching time can be controlled in 10ms.
Claims (1)
1. the charged commutation device of uncompensated load, this device comprises input channel La (1), input channel Lb (2), output channel Lc (3), the neutral line/ground wire passage N (4), microcontroller (7), control display panel (8), it is characterized in that: input channel La (1), input channel Lb (2) is connected with a bidirectional triode thyristor (9) respectively, be connected with output channel Lc (3) after two bidirectional triode thyristors (9) are in parallel, turn-on instant is controlled with microcontroller (7), the control information of microcontroller (7) is by controlling display panel (8) display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420608285.2U CN204333969U (en) | 2014-10-21 | 2014-10-21 | The charged commutation device of uncompensated load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420608285.2U CN204333969U (en) | 2014-10-21 | 2014-10-21 | The charged commutation device of uncompensated load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204333969U true CN204333969U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420608285.2U Expired - Fee Related CN204333969U (en) | 2014-10-21 | 2014-10-21 | The charged commutation device of uncompensated load |
Country Status (1)
| Country | Link |
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| CN (1) | CN204333969U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591825A (en) * | 2016-07-07 | 2018-01-16 | 无锡美凯能源科技有限公司 | One kind compensation unbalanced micro-capacitance sensor device and method of three phase network |
| CN109193712A (en) * | 2018-11-22 | 2019-01-11 | 国网山东省电力公司莱西市供电公司 | A kind of distribution station arrangement of the three-phase load unbalance adjust automatically of no off interval |
-
2014
- 2014-10-21 CN CN201420608285.2U patent/CN204333969U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591825A (en) * | 2016-07-07 | 2018-01-16 | 无锡美凯能源科技有限公司 | One kind compensation unbalanced micro-capacitance sensor device and method of three phase network |
| CN107591825B (en) * | 2016-07-07 | 2019-05-17 | 无锡美凯能源科技有限公司 | A kind of unbalanced micro-capacitance sensor device and method of compensation three phase network |
| CN109193712A (en) * | 2018-11-22 | 2019-01-11 | 国网山东省电力公司莱西市供电公司 | A kind of distribution station arrangement of the three-phase load unbalance adjust automatically of no off interval |
| CN109193712B (en) * | 2018-11-22 | 2019-05-10 | 国网山东省电力公司莱西市供电公司 | A kind of distribution station arrangement of the three-phase load unbalance adjust automatically of no off interval |
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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: 20150513 Termination date: 20151021 |
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| EXPY | Termination of patent right or utility model |