CN105610134B - Two line user's phasing switch device of low pressure - Google Patents
Two line user's phasing switch device of low pressure Download PDFInfo
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- CN105610134B CN105610134B CN201610111445.6A CN201610111445A CN105610134B CN 105610134 B CN105610134 B CN 105610134B CN 201610111445 A CN201610111445 A CN 201610111445A CN 105610134 B CN105610134 B CN 105610134B
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- 238000004804 winding Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 239000004020 conductor Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/226—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for wires or cables, e.g. heating wires
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Abstract
The present invention relates to termination technical fields, it is a kind of two line user's phasing switch device of low pressure, including the poles bus N terminals, the poles user N terminals, DC power supply and three groups of single-phase changeover modules, corresponding every group of single-phase switch groups are equipped with corresponding switching signal input terminal, the single-phase incoming end of user and bus terminals end, and bus N pole terminals are electrically connected with the poles user N terminals；Every group of single-phase changeover module includes electromagnetic relay and triode.Structure of the invention is reasonable and compact, is coordinated by triode and electromagnetic relay, the coil of corresponding electromagnetic relay can be kept conductive by control signal generator and triode, and then complete commutation process when it is more than critical three-phase current asymmetry occur；It is simple to operate, it is time saving and energy saving, and three-phase switching can be fast implemented, it effectively avoids, because there is asymmetric electric current in operational process, causing loss high, the problem of quality of voltage difference.
Description
Technical field
The present invention relates to termination technical fields, are a kind of two line user's phasing switch devices of low pressure.
Background technology
At present often there is loss height in the low-voltage distribution cable in part rural area, and the problem of quality of voltage difference causes above-mentioned asks
There are many influence factor of topic, and wherein asymmetric operation is one of principal element.It, certainly will be in zero curve due to the presence of asymmetric electric current
On cause power attenuation, so as to cause total losses increase.Asymmetric operation, which causes increased principal element is lost, to be had：1. asymmetric
Load capacity ratio shared in total capacity, the 2. size of neutral conductor conductor cross-section, the 3. position of single-phase load tie-point, 4.
Single-phase-two-wire power supply mode.
Under the overall background of upgrading of rural power grids upgrading, rural low voltage network is by universal three-phase and four-line insulation arrangement, only at lower family
Side is that ordinary user accesses single phase poaer supply by two lines, there are problems that cannot achieve three-phase switching, this will lead to three-phase four
There is the phenomenon that asymmetric electric current in line electricity consumption, cause the loss of distribution cable still high, spread of voltage.
Invention content
The present invention provides a kind of two line user's phasing switch devices of low pressure, overcome the deficiency of the above-mentioned prior art,
It can effectively solve to only have access single phase poaer supply existing for existing three-phase and four-line distribution cable, cannot achieve three-phase switching, running
There is asymmetric electric current in the process, causes loss high, the problem of quality of voltage difference.
The technical scheme is that realized by following measures：A kind of two line user's phasing switch device of low pressure,
Including the poles bus N terminals, the poles user N terminals, DC power supply and three groups of single-phase changeover modules, corresponding every group of single-phase switch groups
It is equipped with corresponding switching signal input terminal, the single-phase incoming end of user and bus terminals end, bus N pole terminals and user
The poles N terminals are electrically connected；Every group of single-phase changeover module includes electromagnetic relay and triode, and electromagnetic relay includes
It the first terminals of coil, the second winding wiring, the first terminals of moving contact switch, the second moving contact switch terminals and dynamic touches
Point snap switch, the first terminals of moving contact switch are electrically connected with the single-phase incoming end of corresponding user, the second movable contact
Switch terminal is electrically connected with corresponding bus terminals end, and there are one opened to be normally closed in three movable contact snap switches
It closes, other two is normal open switch；Triode is equipped with base stage, collector and emitter, and each base stage is cut with corresponding
It changes signal input part to be electrically connected, each emitter is electrically connected with the first terminals of corresponding coil, each
Second winding wiring is electrically connected by conducting wire and forms winding wiring tubercle, and each collector passes through conducting wire electricity
It links together and forms current collection tubercle；Current collection tubercle and winding wiring tubercle are electrically connected with the anode and cathode of DC power supply respectively
It is connected together.
Here is the further optimization and/or improvements to foregoing invention technical solution：
Normally closed protection switch can be in series between above-mentioned bus N pole terminals and the poles user N terminals.
Above-mentioned current collection tubercle can be electrically connected with the anode of DC power supply, winding wiring tubercle and DC power supply it is negative
Pole is electrically connected.
Structure of the invention is reasonable and compact, is coordinated by triode and electromagnetic relay, three-phase current can occurring not
When being more than symmetrically critical, keep the coil of corresponding electromagnetic relay conductive by control signal generator and triode, and then complete
Commutation process；It is simple to operate, it is time saving and energy saving, and three-phase switching can be fast implemented, it effectively avoids because having not in operational process
Symmetrical current causes loss high, the problem of quality of voltage difference；Manual operating signal generator can be used when in use, or pass through
Signal generator is connected to realization on terminal handler to automatically control, is achieved in remote control.
Description of the drawings
Attached drawing 1 is the circuit block diagram of preferred embodiment use state.
Coding in attached drawing is respectively：1 is the poles bus N terminals, and 2 be the poles user N terminals, and 3 be DC power supply, and 4 are
Switching signal input terminal, 5 be the single-phase incoming end of user, and 6 be bus terminals end, and 7 be electromagnetic relay, and 8 be triode, and 9 be line
Enclose the first terminals, 10 be the second terminals of coil, and 11 switch for normally closed protection, and 12 be the first terminals of moving contact switch, 13
It is movable contact snap switch for the second terminals of moving contact switch, 14,15 be winding wiring tubercle, and 16 be current collection tubercle, and 17 are
Three-phase and four-line distribution cable, 18 be user terminal, and 19 be signal generator.
Specific implementation mode
The present invention is not limited by following embodiments, can be determined according to the technique and scheme of the present invention with actual conditions specific
Embodiment.
In the present invention, for ease of description, the description of the relative position relation of each component is according to Figure of description 1
Butut mode be described, such as：The position relationship of front, rear, top, and bottom, left and right etc. is the Butut according to Figure of description
Direction determines.
With reference to embodiment and attached drawing, the invention will be further described：
As shown in Fig. 1, two line user's phasing switch device of low pressure, including the poles bus N terminals 1, user N pole wiring
End 2, DC power supply 3 and three groups of single-phase changeover modules, it is defeated that corresponding every group of single-phase switch groups are equipped with corresponding switching signal
Enter end 4, the single-phase incoming end 5 of user and bus terminals end 6, the poles bus N terminals 1 are connected electrically in one with the poles user N terminals 2
It rises；Every group of single-phase changeover module include electromagnetic relay 7 and triode 8, electromagnetic relay 7 include the first terminals of coil 9,
The second terminals of coil 10, the first terminals of moving contact switch 12, the second terminals of moving contact switch 13 and movable contact spring are opened
Close 14, the single-phase incoming end of the first terminals of moving contact switch 12 and corresponding user 5 is electrically connected, moving contact switch second
Terminals 13 are electrically connected with corresponding bus terminals end 6, and there are one opened to be normally closed in three movable contact snap switches 14
It closes, other two is normal open switch；Triode 8 is equipped with base stage, collector and emitter, and each base stage is cut with corresponding
It changes signal input part 4 to be electrically connected, each emitter is electrically connected with the first terminals of corresponding coil 9, respectively
The second terminals of a coil 10 are electrically connected by conducting wire and form winding wiring tubercle 15, and each collector passes through
Conducting wire is electrically connected and forms current collection tubercle 16；Current collection tubercle 16 and winding wiring tubercle 15 respectively with DC power supply 3
Anode and cathode are electrically connected.In use, by three bus terminals ends 6 respectively with three-phase and four-line distribution cable 17
A phase lines, B phase lines and C phase lines be electrically connected, by the N phase lines of the poles bus N terminals 1 and three-phase and four-line distribution cable 17
It is electrically connected, three switchings is believed at 2 equal accessing user end 18 of the single-phase incoming end 5 of three users and the poles user N terminals
Number input terminal 4 is electrically connected with signal generator 19 respectively；Since there are one be normal in three movable contact snap switches 14
Make and break is closed, and other two is normal open switch, and the single-phase incoming end 5 of user of corresponding normally closed switch and bus terminals end 6 are connected, i.e.,
One of the 6 corresponding three-phase and four-line distribution cable 17 of bus terminals end phase line is that user terminal 18 is powered, when there is three-phase
When electric current asymmetry is more than critical, the coil of corresponding electromagnetic relay 7 can be made to lead by control signal generator 19 and triode 8
Electricity, and then former normally closed switch is made to disconnect, and the corresponding normal open switch for waiting for commutation is closed, commutation process thus can be completed；
It is simple to operate, it is time saving and energy saving, and three-phase switching can be fast implemented, it effectively avoids because there is asymmetric electric current in operational process,
Cause loss high, the problem of quality of voltage difference；Manual operating signal generator 19 can be used when in use, or by sending out signal
Raw device 19 is connected to realization on terminal handler and automatically controls, and thus can enable the invention to realize remote control.
Two line user's phasing switch device of above-mentioned low pressure can be made further optimization and/or improvements according to actual needs：
As shown in Fig. 1, normally closed protection switch 11 is in series between the poles bus N terminals 1 and the poles user N terminals 2.
During use, when there is emergency case that can open normally closed protection switch 11 when needing power-off, its safety used can be improved in this way
Property.
As shown in Fig. 1, current collection tubercle 16 and the anode of DC power supply 3 are electrically connected, winding wiring tubercle 15 with
The cathode of DC power supply 3 is electrically connected.
The above technical characteristic constitutes highly preferred embodiment of the present invention, is imitated with stronger adaptability and best implementation
Fruit can increase and decrease non-essential technical characteristic, to meet the needs of different situations according to actual needs.
Claims (4)
1. a kind of two line user's phasing switch device of low pressure, it is characterised in that including the poles bus N terminals, the poles user N terminals,
DC power supply and three groups of single-phase changeover modules, corresponding every group of single-phase switch groups be equipped with corresponding switching signal input terminal,
The single-phase incoming end of user and bus terminals end, bus N pole terminals are electrically connected with the poles user N terminals；Every group single-phase
Changeover module include electromagnetic relay and triode, electromagnetic relay include the first terminals of coil, the second winding wiring,
The first terminals of moving contact switch, the second moving contact switch terminals and movable contact snap switch, the first wiring of moving contact switch
End is electrically connected with the single-phase incoming end of corresponding user, the second moving contact switch terminals and corresponding bus terminals end electricity
It links together, there are one being normally closed switch in three movable contact snap switches, other two is normal open switch；On triode
Equipped with base stage, collector and emitter, each base stage is electrically connected with corresponding switching signal input terminal, each transmitting
It is extremely electrically connected with the first terminals of corresponding coil, each second winding wiring is connected electrically in one by conducting wire
Winding wiring tubercle is played and is formed, each collector is electrically connected by conducting wire and forms current collection tubercle；Current collection tubercle
It is electrically connected respectively with the anode and cathode of DC power supply with winding wiring tubercle；Further include at signal generator and terminal
Device is managed, three switching signal input terminals are electrically connected with signal generator respectively, signal generator and terminal handler electricity
It links together.
2. two line user's phasing switch device of low pressure according to claim 1, it is characterised in that bus N pole terminals and use
Normally closed protection switch is in series between the terminals of the family poles N.
3. two line user's phasing switch device of low pressure according to claim 1, it is characterised in that current collection tubercle and direct current
The anode in source is electrically connected, and the cathode of winding wiring tubercle and DC power supply is electrically connected.
4. two line user's phasing switch device of low pressure according to claim 2, it is characterised in that current collection tubercle and direct current
The anode in source is electrically connected, and the cathode of winding wiring tubercle and DC power supply is electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610111445.6A CN105610134B (en) | 2016-02-29 | 2016-02-29 | Two line user's phasing switch device of low pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610111445.6A CN105610134B (en) | 2016-02-29 | 2016-02-29 | Two line user's phasing switch device of low pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105610134A CN105610134A (en) | 2016-05-25 |
| CN105610134B true CN105610134B (en) | 2018-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610111445.6A Active CN105610134B (en) | 2016-02-29 | 2016-02-29 | Two line user's phasing switch device of low pressure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203396844U (en) * | 2013-06-08 | 2014-01-15 | 广东明阳龙源电力电子有限公司 | DC bus ground insulation resistance detection system used for photovoltaic power generation system |
| CN103915852A (en) * | 2014-04-08 | 2014-07-09 | 中国计量学院 | Flexible switching system based on single-phase grid-connected inverter and switching method thereof |
| CN104852394A (en) * | 2015-05-07 | 2015-08-19 | 陈鸽 | Power load balancing system applied to low-voltage power distribution network |
| CN104934994A (en) * | 2015-07-01 | 2015-09-23 | 国家电网公司 | Low-voltage phase-change switch |
| CN105305470A (en) * | 2015-08-07 | 2016-02-03 | 北京中电博达科技有限公司 | Low-voltage load balance adjustment device for power distribution network, and automatic phase-change switch |
| CN205453109U (en) * | 2016-02-29 | 2016-08-10 | 国网新疆电力公司昌吉供电公司 | Two line user phasing switch devices of low pressure |
-
2016
- 2016-02-29 CN CN201610111445.6A patent/CN105610134B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203396844U (en) * | 2013-06-08 | 2014-01-15 | 广东明阳龙源电力电子有限公司 | DC bus ground insulation resistance detection system used for photovoltaic power generation system |
| CN103915852A (en) * | 2014-04-08 | 2014-07-09 | 中国计量学院 | Flexible switching system based on single-phase grid-connected inverter and switching method thereof |
| CN104852394A (en) * | 2015-05-07 | 2015-08-19 | 陈鸽 | Power load balancing system applied to low-voltage power distribution network |
| CN104934994A (en) * | 2015-07-01 | 2015-09-23 | 国家电网公司 | Low-voltage phase-change switch |
| CN105305470A (en) * | 2015-08-07 | 2016-02-03 | 北京中电博达科技有限公司 | Low-voltage load balance adjustment device for power distribution network, and automatic phase-change switch |
| CN205453109U (en) * | 2016-02-29 | 2016-08-10 | 国网新疆电力公司昌吉供电公司 | Two line user phasing switch devices of low pressure |
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| CN105610134A (en) | 2016-05-25 |
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