CN108565827A - Protector for using electricity - Google Patents
Protector for using electricity Download PDFInfo
- Publication number
- CN108565827A CN108565827A CN201810374048.7A CN201810374048A CN108565827A CN 108565827 A CN108565827 A CN 108565827A CN 201810374048 A CN201810374048 A CN 201810374048A CN 108565827 A CN108565827 A CN 108565827A
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- CN
- China
- Prior art keywords
- break
- unit
- transformer
- protector
- make unit
- 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
Links
- 230000005611 electricity Effects 0.000 title claims abstract description 28
- 230000001012 protector Effects 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 13
- 239000011261 inert gas Substances 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 230000009183 running Effects 0.000 abstract description 5
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
Landscapes
- Protection Of Static Devices (AREA)
Abstract
A kind of Protector for using electricity, including：The primary side of transformer, transformer is equipped with primary main coil and primary ancillary coil, the primary main coil of transformer are connect with mains supply；The secondary coil of transformer provides power supply to user load；The primary ancillary coil of first break-make unit, transformer is connected in parallel by the first break-make unit and primary main coil；Current measuring element, for being detected by electric current to user load；Control module generates drive control and the second break-make unit to the first break-make unit for the input signal according to current measuring element, and for circuit where being connected on the secondary coil of transformer, protection is provided for power load.Identify whether transformer is in light condition according to the electric current of power load by current measuring element, in light condition, the first break-make unit is connected, makes primary ancillary coil and primary main coil parallel running, to reduce power consumption, the effectively save energy of the transformer in zero load.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of Protector for using electricity.
Background technology
Currently, power consumer is when using alternating current, generally directly from common transformer direct lead wire to indoor, due to electric power
The neutral ground of part common transformer in system causes power consumer may when contacting indoor single power cable
Electric shock accidents occurs, causes personal injury；In the prior art, it is the Electrical Safety of raising user, traditional electric protection device
The general electrical isolation realized using transformer between user side cable and power system device, to reduce the machine of user's electric shock
Meeting.Then, due to the periodicity of user load, cause the transformer in electric protection device in the close zero load of electricity consumption idle period
Operation, causes larger power consumption.
Invention content
Based on this, it is necessary to for electric protection device the problem of electricity consumption idle period causes larger power consumption, carry
For a kind of Protector for using electricity.
A kind of Protector for using electricity, including：
Transformer, for realizing the electrical isolation between mains supply and user's lateral load, the primary side of the transformer
It is connect with mains supply equipped with primary main coil and primary ancillary coil, the primary main coil of the transformer；The transformer
Secondary coil to user load provide power supply；
The primary ancillary coil of first break-make unit, the transformer passes through the first break-make unit and the primary master
Parallel connection of coil；
Current measuring element, for being detected by electric current to user load；
Control module is generated for the input signal according to the current measuring element to the first break-make unit
Drive control, and
Second break-make unit, it is on a preset condition based, described for circuit where being connected on the secondary coil of the transformer
The electric current in circuit where control module cuts off the secondary coil of the transformer by the second break-make unit, to be born for electricity consumption
It carries and protection is provided.
Above-mentioned Protector for using electricity identifies whether transformer is in by current measuring element according to the electric current of power load
The first break-make unit is connected in light condition in light condition, makes primary ancillary coil and primary main coil parallel running, from
And reduce power consumption, the effectively save energy of the transformer in zero load.
The control module includes that fore-stage driver unit, processing chip and rear class driving are single in one of the embodiments,
Member；The processing chip controls the working condition of the first break-make unit, the processing core by the fore-stage driver unit
Piece controls the working condition of the second break-make unit control by the rear class driving unit.
The second break-make unit switchs for plasma gas in one of the embodiments, the second break-make unit
Tube body including sealed set, the first conductive electrode for being applied in the tube body side are led through the second of the tube body other side
The impulse generator of electrode, the trigger electrode through the tube body and the connection trigger electrode；First conductive electrode is in
The end that end in the tube body is in second conductive electrode in tube body is correspondingly arranged, and the trigger electrode is in described
End in tube body is located between the end and the end of second conductive electrode of first conductive electrode, the impulse generator
Also it is connect with second conductive electrode；The impulse generator is connect with the control module.
Inert gas is filled in the tube body in one of the embodiments,.
Further include third break-make unit in one of the embodiments, the primary main coil passes through the third break-make
Unit is connect with mains supply, and the processing chip controls the conducting of the third break-make unit by the fore-stage driver unit
And disjunction.
The control module further includes input detection unit in one of the embodiments, the input detection unit
Output end connects the processing chip, and the processing chip is according to the input signal of the input detection unit and by before described
Grade driving unit controls the conducting and disjunction of the third break-make unit.
The control module further includes converting unit in one of the embodiments, and the current measuring element detection obtains
The signal obtained is input to the processing chip after converting unit adjustment.
Further include voltage sampling element, the voltage sampling element and the secondary coil in one of the embodiments,
It is arranged in parallel, the voltage sampling element is to the control module output voltage sampled signal.
The voltage sampling element is digital voltmeter in one of the embodiments,.
Further include rectification module in one of the embodiments, mains supply rectification is to described by the rectification module
The stabilizing low voltage direct current that control module provides.
Description of the drawings
Fig. 1 is the circuit diagram of the Protector for using electricity of the preferred embodiment of the present invention；
Fig. 2 is the structure chart of the control module and the second onunit in Fig. 1.
Specific implementation mode
It to facilitate the understanding of the present invention, below will be to invention is more fully described.But the present invention can be to be permitted
Mostly different form is realized, however it is not limited to embodiment described herein.Make on the contrary, purpose of providing these embodiments is
It is more thorough and comprehensive to the understanding of the disclosure.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Please refer to Fig.1 and Fig. 2, for the Protector for using electricity 100 of a better embodiment of the invention, for for user with
Protection is provided in electric process.The Protector for using electricity 100 includes transformer 10, for realizing mains supply and user's lateral load it
Between electrical isolation, the primary side of transformer 10 is equipped with primary main coil L1 and primary ancillary coil L2, the primary of transformer 10
Main coil L1 is connect with mains supply；The secondary coil L3 of transformer 10 to user load provide power supply, the first break-make unit 20,
The primary ancillary coil L2 of transformer 10 is connected in parallel by the first break-make unit 20 and primary main coil L1, current measuring element
30, for being detected by electric current to user load, control module 40, for being believed according to the input of current measuring element 30
Number and generate to the drive control and the second break-make unit 50 of the first break-make unit 20, the pair for being connected on transformer 10
Circuit where L3, on a preset condition based, the secondary side that control module 40 passes through 50 disconnecting transformer 10 of the second break-make unit are enclosed in sideline
The electric current in circuit where coil L3, to provide protection for power load.The electricity of power load is detected by current measuring element 30
Stream, in light condition, is connected the first break-make unit 20, makes primary auxiliary to identify whether transformer 10 is in light condition
Coil L2 and primary main coil L1 parallel runnings, to reduce power consumption, effectively save energy of the transformer 10 in zero load
Source.
Specifically, control module 40 includes fore-stage driver unit 41, processing chip 42 and rear class driving unit 43；Processing
Chip 42 controls the working condition of the first break-make unit 20 by fore-stage driver unit 41, and processing chip 42 is driven single by rear class
Member 43 controls the working condition of the second break-make unit 50 control.
Whether processing chip 42 determines transformer 10 close to light condition according to the output signal of current measuring element 30,
When close to light condition, the first break-make unit 20 is adjusted by fore-stage driver unit 41 and enters conducting state, makes primary auxiliary line
L2 and primary main coil L1 parallel runnings are enclosed, to reduce excitation consumption, saves electric energy；When the load of transformer 10T1 is close to volume
When determining power, processing chip 42 adjusts the first break-make unit 20 by fore-stage driver unit 41 and enters disjunction state, makes primary auxiliary
Index contour circle L2 is isolated with primary main coil L1.
Under normal circumstances, processing chip 42 controls the conducting of the second break-make unit 50 by rear class driving unit 43, so as to
Electric energy is provided to power load；Processing chip 42 determines whether user load is according to the output signal of current measuring element 30
Overload, in the case where power load is in overload, processing chip 42 controls the second break-make by rear class driving unit 43
50 disjunction of unit, to provide overload protection for power load.
In the present embodiment, the first break-make unit 20 controls the connection of primary ancillary coil L2 by contactor, specifically
The Same Name of Ends on ground, primary ancillary coil L2 is connect by the contact of contactor with the Same Name of Ends of primary main coil L1；In another reality
It applies in mode, the first break-make unit 20 controls the connection of primary ancillary coil L2 by relay.
Preferably, it is the use of reduction contact, improves the service life of the second break-make unit 50, and avoids the generation of electric arc,
Second break-make unit 50 switchs for plasma gas, and the second break-make unit 50 includes the tube body 51 of sealed set, is applied in tube body
First conductive electrode 52 of 51 sides, the second conductive electrode 53 through 51 other side of tube body, the trigger electrode 54 through tube body 51 and
Connect the impulse generator 55 of trigger electrode 54；The end that first conductive electrode 52 is in tube body 51 is in the second conductive electrode 53
End in tube body 51 is correspondingly arranged, and trigger electrode 54 is in the end in tube body 51 and is located at the end of the first conductive electrode 52 and the
Between the end of two conductive electrodes 53, impulse generator 55 is also connect with the second conductive electrode 53；Impulse generator 55 and control module
40 connections.
Specifically, it is reliable conducting and disjunction, inert gas, such as neon is filled in tube body 51.Second break-make unit
50 are connected on the institute of secondary coil L3 and power load in the loop by the first conductive electrode 52 and the second conductive electrode 53.
Processing chip 42 sends out drive signal by rear class driving unit 43 to impulse generator 55；A kind of implementation wherein
In mode, when processing chip 42 controls the conducting of the second break-make unit 50, rear class driving unit 43 is inputted to impulse generator 55
After driving current potential, impulse generator 55 to obtain driving current potential, apply between trigger electrode 54 and the second conductive electrode 53 lasting
High-voltage pulse, the inert gas between trigger electrode 54 and the second conductive electrode 53 generate charged ion because of high pressure ionization,
It is connected by charged ion between first conductive electrode 52 and the second conductive electrode 53, also, is led with second in the first conductive electrode 52
Electrode 53 be connected and breaking course in, will not generate electric arc to the outside of tube body 51, be applicable to electrical security requirement compared with
Big occasion.
For convenience of in mains voltage exception, the connection of primary main coil L1 and mains supply, electricity protection are cut off
Device 100 further includes third break-make unit 60, and primary main coil L1 is connect by third break-make unit 60 with mains supply, processing
Chip 42 controls the conducting and disjunction of third break-make unit 60 by fore-stage driver unit 41.
To detect the voltage level of mains supply automatically, control module 40 further includes input detection unit 44, input detection
The output end connection processing chip 42 of unit 44, processing chip 42 passes through prime according to the input signal of input detection unit 44
Driving unit 41 controls the conducting and disjunction of third break-make unit 60.
Specifically, the input terminal of input detection unit 44 connects mains supply.
Control module 40 further includes converting unit 45, and the converted unit 45 of 30 detected signal of current measuring element is adjusted
Processing chip 42 is input to after whole.
Specifically, current measuring element 30 is current transformer, and converting unit 45 utilizes rectifier bridge by current measuring element
The AC signal of 30 outputs is converted to direct current and is input to processing chip 43 after being depressured, and processing chip 43 is defeated to converting unit 45
Go out signal to be sampled, to determine size of the user load by electric current.
When short circuit occur in user load both ends, to cut off the places secondary coil L3 circuit, Protector for using electricity 100 in time
Further include voltage sampling element 70, voltage sampling element 70 is arranged in parallel with secondary coil L3, and voltage sampling element 70 is to control
40 output voltage sampled signal of module.
Specifically, voltage sampling element 70 is digital voltmeter.
When processing chip 42 confirms power load short circuit by voltage sampling element 70, processing chip 42 is driven by rear class
Moving cell 43 makes 50 disjunction of the second break-make unit, to cut off the place circuit of secondary coil L3 and power load.
To provide direct current supply to control module 40, Protector for using electricity 100 further includes rectification module 80, rectification module 80
It is the stabilizing low voltage direct current provided to control module 40 by mains supply rectification.Specifically, the output voltage of rectification module 80 exists
Within the scope of 3-25V, such as 3.3V or 5V.
Specifically, rectification module 80 is equipped with the first ac input end and the second ac input end；The first of rectification module 80
Ac input end and the second ac input end are connect with mains supply respectively.Rectification module 80 is equipped with DC output end, rectification mould
The stabilizing low voltage direct current that the DC output end of block 80 is provided to control module 40.
It notifies user, Protector for using electricity 100 to take overload protection or short-circuit protection to power load for convenience, controls
Module 40 further includes the alarm unit 46 for including connection processing chip 42；After overload protection or short-circuit protection, alarm unit 46
According to the control of processing chip 42 prompt tone is sent out using piezoelectric ceramic piece.
For convenience of the relevant current or voltage detection data of display, control module 40 further includes the aobvious of connection processing chip 42
Show that unit 47, display unit 47 show current or voltage detection data by charactron or display screen.
Control module 40 further includes the key-press input unit 48 of connection processing chip 42, can be real by key-press input unit 48
The switching of the display data of existing display unit 47 or the adjustment of protection act threshold values.
In the present embodiment, the electric current of power load is detected by current measuring element, to identify transformer whether in sky
The first break-make unit is connected in light condition in load state, makes primary ancillary coil and primary main coil parallel running, to
Reduce power consumption, the effectively save energy of the transformer in zero load.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of Protector for using electricity, which is characterized in that including：
Transformer, for realizing the electrical isolation between mains supply and user's lateral load, the primary side of the transformer is equipped with
Primary main coil and primary ancillary coil, the primary main coil of the transformer are connect with mains supply；The pair of the transformer
Sideline is enclosed to user load and provides power supply；
The primary ancillary coil of first break-make unit, the transformer passes through the first break-make unit and the primary main coil
It is connected in parallel；
Current measuring element, for being detected by electric current to user load；
Control module generates the driving to the first break-make unit for the input signal according to the current measuring element
Control；And
Second break-make unit, for circuit where being connected on the secondary coil of the transformer, on a preset condition based, the control
The electric current in circuit where module cuts off the secondary coil of the transformer by the second break-make unit, to be carried for power load
For protection.
2. Protector for using electricity according to claim 1, which is characterized in that the control module includes that prime driving is single
Member, processing chip and rear class driving unit；The processing chip controls the first break-make list by the fore-stage driver unit
The working condition of member, the processing chip control the work shape that the second break-make unit controls by the rear class driving unit
State.
3. Protector for using electricity according to claim 2, which is characterized in that the second break-make unit is plasma gas
Switch, the second break-make unit include the tube body of sealed set, are applied in the first conductive electrode of the tube body side, run through institute
State the pulse generation of the second conductive electrode, the trigger electrode through the tube body and the connection trigger electrode of the tube body other side
Device；End that first conductive electrode is in the tube body is corresponding with the end that second conductive electrode is in tube body to be set
It sets, the trigger electrode is in the end in the tube body and is located at the end of first conductive electrode and second conductive electrode
Between end, the impulse generator is also connect with second conductive electrode；The impulse generator connects with the control module
It connects.
4. Protector for using electricity according to claim 3, which is characterized in that be filled with inert gas in the tube body.
5. Protector for using electricity according to claim 2, which is characterized in that further include third break-make unit, the primary
Main coil is connect by the third break-make unit with mains supply, and the processing chip is controlled by the fore-stage driver unit
The conducting and disjunction of the third break-make unit.
6. Protector for using electricity according to claim 5, which is characterized in that the control module further includes that input detection is single
The output end of member, the input detection unit connects the processing chip, and the processing chip is according to the input detection unit
Input signal and the conducting and disjunction of the third break-make unit are controlled by the fore-stage driver unit.
7. Protector for using electricity according to claim 2, which is characterized in that the control module further includes converting unit,
The signal that the current sample element acquisition obtains is input to the processing chip after converting unit adjustment.
8. Protector for using electricity according to claim 2, which is characterized in that further include voltage sampling element, the voltage
Sampling element is arranged in parallel with the secondary coil, and the voltage sampling element is sampled to the control module output voltage to be believed
Number.
9. Protector for using electricity according to claim 8, which is characterized in that the voltage sampling element is digital voltage
Table.
10. Protector for using electricity according to claim 1, which is characterized in that further include rectification module, the rectification module
It is the stabilizing low voltage direct current provided to the control module by mains supply rectification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810374048.7A CN108565827A (en) | 2018-04-24 | 2018-04-24 | Protector for using electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810374048.7A CN108565827A (en) | 2018-04-24 | 2018-04-24 | Protector for using electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108565827A true CN108565827A (en) | 2018-09-21 |
Family
ID=63536623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810374048.7A Pending CN108565827A (en) | 2018-04-24 | 2018-04-24 | Protector for using electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108565827A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466041A (en) * | 1983-02-01 | 1984-08-14 | Storage Technology Corporation | Fault protection system for power supplies that use ferro-resonant transformers |
| RU2212745C2 (en) * | 2001-03-28 | 2003-09-20 | Шевчук Александр Сергеевич | Constant voltage supply |
| CN105871221A (en) * | 2016-03-25 | 2016-08-17 | 中山市尊宝实业有限公司 | Transformer system with low no-load loss |
| CN107834511A (en) * | 2017-11-30 | 2018-03-23 | 苏州汇川技术有限公司 | More secondary transformer secondary circuit short-circuit protection devices and method |
| CN208226547U (en) * | 2018-04-24 | 2018-12-11 | 东莞市博通电气设备工程有限公司 | Protector for using electricity |
| CN208638012U (en) * | 2018-04-24 | 2019-03-22 | 东莞市博通电气设备工程有限公司 | Protector for using electricity |
-
2018
- 2018-04-24 CN CN201810374048.7A patent/CN108565827A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4466041A (en) * | 1983-02-01 | 1984-08-14 | Storage Technology Corporation | Fault protection system for power supplies that use ferro-resonant transformers |
| RU2212745C2 (en) * | 2001-03-28 | 2003-09-20 | Шевчук Александр Сергеевич | Constant voltage supply |
| CN105871221A (en) * | 2016-03-25 | 2016-08-17 | 中山市尊宝实业有限公司 | Transformer system with low no-load loss |
| CN107834511A (en) * | 2017-11-30 | 2018-03-23 | 苏州汇川技术有限公司 | More secondary transformer secondary circuit short-circuit protection devices and method |
| CN208226547U (en) * | 2018-04-24 | 2018-12-11 | 东莞市博通电气设备工程有限公司 | Protector for using electricity |
| CN208638012U (en) * | 2018-04-24 | 2019-03-22 | 东莞市博通电气设备工程有限公司 | Protector for using electricity |
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