CN203574350U - Intelligent residual current protection device - Google Patents
Intelligent residual current protection device Download PDFInfo
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- CN203574350U CN203574350U CN201320750244.2U CN201320750244U CN203574350U CN 203574350 U CN203574350 U CN 203574350U CN 201320750244 U CN201320750244 U CN 201320750244U CN 203574350 U CN203574350 U CN 203574350U
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- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims abstract description 22
- 230000003993 interaction Effects 0.000 claims abstract description 11
- 230000005611 electricity Effects 0.000 claims description 27
- 230000001681 protective effect Effects 0.000 claims description 21
- 230000006837 decompression Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model discloses an intelligent residual current protection device. The device is electrically connected with a power supply side line which is provided with a phase I, a phase II, a phase III and a phase N. The intelligent residual current protection device comprises a power supply module, a microprocessor module electrically connected with the power supply module, an electric switching-on/off module electrically connected with the power supply module and capable of causing the phase I, the phase II and the phase III to be switched on/off, a residual current sampling module electrically connected with the power supply module, and a RS485 communication module, wherein the microprocessor module is in signal connection with the residual current sampling module, the electric switching-on/off module and the RS485 communication module. The intelligent residual current protection device further comprises a power line carrier communication module and a man-machine interaction module, wherein the power line carrier communication module is electrically connected with the phase II and the phase N, the power line carrier communication module is in signal connection with the RS485 communication module, and the man-machine interaction module is in signal connection with the microprocessor module. The intelligent residual current protection device has the following advantages: installation and maintenance are convenient, the operation cost is low, and the operation and maintenance costs are reduced.
Description
Technical field
The utility model relates to a kind of intelligent residual current protective device.
Background technology
Existing Aftercurrent protecting equipment; as the CN201887426U of Chinese patent database bulletin; comprise a microprocessor module and power subsystem; power subsystem electricity connects microprocessor module; this microprocessor module signal connects 485 communication modules, status display unit, data display unit, intelligent machine formula magnetic maintenance residual current switch, signal processing unit; this signal processing unit electricity connects data acquisition unit, and this data acquisition unit electricity connects residual current operated protective device.This existing Aftercurrent protecting equipment has following deficiency: transfer of data is complicated, installs loaded down with trivial detailsly, and operating cost is high.
Utility model content
The utility model provides a kind of intelligent residual current protective device, and it has overcome the existing deficiency of Aftercurrent protecting equipment in background technology.
The technical scheme adopting that the utility model solves its technical problem is:
A kind of intelligent residual current protective device, electricity connects mains side circuit, this mains side circuit has I phase, II phase, III phase and N phase, this intelligent residual current protective device comprises that a power module, an electricity connect the microprocessor module of power module, an electricity and connect power module and can control the electric closing-opening module that I phase, II phase, III be switched on or switched off, residual current sampling module and the RS485 communication module that an electricity connects power module, and this microprocessor module signal connects residual current sampling module, electric closing-opening module and RS485 communication module; Also comprise a power line carrier, PLC module and a human-computer interaction module; This power line carrier, PLC module electricity connects II phase and N phase, and this power line carrier, PLC module by signal connects RS485 communication module; This human-computer interaction module signal connects microprocessor module.
Among one embodiment: this power module electricity connects II phase and N phase, and at least comprise decompression rectifier filter circuit.
Among one embodiment: this residual current sampling module comprises electric four zero sequence current mutual inductors that connect I phase, II phase, III phase, N phase respectively.
Among one embodiment: also comprise that an electricity connects the operating current sampling module of power module, this microprocessor module signal connects operating current sampling module.
Among one embodiment: this operating current sampling module comprises electric three current transformers that connect I phase, II phase, III phase respectively.
Among one embodiment: also comprise that an electricity connects the short circuit protection module of I phase, II phase, III phase, this short circuit protection module signal connects electric closing-opening module.
Among one embodiment: this power line carrier, PLC module adopts carrier channel chip TCC081C.
Among one embodiment: this power line carrier, PLC module adopts carrier channel chip SSC1641.
The technical program is compared with background technology, and its tool has the following advantages:
Intelligent residual current protective device comprises power line carrier, PLC module and human-computer interaction module, by power line carrier, PLC module, can use PLC technology to transmit data and Long-distance Control, therefore can solve the problem that transfer of data is complicated and installation is loaded down with trivial details, and produce following technique effect: a, can adopt plug and pull mode, installation and maintenance is convenient, operating cost is low, reduces operation and maintenance cost; The cooperations such as b, PLC technology and power module, microprocessor module, electric closing-opening module, residual current sampling module, therefore provide electric energy without external power supply; C, whole intelligent residual current protective device have electric leakage, smart electronics overcurrent protection function, have comprehensive protection function.
Also comprise that an electricity connects the short circuit protection module of I phase, II phase, III phase, this short circuit protection module signal connects electric closing-opening module, has short-circuit protection function.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 has illustrated the schematic diagram of the intelligent residual current protective device of the present embodiment.
Embodiment
Please refer to Fig. 1, a kind of intelligent residual current protective device, electricity connects mains side circuit, and this mains side circuit has I phase, II phase, III phase and N phase.This intelligent residual current protective device comprises a power module, a microprocessor module, an electric closing-opening module, a residual current sampling module, a RS485 communication module, a power line carrier, PLC module, a human-computer interaction module, an operating current sampling module and a short circuit protection module.
This power module electricity connects II phase and the N phase of mains side circuit, and at least comprises that decompression rectifier filter circuit, electricity meet II phase and N to obtain 220V alternating current, this 220V alternating current after the filtering of decompression rectifier filter circuit step-down rectifier for other module.This power module electricity connects microprocessor module, electric closing-opening module, residual current sampling module, residual current sampling module and thinks that they provide electric energy.
This microprocessor chip is selected STC12C5A60S2 family chip, with the output signal to each module process, output signal is controlled each module and realize various logic and control function.This microprocessor module signal connects electric closing-opening module, residual current sampling module, RS485 communication module, human-computer interaction module, operating current sampling module.
This electric closing-opening module connects I phase, II phase, the III phase of mains side circuit, to control I phase, II phase, III, is switched on or switched off, and this electric closing-opening module can directly adopt the on/off switch module of prior art.Among the present embodiment, this electric closing-opening module is subject to microprocessor module output signal to control execution electric switch-on and separating brake moves.
This residual current sampling module comprises that respectively electricity connects four zero sequence current mutual inductors of I phase, II phase, III phase, N phase, and the residual current of circuit is converted into voltage signal by zero sequence current mutual inductor, then exports microprocessor module to and carry out A/D conversion process.
This RS485 communication module signal connects microprocessor module and power line carrier, PLC module, and the asynchronous serial communication that realizes microprocessor is converted to the communication of half-duplex RS 485 standards, complete and power carrier module between data interaction.
This power line carrier, PLC module electricity connects mains side circuit II phase and N phase, and this power line carrier, PLC module by signal connects RS485 communication module.This power line carrier, PLC module is used the carrier channel chip TCC081C of Qingdao Dinkum company or the carrier channel chip SSC1641 of Qingdao company of Neusoft to realize carrier communication function, its core technology is to utilize orthogonal code to carry out data spread spectrum transmission, use the timesharing of power line zero passage to obtain being beneficial to most the 3.3ms differential period synchronization transmission of transmission, than the communication capacity of simple use spread spectrum mode and stability, have huge raising; Built-in DSP digital signal processing module guarantees carrier communication computation requirement, uses AD sample mode to carry out spread spectrum counting, and antijamming capability increases greatly.
This human-computer interaction module signal connects microprocessor module, and it is such as be display screen etc., in order to complete each electrical quantity and to install the demonstration of intrinsic key parameter and the working current value installing and rated residual operating current value isoparametric arranged to demonstration.
This short circuit protection module electricity connects I phase, II phase, III phase; and signal connects electric closing-opening module; it can directly adopt existing short circuit protection module; for example the temperature distortion under the large function of current of built-in bimetal leaf promotes to produce control signal; control signal is controlled electric closing-opening module separating brake, and cutting-off controlling circuit plays a protective role.
The above, it is only the utility model preferred embodiment, therefore can not limit according to this scope that the utility model is implemented, the equivalence of doing according to the utility model the scope of the claims and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (8)
1. an intelligent residual current protective device, electricity connects mains side circuit, this mains side circuit has I phase, II phase, III phase and N phase, this intelligent residual current protective device comprises a power module, one electricity connects the microprocessor module of power module, one electricity connects power module and can control I phase, II phase, the electric closing-opening module that III is switched on or switched off, one electricity connects residual current sampling module and a RS485 communication module of power module, this microprocessor module signal connects residual current sampling module, electric closing-opening module and RS485 communication module, it is characterized in that: also comprise a power line carrier, PLC module and a human-computer interaction module, this power line carrier, PLC module electricity connects II phase and N phase, and this power line carrier, PLC module by signal connects RS485 communication module, this human-computer interaction module signal connects microprocessor module.
2. a kind of intelligent residual current protective device according to claim 1, is characterized in that: this power module electricity connects II phase and N phase, and at least comprises decompression rectifier filter circuit.
3. a kind of intelligent residual current protective device according to claim 1, is characterized in that: this residual current sampling module comprises electric four zero sequence current mutual inductors that connect I phase, II phase, III phase, N phase respectively.
4. a kind of intelligent residual current protective device according to claim 1, is characterized in that: also comprise that an electricity connects the operating current sampling module of power module, this microprocessor module signal connects operating current sampling module.
5. a kind of intelligent residual current protective device according to claim 4, is characterized in that: this operating current sampling module comprises electric three current transformers that connect I phase, II phase, III phase respectively.
6. according to a kind of intelligent residual current protective device described in any one in claim 1 to 5, it is characterized in that: also comprise that an electricity connects the short circuit protection module of I phase, II phase, III phase, this short circuit protection module signal connects electric closing-opening module.
7. according to a kind of intelligent residual current protective device described in any one in claim 1 to 5, it is characterized in that: this power line carrier, PLC module adopts carrier channel chip TCC081C.
8. according to a kind of intelligent residual current protective device described in any one in claim 1 to 5, it is characterized in that: this power line carrier, PLC module adopts carrier channel chip SSC1641.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320750244.2U CN203574350U (en) | 2013-11-25 | 2013-11-25 | Intelligent residual current protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320750244.2U CN203574350U (en) | 2013-11-25 | 2013-11-25 | Intelligent residual current protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574350U true CN203574350U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320750244.2U Expired - Fee Related CN203574350U (en) | 2013-11-25 | 2013-11-25 | Intelligent residual current protection device |
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| CN (1) | CN203574350U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377824A (en) * | 2014-11-18 | 2015-02-25 | 柳州市金旭节能科技有限公司 | Monitoring system of low-voltage power distribution transformer |
| CN104377822A (en) * | 2014-11-18 | 2015-02-25 | 柳州市金旭节能科技有限公司 | Low-voltage distribution area monitoring system |
-
2013
- 2013-11-25 CN CN201320750244.2U patent/CN203574350U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377824A (en) * | 2014-11-18 | 2015-02-25 | 柳州市金旭节能科技有限公司 | Monitoring system of low-voltage power distribution transformer |
| CN104377822A (en) * | 2014-11-18 | 2015-02-25 | 柳州市金旭节能科技有限公司 | Low-voltage distribution area monitoring system |
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| 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: 20140430 Termination date: 20201125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |