CN201726096U - Short circuit protecting device of switching electrical equipment - Google Patents
Short circuit protecting device of switching electrical equipment Download PDFInfo
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- CN201726096U CN201726096U CN2009200460118U CN200920046011U CN201726096U CN 201726096 U CN201726096 U CN 201726096U CN 2009200460118 U CN2009200460118 U CN 2009200460118U CN 200920046011 U CN200920046011 U CN 200920046011U CN 201726096 U CN201726096 U CN 201726096U
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Abstract
The utility model relates to a short circuit protecting device of switching electrical equipment, which belongs to the technical field of power distribution and comprises a protecting device body, wherein a signal sampling and inputting module is arranged in the protecting device body. The utility model is characterized in that an output end of the signal sampling and inputting module is connected into an input end of a tripper driving module via a micro-processing module, an input end of the signal sampling and inputting module is connected with an output end of a current signal amplifying device, an output end of the current signal amplifying device is respectively connected into input ends of a data converting device and a comparing device, output ends of the data converting device and the comparing device are connected into an input end of a microprocessor, and an output end of the microprocessor is connected with the input end of the tripper driving module, so the overall design is compact, the signal transmission mode between the devices is simple, the action has good reliability and good anti-interference ability, the reliability is high, and the signals can be judged accurately and treated quickly.
Description
Technical field
The utility model relates to a kind of protective device, relates in particular to a kind of short-circuit protection device for switching device, belongs to the distribution technique field.
Should be used for seeing with regard to prior art; control in the electrical equipment and protection switch need well combine the function of various separating components such as circuit breaker, contactor, thermal relay, isolator, earth leakage protective device, under-voltage protection relay, starter, the time relay, transmitter, measurement instrument transformer together, make every effort to cooperate with protective feature, the control characteristic of each discrete component adapt.
But Just because of this, existing electrical short-circuit protective device complex structure, and occur often can not correctly judging when unusual that current state is fault or disturbs.Tend to cause mishandling, the mistake short circuit or the damage electrical equipment.Simultaneously, its deterministic process often needs to rely on the external short circuit detection module, has increased consuming time.Therefore, existing protection switch can't be realized a quick right judgement, can't comparatively apply in the extensive fields.
The purpose of this utility model is to overcome the above problem that prior art exists, and a kind of short-circuit protection device for switching device is provided.
For realizing a kind of short-circuit protection device for switching device of the purpose of this utility model; comprise the protective device body; be provided with the signal sampling input module in it; wherein: the output of described signal sampling input module; be connected into the input of release driver module by micro treatment module; micro treatment module comprises the A/D modular converter at least; interrupt system and data processing unit; and the A/D modular converter is by A/D converter; the A/D data reducer; data comparator each has the interconnected composition of FPDP; the output of signal sampling input module connects the input of A/D converter by sampling channel; the output of A/D converter is connected into the input of A/D data reducer and data comparator respectively; the output of A/D data reducer and interrupt system all inserts the input of data processing unit, and the output of data processing unit connects the input of release driver module.
Further, above-mentioned a kind of short-circuit protection device for switching device, wherein, the output of described data comparator has interrupting channel to be connected with interrupt system.
Further, above-mentioned a kind of short-circuit protection device for switching device, wherein, described signal sampling input module is an operation amplifier circuit.
Further, above-mentioned a kind of short-circuit protection device for switching device, wherein, described A/D data reducer is a DTU (Data Transfer unit).
Further, above-mentioned a kind of short-circuit protection device for switching device, wherein, described data comparator is a digital comparator.
Further, above-mentioned a kind of short-circuit protection device for switching device, wherein, described micro treatment module is to be provided with the data processing unit that carries A/D conversion and data comparator.
Again further; above-mentioned a kind of short-circuit protection device for switching device; wherein, be connected with power transfer module on the described protective device body, the input of power transfer module connects the feeder ear of amplifying device, DTU (Data Transfer unit), comparison means and micro treatment module.
Adopt technical solutions of the utility model, the global design compactness, the signal transfer mode between each device is brief, and reliable in action is good and antijamming capability is strong, the reliability height.What is more important by cooperating of the hardware comparator in the A/D modular converter and data processing unit, can accurately judge that the very first time is disposed to signal.Therefore; the occasions such as control system that can be widely used in automation centralized control system and Fieldbus Based distributed production line, for example electrical control and protection systems such as the illumination in the Motor Control in fields such as metallurgy, colliery, iron and steel, petrochemical industry, harbour, boats and ships, railway and protection system and the modern architecture, power source conversion, pump, blower fan, air-conditioning.The purpose of this utility model, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is the organigram of this short-circuit protection device for switching device.
The implication of each Reference numeral is as follows among the figure:
1 signal sampling input module, 2 release driver modules
3 interrupting channel 4A/D transducers
5A/D data reducer 6 digital comparators
7 data processing units, 8 power transfer module
9 protective device bodies, 10 micro treatment modules
Embodiment
A kind of short-circuit protection device for switching device as shown in Figure 1; comprise protective device body 9; be provided with signal sampling input module 1 in it, its special feature is: the output of signal sampling input module 1 is connected into the input of release driver module 2 by micro treatment module 10.
Specifically, described micro treatment module 10 comprises current signal amplifying device, DTU (Data Transfer unit), comparison means and microprocessor at least, the output of signal sampling input module 1 connects the input of current signal amplifying device, the output of current signal amplifying device is connected into the input of DTU (Data Transfer unit) and comparison means respectively, the output of DTU (Data Transfer unit) and comparison means all inserts the input of microprocessor, and the output of microprocessor connects the input of release driver module 2.
For the external short circuit detection module that is exempted from burden, realize self-powered simultaneously.After multiple comparison test, the utility model is connected with power transfer module 8 on protective device body 9, and the output of power transfer module 8 connects the feeder ear of signal sampling input module and microprocessor.
In conjunction with the utility model one preferred implementation,, be connected with interrupting channel 3 at the input of comparison means for the ease of troubleshooting.Further, it is comparatively suitable that the current signal amplifying device adopts A/D converter 4.Same, adopt A/D data reducer 5 as DTU (Data Transfer unit).
Simultaneously, digital comparator 6 is installed as a comparison, can be used for contrasting judgement positive half wave threshold values and negative half-wave threshold values well.Certainly in order to adapt to different job requirements, threshold values can carry out suitable setting.Perhaps, the equipment that directly adopts fixing decision threshold adapts to some common equipment as digital comparator 6.
And for speed up processing, microprocessor is to be provided with the data processing unit 7 that carries A/D conversion and hardware comparator module.
Be used for seeing in conjunction with actual making of the present utility model, signal sampling input module 1 current signal is amplified and the current potential lifting after directly send in the microprocessor module.Subsequently, the A/D converter data comparator 6 of microprocessor module carried out the comparison of signal before 5 arrangements of A/D data reducer draw the data that meet the data processing unit processing format.Specifically, when the current instantaneous value I 〉=short circuit threshold values of sampling, and when microprocessor was confirmed as short trouble but not disturbed, data processing unit 7 sent instruction and gives release driver module 2.
Immediately, release driver module 2 becomes level signal with the instruction transformation that data processing unit 7 sends, drive release by this level signal and drive power transfer module 8 work, it converts ac high voltage to DC low-voltage, is above-mentioned each module and device power supply.In this process, do not use the external short circuit detection module, can finish short trouble reliably, fast and detect response.
Again further, because the microprocessor in the microprocessor module is to be provided with the data processing unit 7 that carries A/D conversion and data comparator, it can carry out the comparison of signal and threshold values before data processing unit 7 obtains the A/D translation data.Therefore, can be in the very first time present case be belonged to fault and still disturb and correctly distinguish, send correct processing instruction and give release driver module 2.
By multiple comparison test, the judgement of data processing unit 7 can adopt software to carry out continuous several times, i.e. sampling more than at least twice relatively.Interrupt mode is comparatively reliable like this, does not influence the execution that short trouble is threaded off and protected.
By above-mentioned character express also in conjunction with the accompanying drawings as can be seen, behind employing the utility model, the global design compactness, the signal transfer mode between each device is brief, and reliable in action is good and antijamming capability is strong, the reliability height.What is more important by cooperating of digital comparator and data processing unit, can accurately judge that the very first time is disposed to signal.Therefore; the occasions such as control system that can be widely used in automation centralized control system and Fieldbus Based distributed production line, for example electrical control and protection systems such as the illumination in the Motor Control in fields such as metallurgy, colliery, iron and steel, petrochemical industry, harbour, boats and ships, railway and protection system and the modern architecture, power source conversion, pump, blower fan, air-conditioning.
Certainly, more than only be concrete exemplary applications of the present utility model, protection range of the present utility model is not constituted any limitation.In addition to the implementation, the utility model can also have other execution mode.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (7)
1. short-circuit protection device for switching device; comprise the protective device body; be provided with the signal sampling input module in it; it is characterized in that: the output of described signal sampling input module; be connected into the input of release driver module by micro treatment module; micro treatment module comprises the A/D modular converter at least; interrupt system and data processing unit; and the A/D modular converter is by A/D converter; the A/D data reducer; data comparator each has the interconnected composition of FPDP; the output of signal sampling input module connects the input of A/D converter by sampling channel; the output of A/D converter is connected into the input of A/D data reducer and data comparator respectively, and the output of A/D data reducer and interrupt system all inserts the input of data processing unit, and the output of data processing unit connects the input of release driver module.
2. a kind of short-circuit protection device for switching device according to claim 1 is characterized in that: the output of described data comparator has interrupting channel to be connected with interrupt system.
3. a kind of short-circuit protection device for switching device according to claim 1 is characterized in that: described signal sampling input module is an operation amplifier circuit.
4. a kind of short-circuit protection device for switching device according to claim 1 is characterized in that: described A/D data reducer is a DTU (Data Transfer unit).
5. a kind of short-circuit protection device for switching device according to claim 1 is characterized in that: described data comparator is a digital comparator.
6. a kind of short-circuit protection device for switching device according to claim 1 is characterized in that: described micro treatment module is to be provided with the data processing unit that carries A/D conversion and data comparator.
7. a kind of short-circuit protection device for switching device according to claim 1; it is characterized in that: be connected with power transfer module on the described protective device body, the input of power transfer module connects the feeder ear of amplifying device, DTU (Data Transfer unit), comparison means and micro treatment module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200460118U CN201726096U (en) | 2009-05-27 | 2009-05-27 | Short circuit protecting device of switching electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200460118U CN201726096U (en) | 2009-05-27 | 2009-05-27 | Short circuit protecting device of switching electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201726096U true CN201726096U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200460118U Expired - Lifetime CN201726096U (en) | 2009-05-27 | 2009-05-27 | Short circuit protecting device of switching electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201726096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902034B (en) * | 2009-05-25 | 2013-05-22 | 苏州万龙电气集团股份有限公司 | Short-circuit protection device for switching device |
-
2009
- 2009-05-27 CN CN2009200460118U patent/CN201726096U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101902034B (en) * | 2009-05-25 | 2013-05-22 | 苏州万龙电气集团股份有限公司 | Short-circuit protection device for switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Sheyang Weilong Electric Co., Ltd. Assignor: Suzhou Wanlong Electric Group Co., Ltd. Contract record no.: 2011320010039 Denomination of utility model: Short circuit protecting device of switching electrical equipment Granted publication date: 20110126 License type: Exclusive License Record date: 20110422 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |
|
| CX01 | Expiry of patent term |