CN103985617A - Intelligent fuse - Google Patents
Intelligent fuse Download PDFInfo
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- CN103985617A CN103985617A CN201410243362.3A CN201410243362A CN103985617A CN 103985617 A CN103985617 A CN 103985617A CN 201410243362 A CN201410243362 A CN 201410243362A CN 103985617 A CN103985617 A CN 103985617A
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Abstract
The invention discloses an intelligent fuse. A lower end three-phase line of the fuse is connected in, an intelligent control unit is arranged in the intelligent fuse, the lower end three-phase line of the fuse is connected in the intelligent control unit, the intelligent control unit comprises a fuse state detection unit, a fuse current detection unit used for detecting current in the fuse, and a central control unit, the detection result of the fuse state detection unit and the detection result of the fuse current detection unit are both sent to the central control unit connected with the fuse state detection unit and the fuse current detection unit, and the central control unit gives out an indication instruction according to the detection results. According to the intelligent fuse, the state of a fuse wire of a fuse body in the intelligent fuse can be monitored, an alarm is given when a state fault occurs, meanwhile, whether the actual fusing time of the fuse wire is judged according to current flowing in the fuse wire, and therefore an alarm is given in advance under the condition that the fuse wire may fuse, the intelligence of the fuse is improved, and the intelligent fuse can have higher using performance.
Description
Technical field
The present invention relates to a kind of fuse, be specifically related to a kind of Intelligent fuse that sends status fault alarm and pre-alarm.
Background technology
A kind of simple and effective protective device of fuse.In circuit, mainly play short-circuit protection effect.Fuse is mainly made up of the insulated tube (insulating base) of melt and installation melt.When use, the principle of fuse is to utilize the electric current conductor of flowing through can make conductor temp .-elevating, so reach after the fusing point of conductor, conductor melts open circuit protection electrical appliance and circuit is not burned.It is an accumulation of heat, so also can realize overload protection.Once burning, melt will change melt.But in current fuse, do not occur the outside of fuse fuse failure situation show and report to the police temporarily.
Summary of the invention
The object of the invention is to provide a kind of Intelligent fuse, and Real-Time Monitoring and state alarm that it has been realized fuse state in fuse have realized the Fault pre-warning based on current detecting simultaneously, have improved the serviceability of fuse.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
A kind of Intelligent fuse, the lower end triple line access of fuse, in described Intelligent fuse, be provided with intelligent control unit, the lower end triple line access intelligent control unit of fuse, described intelligent control unit comprises fuse state detecting unit, fuse current detecting unit and central control unit for detection of electric current in fuse, the testing result of fuse state detecting unit, fuse current detecting unit is all sent to this two central control units that unit is connected, and central control unit sends indicator according to testing result.
For technique scheme, inventor also has further optimization embodiment.
As optimization, the lower end triple line of fuse is by light-coupled isolation unit access intelligent control unit, the lower terminal voltage of the fuse state detecting unit cycle detection fuse in intelligent control unit, when fuse phase fuse failure, the corresponding lower terminal voltage of this phase fuse changes, and the change in voltage result that central control unit obtains according to detection is sent the status fault alarm of corresponding phase fuse failure.
Further, the status fault alarm that central control unit sends comprises light warning output, alarm relay output.
As optimization, fuse current detecting unit detects the actual current I that detects fuse in overcurrent fuse by current transformer, central control unit carries out testing result to compare with the load current value of fuse after AD converting digital again, when in detection obtains fuse, real time execution electric current I is higher than the rated current Is of fuse, central control unit carries out over-load inverse time-lag calculating and calculates thermal capacity value and compare with the thermal capacity value of setting, as the thermal capacity value I drawing
2t higher than equal set thermal capacity value time send pre-alarm, wherein t is actual fusing time.
Further, what described central control unit carried out comprises that for calculating the over-load inverse time-lag calculating of actual fusing time t strong inverse time lag calculating was calculated with the extra-heavy inverse time lag, normally inverse time lag calculating and the calculating of superpower inverse time lag etc., wherein:
1) strong inverse time lag computing formula is
t?=?Ts?*?9/【(I/Is)-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse;
2) computing formula is the extra-heavy inverse time lag
t?=?Ts?*?99/【(I/Is)
2-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse;
3) normal inverse time lag computing formula is
t?=?Ts?*?0.14/【(I/Is)
0.02-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse.
4) superpower inverse time lag computing formula is
t?=?Ts?*?315.23/【(I/Is)
2.5-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse.
With respect to scheme of the prior art, advantage of the present invention is:
The invention describes a kind of Intelligent fuse, it has realized the status monitoring to the melt fuse in Intelligent fuse, and in the time there is status fault, give alarm, judge the actual fusing time of fuse according to the electric current of flowing through in fuse simultaneously, thereby realize the situation that may fuse to fuse and carried out pre-alarm, improve the intelligent of fuse, made it have higher serviceability.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the control principle block diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for the present invention is described.The implementation condition adopting in embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
Embodiment:
The invention describes a kind of Intelligent fuse, its control principle block diagram as shown in Figure 1, the lower end triple line access of fuse, in described Intelligent fuse, be provided with intelligent control unit, (working power of intelligent control unit is provided by internal auxiliary power supply), the lower end triple line access intelligent control unit of fuse, described intelligent control unit comprises fuse state detecting unit, for detection of fuse current detecting unit and the central control unit of electric current in fuse, fuse state detecting unit, the testing result of fuse current detecting unit is all sent to this two central control units that unit is connected, central control unit sends indicator according to testing result.
The lower end triple line of fuse is by light-coupled isolation unit access intelligent control unit, the lower terminal voltage of the fuse state detecting unit cycle detection fuse in intelligent control unit, when fuse phase fuse failure, the corresponding lower terminal voltage of this phase fuse changes, and the change in voltage result that central control unit obtains according to detection is sent the status fault alarm of corresponding phase fuse failure.
The status fault alarm that central control unit sends comprises light warning output, alarm relay output.
Fuse current detecting unit detects the actual current I that detects fuse in overcurrent fuse by current transformer, central control unit carries out testing result to compare with the load current value of fuse after AD converting digital again, when in detection obtains fuse, real time execution electric current I is higher than the rated current Is of fuse, central control unit carries out over-load inverse time-lag calculating and calculates thermal capacity value and compare with the thermal capacity value of setting, as the thermal capacity value I drawing
2t higher than equal set thermal capacity value time send pre-alarm, wherein t is actual fusing time.
Further, what described central control unit carried out comprises that for calculating the over-load inverse time-lag calculating of actual fusing time t strong inverse time lag calculating was calculated with the extra-heavy inverse time lag, normally inverse time lag calculating and the calculating of superpower inverse time lag etc., wherein:
1) strong inverse time lag computing formula is
t?=?Ts?*?9/【(I/Is)-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse;
2) computing formula is the extra-heavy inverse time lag
t?=?Ts?*?99/【(I/Is)
2-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse;
3) normal inverse time lag computing formula is
t?=?Ts?*?0.14/【(I/Is)
0.02-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse.
4) superpower inverse time lag computing formula is
t?=?Ts?*?315.23/【(I/Is)
2.5-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse.
In the fuse course of work, Monitoring Data is all presented on the display unit of peripheral hardware by central control unit, be convenient to field personnel's real time inspection, Monitoring Data is sent to far-end by communication unit simultaneously, is convenient to the real-time remote monitoring of remote worker to on-the-spot volume fuse.
Above-mentioned example is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations that Spirit Essence does according to the present invention or modification, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. an Intelligent fuse, the lower end triple line access of fuse, it is characterized in that, in described Intelligent fuse, be provided with intelligent control unit, the lower end triple line access intelligent control unit of fuse, described intelligent control unit comprises fuse state detecting unit, fuse current detecting unit and central control unit for detection of electric current in fuse, the testing result of fuse state detecting unit, fuse current detecting unit is all sent to this two central control units that unit is connected, and central control unit sends indicator according to testing result.
2. a kind of Intelligent fuse according to claim 1, it is characterized in that, the lower end triple line of fuse is by light-coupled isolation unit access intelligent control unit, the lower terminal voltage of the fuse state detecting unit cycle detection fuse in intelligent control unit, when fuse phase fuse failure, the corresponding lower terminal voltage of this phase fuse changes, and the change in voltage result that central control unit obtains according to detection is sent the status fault alarm of corresponding phase fuse failure.
3. a kind of Intelligent fuse according to claim 2, is characterized in that, the status fault alarm that central control unit sends comprises light warning output, alarm relay output.
4. a kind of Intelligent fuse according to claim 1, it is characterized in that, fuse current detecting unit detects the actual current I that detects fuse in overcurrent fuse by current transformer, central control unit carries out testing result to compare with the load current value of fuse after AD converting digital again, when in detection obtains fuse, real time execution electric current I is higher than the rated current Is of fuse, central control unit carries out over-load inverse time-lag calculating and calculates thermal capacity value and compare with the thermal capacity value of setting, as the thermal capacity value I drawing
2t higher than equal set thermal capacity value time send pre-alarm, wherein t is actual fusing time.
5. a kind of Intelligent fuse according to claim 4, it is characterized in that, what described central control unit carried out comprises that for calculating the over-load inverse time-lag calculating of actual fusing time t strong inverse time lag calculating was calculated with the extra-heavy inverse time lag, normally inverse time lag calculating and the calculating of superpower inverse time lag etc., wherein:
Strong inverse time lag computing formula is
t?=?Ts?*?9/【(I/Is)-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse;
Extra-heavy inverse time lag computing formula is
t?=?Ts?*?99/【(I/Is)
2-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse;
Normal inverse time lag computing formula is
t?=?Ts?*?0.14/【(I/Is)
0.02-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse;
Superpower inverse time lag computing formula is
t?=?Ts?*?315.23/【(I/Is)
2.5-1】
T is actual fusing time, and Ts is time constant, and I is the actual current in fuse, the rated current that Is is fuse.
6. a kind of Intelligent fuse according to claim 1, is characterized in that, the parameter such as the state of fuse and the electric current by fuse can be transferred to remote computer by fieldbus, can realize telecommunication.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243362.3A CN103985617B (en) | 2014-06-04 | 2014-06-04 | A kind of Intelligent fuse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410243362.3A CN103985617B (en) | 2014-06-04 | 2014-06-04 | A kind of Intelligent fuse |
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| CN103985617A true CN103985617A (en) | 2014-08-13 |
| CN103985617B CN103985617B (en) | 2016-02-17 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183439A (en) * | 2014-08-14 | 2014-12-03 | 苏州市南光电器有限公司 | Intelligent fuse protector |
| CN105977114A (en) * | 2016-06-30 | 2016-09-28 | 上海诚意电气有限公司 | Fuse and fusing detection device |
| CN106019075A (en) * | 2016-07-01 | 2016-10-12 | 山东百川电气科技有限公司 | Intelligent fuse test system |
| CN108508321A (en) * | 2018-04-02 | 2018-09-07 | 东莞理工学院 | A kind of intelligent early-warning fuse and the method for preparing early warning fuse burned-out core |
| CN110426591A (en) * | 2019-07-24 | 2019-11-08 | 王炎 | A kind of high-tension fuse switching detection device |
| CN111383869A (en) * | 2018-12-29 | 2020-07-07 | 安波福电子(苏州)有限公司 | Novel fuse box with large current and fuse fusing early warning function |
| CN111508798A (en) * | 2020-04-23 | 2020-08-07 | 南京萨特科技发展有限公司 | Automatic replacement fuse, fuse assembly and control method |
| CN112735927A (en) * | 2020-12-17 | 2021-04-30 | 海南电网有限责任公司海南输变电检修分公司 | Self-checking device for self-recovery fuse |
| CN113643946A (en) * | 2021-06-23 | 2021-11-12 | 温州有达电气有限公司 | Intelligent household switch with adjustable current limit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402857A (en) * | 2017-07-31 | 2017-11-28 | 郑州云海信息技术有限公司 | A kind of method of raid card termination of insurance status analysis |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183439A (en) * | 2014-08-14 | 2014-12-03 | 苏州市南光电器有限公司 | Intelligent fuse protector |
| CN105977114A (en) * | 2016-06-30 | 2016-09-28 | 上海诚意电气有限公司 | Fuse and fusing detection device |
| CN106019075A (en) * | 2016-07-01 | 2016-10-12 | 山东百川电气科技有限公司 | Intelligent fuse test system |
| CN108508321A (en) * | 2018-04-02 | 2018-09-07 | 东莞理工学院 | A kind of intelligent early-warning fuse and the method for preparing early warning fuse burned-out core |
| CN111383869A (en) * | 2018-12-29 | 2020-07-07 | 安波福电子(苏州)有限公司 | Novel fuse box with large current and fuse fusing early warning function |
| CN110426591A (en) * | 2019-07-24 | 2019-11-08 | 王炎 | A kind of high-tension fuse switching detection device |
| CN111508798A (en) * | 2020-04-23 | 2020-08-07 | 南京萨特科技发展有限公司 | Automatic replacement fuse, fuse assembly and control method |
| CN111508798B (en) * | 2020-04-23 | 2022-07-22 | 南京萨特科技发展有限公司 | Automatic replacement fuse, fuse assembly and control method |
| CN112735927A (en) * | 2020-12-17 | 2021-04-30 | 海南电网有限责任公司海南输变电检修分公司 | Self-checking device for self-recovery fuse |
| CN113643946A (en) * | 2021-06-23 | 2021-11-12 | 温州有达电气有限公司 | Intelligent household switch with adjustable current limit |
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| CN103985617B (en) | 2016-02-17 |
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