CN103048513A - Self-insurance wide-frequency voltage signal collecting device - Google Patents
Self-insurance wide-frequency voltage signal collecting device Download PDFInfo
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- CN103048513A CN103048513A CN201110312903XA CN201110312903A CN103048513A CN 103048513 A CN103048513 A CN 103048513A CN 201110312903X A CN201110312903X A CN 201110312903XA CN 201110312903 A CN201110312903 A CN 201110312903A CN 103048513 A CN103048513 A CN 103048513A
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Abstract
The invention discloses a self-insurance wide-frequency voltage signal collecting device, comprising a fuse connected with a resistance divider in series. Particularly, the fuse is a non-inductive fuse wire (2). The resistance divider is formed by connecting a first non-inductive resistor (3) and a second non-inductive resistor (6) in series; the both ends of the second non-inductive resistor (6) are connected with a voltage limiter (5) and an output terminal (4) in parallel; the voltage limiter (5) is a voltage stabilization discharge pipe or a gas discharge pipe; and the output terminal (4) is electrically connected with an input end of an industrial control machine, or a primary side of an electronic voltage transformer. With the adoption of the self-insurance wide-frequency voltage signal collecting device provided by the invention, not only can collected voltage waveform be closer to a really generated waveform, so that the accuracy of voltage collecting signals can be greatly improved; but also the defect that the voltage amplitude of the collected signals cannot be controlled, caused by various over-voltages in the system, can be overcome, so that the security of the follow-up electronic equipment can be ensured. The self-insurance wide-frequency voltage signal collecting device can be widely used for deformation-free collection of the high-frequency voltage waveform in an electric power system.
Description
Technical field
The present invention relates to a kind of voltage signal acquisition device, especially a kind of Self-security broadband voltage signal acquisition device.
Background technology
In electric system, the probability that HF voltage produces is very high, and its infringement to equipment is also very large.People are in order to carry out Real-Time Monitoring to it, and many being connected in series by fuse and resitstance voltage divider of signal picker commonly used forms, as using in the present system.But, the sort signal collector exists weak point, at first, the resistor of fuse and formation resitstance voltage divider is fuse and the resistor with inductance, it can exert an influence to the high-frequency voltage signal that collects in the gatherer process of high-frequency voltage signal, causes the change of measuring error large, particularly some are changed express voltage waveform, as the superpotential waveform that is struck by lightning is difficult to then collect; Secondly, along with the application of various electronics collecting devices, and the abominable superpotential environment of collection site, resitstance voltage divider changes excessive output and has been not suitable for the electronics collecting device to the requirement of collection signal voltage amplitude.
Summary of the invention
The technical problem to be solved in the present invention provides Self-security broadband voltage signal acquisition device a kind of rational in infrastructure, easy to use for overcoming weak point of the prior art.
For solving technical matters of the present invention, the technical scheme that adopts is: Self-security broadband voltage signal acquisition device comprises the fuse that is connected in series with resitstance voltage divider, particularly,
Described fuse is non-inductive fuse;
Described resitstance voltage divider is connected in series by the first noninductive resistor and the second noninductive resistor and forms;
The two ends of described the second noninductive resistor are connected in parallel to voltage limiter and lead-out terminal.
As the further improvement of Self-security broadband voltage signal acquisition device, described voltage limiter is the voltage stabilizing discharge tube, or the bubble-discharge pipe; Described lead-out terminal is electrically connected the input end of industrial computer, or the primary side of electronic type voltage transformer.
Beneficial effect with respect to prior art is, employing is on the basis of the fuse that is connected in series with resitstance voltage divider, fuse is set as non-inductive fuse, resitstance voltage divider is connected in series by the first noninductive resistor and the second noninductive resistor and forms, the two ends of the second noninductive resistor are connected in parallel to the technical scheme of voltage limiter and lead-out terminal, both stopped the impact of inductance on the HF voltage waveform of plan collection, make the voltage waveform that collects closer to the waveform of true generation, particularly can not leak and adopt the Lightning Over-voltage waveform, improved widely the accuracy of voltage acquisition signal, for further the prevention and governing system in HF voltage lay a good foundation, prevent again the uncontrollable defective of the amplitude that makes the signal voltage that collects that various superpotential cause in the system, guaranteed the safety of follow-up electronic equipment.
As the further embodiment of beneficial effect, the one, voltage limiter is preferably the voltage stabilizing discharge tube, or the bubble-discharge pipe, and not only safety, reliable is gone back because there being larger choice to be beneficial to enforcement; The 2nd, lead-out terminal preferably is electrically connected the input end of industrial computer, or the primary side of electronic type voltage transformer, except being easy to improve the precision of collection, also being beneficial to and reducing volume.
Description of drawings
Below in conjunction with accompanying drawing optimal way of the present invention is described in further detail.
Fig. 1 is a kind of basic structure schematic diagram of the present invention.
Embodiment
Referring to Fig. 1, being constructed as follows of Self-security broadband voltage signal acquisition device: an end that is connected in series the resitstance voltage divider that forms by the first noninductive resistor 3 and the second noninductive resistor 6 is connected in series with non-inductive fuse 2, and the two ends of the second noninductive resistor 6 are connected in parallel to voltage limiter 5 and lead-out terminal 4; Wherein, voltage limiter 5 is the voltage stabilizing discharge tube, and lead-out terminal 4 is electrically connected the input end of industrial computer.
During use, only need two ends with this device be connected across between the bus 1 of three-phase power grid and the ground and get final product.Normal or when any variation occurs when the voltage on the bus 1; synchronously reflect voltage signal by being connected in series the resitstance voltage divider that forms by the first noninductive resistor 3 and the second noninductive resistor 6 in the capital in lead-out terminal 4 places, and be sent to industrial computer and process accordingly.
Obviously, those skilled in the art can carry out various changes and modification to Self-security broadband voltage signal acquisition device of the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (3)
1. a Self-security broadband voltage signal acquisition device comprises the fuse that is connected in series with resitstance voltage divider, it is characterized in that:
Described fuse is non-inductive fuse (2);
Described resitstance voltage divider is connected in series by the first noninductive resistor (3) and the second noninductive resistor (6) and forms;
The two ends of described the second noninductive resistor (6) are connected in parallel to voltage limiter (5) and lead-out terminal (4).
2. Self-security broadband voltage signal acquisition device according to claim 1 is characterized in that voltage limiter (5) is the voltage stabilizing discharge tube, or the bubble-discharge pipe.
3. Self-security broadband voltage signal acquisition device according to claim 1 is characterized in that lead-out terminal (4) is electrically connected the input end of industrial computer, or the primary side of electronic type voltage transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110312903XA CN103048513A (en) | 2011-10-14 | 2011-10-14 | Self-insurance wide-frequency voltage signal collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110312903XA CN103048513A (en) | 2011-10-14 | 2011-10-14 | Self-insurance wide-frequency voltage signal collecting device |
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| CN103048513A true CN103048513A (en) | 2013-04-17 |
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| CN201110312903XA Pending CN103048513A (en) | 2011-10-14 | 2011-10-14 | Self-insurance wide-frequency voltage signal collecting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810817A (en) * | 2015-04-16 | 2015-07-29 | 安徽一天电气技术有限公司 | Low residual voltage zinc oxide arrester |
| CN106249018A (en) * | 2016-08-23 | 2016-12-21 | 中国电力科学研究院 | A kind of and electronic transducer calibration instrument works in coordination with the high-precision voltage divider of use and the method for designing of potentiometer |
| CN107831356A (en) * | 2017-12-07 | 2018-03-23 | 广东电网有限责任公司电力科学研究院 | A kind of transformer transient overvoltage and sleeve pipe dielectric loss signal synchronous collection device |
| CN108710015A (en) * | 2018-07-27 | 2018-10-26 | 北京明源科技发展有限公司 | The overhead line voltage mutual inductor of collection voltages signal |
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| DE102006044008A1 (en) * | 2006-09-19 | 2008-03-27 | Conti Temic Microelectronic Gmbh | Voltage testing arrangement, has resistors together forming voltage divider for measuring input of microcontroller, and NPN transistor with base connected with output through divider, where control output of microcontroller is switched off |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810817A (en) * | 2015-04-16 | 2015-07-29 | 安徽一天电气技术有限公司 | Low residual voltage zinc oxide arrester |
| CN106249018A (en) * | 2016-08-23 | 2016-12-21 | 中国电力科学研究院 | A kind of and electronic transducer calibration instrument works in coordination with the high-precision voltage divider of use and the method for designing of potentiometer |
| CN106249018B (en) * | 2016-08-23 | 2020-10-20 | 中国电力科学研究院 | High-precision voltage divider used in cooperation with electronic transformer calibrator and design method of voltage divider |
| CN107831356A (en) * | 2017-12-07 | 2018-03-23 | 广东电网有限责任公司电力科学研究院 | A kind of transformer transient overvoltage and sleeve pipe dielectric loss signal synchronous collection device |
| CN107831356B (en) * | 2017-12-07 | 2023-05-23 | 广东电网有限责任公司电力科学研究院 | Transformer transient overvoltage and sleeve dielectric loss signal synchronous acquisition device |
| CN108710015A (en) * | 2018-07-27 | 2018-10-26 | 北京明源科技发展有限公司 | The overhead line voltage mutual inductor of collection voltages signal |
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Application publication date: 20130417 |