CN103424590A - Voltage sampling circuit for automatic reclosing lock - Google Patents
Voltage sampling circuit for automatic reclosing lock Download PDFInfo
- Publication number
- CN103424590A CN103424590A CN2012101497385A CN201210149738A CN103424590A CN 103424590 A CN103424590 A CN 103424590A CN 2012101497385 A CN2012101497385 A CN 2012101497385A CN 201210149738 A CN201210149738 A CN 201210149738A CN 103424590 A CN103424590 A CN 103424590A
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- China
- Prior art keywords
- voltage
- sampling circuit
- divider resistance
- automatic reclosing
- voltage sampling
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- 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.)
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Abstract
The invention discloses a voltage sampling circuit for an automatic reclosing lock. The voltage sampling circuit comprises a first voltage-dividing resistor, a second voltage-dividing resistor connected with the first voltage-dividing resistor and a signal processor for detecting voltage signals of the second voltage-dividing resistor. The first voltage-dividing resistor and the second voltage-dividing resistor are connected between a phase line and a zero line of a detected circuit through wires, and the second voltage-dividing resistor is a pure resistive part. Compared with the prior art, due to the fact that the second voltage-dividing resistor is a pure resistive device and is high in linearity and wide in linear range and not subjected to influence of a capacitive load or an inductive load, the voltage sampling circuit for the automatic reclosing lock has the advantages of being high in linearity and wide in linear range and not subjected to influence of the capacitive load or the inductive load and the like. In addition, the voltage sampling circuit for the automatic reclosing lock is simple in structure and low in fabricating cost.
Description
Technical field
The present invention relates to a kind of voltage sampling circuit, relate in particular to a kind of voltage sampling circuit for automatic reclosing.
Background technology
Existing automatic reclosing circuit all adopts voltage transformer (VT) to voltage sample, although the voltage transformer (VT) sample mode can play the high-low pressure buffer action, still has many drawbacks, and for example: the voltage transformer (VT) range of linearity is limited, and the linearity is not high; Voltage transformer error is larger, and degree of accuracy is lower; There is saturated problem in voltage transformer (VT); The voltage transformer (VT) cost is higher.
In view of the above problems, be necessary to provide a kind of voltage sampling circuit for automatic reclosing, should be high for the voltage sampling circuit linearity of automatic reclosing, the range of linearity is wide, and cost is lower, thereby addresses the above problem.
Summary of the invention
For the deficiencies in the prior art, the technical matters that the present invention solves is to provide a kind of voltage sampling circuit for automatic reclosing, should be high for the voltage sampling circuit linearity of automatic reclosing, and the range of linearity is wide, and cost is lower.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A kind of voltage sampling circuit for automatic reclosing, comprise the first divider resistance, the second divider resistance be connected with described the first divider resistance and for detection of the signal processor of described the second divider resistance voltage signal, described the first divider resistance, described the second divider resistance are connected to by electric wire between the phase line and zero line of detected circuit, and described the second divider resistance is pure resistive part.
Further, the resistance of described the first divider resistance of the resistance value ratio of described the second divider resistance is little.
The invention has the beneficial effects as follows: compared to prior art, because described the second divider resistance is pure resistive electron device, its linearity is high, the range of linearity extensively and not is subject to the impact of capacitive load or inductive load, thereby makes the voltage sampling circuit for automatic reclosing of the present invention have the advantages such as impact that the linearity is high, the range of linearity extensively, is not subject to capacitive load or inductive load.In addition, the voltage sampling circuit for automatic reclosing of the present invention is simple in structure, and cost is lower.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention for the voltage sampling circuit of automatic reclosing.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with the drawings and specific embodiments, describe the present invention.
Shown in please refer to the drawing 1, the present invention for the voltage sampling circuit 100 of automatic reclosing comprise the first divider resistance 10, the second divider resistance 20 be connected with described the first divider resistance 10, in order to signal processor 30 and the detected circuit 40 of detectable voltage signals, described detected circuit 40 comprises phase line 41 and zero line 42, and described the second divider resistance 20 is pure resistive electron device.
Shown in please refer to the drawing 1, described the first divider resistance 10 is connected with phase line 41, the zero line 42 of described detected circuit 40 respectively by electric wire 50 with described the second divider resistance 20.The resistance of described the second divider resistance 20 is less than the resistance of described the first divider resistance 10.Described signal processor 30 is between described the first divider resistance 10 and described the second divider resistance 20, it is used for detecting the voltage signal of described the second divider resistance 20, and export the output signal proportional with the voltage of detected circuit 40 from output terminal 31 after the signal detected is processed, for automatic reclosing, use.
Because described the second divider resistance 20 is pure resistive electron device, its linearity is high, the range of linearity extensively and not is subject to the impact of capacitive load or inductive load, thereby makes the voltage sampling circuit for automatic reclosing 100 of the present invention have the advantages such as impact that the linearity is high, the range of linearity extensively, is not subject to capacitive load or inductive load.In addition, the voltage sampling circuit for automatic reclosing 100 of the present invention is simple in structure, and cost is lower.
Of particular note, for the common skill personnel of this area, that under instruction of the present invention, does changes for equivalence of the present invention, must be included in the scope that the present patent application the scope of the claims advocates.
Claims (2)
1. the voltage sampling circuit for automatic reclosing, it is characterized in that: the described voltage sampling circuit for automatic reclosing comprises the first divider resistance, the second divider resistance be connected with described the first divider resistance and for detection of the signal processor of described the second divider resistance voltage signal, described the first divider resistance, described the second divider resistance are connected to by electric wire between the phase line and zero line of detected circuit, and described the second divider resistance is pure resistive part.
2. want the 1 described voltage sampling circuit for automatic reclosing as right, it is characterized in that: the resistance of described the first divider resistance of the resistance value ratio of described the second divider resistance is little.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101497385A CN103424590A (en) | 2012-05-15 | 2012-05-15 | Voltage sampling circuit for automatic reclosing lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101497385A CN103424590A (en) | 2012-05-15 | 2012-05-15 | Voltage sampling circuit for automatic reclosing lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103424590A true CN103424590A (en) | 2013-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101497385A Pending CN103424590A (en) | 2012-05-15 | 2012-05-15 | Voltage sampling circuit for automatic reclosing lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103424590A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3886448A (en) * | 1973-11-05 | 1975-05-27 | Ivan Fedorovich Drabenko | Method and apparatus for testing high-voltage dividers |
| US5256979A (en) * | 1992-02-21 | 1993-10-26 | Abb Power T&D Company Inc. | Method and apparatus for measuring an unknown voltage, and power meter employing the same |
| CN201166685Y (en) * | 2008-02-15 | 2008-12-17 | 徐伟专 | Wide band high voltage intelligent resistance voltage division type voltage sensor |
| CN201331553Y (en) * | 2008-12-22 | 2009-10-21 | 义乌市华晨机电有限公司 | DC (direct current) voltage measuring circuit with isolation |
| CN202133717U (en) * | 2011-07-06 | 2012-02-01 | 深圳威胜科技有限公司 | Metering sampling circuit based on manganese-copper diverter |
| CN102445583A (en) * | 2010-10-13 | 2012-05-09 | 深圳市领步科技有限公司 | Detection method for voltage signals of power energy quality monitoring device and circuit as well as application thereof |
-
2012
- 2012-05-15 CN CN2012101497385A patent/CN103424590A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3886448A (en) * | 1973-11-05 | 1975-05-27 | Ivan Fedorovich Drabenko | Method and apparatus for testing high-voltage dividers |
| US5256979A (en) * | 1992-02-21 | 1993-10-26 | Abb Power T&D Company Inc. | Method and apparatus for measuring an unknown voltage, and power meter employing the same |
| CN201166685Y (en) * | 2008-02-15 | 2008-12-17 | 徐伟专 | Wide band high voltage intelligent resistance voltage division type voltage sensor |
| CN201331553Y (en) * | 2008-12-22 | 2009-10-21 | 义乌市华晨机电有限公司 | DC (direct current) voltage measuring circuit with isolation |
| CN102445583A (en) * | 2010-10-13 | 2012-05-09 | 深圳市领步科技有限公司 | Detection method for voltage signals of power energy quality monitoring device and circuit as well as application thereof |
| CN202133717U (en) * | 2011-07-06 | 2012-02-01 | 深圳威胜科技有限公司 | Metering sampling circuit based on manganese-copper diverter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131204 |