CN104267297B - A kind of capacitor discharge speed test circuitry, test device and method of testing - Google Patents
A kind of capacitor discharge speed test circuitry, test device and method of testing Download PDFInfo
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- CN104267297B CN104267297B CN201410566943.0A CN201410566943A CN104267297B CN 104267297 B CN104267297 B CN 104267297B CN 201410566943 A CN201410566943 A CN 201410566943A CN 104267297 B CN104267297 B CN 104267297B
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- 239000003990 capacitor Substances 0.000 title claims abstract description 92
- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 238000010998 test method Methods 0.000 title abstract description 5
- 238000000034 method Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000007600 charging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Abstract
This application discloses a kind of capacitor discharge speed test circuitry, test device and method of testing, test circuit includes：The power circuit powered to capacitor, it is in parallel with the capacitor, divider to detect the condenser voltage, the capacitor is connected with the first common port of the divider with the first end of discharge switch, and the capacitor passes sequentially through current divider, additional resistance, discharge device with the second common port of the divider and is connected with the second end of the discharge switch.The test circuit that the application is provided, capacitor can be powered by power circuit, remaining DC voltage after analog capacitor separating brake, it is then turned off power circuit, close discharge switch, capacitor is discharged using accessory circuits and discharge device, and discharge voltage and discharge current are detected by divider and current divider, the purpose that the different discharge devices of detection influence on capacitor discharge speed is realized.
Description
Technical field
The application is related to capacitor detection technique field, more specifically to a kind of capacitor discharge velocity test electricity
Road, test device and method of testing.
Background technology
Shunt capacitor group is widely used in the reactive-load compensation of power network as capacitive element, to improve line voltage and work(
Rate factor, reduces the damage of circuit.
When switch cut-offs shunt capacitor group, due to the particularity of load, there is higher recovery voltage between contact.Open
Power-off stream blow-out after, the residual charge in capacitor bank can not discharge in a short time, supply voltage with it is residual in capacitor bank
Pressure is reverse, causes to bear higher restoring over-voltage for a long time between breaker fracture, once the insulation recovery of vacuum circuit breaker is strong
Degree can not bear to be added on restoring over-voltage thereon, easily occur arc reignition.
It is general that shunt capacitor is discharged from discharge device in order to solve the problem.But, prior art lacks
A kind of scheme for the influence to capacitor discharge speed of testing different discharge devices, it is impossible to determine whether discharge device meets to electricity
The requirement of the container residual voltage velocity of discharge.
The content of the invention
In view of this, this application provides a kind of capacitor discharge speed test circuitry, test device and method of testing, use
In providing a kind of capacitor discharge speed trial scheme, to verify different type discharge device to capacitor residue tension discharge speed
The influence of degree.
To achieve these goals, it is proposed that scheme it is as follows：
A kind of capacitor discharge speed test circuitry, including：
The power circuit powered to capacitor, the power circuit includes power switch；
It is in parallel with the capacitor, to detect the divider of the condenser voltage；
The capacitor is connected with the first common port of the divider with the first end of discharge switch, the capacitor with
Second common port of the divider passes sequentially through the second end of current divider, additional resistance, discharge device and the discharge switch
It is connected.
Preferably, when the power circuit includes adjustable transformer and the step-up transformer being attached thereto,
The test circuit also includes commutation diode, and the commutation diode is arranged on the pair of the step-up transformer
Side.
Preferably, the power circuit is Switching Power Supply or linear power supply.
Preferably, in addition to：
The voltage-regulator diode in parallel with the capacitor.
Preferably, in addition to：
It is connected on the thermistor of the step-up transformer secondary.
Preferably, the divider is divider.
Preferably, the current divider is direct current current divider.
Preferably, the additional resistance is slide rheostat.
A kind of capacitor discharge speed testing device, including capacitor discharge speed test circuitry described above, and
It is arranged on the housing outside the capacitor discharge speed test circuitry.
A kind of capacitor discharge testing method, applied in capacitor discharge speed test circuitry described above,
Method includes：
The capacitor is charged using the power circuit；
Judge whether the magnitude of voltage that divider is shown reaches preset value；
If so, then disconnecting the power circuit, and close the discharge switch；
The magnitude of voltage and current value exported using the divider and the current divider, determines capacitor discharge speed.
It can be seen from above-mentioned technical scheme that, the capacitor discharge speed test circuitry that the embodiment of the present application is provided, bag
Include：The power circuit powered to capacitor, divider to detect the condenser voltage, institute in parallel with the capacitor
State capacitor with the first common port of the divider with the first end of discharge switch to be connected, the capacitor and the divider
The second common port pass sequentially through current divider, additional resistance, discharge device and be connected with the second end of the discharge switch.The application
The test circuit of offer, can be powered by power circuit to capacitor, remaining direct current after analog capacitor separating brake
Pressure, is then turned off power circuit, closes discharge switch, capacitor is discharged using accessory circuits and discharge device, and leads to
Cross divider and current divider to detect discharge voltage and discharge current, realize the different discharge devices of detection to capacitor discharge speed
The purpose of influence.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of application, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of capacitor discharge speed test circuitry structural representation disclosed in the embodiment of the present application；
Fig. 2 is another capacitor discharge speed test circuitry structural representation disclosed in the embodiment of the present application；
Fig. 3 is a kind of capacitor discharge testing method flow chart disclosed in the embodiment of the present application；
Fig. 4 is another capacitor discharge speed test circuitry structural representation disclosed in the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of the application protection.
Referring to Fig. 1, Fig. 1 is a kind of capacitor discharge speed test circuitry structural representation disclosed in the embodiment of the present application.
As shown in figure 1, the circuit includes：
The power circuit VCC powered to capacitor C；
Wherein, power circuit VCC can be powered for capacitor C, with direct current remaining after analog capacitor separating brake
Pressure, power circuit VCC includes power switch (not marked in Fig. 1), can be with the switch of controlling power circuit by power switch.
It is in parallel with the capacitor C, to detect the divider U of the capacitor C voltage；
Wherein, divider U can be with the voltage of sensing capacitor.
The capacitor C is connected with the first common port of the divider U with discharge switch K2 first end, the electric capacity
The device C and divider U the second common port passes sequentially through current divider A, additional resistance R, discharge device W and the discharge switch
K2 the second end is connected.
Wherein, discharge device W is discharge device to be measured, and after discharge switch K2 is merged, discharge device W can be to electricity
Container C is discharged.Annex resistance R can simulate and adjust discharge loop resistance.
The capacitor discharge speed test circuitry that the embodiment of the present application is provided, including：The power circuit powered to capacitor,
It is in parallel with the capacitor, the divider to detect the condenser voltage, the capacitor and the first of the divider
Common port is connected with the first end of discharge switch, and the second common port of the capacitor and the divider passes sequentially through shunting
Device, additional resistance, discharge device are connected with the second end of the discharge switch.The test circuit that the application is provided, can pass through
Power circuit is powered to capacitor, and remaining DC voltage, is then turned off power circuit after analog capacitor separating brake, closes
Discharge switch, is discharged capacitor using accessory circuits and discharge device, and is put by divider and current divider to detect
Piezoelectric voltage and discharge current, realize the purpose that the different discharge devices of detection influence on capacitor discharge speed.
Referring to Fig. 2, Fig. 2 is another capacitor discharge speed test circuitry structural representation disclosed in the embodiment of the present application
Figure.
In Fig. 2, power circuit VCC is defined, it can include adjustable transformer T1 and step-up transformer T2,
On the basis of this, in addition it is also necessary in step-up transformer T2 secondary increase commutation diode D.
Wherein, adjustable transformer T1 includes power switch K1.
When being tested using the test circuit shown in Fig. 2, specific implementation process is：Whole process is divided into charging process
And discharge process.Charging process is：Power switch K1 is closed, point discharge switch K2 adjusts adjustable transformer T1, boosted transformer
T2 boosts, and by commutation diode D rectifications, gives capacitor C chargings, while monitoring whether DC voltage reaches pre- on capacitor C
If value, if do not arrived, continue to adjust adjustable transformer T1, until DC voltage reaches preset value on capacitor C.Discharge process
For：After DC voltage on capacitor C reaches preset value, independent power source switch K1 closes discharge switch K2, by discharge device W and
DC voltage on additional resistance R releasing capacitors C, at the same using divider U and current divider A monitor capacitor C DC voltages and
Discharge loop electric current, judges capacitor discharge speed.Specific workflow is as shown in Figure 3.Method shown in Fig. 3 includes：
Step S100, using the power circuit capacitor is charged；
Step S110, judge whether the magnitude of voltage that divider is shown reaches preset value；
If so, then performing step S120, disconnecting the power circuit, and close the discharge switch；
Step S130, the magnitude of voltage and current value exported using the divider and the current divider, determine that capacitor is put
Electric speed.
It should be noted that power circuit can also be Switching Power Supply or linear electricity except realizing in the manner shown in figure 2
Source, can direct output of DC current stream be capacitor charged.
Further, referring to Fig. 4, Fig. 4 is another capacitor discharge speed test circuitry knot disclosed in the embodiment of the present application
Structure schematic diagram.
Compared to Fig. 2, the voltage-regulator diode DZ in parallel with capacitor C is further increased in Fig. 4.Voltage-regulator diode can
Prevent from puncturing capacitor due to overtension.
Further, can also the step-up transformer T2 secondary series thermal-sensitive resistance, to prevent surge impact.
It is to be understood that above-mentioned divider can be divider, current divider is direct current current divider.Annex resistance can
With slide rheostat, easily to carry out resistance adjustment.
On the basis of the above, the embodiment of the present application additionally provides a kind of capacitor discharge speed testing device, test dress
Put including housing and the test circuit being arranged in housing, test circuit is the capacitor discharge velocity test electricity of above-mentioned introduction
Road.
Finally, in addition it is also necessary to explanation, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include that
A little key elements, but also other key elements including being not expressly set out, or also include be this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except also there is other identical element in the process including the key element, method, article or equipment.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the application.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or scope.Therefore, the application
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
1. a kind of capacitor discharge speed test circuitry, it is characterised in that including：
The power circuit powered to capacitor, the power circuit includes power switch；
It is in parallel with the capacitor, to detect the divider of the condenser voltage；
The capacitor is connected with the first common port of the divider with the first end of discharge switch, the capacitor with it is described
Second common port of divider passes sequentially through current divider, additional resistance, discharge device and is connected with the second end of the discharge switch；
The power circuit is Switching Power Supply or linear power supply.
2. test circuit according to claim 1, it is characterised in that the power circuit include adjustable transformer and with
Connected step-up transformer when,
The test circuit also includes commutation diode, and the commutation diode is arranged on the secondary of the step-up transformer.
3. test circuit according to claim 2, it is characterised in that also include：
The voltage-regulator diode in parallel with the capacitor.
4. test circuit according to claim 2, it is characterised in that also include：
It is connected on the thermistor of the step-up transformer secondary.
5. test circuit according to claim 2, it is characterised in that the divider is divider.
6. the test circuit according to right requires 2, it is characterised in that the current divider is direct current current divider.
7. test circuit according to claim 2, it is characterised in that the additional resistance is slide rheostat.
8. a kind of capacitor discharge speed testing device, it is characterised in that including the electric capacity described in claim 1-7 any one
Device velocity of discharge test circuit, and it is arranged on the housing outside the capacitor discharge speed test circuitry.
9. a kind of capacitor discharge testing method, it is characterised in that applied to the electricity described in claim 1-7 any one
In condenser discharge speed test circuitry, method includes：
The capacitor is charged using the power circuit；
Judge whether the magnitude of voltage that divider is shown reaches preset value；
If so, then disconnecting the power circuit, and close the discharge switch；
The magnitude of voltage and current value exported using the divider and the current divider, determines capacitor discharge speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410566943.0A CN104267297B (en) | 2014-10-22 | 2014-10-22 | A kind of capacitor discharge speed test circuitry, test device and method of testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410566943.0A CN104267297B (en) | 2014-10-22 | 2014-10-22 | A kind of capacitor discharge speed test circuitry, test device and method of testing |
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| CN104267297A CN104267297A (en) | 2015-01-07 |
| CN104267297B true CN104267297B (en) | 2017-09-22 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110108956A (en) * | 2019-04-26 | 2019-08-09 | 华夏天信智能物联股份有限公司 | A kind of dedicated high frequency electric source of the capacitor testing of wide frequency ranges and its test method |
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