CN204086434U - A kind of capacitor discharge speed test circuitry and proving installation - Google Patents
A kind of capacitor discharge speed test circuitry and proving installation Download PDFInfo
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- CN204086434U CN204086434U CN201420615775.5U CN201420615775U CN204086434U CN 204086434 U CN204086434 U CN 204086434U CN 201420615775 U CN201420615775 U CN 201420615775U CN 204086434 U CN204086434 U CN 204086434U
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- capacitor
- discharge
- voltage
- voltage divider
- test circuit
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- 239000003990 capacitor Substances 0.000 title claims abstract description 88
- 238000012360 testing method Methods 0.000 title claims abstract description 43
- 238000009434 installation Methods 0.000 title abstract description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 15
- 238000011084 recovery Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Abstract
This application discloses a kind of capacitor discharge speed test circuitry and proving installation, test circuit comprises: the power circuit of powering to capacitor, in parallel with described capacitor, in order to detect the voltage divider of described condenser voltage, described capacitor is connected with the first end of discharge switch with the first common port of described voltage divider, and described capacitor is connected with the second end of described discharge switch by shunt, additional resistance, discharge device successively with the second common port of described voltage divider.The test circuit that the application provides, can be powered to capacitor by power circuit, DC voltage remaining after analog capacitor separating brake, then interrupting power circuit, close discharge switch, utilize accessory circuits and discharge device to discharging capacitors, and detect sparking voltage and discharge current by voltage divider and shunt, realize detecting different discharge device to the object of capacitor discharge rate.
Description
Technical field
The application relates to capacitor detection technique field, more particularly, relates to a kind of capacitor discharge speed test circuitry and proving installation.
Background technology
Shunt Capacitor Unit, as capacitive element, is widely used in the reactive-load compensation of electrical network, to improve line voltage and power factor, reduces the damage of circuit.
When switch cut-offs Shunt Capacitor Unit, due to the singularity of load, between contact, there is higher recovery voltage.After dropout current blow-out, residual charge on Capacitor banks cannot discharge at short notice, residual voltage on supply voltage and Capacitor banks is reverse, cause between breaker fracture and bear higher restoring over-voltage for a long time, once the insulation recovery intensity of vacuum circuit breaker can not bear the restoring over-voltage added thereon, very easily there is arc reignition.
In order to solve this problem, discharge device is generally selected to discharge to shnt capacitor.But prior art shortage is a kind of tests the scheme of different discharge device on the impact of capacitor discharge speed, cannot determine whether discharge device meets the requirement to capacitor residue tension discharge speed.
Utility model content
In view of this, this application provides a kind of capacitor discharge speed test circuitry and proving installation, for providing a kind of capacitor discharge speed trial scheme, to verify the impact of dissimilar discharge device on capacitor residue tension discharge speed.
To achieve these goals, the existing scheme proposed is as follows:
A kind of capacitor discharge speed test circuitry, comprising:
To the power circuit that capacitor is powered, described power circuit comprises power switch;
In parallel with described capacitor, to detect the voltage divider of described condenser voltage;
Described capacitor is connected with the first end of discharge switch with the first common port of described voltage divider, and described capacitor is connected with the second end of described discharge switch by shunt, additional resistance, discharge device successively with the second common port of described voltage divider.
Preferably, described power circuit comprise adjustable transformer and be attached thereto step-up transformer time,
Described test circuit also comprises commutation diode, and described commutation diode is arranged on the secondary of described step-up transformer.
Preferably, also comprise:
The voltage stabilizing diode in parallel with described capacitor.
Preferably, also comprise:
Be connected on the thermistor of described step-up transformer secondary.
Preferably, described voltage divider is divider.
Preferably, described shunt is direct current shunt.
Preferably, described additional resistance is slide rheostat.
Preferably, described power circuit is Switching Power Supply.
Preferably, described power circuit is linear power supply.
A kind of capacitor discharge speed testing device, comprises capacitor discharge speed test circuitry described above, and is arranged on the housing of described capacitor discharge speed test circuitry outside.
As can be seen from above-mentioned technical scheme, the capacitor discharge speed test circuitry that the embodiment of the present application provides, comprise: the power circuit that capacitor is powered, in parallel with described capacitor, in order to detect the voltage divider of described condenser voltage, described capacitor is connected with the first end of discharge switch with the first common port of described voltage divider, and described capacitor is connected with the second end of described discharge switch by shunt, additional resistance, discharge device successively with the second common port of described voltage divider.The test circuit that the application provides, can be powered to capacitor by power circuit, DC voltage remaining after analog capacitor separating brake, then interrupting power circuit, close discharge switch, utilize accessory circuits and discharge device to discharging capacitors, and detect sparking voltage and discharge current by voltage divider and shunt, realize detecting different discharge device to the object of capacitor discharge rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only the embodiment of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
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 kind of 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 process flow diagram disclosed in the embodiment of the present application;
Fig. 4 is the embodiment of the present application another capacitor discharge speed test circuitry structural representation disclosed.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
See Fig. 1, Fig. 1 a kind of capacitor discharge speed test circuitry structural representation disclosed in the embodiment of the present application.
As shown in Figure 1, this circuit comprises:
To the power circuit VCC that capacitor C powers;
Wherein, power circuit VCC can power for capacitor C, and with DC voltage remaining after analog capacitor separating brake, power circuit VCC comprises power switch (not marking in Fig. 1), can be controlled the switch of power circuit by power switch.
In parallel with described capacitor C, to detect the voltage divider U of described capacitor C voltage;
Wherein, voltage divider U can the voltage of sensing capacitor.
Described capacitor C is connected with the first end of discharge switch K2 with first common port of described voltage divider U, and described capacitor C is connected with second end of described discharge switch K2 by shunt A, additional resistance R, discharge device W successively with second common port of described voltage divider U.
Wherein, discharge device W is discharge device to be measured, and after merging discharge switch K2, discharge device W can discharge to capacitor C.Annex resistance R can simulate and regulate discharge loop resistance.
The capacitor discharge speed test circuitry that the embodiment of the present application provides, comprise: the power circuit that capacitor is powered, in parallel with described capacitor, in order to detect the voltage divider of described condenser voltage, described capacitor is connected with the first end of discharge switch with the first common port of described voltage divider, and described capacitor is connected with the second end of described discharge switch by shunt, additional resistance, discharge device successively with the second common port of described voltage divider.The test circuit that the application provides, can be powered to capacitor by power circuit, DC voltage remaining after analog capacitor separating brake, then interrupting power circuit, close discharge switch, utilize accessory circuits and discharge device to discharging capacitors, and detect sparking voltage and discharge current by voltage divider and shunt, realize detecting different discharge device to the object of capacitor discharge rate.
See Fig. 2, Fig. 2 another kind of capacitor discharge speed test circuitry structural representation disclosed in the embodiment of the present application.
In Fig. 2, limit power circuit VCC, it can comprise adjustable transformer T1 and step-up transformer T2, on this basis, also needs to increase commutation diode D at the secondary of step-up transformer T2.
Wherein, adjustable transformer T1 comprises power switch K1.
When utilizing the test circuit shown in Fig. 2 to test, specific implementation process is: whole process is divided into charging process and discharge process.Charging process is: close power switch K1, divide discharge switch K2, regulate adjustable transformer T1, boost through step-up transformer T2, by commutation diode D rectification, charge to capacitor C, monitor on capacitor C, whether DC voltage arrives preset value simultaneously, if do not arrived, continue to regulate adjustable transformer T1, until DC voltage arrives preset value on capacitor C.Discharge process is: arrive after preset value until DC voltage on capacitor C, independent power source K switch 1, close discharge switch K2, by DC voltage on discharge device W and additional resistance R releasing capacitor C, utilize voltage divider U and shunt A to monitor capacitor C DC voltage and discharge loop electric current simultaneously, judge capacitor discharge speed.Specific works flow process as shown in Figure 3.Method shown in Fig. 3 comprises:
Step S100, described power circuit is utilized to charge to described capacitor;
Step S110, judge whether the magnitude of voltage that voltage divider shows reaches preset value;
If so, then perform step S120, disconnect described power circuit, and the described discharge switch that closes;
Step S130, the magnitude of voltage utilizing described voltage divider and described shunt to export and current value, determine capacitor discharge speed.
It should be noted that, power circuit, except realizing in the manner shown in figure 2, can also be Switching Power Supply or linear power supply, can direct output of DC current stream be that capacitor charges.
Further, be the embodiment of the present application another capacitor discharge speed test circuitry structural representation disclosed see Fig. 4, Fig. 4.
Compared to further increasing the voltage stabilizing diode DZ in parallel with capacitor C in Fig. 2, Fig. 4.Voltage stabilizing diode can prevent the breakdown potential container due to overtension.
Further, can also at the secondary series thermal-sensitive resistance of described step-up transformer T2, to prevent surge impact.
It is to be understood that above-mentioned voltage divider can be divider, shunt is direct current shunt.Annex resistance can slide rheostat, to carry out resistance adjustment easily.
On the basis of the above, the embodiment of the present application additionally provides a kind of capacitor discharge speed testing device, and this proving installation comprises housing and is arranged on the test circuit in housing, and test circuit is the capacitor discharge speed test circuitry of above-mentioned introduction.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the application.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from the spirit or scope of the application, can realize in other embodiments.Therefore, the application can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a capacitor discharge speed test circuitry, is characterized in that, comprising:
To the power circuit that capacitor is powered, described power circuit comprises power switch;
In parallel with described capacitor, to detect the voltage divider of described condenser voltage;
Described capacitor is connected with the first end of discharge switch with the first common port of described voltage divider, and described capacitor is connected with the second end of described discharge switch by shunt, additional resistance, discharge device successively with the second common port of described voltage divider.
2. test circuit according to claim 1, is characterized in that, described power circuit comprise adjustable transformer and be attached thereto step-up transformer time,
Described test circuit also comprises commutation diode, and described commutation diode is arranged on the secondary of described step-up transformer.
3. test circuit according to claim 2, is characterized in that, also comprises:
The voltage stabilizing diode in parallel with described capacitor.
4. test circuit according to claim 2, is characterized in that, also comprises:
Be connected on the thermistor of described step-up transformer secondary.
5. test circuit according to claim 2, is characterized in that, described voltage divider is divider.
6. require the test circuit described in 2 according to right, it is characterized in that, described shunt is direct current shunt.
7. test circuit according to claim 2, is characterized in that, described additional resistance is slide rheostat.
8. test circuit according to claim 1, is characterized in that, described power circuit is Switching Power Supply.
9. test circuit according to claim 1, is characterized in that, described power circuit is linear power supply.
10. a capacitor discharge speed testing device, is characterized in that, comprises the capacitor discharge speed test circuitry described in claim 1-9 any one, and is arranged on the housing of described capacitor discharge speed test circuitry outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420615775.5U CN204086434U (en) | 2014-10-22 | 2014-10-22 | A kind of capacitor discharge speed test circuitry and proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420615775.5U CN204086434U (en) | 2014-10-22 | 2014-10-22 | A kind of capacitor discharge speed test circuitry and proving installation |
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| Publication Number | Publication Date |
|---|---|
| CN204086434U true CN204086434U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420615775.5U Expired - Fee Related CN204086434U (en) | 2014-10-22 | 2014-10-22 | A kind of capacitor discharge speed test circuitry and proving installation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267297A (en) * | 2014-10-22 | 2015-01-07 | 国家电网公司 | Testing circuit, device and method for capacitor discharge speed |
-
2014
- 2014-10-22 CN CN201420615775.5U patent/CN204086434U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104267297A (en) * | 2014-10-22 | 2015-01-07 | 国家电网公司 | Testing circuit, device and method for capacitor discharge speed |
| CN104267297B (en) * | 2014-10-22 | 2017-09-22 | 国家电网公司 | A kind of capacitor discharge speed test circuitry, test device and method of testing |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |