CN202794344U - Capacitor capacitance measuring device - Google Patents
Capacitor capacitance measuring device Download PDFInfo
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- CN202794344U CN202794344U CN 201220405804 CN201220405804U CN202794344U CN 202794344 U CN202794344 U CN 202794344U CN 201220405804 CN201220405804 CN 201220405804 CN 201220405804 U CN201220405804 U CN 201220405804U CN 202794344 U CN202794344 U CN 202794344U
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- 239000003990 capacitor Substances 0.000 title claims abstract description 50
- 238000012360 testing method Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The present utility model discloses a capacitor capacitance measuring device. In the device, an adjustable capacitor is adjusted, thus when current value of the adjustable capacitor is equal to current value of a measured capacitor set branch collected by a clip-on ammeter, capacitance capacity of the adjustable capacitor is capacitance capacity of the measured capacitor set branch, thus the device can be used for rapidly measuring capacitance capacity of capacitors of multiple parallel-connected measured capacitor branches, and efficiency can be enhanced.
Description
Technical field
The utility model relates to technical field of power systems, particularly a kind of condenser capacitance measuring device.
Background technology
In electric system, power capacitor is playing sufficient effect aspect the ability to transmit electricity of improving power system voltage quality and raising transmission line of electricity, therefore as the basic unit's power supply unit that affords electric power networks day-to-day operation and maintenance, to the maintenance of Power capacitor with overhaul the working routine that just becomes schedule.
In ready-made running environment, the mode of connection of capacitor group internal capacitor unit has great difference, common two Parallel-connected Capacitors, three Parallel-connected Capacitors and many Parallel-connected Capacitor modes of connection of comprising.
Wherein, in the process of safeguarding and overhauling, the capacitor group is because the difference of compensation principle, the difference of applied voltage grade, and the difference of internal capacitor unit connection structure, so that on-the-spot lengthy and tedious unusual for the service work of power capacitor, its lengthy and tedious reason mainly contains following 2 points:
(1) actual capacitor group inside is to be connected by the mode of connection of many single capacitors by complexity to form;
(2) when judging whether the inner single original paper of capacitor group contains accident defect, need the reviewer to determine by accurate measurement condenser capacity, therefore, the power capacitor bank interruption maintenance is often needed to measure the capacitance value of hundreds of capacitors.
At the scene in the maintenance, by utilizing the electric current and voltage method, apply the alternating voltage of some at capacitor two interpolars, then utilize clamp on amperemeter to measure the electric current that it flows through, finally obtain its capacitance value, be need to be to all capacitors by only measuring in the prior art, Measuring Time be longer, and workload is larger.
The utility model content
Problem to be solved in the utility model is: a kind of condenser capacitance measuring device is provided, to solve in the prior art in the condenser capacity measurement, need to be longer to the Measuring Time that all capacitors cause by only measuring, the problem that workload is larger.
The utility model provides a kind of condenser capacitance measuring device, comprising:
Alternating current voltage is converted into the power transformer of predeterminated voltage;
Link to each other with the first output port of described power transformer by first interface, control the instrument switch that described device is opened or closed;
Link to each other with the second interface of described instrument switch, regulate the adjustable condenser that the selfcapacity amount makes it equate with the testing capacitor electric capacity;
Link to each other with described adjustable condenser, gather the current transformer by the current value of described adjustable condenser;
Described current transformer links to each other with the second output port of described power transformer;
Described device also comprises: gather respectively the clamp on amperemeter by current value on many branch roads in the described measured capacitance device group;
Link to each other the gauge tap of control clamp on amperemeter data transmission with described clamp on amperemeter by first interface;
Link to each other with the second interface of described current transformer and described gauge tap, current value on the current value that passes through described adjustable condenser that collects and each branch road that passes through described measured capacitance device group that collects is compared, and regulate the capacitance of described adjustable condenser by the comparative result that obtains, and the processor of will be final measured capacitance input instrument display screen.
Preferably, also comprise:
Link to each other the display screen that the capacitance value of described adjustable condenser is shown with described processor.
As can be seen from the above technical solutions, in the utility model, a kind of condenser capacitance measuring device is provided, can measure simultaneously the electric capacity of the capacitor on the branched measured capacitance device group branch road, described clamp on amperemeter is linked to each other with described testing capacitor, gather the current value by described testing capacitor, under the identical condition of each parallel branch voltage, gather and pass through the wherein current value of a capacitor of described testing capacitor, regulate again the capacitance of described adjustable condenser, when making current value by described adjustable condenser wherein the current value of a capacitor equating with the described testing capacitor that collects, this moment, the capacitance of described adjustable condenser was the wherein capacitance of a capacitor of described testing capacitor, again by regulating the capacitance of described adjustable condenser, when making current value and the described testing capacitor that collects by described adjustable condenser wherein the current value of another capacitor be the same, this moment, the capacitance of described adjustable condenser was the wherein capacitance of another capacitor of described testing capacitor, in like manner can realize the measurement to the electric capacity of other measured capacitance devices in the measured capacitance device group, the Measuring Time that can make is shorter, workload can reduce accordingly, has improved work efficiency.
Description of drawings
Fig. 1 is the structural representation of the disclosed a kind of condenser capacitance measuring device of the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills belong to protection domain of the present utility model not making the every other embodiment that obtains under the creative work prerequisite.
The utility model embodiment discloses a kind of condenser capacitance measuring device, described application of installation is in measuring measured capacitance device group, described measured capacitance device group comprises many measured capacitance device branch roads in parallel, and Fig. 1 is the structural representation of described device, and described device comprises:
The second interface of described instrument switch 102 links to each other with the adjustable condenser 103 that adjusting selfcapacity amount equates itself and testing capacitor electric capacity;
Described adjustable condenser 103 links to each other with the current transformer 104 of collection by the current value of described adjustable condenser 103;
Described current transformer 104 links to each other with the second output port of described power transformer 101;
Described device also comprises: clamp on amperemeter 105;
Described clamp on amperemeter 105 is used for, and gathers respectively by the current value on many branch roads in the described measured capacitance device group;
Described clamp on amperemeter links to each other with the first interface of the gauge tap 106 of control clamp on amperemeter data transmission,
Wherein, described gauge tap has played the effect of selecting of measuring, when a closed gauge tap, the clamp on amperemeter that namely links to each other with described gauge tap is with the data input processor that records, when closed two gauge tap, the data input processor that namely will record separately with clamp on amperemeter that described two gauge tap link to each other respectively, when many gauge tap of closure, the data input processor that namely will record separately with clamp on amperemeter that described many gauge tap link to each other respectively;
By described gauge tap, can be come by the user number of the measured capacitance device of control survey, more flexible and convenient.
Link to each other with the second interface of described current transformer 104 and described gauge tap 106, current value on the current value that passes through described adjustable condenser that collects and each branch road that passes through described measured capacitance device group that collects is compared, and regulate the capacitance of described adjustable condenser by the comparative result that obtains, and the processor 107 of will be final measured capacitance input instrument display screen.
The course of work of described condenser capacitance measuring device is as follows:
When described measured capacitance device group comprises a measured capacitance device branch road, when measuring the electric capacity of the capacitor C on the described branch road, current value I on the described branch road of measuring by the described clamp on amperemeter that is clipped on the described branch road, by regulating adjustable condenser, making the current value by described adjustable condenser is I, at this moment, the capacitance of adjustable condenser is the electric capacity of capacitor C.
Wherein, when measured capacitance device group comprises two shnt capacitor branch roads, measure the capacitor C on described two branch roads
1And C
2Electric capacity the time, two current value I on two branch roads measuring by the described clamp on amperemeter that is clipped in respectively on described two branch roads
1And I
2, by regulating adjustable condenser, making the current value by described adjustable condenser is I
1, at this moment, the capacitance of adjustable condenser is capacitor C
1Electric capacity, then by regulating adjustable condenser, making the current value by described adjustable condenser is I
2, at this moment, the capacitance of adjustable condenser is capacitor C
2Electric capacity.
The same, when measured capacitance device group comprise three, during four shnt capacitor branch roads, measuring principle is the same.
In the present embodiment, a kind of condenser capacitance measuring device is disclosed, described device is by regulating adjustable condenser, when current value on the measured capacitance device group branch road that collects by the current value on the described adjustable condenser and described clamp on amperemeter is equated, the electric capacity of adjustable condenser is the condenser capacity on the measured capacitance device group branch road at this moment, when measured capacitance device group comprises many measured capacitance device branch roads in parallel, can measure simultaneously many, save the time, improved efficient.
Preferably, described device also comprises: display screen;
Described display screen links to each other with described processor, and the capacitance value of described adjustable condenser is shown;
Can obtain intuitively the capacitance value of adjustable condenser by described display screen, make things convenient for the user, the user uses more convenient.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the disclosed method of embodiment, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment is apparent to those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the wide region consistent with principle disclosed herein and features of novelty.
Claims (2)
1. a condenser capacitance measuring device is characterized in that, described application of installation is in measuring measured capacitance device group, and described measured capacitance device group comprises many measured capacitance device branch roads in parallel;
Described condenser capacitance measuring device comprises:
Alternating current voltage is converted into the power transformer of predeterminated voltage;
Link to each other with the first output port of described power transformer by first interface, control the instrument switch that described device is opened or closed;
Link to each other with the second interface of described instrument switch, regulate the adjustable condenser that the selfcapacity amount makes it equate with the testing capacitor electric capacity;
Link to each other with described adjustable condenser, gather the current transformer by the current value of described adjustable condenser;
Described current transformer links to each other with the second output port of described power transformer;
Described device also comprises: gather respectively the clamp on amperemeter by current value on many branch roads in the described measured capacitance device group;
Link to each other the gauge tap of control clamp on amperemeter data transmission with described clamp on amperemeter by first interface;
Link to each other with the second interface of described current transformer and described gauge tap, current value on the current value that passes through described adjustable condenser that collects and each branch road that passes through described measured capacitance device group that collects is compared, and regulate the capacitance of described adjustable condenser by the comparative result that obtains, and the processor of will be final measured capacitance input instrument display screen.
2. condenser capacitance measuring device according to claim 1 is characterized in that, also comprises:
Link to each other the display screen that the capacitance value of described adjustable condenser is shown with described processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220405804 CN202794344U (en) | 2012-08-15 | 2012-08-15 | Capacitor capacitance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220405804 CN202794344U (en) | 2012-08-15 | 2012-08-15 | Capacitor capacitance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794344U true CN202794344U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220405804 Expired - Lifetime CN202794344U (en) | 2012-08-15 | 2012-08-15 | Capacitor capacitance measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202794344U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344843A (en) * | 2013-07-29 | 2013-10-09 | 国家电网公司 | Measurement system of series compensation capacitor group |
| CN104133115A (en) * | 2013-03-15 | 2014-11-05 | 英飞凌科技股份有限公司 | Apparatus and method for generating sensor signal indicating information on capacitance of variable capacitor |
-
2012
- 2012-08-15 CN CN 201220405804 patent/CN202794344U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104133115A (en) * | 2013-03-15 | 2014-11-05 | 英飞凌科技股份有限公司 | Apparatus and method for generating sensor signal indicating information on capacitance of variable capacitor |
| CN103344843A (en) * | 2013-07-29 | 2013-10-09 | 国家电网公司 | Measurement system of series compensation capacitor group |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |