CN201796095U - Capacitor bank fault tester - Google Patents
Capacitor bank fault tester Download PDFInfo
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- CN201796095U CN201796095U CN2010205233039U CN201020523303U CN201796095U CN 201796095 U CN201796095 U CN 201796095U CN 2010205233039 U CN2010205233039 U CN 2010205233039U CN 201020523303 U CN201020523303 U CN 201020523303U CN 201796095 U CN201796095 U CN 201796095U
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- capacitor
- capacitor bank
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- bank
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Abstract
The utility model relates to a capacitor bank fault tester, wherein a first capacitor bank, a second capacitor bank, a third capacitor bank and a fourth capacitor are connected to form a bridge loop; a node between the first capacitor bank and the second capacitor bank, and a node between the third capacitor bank and the fourth capacitor are in bridge joint with a variable frequency power source; and a node between the first capacitor bank and the third capacitor bank, and a node between the second capacitor bank and the fourth capacitor are in bridge joint with an ammeter. By utilizing the characteristic that the total capacitance of each capacitor bank is basically same, the four capacitor banks are combined into a bridge loop; the variable frequency power source is added at one end, and the other end is used for measuring whether the bridge loop is in balance; if not in balance, the tester can display which capacitor bank is abnormal, and then the high-voltage capacitors in the capacitor bank are measured one by one until the capacitor having the fault is found. The workload of field test personnel in doing high-voltage capacitor tests can be greatly reduced, and the test process is simple and safe.
Description
Technical field
The utility model relates to a kind of capacitor group failure tester.
Background technology
Judge whether the high-voltage power capacitor that moves in the electric system has inherent vice or fault, method commonly used is measurement insulation resistance, measures methods such as electric capacity and measurement insulation dielectric loss that wherein measuring the high-voltage capacitor electric capacitance change is a comparatively directly determination methods.
The capacitor group of electric system, need all be tested every capacitor for realizing the detection to single capacitor fault generally by a lot of single capacitor connection in series-parallel and be divided into capacitor group operation, and the experiment work amount is bigger.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and a kind of capacitor group failure tester is provided.
The purpose of this utility model is achieved through the following technical solutions:
Capacitor group failure tester, it is characterized in that: connect and compose bridge type return by the first capacitor group, the second capacitor group, the 3rd capacitor group and the 4th capacitor group, cross-over connection variable-frequency power sources between the node between node between the first capacitor group and the second capacitor group and the 3rd capacitor group and the 4th capacitor group, cross-over connection reometer between the node between the node between the first capacitor group and the 3rd capacitor group and the second capacitor group and the 4th capacitor group.
Further, above-mentioned capacitor group failure tester, wherein, the output voltage of described variable-frequency power sources is 200V, frequency is 47.5Hz and 52.5Hz.
The substantive distinguishing features of technical solutions of the utility model and progressive being mainly reflected in:
Utilize the essentially identical feature of capacitor group total capacitance, four capacitor groups are formed bridge type return, add whether balance of variable-frequency power sources, other end measuring bridge loop by an end, if it is uneven, instrument shows which group electric capacity is undesired, measure one by one this group high-voltage capacitor this moment again, up to the fault capacitor that detects wherein.Easy to use, can reduce the site test personnel greatly and carry out the high-voltage capacitor workload in when test, process of the test is simpler and easy, safer.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Fig. 1: organigram of the present utility model.
The implication of each Reference numeral sees the following form among the figure:
Embodiment
As shown in Figure 1, capacitor group failure tester, connect and compose bridge type return by the first capacitor group 1, the second capacitor group 2, the 3rd capacitor group 3 and the 4th capacitor group 4, cross-over connection variable-frequency power sources between the node E that node D that the first capacitor group 1 and the second capacitor group are 2 and the 3rd capacitor group 3 and the 4th capacitor group are 4, the output voltage of variable-frequency power sources is 200V, and frequency is 47.5Hz and 52.5Hz; Cross-over connection reometer 5 between the node G that the node F that the first capacitor group 1 and the 3rd capacitor group are 3 and the second capacitor group 2 and the 4th capacitor group are 4.
Design alien frequencies out-put supply and jamproof measurement loop; Utilize the characteristics of the normal parallel running of capacitor group, the capacitor group that forms bridge type return is adopted bridge measurement, whether result's imbalance can be discerned any one of them electric capacity arm fault element.
The electric capacitance change of electric system high-voltage capacitor can be judged the open circuit and the partial short-circuit of capacitor, utilize the essentially identical feature of capacitor group total capacitance, four capacitor groups are formed bridge type return, add whether balance of variable-frequency power sources, other end measuring bridge loop by an end, if it is uneven, instrument can show which group electric capacity is undesired, and measure one by one this group high-voltage capacitor this moment again, up to the fault capacitor that detects wherein.
The alien frequencies output voltage U
DE=200V establishes X
C1=X
C2=X
C3=X
C4, U then
C1=U
C2=U
C3=U
C4, A=0.If C
1～C
4Arbitrary group of capacitance increases (there is short circuit inside) or reduces (there is open circuit inside), electric bridge imbalance then, and reometer 5 has electric current to show.Disturb for reducing power frequency, design adopts alien frequencies to export as supply voltage near the 47.5Hz and the 52.5Hz of power frequency again.
In sum, the utility model modern design, easy to use, reduce the site test personnel greatly and carry out the high-voltage capacitor workload in when test, and make process of the test simpler and easy, safer.
It is emphasized that: above only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. capacitor group failure tester, it is characterized in that: connect and compose bridge type return by the first capacitor group, the second capacitor group, the 3rd capacitor group and the 4th capacitor group, cross-over connection variable-frequency power sources between the node between node between the first capacitor group and the second capacitor group and the 3rd capacitor group and the 4th capacitor group, cross-over connection reometer between the node between the node between the first capacitor group and the 3rd capacitor group and the second capacitor group and the 4th capacitor group.
2. according to the described capacitor group of claim 1 failure tester, it is characterized in that: the output voltage of described variable-frequency power sources is 200V, and frequency is 47.5Hz and 52.5Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205233039U CN201796095U (en) | 2010-09-09 | 2010-09-09 | Capacitor bank fault tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205233039U CN201796095U (en) | 2010-09-09 | 2010-09-09 | Capacitor bank fault tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201796095U true CN201796095U (en) | 2011-04-13 |
Family
ID=43851001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205233039U Expired - Fee Related CN201796095U (en) | 2010-09-09 | 2010-09-09 | Capacitor bank fault tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN201796095U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868147A (en) * | 2012-09-24 | 2013-01-09 | 杭州四达电炉成套设备有限公司 | Voltage-sharing detection protector for serially connected capacitors |
| CN103344843A (en) * | 2013-07-29 | 2013-10-09 | 国家电网公司 | Measurement system of series compensation capacitor group |
| CN103364640A (en) * | 2012-03-31 | 2013-10-23 | 上海熙凌电器有限公司 | Full-automation balancing device for high-voltage capacitance bridge and balancing method |
| CN103376375A (en) * | 2012-04-27 | 2013-10-30 | 上海三菱电梯有限公司 | Capacitor set internal connection mode identification and parameter setting method |
| CN104569672A (en) * | 2014-12-31 | 2015-04-29 | 上海思源电力电容器有限公司 | Power frequency superposition harmonic wave testing device for capacitor |
| CN107144737A (en) * | 2017-06-09 | 2017-09-08 | 华北电力科学研究院有限责任公司 | A kind of series capacitor compensation element fault monitoring method and device |
| CN109061353A (en) * | 2018-09-05 | 2018-12-21 | 山西太钢不锈钢股份有限公司 | A kind of electric furnace reactive-load compensation capacitor fault detection method |
| TWI721897B (en) * | 2020-06-01 | 2021-03-11 | 台達電子工業股份有限公司 | Detection apparatus for unbalanced dc link capacitor voltage |
-
2010
- 2010-09-09 CN CN2010205233039U patent/CN201796095U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364640A (en) * | 2012-03-31 | 2013-10-23 | 上海熙凌电器有限公司 | Full-automation balancing device for high-voltage capacitance bridge and balancing method |
| CN103376375A (en) * | 2012-04-27 | 2013-10-30 | 上海三菱电梯有限公司 | Capacitor set internal connection mode identification and parameter setting method |
| CN104833877A (en) * | 2012-04-27 | 2015-08-12 | 上海三菱电梯有限公司 | Capacitor set internal connection mode identification and parameter setting method |
| CN103376375B (en) * | 2012-04-27 | 2015-10-28 | 上海三菱电梯有限公司 | Capacitor set internal connection mode identification and parameter setting method |
| CN104833877B (en) * | 2012-04-27 | 2017-09-29 | 上海三菱电梯有限公司 | Capacitor set internal connection mode identification and parameter setting method |
| CN102868147A (en) * | 2012-09-24 | 2013-01-09 | 杭州四达电炉成套设备有限公司 | Voltage-sharing detection protector for serially connected capacitors |
| CN102868147B (en) * | 2012-09-24 | 2014-09-03 | 杭州四达电炉成套设备有限公司 | Voltage-sharing detection protector for serially connected capacitors |
| CN103344843A (en) * | 2013-07-29 | 2013-10-09 | 国家电网公司 | Measurement system of series compensation capacitor group |
| CN104569672A (en) * | 2014-12-31 | 2015-04-29 | 上海思源电力电容器有限公司 | Power frequency superposition harmonic wave testing device for capacitor |
| CN107144737A (en) * | 2017-06-09 | 2017-09-08 | 华北电力科学研究院有限责任公司 | A kind of series capacitor compensation element fault monitoring method and device |
| CN109061353A (en) * | 2018-09-05 | 2018-12-21 | 山西太钢不锈钢股份有限公司 | A kind of electric furnace reactive-load compensation capacitor fault detection method |
| TWI721897B (en) * | 2020-06-01 | 2021-03-11 | 台達電子工業股份有限公司 | Detection apparatus for unbalanced dc link capacitor voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20110909 |