CN103941125B - A kind of CURRENT DISTRIBUTION experimental rig and test method - Google Patents
A kind of CURRENT DISTRIBUTION experimental rig and test method Download PDFInfo
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- CN103941125B CN103941125B CN201410163713.XA CN201410163713A CN103941125B CN 103941125 B CN103941125 B CN 103941125B CN 201410163713 A CN201410163713 A CN 201410163713A CN 103941125 B CN103941125 B CN 103941125B
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Abstract
The present invention relates to a kind of CURRENT DISTRIBUTION experimental rig and test method, experimental rig includes generator, transformer, first and second switch, first and second divider, current divider, first and second measuring unit, wherein generator is connected with the primary coil of transformer by first switch, first divider is connected to the two ends of the secondary coil of transformer, second divider is connected on the two ends of the secondary coil of transformer by second switch, second measuring unit is connected with the first divider and the second divider, some circuits composed in series by test product and current divider are connected to the two ends of the secondary coil of transformer by second switch, and the common port that is connected with current divider of test product and the connection of the first measuring unit.The present invention is by the opening time of controlling switch come the power-frequency voltage time for controlling to be applied on test product, the power current distribution measuring of the multicolumn parallel resistance piece post of the series compensation device MOV element under power-frequency voltage is solved the problems, such as, the reliability service for MOV provides strong test data and guarantee.
Description
Technical field
The present invention relates to a kind of CURRENT DISTRIBUTION experimental rig and test method, more particularly to a kind of metal oxide pressure-limiting device
（Metal Oxide Voltage Limiter, abbreviation MOV）Power current distribution test device and test method, belong to electric current
The innovative technology of distribution test device and test method.
Background technology
With the development of China's electric utility, transmission line capability and distance are continuously increased, using the flexible transmission of series compensation
Developed rapidly.MOV is the important protection electrical equipment of series compensation device, is extensively applied in series compensation device.MOV is due in fortune
Larger energy is absorbed in row, therefore MOV is in parallel using multicolumn resistor disc, power current distributions of the MOV under its operating condition
Measurement and research be very important to the operational reliability of MOV.CURRENT DISTRIBUTION measurement at present to MOV is general using impact
Current feedback circuit measures its CURRENT DISTRIBUTION, cannot also be to the power frequency electric flow point under its operating condition of the whole elements of MOV
Cloth is tested, the CURRENT DISTRIBUTION measurement of each point particularly under power current ripple.
The content of the invention
It is an object of the invention to provide a CURRENT DISTRIBUTION experimental rig, present invention solution series compensation device under power-frequency voltage
The power current distribution measuring problem of the multicolumn parallel resistance piece post of MOV elements, and power-frequency voltage and current waveform parameter
Measurement and record, the reliability service for MOV provide strong test data and guarantee.
Another object of the present invention is to provide a kind of test method of CURRENT DISTRIBUTION experimental rig simple to operation.
In order to achieve the above object, the present invention is employed the following technical solutions and is achieved：
The CURRENT DISTRIBUTION experimental rig of the present invention, including generator, transformer, first switch, second switch, the first partial pressure
Device, the second divider, test product, current divider, the first measuring unit, the second measuring unit, wherein generator by first switch with
The primary coil connection of transformer, the first divider are connected to the two ends of the secondary coil of transformer, and the second divider is by the
Two switches are connected on the two ends of the secondary coil of transformer, and the second measuring unit is connected with the first divider and the second divider, if
The dry circuit composed in series by test product and current divider is connected to the two ends of the secondary coil of transformer, and test product by second switch
The common port being connected with current divider and the connection of the first measuring unit.
The test method of the CURRENT DISTRIBUTION experimental rig of the present invention, comprises the steps：
1）Close second switch, starter-generator, first switch of closing, and power-frequency voltage is applied to by transformer boost
On test product, the power-frequency voltage time being applied on test product is controlled by the opening time of the second controlling switch；
2）Second measuring unit gathers the voltage waveform and width of the first divider and the second divider respectively using capture card
Value；First measuring unit gathers the current waveform and amplitude of each current divider using capture card；
3）The data in the first measuring unit on capture card are read using card reader, using current wave of the computer to test product
Shape parameter is analyzed and records, and obtains the CURRENT DISTRIBUTION of the power current ripple each point of each test product in parallel.
The present invention as a result of including Large Copacity short-circuit generator, step-up transformer, the structure of linked switch, and logical
Cross switch to control to be applied to the duration of power-frequency voltage on test product, using different divider measurement supply voltages and test product
Voltage, the electric current of MOV is measured using divertor or current mutual inductor coil.Realize element whole to MOV
Power current distribution under its operating condition is tested, the CURRENT DISTRIBUTION measurement of each point particularly under power current ripple.
The present invention solves the power current distribution measuring of the multicolumn parallel resistance piece post of series compensation device MOV element under power-frequency voltage and asks
Topic, and measurement and the record of power-frequency voltage and current waveform parameter, the reliability service for MOV provide strong test data
And guarantee.The test method of the CURRENT DISTRIBUTION experimental rig of the present invention is simple to operation.
Description of the drawings
Fig. 1 is the schematic diagram of CURRENT DISTRIBUTION experimental rig of the present invention.
Specific embodiment
With reference to Fig. 1, the CURRENT DISTRIBUTION experimental rig of the present invention, including generator 1, transformer 2, first switch 3, second open
The 4, first divider 5, the second divider 6, test product 7, current divider 8, the first measuring unit 9, the second measuring unit 10 are closed, wherein sending out
Motor 1 is connected with the primary coil of transformer 2 by first switch 3, and the first divider 5 is connected to the secondary coil of transformer 2
Two ends, the second divider 6 is connected to the two ends of the secondary coil of transformer 2 by second switch 4, the second measuring unit 10 with
First divider 5 and the second divider 6 connect, some to pass through second switch 4 by the circuit that test product 7 and current divider 8 are composed in series
It is connected to the two ends of the secondary coil of transformer 2, and the common port that is connected with current divider 8 of test product 7 and the first measuring unit 9 is connected
Connect.
In the present embodiment, first divider 5 is used for the voltage of the secondary coil of measuring transformer 2；The transformer 2
Secondary coil be connected with test product 7 by second switch 4；First switch 3 and second switch 4 are for controlling to be applied on test product 7
Power-frequency voltage and the duration；Second divider 6 in parallel with test product 7 is used for measuring the voltage of test product 7；Connect with test product 7
Current divider 8 be used for measuring the electric current of test product 7；The test product 7 is composed in parallel for multiple resistor disc posts, each parallel resistance piece post
Connect with a current divider 8.
In the present embodiment, above-mentioned second measuring unit 10 gathers the first divider 5 and the second partial pressure respectively using capture card
The voltage waveform and amplitude of device 6.Above-mentioned first measuring unit 9 using capture card gather respectively each current divider 8 current waveform and
Amplitude.Above-mentioned generator 1 adopts jumbo short-circuit generator.Above-mentioned first divider 5 and the second divider 6 are using electric capacity point
Depressor.Above-mentioned current divider 8 adopts divertor or current mutual inductor coil.
Additionally, above-mentioned first measuring unit 9 and the second measuring unit 10 are provided with provides communication with to host computer
Interface.First measuring unit 9 and the second measuring unit 10 are by communication cable, optical fiber and wireless telecommunications passing through for collecting
The voltage of test product 7, current waveform parameter and result of calculation are transferred in host computer.
The test method of CURRENT DISTRIBUTION experimental rig of the present invention, comprises the steps：
1）Close second switch 4, starter-generator 1, first switch of closing 3, and power-frequency voltage is applied by transformer boost
To on test product 7, the power-frequency voltage time for controlling to be applied on test product 7 by the opening time of the second controlling switch 4；
2）Second measuring unit 10 gathers the voltage waveform of the first divider 5 and the second divider 6 respectively using capture card
And amplitude；First measuring unit 9 gathers the current waveform and amplitude of each current divider 8 using capture card；
3）The data in the first measuring unit 9 on capture card are read using card reader, using electric current of the computer to test product 7
Waveform parameter is analyzed and records, and obtains the CURRENT DISTRIBUTION of the power current ripple each point of each test product in parallel.
Claims (1)
1. a kind of test method of CURRENT DISTRIBUTION experimental rig, CURRENT DISTRIBUTION experimental rig include generator（1）, transformer
（2）, first switch（3）, second switch（4）, the first divider（5）, the second divider（6）, test product（7）, current divider（8）,
One measuring unit（9）, the second measuring unit（10）, wherein generator（1）By first switch（3）With transformer（2）Primary
Coil connects, the first divider（5）It is connected to transformer（2）Secondary coil two ends, the second divider（6）Open by second
Close（4）It is connected to transformer（2）Secondary coil two ends, the second measuring unit（10）With the first divider（5）And second point
Depressor（6）Connection, it is some by test product（7）With current divider（8）The circuit that composes in series is parallel with one another and by second switch（4）Even
It is connected on transformer（2）Secondary coil two ends, and test product（7）With current divider（8）The common port of connection and the first measuring unit
（9）Connection, it is characterised in that the test method of CURRENT DISTRIBUTION experimental rig comprises the steps：
1）Close second switch（4）, starter-generator（1）, first switch of closing（3）, power-frequency voltage applied by transformer boost
It is added to test product（7）On, by second switch（4）Opening time controlling to be applied to test product（7）On the power-frequency voltage time；
2）Second measuring unit（10）The first divider is gathered respectively using capture card（5）With the second divider（6）Voltage wave
Shape and amplitude；First measuring unit（9）Each current divider is gathered using capture card（8）Current waveform and amplitude；
3）The first measuring unit is read using card reader（9）Data on middle capture card, using computer to test product（7）Electric current
Waveform parameter is analyzed and records, and obtains the CURRENT DISTRIBUTION of each test product each point under power current ripple.
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| CN201410163713.XA CN103941125B (en) | 2014-04-23 | 2014-04-23 | A kind of CURRENT DISTRIBUTION experimental rig and test method |
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| CN201410163713.XA CN103941125B (en) | 2014-04-23 | 2014-04-23 | A kind of CURRENT DISTRIBUTION experimental rig and test method |
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| CN103941125B true CN103941125B (en) | 2017-03-29 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105425018B (en) * | 2015-12-31 | 2018-11-13 | 中国西电电气股份有限公司 | A kind of resistor disc column parallel-current distribution test method |
| CN108120890B (en) * | 2017-12-23 | 2020-02-14 | 中国西电电气股份有限公司 | Current distribution method for parallel resistance card columns |
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| CN101598757A (en) * | 2009-07-14 | 2009-12-09 | 中国电力科学研究院 | A kind of controllable metal oxide arrester residual voltage test loop and method |
| CN201532403U (en) * | 2009-09-29 | 2010-07-21 | 中国电力科学研究院 | Rush current generator |
| CN103001235A (en) * | 2012-11-13 | 2013-03-27 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for evaluating risks of MOV (metal oxide varistor) of series capacitive compensator |
| CN103267933A (en) * | 2013-05-02 | 2013-08-28 | 国家电网公司 | Method for measuring partial discharge in transformer induced voltage testing device |
| CN103499729A (en) * | 2013-09-30 | 2014-01-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Measurement method of voltage division ratio of voltage-sharing capacitor for spark gap of series capacitor compensation device |
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| KR101306283B1 (en) * | 2013-05-08 | 2013-09-09 | (주) 에이블리 | A power supply device for testing a semiconductor element |
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| CN101598757A (en) * | 2009-07-14 | 2009-12-09 | 中国电力科学研究院 | A kind of controllable metal oxide arrester residual voltage test loop and method |
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| CN103267933A (en) * | 2013-05-02 | 2013-08-28 | 国家电网公司 | Method for measuring partial discharge in transformer induced voltage testing device |
| CN103499729A (en) * | 2013-09-30 | 2014-01-08 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Measurement method of voltage division ratio of voltage-sharing capacitor for spark gap of series capacitor compensation device |
| CN103675624A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Power-frequency voltage testing device and testing method of lightning arrester |
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