CN204556781U - The test loop of section of an arrester operating duty - Google Patents
The test loop of section of an arrester operating duty Download PDFInfo
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- CN204556781U CN204556781U CN201520284541.1U CN201520284541U CN204556781U CN 204556781 U CN204556781 U CN 204556781U CN 201520284541 U CN201520284541 U CN 201520284541U CN 204556781 U CN204556781 U CN 204556781U
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- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model discloses a kind of test loop of section of an arrester operating duty, comprise the section of an arrester trial target be connected in test loop, also comprise charge circuit, dash current loop, switch and power-frequency voltage loop, described charge circuit is connected with described dash current loop, described dash current loop is connected with described section of an arrester trial target, and described power-frequency voltage loop is connected with described section of an arrester trial target by described switch.The test loop of the utility model section of an arrester operating duty can be used for examining section of an arrester operating duty under lightning impulse and the tolerance of switching impulse energy, not only economy but also practical, the reliability service for lightning arrester provides strong test figure and guarantee.
Description
Technical field
The utility model relates to the load test loop of electric system, more particularly, relates to a kind of test loop of section of an arrester operating duty.
Background technology
China was under the prerequisite improving power transmission quality and promotion flexible transmission in recent years, build many high pressure strings and mend station, but mend in the process put into operation at station at string and there occurs a lot of accident, especially 500kV string mends MOV pressure relieving event, have a strong impact on the normal use that string mends device.
Wherein main fault type breaks down exactly under power-frequency overvoltage, and the form of expression of its fault mostly is the side flashover of resistor disc.Require only to have carried out long duration electric current resistance test to the energy tolerance in the test routine of the operating duty of section of an arrester according to current national standard, and for examining the lightning impulse of proportional unit and switching impulse energy resistance characteristics not to consider.Therefore existing operating duty cycle test loop cannot verify the operating duty performance of section of an arrester under lightning impulse and the tolerance of switching impulse energy really, have impact on the safe operation of lightning arrester.
Utility model content
The purpose of this utility model is: the test loop providing a kind of section of an arrester operating duty, the reliability service for lightning arrester provides strong test figure and guarantee.
To achieve these goals, the utility model provides a kind of test loop of section of an arrester operating duty, comprise the section of an arrester trial target be connected in test loop, also comprise charge circuit, dash current loop, switch and power-frequency voltage loop, described charge circuit is connected with described dash current loop, described dash current loop is connected with described section of an arrester trial target, and described power-frequency voltage loop is connected with described section of an arrester trial target by described switch.
Improve as one of the present utility model, described dash current loop comprises harmonic electric capacity and the harmonic inductance of series connection.
Improve as one of the present utility model, the one end in described dash current loop is connected with described section of an arrester trial target by a sphere gap, and the other end is connected with described section of an arrester trial target by a current transformer, between described power-frequency voltage loop and described section of an arrester trial target, be parallel with a voltage divider.
Improve as one of the present utility model, described charge circuit is constant-current supply charge circuit.
Improve as one of the present utility model, between described power-frequency voltage loop and described switch, be connected with a protection inductance.
Improve as one of the present utility model, between described power-frequency voltage loop and described protection inductance, be also connected with a pressure regulator.
Compared with prior art, the test loop of the utility model section of an arrester operating duty can be used for examining section of an arrester operating duty under lightning impulse and the tolerance of switching impulse energy, not only economy but also practical, the reliability service for lightning arrester provides strong test figure and guarantee.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, structure of the present utility model and Advantageous Effects thereof are described in detail.
Fig. 1 is the test loop circuit diagram of the utility model section of an arrester operating duty.
Embodiment
In order to make goal of the invention of the present utility model, technical scheme and Advantageous Effects thereof more clear, below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.Should be understood that, the embodiment described in this instructions is only used to explain the utility model, is not intended to limit the utility model.
Refer to Fig. 1, the test loop of the utility model section of an arrester operating duty, the utility model provides a kind of test loop of section of an arrester operating duty, comprises the section of an arrester trial target T be connected in test loop
0, charge circuit, dash current loop, K switch and power-frequency voltage loop, charge circuit is constant-current supply charge circuit and comprises constant-current supply S, power-frequency voltage loop comprises Industrial Frequency Transformer AT, and charge circuit is connected with dash current loop, dash current loop and section of an arrester trial target T
0connect, power-frequency voltage loop is by K switch and section of an arrester trial target T
0connect; Dash current loop comprises harmonic electric capacity C and the harmonic inductance L of series connection, and the one end in dash current loop is by sphere gap G and section of an arrester trial target T
0connect, and the other end is by current transformer I and section of an arrester trial target T
0connect, power-frequency voltage loop and section of an arrester trial target T
0between be parallel with voltage divider V; Be connected with between power-frequency voltage loop and K switch and protect inductance L 1 and pressure regulator TT.
During work, constant-current supply S is to the charging of dash current loop, and clearance G controls to apply rush of current to test product, and K switch is at test product T
0after applying rush of current in 100ms, to test product T
0the power-frequency voltage applied, the duration of power-frequency voltage is controlled by K switch, and amplitude is measured by voltage divider V, and L1 protects inductance.After harmonic electric capacity and harmonic inductance are adjusted, during constant-current supply charging, K switch is opened, and charges to harmonic electric capacity C, and when after assigned voltage of substituting the bad for the good, clearance G triggering discharges, dash current is applied to test product T
0on.After clearance G triggering discharges in 100ms, K switch closes, and power-frequency voltage is applied to test product T
0on, cut-off by K switch the duration accurately controlling to be applied to power-frequency voltage pulse on test product.The voltage divider measurement that loop adopts is applied to the power-frequency voltage on test product, adopts the electric current of current transformer to MOV proportional unit to measure.By the adjustment of harmonic electric capacity and harmonic inductance, the waveform in dash current loop is adjusted to the waveform of regulation checking, its waveform and amplitude are measured by current transformer I.
Dash current loop in the test loop of the utility model section of an arrester operating duty is regulated by harmonic electric capacity C and harmonic inductance L, makes the wave front time t of dash current ripple
fat 1 μ s≤t
fadjustable within the scope of≤10 μ s, the wave rear time is not less than 200 μ s.Constant-current supply controls sphere gap G electric discharge, is applied to test product T after charging and charging to electric capacity C
0on, by waveform and the amplitude of current transformer I read current.Test product T
0after over-current shock tolerance, close a switch K in 100ms, and the power-frequency voltage of regulation is applied on test product, measures the amplitude of the power-frequency voltage applied with voltage divider V, and the duration is controlled by K switch simultaneously.
The beneficial effects of the utility model are: by harmonic electric capacity C and harmonic inductance L, make the wave front time t of dash current ripple
fat 1 μ s≤t
fadjustable within the scope of≤10 μ s, the wave rear time is not less than 200 μ s.Have employed constant-current supply charge circuit, charge to harmonic electric capacity C, and by sphere gap G comparative example unit T
0apply rush of current, by K switch applying in the 100ms after rush of current, accurately control the duration being applied to power-frequency voltage on test product, L1 is the protection inductance in power-frequency voltage loop.The adoptable voltage divider V in loop measures power-frequency voltage, utilizes current transformer I to section of an arrester T
0current waveform and amplitude measure.The operating duty cycle test tolerance of real checking section of an arrester under various rush of current ripple, ensure that string mends the safe operation of device section of an arrester (MOV).
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also carry out suitable change and amendment to above-mentioned embodiment.Therefore, the utility model is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, although employ some specific terms in this instructions, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (6)
1. the test loop of a section of an arrester operating duty, comprise the section of an arrester trial target be connected in test loop, it is characterized in that, also comprise charge circuit, dash current loop, switch and power-frequency voltage loop, described charge circuit is connected with described dash current loop, described dash current loop is connected with described section of an arrester trial target, and described power-frequency voltage loop is connected with described section of an arrester trial target by described switch.
2. the test loop of section of an arrester operating duty according to claim 1, is characterized in that, described dash current loop comprises harmonic electric capacity and the harmonic inductance of series connection.
3. the test loop of section of an arrester operating duty according to claim 1, it is characterized in that, the one end in described dash current loop is connected with described section of an arrester trial target by a sphere gap, and the other end is connected with described section of an arrester trial target by a current transformer, between described power-frequency voltage loop and described section of an arrester trial target, be parallel with a voltage divider.
4. the test loop of section of an arrester operating duty according to claim 1, is characterized in that, described charge circuit is constant-current supply charge circuit.
5. the test loop of section of an arrester operating duty according to claim 1, is characterized in that, is connected with a protection inductance between described power-frequency voltage loop and described switch.
6. the test loop of section of an arrester operating duty according to claim 5, is characterized in that, is also connected with a pressure regulator between described power-frequency voltage loop and described protection inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520284541.1U CN204556781U (en) | 2015-05-05 | 2015-05-05 | The test loop of section of an arrester operating duty |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520284541.1U CN204556781U (en) | 2015-05-05 | 2015-05-05 | The test loop of section of an arrester operating duty |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204556781U true CN204556781U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520284541.1U Active CN204556781U (en) | 2015-05-05 | 2015-05-05 | The test loop of section of an arrester operating duty |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204556781U (en) |
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2015
- 2015-05-05 CN CN201520284541.1U patent/CN204556781U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210726 Address after: 510080 West Tower 13-20 Floor, Shui Jungang 6 and 8 Dongfeng East Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: China South Power Grid International Co.,Ltd. Patentee after: XI'AN XD ARRESTER Co.,Ltd. Address before: 510080 West Tower 13-20 Floor, Shui Jungang 6 and 8 Dongfeng East Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: China South Power Grid International Co.,Ltd. Patentee before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID Patentee before: XI'AN XD ARRESTER Co.,Ltd. |
|
| TR01 | Transfer of patent right |