CN204116530U - Voltage test device for generating standard lightning impulse in high-altitude area - Google Patents
Voltage test device for generating standard lightning impulse in high-altitude area Download PDFInfo
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- CN204116530U CN204116530U CN201420335987.8U CN201420335987U CN204116530U CN 204116530 U CN204116530 U CN 204116530U CN 201420335987 U CN201420335987 U CN 201420335987U CN 204116530 U CN204116530 U CN 204116530U
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Abstract
The utility model relates to a high altitude area produces voltage test device of standard lightning impulse. The device comprises a charging power supply, a charging capacitor, a synchronous spherical gap, a wave tail resistor, a wave head resistor, a built-in compensator, a loop inductor, a voltage divider and a load; the charging capacitor is connected to two ends of a charging power supply, one end of the synchronous spherical gap is connected with one end of the charging capacitor, the other end of the synchronous spherical gap is connected with one end of the wave tail resistor and one end of the wave head resistor, the other end of the wave tail resistor is connected with the other end of the charging capacitor and grounded, the other end of the wave head resistor is connected with the input end of the built-in compensator, the output end of the built-in compensator is connected with one end of the loop inductor, the other end of the loop inductor is connected with one end of the voltage divider and one end of the load, and the voltage divider and the other end of the load are grounded. The utility model discloses can output standard lightning impulse wave, satisfy 2000m high altitude area and develop the experimental needs of special high tension transmission standard lightning impulse.
Description
Technical field
The utility model belongs to the impulse voltage generator experimental technique of high-voltage engineering technology category, and particularly the device of a kind of High aititude multistage impulse voltage generator outputting standard lightning surge, belongs to the renovation technique of high altitude localities impulse voltage test device.
Background technology
National standard (GB/T 16927.1) and IEC standard (IEC 60060-1) the wave head time requirement to standard lightning voltage ripple are 1.2 μ s ± 30%; Standard lightning wave wave head vibration overshoot value is restricted to 5%.High parameter impulse voltage generator rated voltage is higher, and loop progression is more, and loop dimension is comparatively large, and impulse test loop inductance is larger.The difficulty of the standard thunder and lightning waveform of the impulse voltage generator output wave head time 1.2 μ s of high parameter is larger.From the actual tests result of current domestic high parameter impulse voltage generator, the lightning wave wave head time that wave head concussion is less than 5% is greater than 2 μ s.
When carrying out lightning impulse test, in order to obtain the very short wave head time, need the resistance reducing wave front resistance.And the inductance in impulse test loop, wave front resistance and load in series constitute RLC oscillation circuit, wave front resistance also serves the effect of damping resistance.When wave front resistance is reduced to critical damping resistance value, generation is vibrated by loop.For high parameter impulse test system, be there is larger natural inductance and stray inductance, and due to generator height very high, loop is very large, and therefore stray capacitance is also larger, and namely load capacitance is relatively large.Obtaining the standard lightning impulse head time (1.2 μ s ± 30%) then needs less wave front resistance value, but because loop inductance is very large, loop is easy to produce overshoot, and the impulse voltage generator therefore for high parameter wants outputting standard lightning surge to be almost impossible.The art of this patent cannot the technical barrier of outputting standard lightning surge by solving high parameter impulse voltage test device, meets 2000m high altitude localities and carries out UHV transmission standard lightning impulse test needs.
Summary of the invention
The purpose of this utility model is consider the problems referred to above and provide a kind of high altitude localities to produce the voltage test device of standard lightning impulse, the utility model can outputting standard lightning surge, meets 2000m high altitude localities and carries out UHV transmission standard lightning impulse test needs.
The technical solution of the utility model is: high altitude localities of the present utility model produces the voltage test device of standard lightning impulse, includes charge power supply, charging capacitor, synchronous ball gap, wave terminal resistance, wave front resistance, built-in compensator, loop inductance, voltage divider and load; Wherein charging capacitor is connected to the two ends of charge power supply, one end of synchronous ball gap is connected with one end of charging capacitor, the other end of synchronous ball gap is connected with one end of wave terminal resistance and is connected with one end of wave front resistance, the other end of wave terminal resistance is connected with the other end of charging capacitor, and ground connection, the other end of wave front resistance is connected with the input end of built-in compensator, the output terminal of built-in compensator is connected with one end of loop inductance, the other end of loop inductance is connected with one end of voltage divider and is connected with one end of load, the other end ground connection of voltage divider and load.
The utility model adopts charge power supply to charge to charging capacitor, and the charging capacitor of charging complete is by the structure of synchronous ball gap to the loop electric discharge of wave terminal resistance, wave front resistance, built-in compensator, loop inductance and load composition.The utility model can export the standard lightning impulse voltage waveform in wave head time 1.2 μ s ± 30% scope, the voltage that the utility model exports meets the requirement of GB to standard lightning impulse, solving high parameter impulse voltage test device cannot the technical barrier of outputting standard lightning surge, and is applicable to 2000m high altitude condition.The utility model is that a kind of design is ingenious, and function admirable, convenient and practical high altitude localities produces the voltage test device of standard lightning impulse.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model embodiment;
Fig. 2 is the standard lightning impulse voltage oscillogram that the utility model embodiment exports.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Schematic diagram of the present utility model as shown in Figure 1, embodiment illustrated in fig. 1 is the voltage test device producing standard lightning impulse 7200kV in 2000m high altitude localities, high altitude localities of the present utility model produces the voltage test device of standard lightning impulse, includes charge power supply 1, charging capacitor 2, synchronous ball gap 3, wave terminal resistance 4, wave front resistance 5, built-in compensator 6, loop inductance 7, voltage divider 8 and load 9, wherein charging capacitor 2 is connected to the two ends of charge power supply 1, one end of synchronous ball gap 3 is connected with one end of charging capacitor 2, the other end of synchronous ball gap 3 is connected with one end of wave terminal resistance 4 and is connected with one end of wave front resistance 5, the other end of wave terminal resistance 4 is connected with the other end of charging capacitor 2, and ground connection, the other end of wave front resistance 5 is connected with the input end of built-in compensator 6, the output terminal of built-in compensator 6 is connected with one end of loop inductance 7, the other end of loop inductance 7 is connected with one end of voltage divider 8 and is connected with one end of load 9, the other end ground connection of voltage divider 8 and load 9.
In the present embodiment, above-mentioned voltage divider 8 is the RC divider of three rod structures.
In the present embodiment, said apparatus body unit progression is 36 grades; Step voltage is 200kV DC voltage; Inter-stage insulation distance is at least 700mm, height above sea level 2000m.
In the present embodiment, above-mentioned built-in compensator 6 is a RLC impedor in the loop of wave front resistance 5, loop inductance 7 and load 9 again in series connection, and specific practice is a compensation condenser in parallel on wave front resistance 5.
In the present embodiment, said apparatus is a respective compensation condenser in parallel on the wave front resistance of its body lower part 10 grades, by regulating progression in parallel and the resistance of wave front resistance, to reach the object of outputting standard lightning impulse voltage waveform.
In embodiment illustrated in fig. 1, the DC voltage value of charge power supply 1 is 30kV, and the capacitance of charging capacitor 2 is 28nF, the resistance value of wave terminal resistance 4 is 70 Ω 3.5k Ω in parallel again, the resistance value of wave front resistance 5 is 15 Ω, and the inductance value of loop inductance 7 is about 215 μ H, and load 9 is clearance.When not applying built-in compensator 6, the lightning surge that impulse voltage generator exports, the wave head time is greater than 2 μ s, and wave head concussion is also greater than 5%.For reaching the object of outputting standard lightning impulse voltage waveform, after being applied with built-in compensator 6, specific practice is a respective compensation condenser in parallel on the wave front resistance of 10 grades, impulse voltage generator bottom, and the progression of adjustment parallel connection and the resistance of level wave front resistance.The result of debugging is, in 10 grades, device body bottom, 2 grades of ripples are 70 Ω wave front resistances 30nF capacitors in parallel, and 8 grades is 15 Ω wave front resistances 30nF capacitors in parallel.
In the present embodiment, principle of work of the present utility model is: charge power supply 1 pair of charging capacitor 2 charges, the charging capacitor 2 of charging complete passes through synchronous ball gap 3 to wave terminal resistance 4, wave front resistance 5, built-in compensator 6, the loop electric discharge that loop inductance 7 and load 9 form, export standard lightning impulse voltage waveform as shown in Figure 2, its wave head time 1.32 μ s, wave head concussion 2.6%, voltage magnitude 891kV, voltage output efficiency more than 90%, this output voltage meets the requirement of GB to standard lightning impulse, solving high parameter impulse voltage test device cannot the technical barrier of outputting standard lightning surge, and be applicable to 2000m high altitude localities.
Claims (4)
1. high altitude localities produces a voltage test device for standard lightning impulse, it is characterized in that including charge power supply, charging capacitor, synchronous ball gap, wave terminal resistance, wave front resistance, built-in compensator, loop inductance, voltage divider and load; Wherein charging capacitor is connected to the two ends of charge power supply, one end of synchronous ball gap is connected with one end of charging capacitor, the other end of synchronous ball gap is connected with one end of wave terminal resistance and is connected with one end of wave front resistance, the other end of wave terminal resistance is connected with the other end of charging capacitor, and ground connection, the other end of wave front resistance is connected with the input end of built-in compensator, the output terminal of built-in compensator is connected with one end of loop inductance, the other end of loop inductance is connected with one end of voltage divider and is connected with one end of load, the other end ground connection of voltage divider and load.
2. high altitude localities according to claim 1 produces the voltage test device of standard lightning impulse, it is characterized in that above-mentioned voltage divider is the RC divider of three rod structures.
3. high altitude localities according to claim 1 and 2 produces the voltage test device of standard lightning impulse, it is characterized in that device body unit progression is 36 grades; Step voltage is 200kV DC voltage; Inter-stage insulation distance is at least 700mm.
4. high altitude localities according to claim 3 produces the voltage test device of standard lightning impulse, it is characterized in that above-mentioned built-in compensator is a RLC impedor in the loop of wave front resistance, loop inductance and load again in series connection, is namely a compensation condenser in parallel on level wave front resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420335987.8U CN204116530U (en) | 2014-06-23 | 2014-06-23 | Voltage test device for generating standard lightning impulse in high-altitude area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420335987.8U CN204116530U (en) | 2014-06-23 | 2014-06-23 | Voltage test device for generating standard lightning impulse in high-altitude area |
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| CN204116530U true CN204116530U (en) | 2015-01-21 |
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| CN201420335987.8U Expired - Lifetime CN204116530U (en) | 2014-06-23 | 2014-06-23 | Voltage test device for generating standard lightning impulse in high-altitude area |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645836A (en) * | 2017-03-07 | 2017-05-10 | 云南电网有限责任公司电力科学研究院 | Parameter adjustable impulse voltage generation device |
| CN106707127A (en) * | 2017-03-10 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Industrial frequency impact synthesis test loop for testing thyristor level reverse restoration characteristics |
| CN107505553A (en) * | 2017-08-29 | 2017-12-22 | 国网湖南省电力公司 | A kind of power frequency continued flow experimental rig and its application method |
| CN107576828A (en) * | 2017-10-16 | 2018-01-12 | 云南电网有限责任公司电力科学研究院 | Impulse voltage generator Multi- Switch synchronous triggering device and method |
| CN108983049A (en) * | 2018-06-14 | 2018-12-11 | 国网浙江省电力有限公司舟山供电公司 | Bulky capacitor direct current cables lightning impulse voltage test waveform overshoot suppressing method |
-
2014
- 2014-06-23 CN CN201420335987.8U patent/CN204116530U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106645836A (en) * | 2017-03-07 | 2017-05-10 | 云南电网有限责任公司电力科学研究院 | Parameter adjustable impulse voltage generation device |
| CN106707127A (en) * | 2017-03-10 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Industrial frequency impact synthesis test loop for testing thyristor level reverse restoration characteristics |
| CN107505553A (en) * | 2017-08-29 | 2017-12-22 | 国网湖南省电力公司 | A kind of power frequency continued flow experimental rig and its application method |
| CN107576828A (en) * | 2017-10-16 | 2018-01-12 | 云南电网有限责任公司电力科学研究院 | Impulse voltage generator Multi- Switch synchronous triggering device and method |
| CN107576828B (en) * | 2017-10-16 | 2023-10-27 | 云南电网有限责任公司电力科学研究院 | Multi-switch synchronous triggering device and method for impulse voltage generator |
| CN108983049A (en) * | 2018-06-14 | 2018-12-11 | 国网浙江省电力有限公司舟山供电公司 | Bulky capacitor direct current cables lightning impulse voltage test waveform overshoot suppressing method |
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