CN203572859U - Novel high-voltage impact resistor voltage divider device - Google Patents
Novel high-voltage impact resistor voltage divider device Download PDFInfo
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- CN203572859U CN203572859U CN201320673144.4U CN201320673144U CN203572859U CN 203572859 U CN203572859 U CN 203572859U CN 201320673144 U CN201320673144 U CN 201320673144U CN 203572859 U CN203572859 U CN 203572859U
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
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Abstract
The utility model provides a novel high-voltage impact resistor voltage divider device. The device is composed of a high-voltage part and a low-voltage part; the high-voltage part is connected to the low-voltage part through a lower grading ring (15), the high-voltage part comprises a high-voltage connection terminal (10), a high-voltage wire (1), a high-voltage conduit (13), a high-voltage sleeve pipe (11), a damping resistor (2), a upper grading ring (14), a high-voltage arm resistor (3) and the lower grading ring (15); the lower end of the high-voltage conduit (13) is connected to the upper end of the damping resistor (2), the lower end of the damping resistor (2) is connected to the upper end of the upper grading ring (14), the lower end of the upper grading ring (14) is connected to the upper end of the high-voltage arm resistor (3), and the lower end of the high-voltage arm resistor (3) is connected to the upper end of the lower grading ring (15). The novel high-voltage impact resistor voltage divider device can carry out estimation on stray ground capacitances of a high-pressure wire, and eliminates the stray capacitances between a voltage divider and other equipment or voltage dividers.
Description
Technical field:
The utility model relates to a kind of voltage divider, specifically relates to a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device.
Background technology:
The operating impulse voltage that the surge voltage of the power equipment of withstand voltage test produces while being the simulation lightning impulse voltage that suffers of power system transmission line and folding disconnecting link.In this process of the test, often need to measure amplitude and the time parameter of surge voltage, the impulse voltage divider in measuring system is voltage conversion device, and high-voltage impact voltage signal is converted to can be for the low-voltage signal of double measurement measurement device.
Impulse voltage divider is divided into underdamping voltage divider and resitstance voltage divider, underdamping voltage divider is also the load capacitance of impulse voltage generator simultaneously, it is mainly used in measuring surge voltage more than 1MV, and still, due to the impact of coupling capacitance, its transient response performance and stability are all poor.Due to thermal capacitance quantitative limitation, resitstance voltage divider can only be measured the impact signal of low voltage, but it has superior transient response and long-term, short-term stability, in measurement unit, is mainly used as surge voltage canonical measure utensil.
Resitstance voltage divider mainly comprises high-voltage arm, web member, low-voltage arm and measurement cable.In measuring process, the principal element that affects resitstance voltage divider accuracy of measurement is high-voltage arm stray capacitance over the ground, and this stray capacitance makes the voltage skewness of resitstance voltage divider high-voltage arm resistance, makes waveform generation distortion in the process of voltage magnitude conversion.And stray capacitance is more accurately estimated over the ground, Electric Field Simulation can not accurately be simulated.
At present in the structure of ripe resitstance voltage divider, voltage divider fills transformer oil and improves edge flashing voltage to reduce the size of high-voltage arm, then the lifting of high-voltage arm being tried one's best, increase ground clearance and reduce high-voltage arm stray capacitance over the ground as far as possible, can reduce like this impact of stray capacitance over the ground as far as possible, then at high-voltage arm resistance two ends, add small-sized grading ring and carry out the compensated part impact of stray capacitance over the ground, but the accuracy of measurement of voltage divider generally can be subject to high-voltage conducting wires stray capacitance over the ground, stray capacitance between voltage divider, stray capacitances between voltage divider and other equipment etc. are all on impact.
Utility model content:
The utility model provides a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements, with overcome high-voltage conducting wires over the ground the impact of the accuracy of measurement on voltage divider such as stray capacitance between the stray capacitance between stray capacitance, voltage divider, voltage divider and other equipment further improve accuracy of measurement and the stability of Resistor Divider for Impulse Voltage Measurements.
The technical scheme that the utility model provides is: a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device, and its improvements are:
Described device is comprised of high-pressure section and low-pressure section; Described high-pressure section is connected with described low-pressure section by lower uniform pressure ring (15).
Described high-pressure section comprises high-voltage connection terminal (10), high-voltage conducting wires (1), high-pressure conduit (13), bushing (11), damping resistance (2), upper grading ring (14), high-voltage arm resistance (3) and lower uniform pressure ring (15).
The lower end of high-pressure conduit (13) is connected with damping resistance (2) upper end, the lower end of damping resistance (2) is connected with upper grading ring (14) upper end, upper grading ring (14) lower end is connected with the upper end of high-voltage arm resistance (3), and the lower end of high-voltage arm resistance (3) is connected with the upper end of lower uniform pressure ring (15).
Preferably, described low-pressure section comprises compensating inductance (4), low-voltage arm resistance (5), wavefront build-out resistor (7), metal can (12), cable splice (16), radio frequency coaxial-cable (8) and wave rear build-out resistor (9).
Preferably, the lower end of described lower uniform pressure ring (15) connects one end of wavefront build-out resistor (7) and one end of compensating inductance (4) simultaneously, the other end of compensating inductance (4) is connected with the upper end of low-voltage arm resistance (5), the lower end ground connection (6) of low-voltage arm resistance (5), the other end of wavefront build-out resistor (7) is connected with the cable splice (16) of radio frequency coaxial-cable (8), the crust ground connection (6) of radio frequency coaxial-cable (8), the end of radio frequency coaxial-cable (8) is connected with one end of wave rear build-out resistor (9), the other end of wave rear build-out resistor (9) connects the crust of radio frequency coaxial-cable (8).
Preferably, described damping resistance (2), described upper grading ring (14), described high-voltage arm resistance (3), described lower uniform pressure ring (15), described compensating inductance (4), described low-voltage arm resistance (5) and described wavefront build-out resistor (7) are all placed in described metal can (12); Described high-pressure conduit (13), described damping resistance (2) and described high-voltage arm resistance (3) are all positioned on the central shaft of described metal can (12), described metal can (12) ground connection (6).
Preferably, the outer surface cover of described high-pressure conduit (13) has bushing (11), described bushing (11) upper end is provided with high-voltage connection terminal (10), and described high-voltage conducting wires (1) connects high-pressure conduit (13) upper end and draws through the high-voltage connection terminal (10) of bushing (11) upper end.
Preferably, described high-pressure conduit (13) is copper pipe.
Preferably, described damping resistance (2), described high-voltage arm resistance (3), described wavefront build-out resistor (7) and described wave rear build-out resistor (9) all adopt identical card agate filament winding system to form, and resistive element adopts two-way coiling.
Preferably, described damping resistance (2) is vertical connection with the annexation of upper grading ring (14).
Preferably, described high-voltage arm resistance (3) is vertical connection with the annexation of upper grading ring (14), and described high-voltage arm resistance (3) is vertical connection with the annexation of lower uniform pressure ring (15).
Preferably, described lower uniform pressure ring (15) is vertical connection with the annexation between compensating inductance (4).
Preferably, the two ends of described wave rear build-out resistor (9) are connected with the two ends of the double measurement instruments such as digital recorder respectively.
Preferably, described low-voltage arm resistance (5) adopts 4 resistance of cage-shaped structure to compose in parallel.
Preferably, the right cylinder that described metal can (12) is hermetically-sealed construction, is filled with 3 times of atmospheric air or nitrogen in metal can (12).
With immediate technical scheme ratio, the beneficial effects of the utility model are:
1, high and low pressure arm is placed in 3 times of atmospheric air or nitrogen, increases edge flashing voltage, reduces the size of high-voltage arm, than transformer oil, reduces weight and is convenient to transportation.
2, height pressure arm is placed in to metal can, can eliminates voltage divider and other charging equipments, the coupling capacitance of voltage divider and wall, eliminates the impact of proximity effect, increases accuracy of measurement.
3, high-voltage arm is placed in to metal can, metal can ground connection, no matter make which kind of layout, under which kind of condition, the capacitance of stray electrical over the ground between high-voltage arm and metal can is constant, can carry out reasonable simulation calculation, because stray capacitance is fixed, available compensating inductance is compensated, and improves greatly transient response characteristic.
4, damping resistance is built-in, can damping high-voltage the vibration of lead-in wire and high-pressure conduit, and make voltage divider compacter, be convenient to wiring.
Accompanying drawing explanation:
Fig. 1 is the circuit theory diagrams of Novel high voltage Resistor Divider for Impulse Voltage Measurements in the utility model embodiment.
Fig. 2 is the overall schematic of Novel high voltage Resistor Divider for Impulse Voltage Measurements in the utility model embodiment.
Fig. 3 is Novel high voltage Resistor Divider for Impulse Voltage Measurements inner structure schematic diagram in the utility model embodiment.
Wherein: 1-high-voltage conducting wires, 2-damping resistance, 3-high-voltage arm resistance, 4-compensating inductance, 5-low-voltage arm resistance, 6-ground, 7-wavefront build-out resistor, 8-radio frequency coaxial-cable, 9-wave rear build-out resistor, 10-high-voltage connection terminal, 11-bushing, 12-metal can, 13-high-pressure conduit, the upper grading ring of 14-, 15-lower uniform pressure ring, 16-cable splice.
Embodiment:
In order to understand better the utility model, below in conjunction with specific embodiment, further illustrate content of the present invention.
The utility model provides a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device, and this device comprises high-pressure section and low-pressure section, and high-pressure section is connected with low-pressure section by lower uniform pressure ring (15).
High-pressure section comprises high-voltage connection terminal (10), high-voltage conducting wires (1), high-pressure conduit (13), bushing (11), damping resistance (2), upper grading ring (14), high-voltage arm resistance (3) and lower uniform pressure ring (15).
The outer surface cover of high-pressure conduit (13) has bushing (11), bushing (11) upper end is provided with high-voltage connection terminal (10), high-voltage conducting wires (1) connects high-pressure conduit (13) upper end and draws through the high-voltage connection terminal (10) of bushing (11) upper end, the lower end of high-pressure conduit (13) is connected with damping resistance (2) upper end, the lower end of damping resistance (2) is connected with upper grading ring (14) upper end, upper grading ring (14) lower end is connected with the upper end of high-voltage arm resistance (3), and the lower end of high-voltage arm resistance (3) is connected with the upper end of lower uniform pressure ring (15).
Damping resistance (2) is vertical connection with the annexation of upper grading ring (14).
High-voltage arm resistance (3) is vertical connection with the annexation of upper grading ring (14), and high-voltage arm resistance (3) is vertical connection with the annexation of lower uniform pressure ring (15).
Low-pressure section comprises compensating inductance (4), low-voltage arm resistance (5), wavefront build-out resistor (7), metal can (12), cable splice (16), radio frequency coaxial-cable (8) and wave rear build-out resistor (9).
The lower end of lower uniform pressure ring (15) connects one end of wavefront build-out resistor (7) and one end of compensating inductance (4) simultaneously, the other end of compensating inductance (4) is connected with the upper end of low-voltage arm resistance (5), the lower end ground connection (6) of low-voltage arm resistance (5), the other end of wavefront build-out resistor (7) is connected with the cable splice (16) of radio frequency coaxial-cable (8), the crust ground connection (6) of radio frequency coaxial-cable (8), the end of radio frequency coaxial-cable (8) is connected with one end of wave rear build-out resistor (9), the other end of wave rear build-out resistor (9) connects the crust of radio frequency coaxial-cable (8), the two ends of wave rear build-out resistor (9) are connected with the two ends of the double measurement instruments such as digital recorder respectively.
Lower uniform pressure ring (15) is vertical connection with the annexation between compensating inductance (4).
Damping resistance (2), upper grading ring (14), high-voltage arm resistance (3), lower uniform pressure ring (15), compensating inductance (4), low-voltage arm resistance (5) and wavefront build-out resistor (7) are all placed in metal can (12); High-pressure conduit (13), damping resistance (2) and high-voltage arm resistance (3) are all positioned on the central shaft of metal can (12), metal can (12) ground connection (6).
Metal can (12) is hermetically-sealed construction right cylinder, and metal can (12) inside is filled with 3 times of atmospheric air or nitrogen.
In order to increase electric conductivity, high-pressure conduit (13) adopts copper pipe; High voltage is added to (3) on high-voltage arm resistance by high-pressure conduit (13), and the outer surface cover of high-pressure conduit (13) has bushing (11), and bushing (11) outer wall is umbrella group structure, for preventing the metal can electric discharge of high-pressure conduit (13) to lower end.
In order to reduce the impact of temperature, damping resistance (2), high-voltage arm resistance (3), wavefront build-out resistor (7), wave rear build-out resistor (9) all adopt identical card agate filament winding system, and in order to reduce the stray inductance of resistance, resistive element adopts two-way coiling; Low-voltage arm resistance (5) adopts the formation of 4 resistance parallel connections of cage-shaped structure.
The size of damping resistance (2) is carried out the test of step ripple by voltage divider and is determined, after determining damping resistance (2) size, damping resistance (2) is connected in to high-pressure conduit (13) lower end, damping resistance (2) can damping high-voltage wire (1) and high-pressure conduit (13) on vibration, and can be convenient to wiring by compact devices.
Upper grading ring (14) and lower uniform pressure ring (15) are small-sized grading ring, and for compensating the stray capacitance of high-voltage arm resistance (3) to metal can (12), the large I of stray capacitance calculates by the method for Computer Simulation.
The magnitude of compensating inductance (4) determines by stray capacitance, and the value of compensating inductance (4) is tested and obtained by step response.
Metal can (12) inside that high-voltage arm resistance (3) is placed in 3 times of atmospheric airs or nitrogen can reduce the height of high-voltage arm resistance (3), can directly eliminate in addition the coupling capacitance of voltage divider and other equipment or between the walls, improves Measurement sensibility degree.
These are only embodiment of the present utility model, be not limited to the utility model, all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in the claim scope of the present utility model that application awaits the reply.
Claims (10)
1. a Novel high voltage Resistor Divider for Impulse Voltage Measurements device, is characterized in that:
Described device is comprised of high-pressure section and low-pressure section; Described high-pressure section is connected with described low-pressure section by lower uniform pressure ring (15);
Described high-pressure section comprises high-voltage connection terminal (10), high-voltage conducting wires (1), high-pressure conduit (13), bushing (11), damping resistance (2), upper grading ring (14), high-voltage arm resistance (3) and lower uniform pressure ring (15);
The lower end of high-pressure conduit (13) is connected with damping resistance (2) upper end, the lower end of damping resistance (2) is connected with upper grading ring (14) upper end, upper grading ring (14) lower end is connected with the upper end of high-voltage arm resistance (3), and the lower end of high-voltage arm resistance (3) is connected with the upper end of lower uniform pressure ring (15).
2. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 1, is characterized in that:
Described low-pressure section comprises compensating inductance (4), low-voltage arm resistance (5), wavefront build-out resistor (7), metal can (12), cable splice (16), radio frequency coaxial-cable (8) and wave rear build-out resistor (9);
The lower end of described lower uniform pressure ring (15) connects one end of wavefront build-out resistor (7) and one end of compensating inductance (4) simultaneously, the other end of compensating inductance (4) is connected with the upper end of low-voltage arm resistance (5), the lower end ground connection (6) of low-voltage arm resistance (5), the other end of wavefront build-out resistor (7) is connected with the cable splice (16) of radio frequency coaxial-cable (8), the crust ground connection (6) of radio frequency coaxial-cable (8), the end of radio frequency coaxial-cable (8) is connected with one end of wave rear build-out resistor (9), the other end of wave rear build-out resistor (9) connects the crust of radio frequency coaxial-cable (8).
3. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 2, is characterized in that:
Damping resistance (2), upper grading ring (14), high-voltage arm resistance (3), described lower uniform pressure ring (15), described compensating inductance (4), described low-voltage arm resistance (5) and described wavefront build-out resistor (7) are all placed in described metal can (12); High-pressure conduit (13), damping resistance (2) and high-voltage arm resistance (3) are all positioned on the central shaft of described metal can (12), described metal can (12) ground connection (6).
4. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 1, is characterized in that:
The outer surface cover of described high-pressure conduit (13) has bushing (11), described bushing (11) upper end is provided with high-voltage connection terminal (10), and described high-voltage conducting wires (1) connects high-pressure conduit (13) upper end and draws through the high-voltage connection terminal (10) of bushing (11) upper end.
5. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 1, is characterized in that:
Described high-pressure conduit (13) is copper pipe.
6. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 2, is characterized in that:
Damping resistance (2), high-voltage arm resistance (3), described wavefront build-out resistor (7) and described wave rear build-out resistor (9) all adopt identical card agate filament winding system to form, and resistive element adopts two-way coiling.
7. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 2, is characterized in that:
Damping resistance (2) is vertical connection with the annexation of upper grading ring (14);
High-voltage arm resistance (3) is vertical connection with the annexation of upper grading ring (14), and high-voltage arm resistance (3) is vertical connection with the annexation of lower uniform pressure ring (15);
Described lower uniform pressure ring (15) is vertical connection with the annexation between compensating inductance (4).
8. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 2, is characterized in that:
The two ends of described wave rear build-out resistor (9) are connected with the two ends of the double measurement instruments such as digital recorder respectively.
9. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 2, is characterized in that:
Described low-voltage arm resistance (5) adopts 4 resistance of cage-shaped structure to compose in parallel.
10. a kind of Novel high voltage Resistor Divider for Impulse Voltage Measurements device as claimed in claim 3, is characterized in that:
The right cylinder that described metal can (12) is hermetically-sealed construction, is filled with 3 times of atmospheric air or nitrogen in metal can (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320673144.4U CN203572859U (en) | 2013-10-29 | 2013-10-29 | Novel high-voltage impact resistor voltage divider device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320673144.4U CN203572859U (en) | 2013-10-29 | 2013-10-29 | Novel high-voltage impact resistor voltage divider device |
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| CN203572859U true CN203572859U (en) | 2014-04-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106291273A (en) * | 2016-07-26 | 2017-01-04 | 中国电力科学研究院 | All pressures radome device of ± 2400kV DC voltage generator and corona free test method |
| CN106353577A (en) * | 2016-08-19 | 2017-01-25 | 中国电力科学研究院 | System and method for measuring direct voltage based on wireless transmission |
| CN106405186A (en) * | 2015-07-31 | 2017-02-15 | 中国电力科学研究院 | Dual-purpose voltage divider based on standard capacitor |
| CN106872751A (en) * | 2015-12-11 | 2017-06-20 | 国网智能电网研究院 | A kind of equivalent-circuit model of equal potential shielded capacitor voltage transformer |
| CN108627786A (en) * | 2017-03-22 | 2018-10-09 | 中国电力科学研究院 | Different voltages waveform subscript quasi-electric field generating means and electric field measuring apparatus calibrating installation |
| CN109406851A (en) * | 2018-12-13 | 2019-03-01 | 西安交通大学 | A kind of coaxial type resistance divider and its high frequency response compensation method |
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2013
- 2013-10-29 CN CN201320673144.4U patent/CN203572859U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106405186A (en) * | 2015-07-31 | 2017-02-15 | 中国电力科学研究院 | Dual-purpose voltage divider based on standard capacitor |
| CN106872751A (en) * | 2015-12-11 | 2017-06-20 | 国网智能电网研究院 | A kind of equivalent-circuit model of equal potential shielded capacitor voltage transformer |
| CN106872751B (en) * | 2015-12-11 | 2020-11-03 | 国网智能电网研究院 | Equivalent circuit model of equipotential shielding capacitor voltage transformer |
| CN106291273A (en) * | 2016-07-26 | 2017-01-04 | 中国电力科学研究院 | All pressures radome device of ± 2400kV DC voltage generator and corona free test method |
| CN106353577A (en) * | 2016-08-19 | 2017-01-25 | 中国电力科学研究院 | System and method for measuring direct voltage based on wireless transmission |
| CN106353577B (en) * | 2016-08-19 | 2020-04-17 | 中国电力科学研究院 | Direct-current voltage measuring system and method based on wireless transmission |
| CN108627786A (en) * | 2017-03-22 | 2018-10-09 | 中国电力科学研究院 | Different voltages waveform subscript quasi-electric field generating means and electric field measuring apparatus calibrating installation |
| CN108627786B (en) * | 2017-03-22 | 2020-10-09 | 中国电力科学研究院 | Electric field measuring instrument calibrating device |
| CN109406851A (en) * | 2018-12-13 | 2019-03-01 | 西安交通大学 | A kind of coaxial type resistance divider and its high frequency response compensation method |
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Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE ELECTRIC P Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20150504 |
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Effective date of registration: 20150504 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Patentee after: JIANGSU ELECTRIC POWER COMPANY Research Institute Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: China Electric Power Research Institute |
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