CN101520471B - Novel DC pulsed attenuator - Google Patents
Novel DC pulsed attenuator Download PDFInfo
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- CN101520471B CN101520471B CN2009101164578A CN200910116457A CN101520471B CN 101520471 B CN101520471 B CN 101520471B CN 2009101164578 A CN2009101164578 A CN 2009101164578A CN 200910116457 A CN200910116457 A CN 200910116457A CN 101520471 B CN101520471 B CN 101520471B
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- arm resistance
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Abstract
The invention relates to a novel DC pulsed attenuator comprising a cylinder body; two ends of the cylinder body are respectively provided with a metal connecting column and a high-voltage arm resistorwhich are connected in series; the cylinder body is externally provided with a metal box in which a capacitor is arranged; and equalizing rings are installed at two ends of the high-voltage arm resis tor. The invention is simple in structure, lower in cost and easy to realize, adopts the equalizing rings to improve the electric filed distribution near high-voltage arms of the attenuator, and avoids the corona phenomenon. The largest strength of electric fields between the equalizing rings is less than the breakdown field strength of media filled in the attenuator. A low-voltage arm resistor connected to the inside of the metal box is connected in parallel with the capacitor, thereby influences to the intrinsic standoff ratio and the phase angle of the attenuator are effectively compensateddue to the capacitor distributed between the equalizing rings.
Description
Technical field
The present invention relates to the sub-field of high-tension measurement, especially a kind of Novel DC, pulse analyser.
Background technology
The voltage divider that existing market is existing, can be divided into two kinds of direct current and impulse types, the divider response frequency is less than 50Hz (square wave), and the pulse analyser response time reaches nanosecond even subnanosecond, but need measure the voltage divider of pulse again for measuring direct current now, still blank in the market.And present quick response voltage divider all directly adopts the resistance capacitance connection in series-parallel to realize that volume is big, the price height.
Summary of the invention
The purpose of this invention is to provide a kind of Novel DC, pulse analyser, can't satisfy the problem of the double requirements of direct current measurement and impulsive measurement with the voltage divider that solves existing market simultaneously.
In order to achieve the above object, the technical solution adopted in the present invention is:
Novel DC, pulse analyser is characterized in that: include the cylindrical shell of insulation, an end is fixed with the metal joint pin in the described cylindrical shell, is filled with insulating medium in the cylindrical shell; Described cylindrical shell is placed on the metab of a reliable ground; The other end is fixed with high-voltage arm resistance in the cylindrical shell, and described high-voltage arm resistance and described metal joint pin interconnect, and described high-voltage arm resistance outer end is with insulation sleeve or scribbles insullac; The two ends that described high-voltage arm resistance is positioned at described inner barrel branch are with grading ring respectively; Two connection terminals are installed on the described cylindrical shell, and the outer end of the outer end of described high-voltage arm resistance and described metal joint pin is connected to respectively on two connection terminals; Described cylindrical shell also is provided with can outward, be provided with electric capacity in the described can, two leads that described electric capacity two ends connect are drawn from can, wherein one is connected on the connection terminal that is electrically connected with high-voltage arm resistance, another root lead ground connection, described electric capacity two ends also lead to lead and are used for and low-voltage arm resistance and tie.
Described Novel DC, pulse analyser is characterized in that: described high-voltage arm resistance is connected by two resistance, and an end face of described each resistance has threaded hole, and being screwed together by metal screw between two resistance forms; One of them grading ring is enclosed within the junction of described high-voltage arm resistance and described metal joint pin.
Described Novel DC, pulse analyser is characterized in that: described grading ring structure is two semi-loops, after described grading ring two semi-rings are enclosed within on the high-voltage arm resistance respectively, passes through bolt between two semi-ring
The present invention adopts the noninductive resistance material to make high-voltage arm resistance.Its distribution of resistance inductance is little, and temperature coefficient is good, and when the direct current stable state, resistance is constant, and the measure linear degree is good under each electric pressure.At the high-voltage arm resistance two ends 110kV grading ring of respectively connecting up and down, low-voltage arm shunt compensation electric capacity utilizes distributed capacitance between grading ring to replace the physics electric capacity of traditional RC divider parallel connection.The voltage divider response speed is fast, and dynamic property is good.
The present invention is simple in structure, and cost is lower, is easy to realize, adopts grading ring to improve near the Electric Field Distribution of voltage divider high-voltage arm, has avoided the corona phenomenon generation.The electric field intensity maximum is less than the breakdown field strength of filled media in the voltage divider tube between the grading ring that is adopted.The low-voltage arm resistance that connects in the can electric capacity that is connected in parallel has effectively compensated because the influence that distributed capacitance causes voltage divider intrinsic standoff ratio and phase angle between grading ring.
Description of drawings
Fig. 1 is a structural drawing of the present invention.
Fig. 2 is circuit theory diagrams of the present invention.
Fig. 3 is the voltage divider experimental circuit.
Embodiment
As shown in Figure 1.Novel DC, pulse analyser, include cylindrical shell 1, an end is fixed with metal joint pin 2 in the described cylindrical shell 1, and cylindrical shell 1 other end is fixed with high-voltage arm resistance R 1, described high-voltage arm resistance R 1 interconnects with metal joint pin 2, and high-voltage arm resistance R 1 outer end is with insulation sleeve; The two ends that described high-voltage arm resistance R 1 is positioned at cylindrical shell 1 part are with grading ring 3 respectively; Two connection terminals 4 are installed on the described cylindrical shell 1, and the outer end of the outer end of described high-voltage arm resistance R 1 and metal joint pin 2 is connected to respectively on two connection terminals 4; The described cylindrical shell 1 outer can 5 that also is provided with, be provided with capacitor C 2 in the described can 5, two leads that described capacitor C 2 two ends connect are drawn from can, wherein one is connected on the connection terminal 4 that is electrically connected with high-voltage arm resistance, another root lead ground connection, described capacitor C 2 two ends also lead to lead and are used for and low-voltage arm resistance R2 and tie.High-voltage arm resistance R 1 is connected by two resistance, and an end face of described each resistance has threaded hole, is formed by connecting by metal screw between two resistance; One of them grading ring is enclosed within the junction of described high-voltage arm resistance and described metal joint pin.
Fig. 2 is the bleeder circuit schematic diagram, the high-voltage arm resistance R
1Distributed capacitance equivalence C between the grading ring of two ends
1This distributed capacitance has a strong impact on the voltage divider dynamic property.If at low-voltage arm resistance R
2Two ends centralized compensation capacitor C in parallel
2, just can remedy fully because the influence that the grading ring distributed capacitance causes voltage divider.But measurements and calculations distributed capacitance C how
1It is a quite problem of difficulty.
The method that the design adopts software emulation and experiment measuring to combine: software emulation, adopt ansys10.0 that voltage divider arrangement is carried out modeling, the distributed capacitance C that utilizes the C-Matrix order to calculate
1≈ 2.8pF, experimental test, the building-out capacitor C of employing
2=33nF.Can know distributed capacitance value C through calculating
1≤ 3.3pF, the result of test findings and software emulation is consistent.
Test used instrument TekP6015A high pressure oscilloscope probe, intrinsic standoff ratio 1000: l, Agilent oscillograph, the resistance type voltage divider of independent development are arranged.
In the sinusoidal wave experimental circuit, as shown in Figure 3, Agilent oscillograph two-way leads to and connects tek high-voltage probe and voltage divider output respectively.Switch A is a charge switch, and switch B is a discharge switch.Regulate inductance L passable to the sinusoidal excitation ripple of frequency in 1k～30kHz conversion.Adopt TekP6015A high pressure oscilloscope probe as standard voltage divider in the experiment, tested voltage divider and its relatively carry out verification.Correct compensation (C
2=33nF) as shown in Figure 3.Waveform corner burr is a undesired signal.
Carry out under pulse and direct current steady state test the high-voltage power supply of employing PSM topological structure 50kV/100A for development voluntarily.Survey instrument is the same with sinusoidal wave test.
Claims (3)
1. Novel DC, pulse analyser is characterized in that: include the cylindrical shell of insulation, an end is fixed with the metal joint pin in the described cylindrical shell, is filled with insulating medium in the cylindrical shell, and described cylindrical shell is placed on the metab of a reliable ground; The other end is fixed with high-voltage arm resistance in the cylindrical shell, and described high-voltage arm resistance and described metal joint pin interconnect, and described high-voltage arm resistance outer end is with insulation sleeve or scribbles insullac; The two ends that described high-voltage arm resistance is positioned at described inner barrel branch are with grading ring respectively; Two connection terminals are installed on the described cylindrical shell, and the outer end of the outer end of described high-voltage arm resistance and described metal joint pin is connected to respectively on two connection terminals; Described cylindrical shell also is provided with can outward, be provided with electric capacity in the described can, two leads that described electric capacity two ends connect are drawn from can, wherein one is connected on the connection terminal that is electrically connected with high-voltage arm resistance, another root lead ground connection, described electric capacity two ends also lead to lead and are used for and low-voltage arm resistance and tie.
2. Novel DC according to claim 1, pulse analyser is characterized in that: described high-voltage arm resistance is connected by two resistance, and an end face of each resistance has threaded hole, and being screwed together by metal screw between two resistance forms; One of them grading ring is enclosed within the junction of described high-voltage arm resistance and described metal joint pin.
3. Novel DC according to claim 1, pulse analyser is characterized in that: described grading ring structure is two semi-loops, after described grading ring two semi-rings are enclosed within on the high-voltage arm resistance respectively, passes through bolt between two semi-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101164578A CN101520471B (en) | 2009-03-30 | 2009-03-30 | Novel DC pulsed attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101164578A CN101520471B (en) | 2009-03-30 | 2009-03-30 | Novel DC pulsed attenuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101520471A CN101520471A (en) | 2009-09-02 |
| CN101520471B true CN101520471B (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101164578A Expired - Fee Related CN101520471B (en) | 2009-03-30 | 2009-03-30 | Novel DC pulsed attenuator |
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| CN (1) | CN101520471B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197110B (en) * | 2013-03-20 | 2015-11-04 | 陈志强 | A kind of half flexible high-power entity resitstance voltage divider |
| CN104237593A (en) * | 2014-09-26 | 2014-12-24 | 国家电网公司 | Voltage divider, voltage division circuit thereof and voltage division control method |
| CN104614566A (en) * | 2015-01-28 | 2015-05-13 | 中国计量科学研究院 | Voltage proportioner and self-checking device and method of phase angle error |
| CN107064601A (en) * | 2017-03-20 | 2017-08-18 | 杭州零尔电力科技有限公司 | A kind of electronic type voltage transformer |
| CN108802461B (en) * | 2017-04-28 | 2020-12-18 | 南京理工大学 | High-voltage divider device for testing direct current and transient process |
| DE102017114714A1 (en) * | 2017-06-30 | 2019-01-03 | Webasto SE | Arrangement for switching a resistor |
| CN112730941B (en) * | 2019-10-14 | 2022-05-27 | 南澳电气(武汉)有限公司 | 5400kV high-precision pure-resistance lightning impulse resistance voltage divider |
| CN111693755A (en) * | 2020-05-21 | 2020-09-22 | 西安交通大学 | Voltage detection circuit for high-voltage SiC MOSFET |
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2009
- 2009-03-30 CN CN2009101164578A patent/CN101520471B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101520471A (en) | 2009-09-02 |
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Granted publication date: 20110518 Termination date: 20170330 |