CN103630809A - Pulse discharge loop - Google Patents
Pulse discharge loop Download PDFInfo
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- CN103630809A CN103630809A CN201310574872.4A CN201310574872A CN103630809A CN 103630809 A CN103630809 A CN 103630809A CN 201310574872 A CN201310574872 A CN 201310574872A CN 103630809 A CN103630809 A CN 103630809A
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Abstract
The invention discloses a pulse discharge loop. The pulse discharge loop comprises a pulse power supply (1), a discharge electrode, a current-limiting resistor (4) and a measurement unit, wherein the high-voltage output end of the pulse power supply (1) is connected with the high-voltage electrode (2) of the discharge electrode; the low-voltage electrode (3) of the discharge electrode is connected with one end of the current-limiting resistor (4); the other end of the current-limiting resistor (4) is connected with the grounding end of the pulse power supply and is grounded; the output voltage of the pulse power supply is measured on the high-voltage side of the discharge electrode by adopting a high-voltage probe; the current of a pulse loop is measured between the current-limiting resistor and a grounding wire through a Rogowski coil. By the pulse discharge loop, single and frequency-repeated milliampere nanosecond discharge pulse can be generated; the amplitude value of the discharge pulse is controlled by the current-limiting resistor, so that the pulse can be used in corona discharge simulation places in different forms.
Description
Technical field
The present invention relates to pulsed discharge field, particularly can produce the loop of single and repetition frequency milliampere level nanosecond pulse discharge.
Background technology
The corona discharge on transmission line wire surface can produce stronger radio interference and audible noise, and electromagnetic environment is around exerted an influence.Both at home and abroad the research of transmission line of electricity audible noise is mainly concentrated on in-site measurement and predictor formula at present, and the mechanism of production of transmission line of electricity audible noise is not carried out to deep research.Corona discharge is comprised of a series of single discharge pulses, and the repetition rate of discharge pulse is very high, and the characteristic of impulse discharge pulse has certain randomness.The corona discharge signal obtaining under alternating current-direct current corona test platform has certain randomness, and the characteristics such as the repetition rate of discharge pulse, the amplitude of single discharge pulse, rising edge and pulsewidth are uncontrollable, and these parameters often change simultaneously simultaneously.Therefore, under alternating current-direct current corona test platform, be difficult to the associate feature between the single discharge parameter of research and sound characteristics, cannot determine that corona discharge parameter produces the rule that affects of audible noise to it.
Document 1 (SF6 gas discharge characteristic under nanosecond pulse. High-Voltage Technology, 38 (7), 2012, Ran Huijuan, Wang Jue, Wang Tao, Yan Ping .) discharge loop that proposes is by load salt solution resistance adjustment electric power output voltage, amplitude 0-200kV, discharging gap, current-limiting resistance and shunt are to be full of in the experiment cavity of SF6 gas, it is tens to hundreds of order of amps that the connection in power supply and experiment chamber adopts coaxial cavity, the electric current of this discharge loop.Above-mentioned discharge loop complex structure, electric current are larger, can not simulate a milliampere corona discharge current for level, and meanwhile, the design of discharge cavity is not easy to carry out the measurement of discharge generation acoustical signal.
Summary of the invention
The object of the invention is to overcome the difficulty that prior art is brought the mechanism of production research of audible noise due to randomness and the uncontrollability of corona discharge, propose a kind of pulsed discharge loop.This pulsed discharge loop can produce the milliampere level nanosecond pulse discharge of single and repetition frequency, and electric discharge amplitude and repetition frequency can be controlled flexibly by loop parameter, can simulate the corona discharge of different parameters, have realized the controllability of corona discharge parameter.
The present invention includes four ingredients: the pulse power, sparking electrode, current-limiting resistance and measuring unit.The high-voltage output end of the pulse power is connected with the high-pressure side of sparking electrode, and the low pressure end of sparking electrode is connected with one end of current-limiting resistance, and the other end of current-limiting resistance is connected with the earth terminal of the pulse power and ground connection.Measuring unit comprises voltage measurement unit and current measuring unit, voltage measurement unit adopts high-voltage probe to measure in high-field electrode side, high-voltage probe is connected with sparking electrode high-pressure side, current measuring unit is measured between current-limiting resistance and ground wire by Luo-coil, connects the insulated conductor of current-limiting resistance and ground connection through the center hole of Luo-coil.
The pulse power is output pulse amplitude and the continuously adjustable nanosecond pulse power supply of repetition frequency.The high-voltage output end of the pulse power adopts cable output.Sparking electrode comprises high-field electrode, low-field electrode, Metallic rod, insulating support and gib screw.High-field electrode and low-field electrode and Metallic rod adopt copper or stainless steel to make, and insulating support adopts insulating material to make.High-field electrode and low-field electrode, with inner hole thread, are connected with the one end with externally threaded Metallic rod by internal thread, and the other end of Metallic rod has inner bolt hole, can be connected with other devices; Two Metallic rod are fixed on the both sides of insulating support, by the first Metallic rod being connected with high-field electrode, regulate electrode separation, by gib screw, the first Metallic rod of adjusting electrode separation are fixed on insulating support.Described high-field electrode and low-field electrode are sharp electrode or plate electrode, and wherein high-field electrode adopts sharp electrode form, and low-field electrode is plate electrode form, or high-field electrode and low-field electrode all adopt sharp electrode form.Described current-limiting resistance is high-frequency and high-voltage noninductive resistance, and resistance is megohm magnitude; Current-limiting resistance two ends, with inner bolt hole, can be connected with other devices.The high-voltage output end of the pulse power is connected with high-field electrode, one end of low-field electrode and current-limiting resistance is connected, the other end of current-limiting resistance is connected with the earth terminal of the pulse power and ground connection, high-field electrode and low-field electrode positioned opposite, and both longitudinal axis are totally one horizontal line.Measuring unit comprises voltage measurement unit and current measuring unit; Voltage measurement unit adopts high-voltage probe to measure in high-field electrode side, and current measuring unit is measured electric current by Luo-coil between current-limiting resistance and ground wire.Connecting line in pulse circuit all adopts the high-voltage conducting wires with insulation sheath, and line is as far as possible short.
The high-voltage pulse of gating pulse power supply output punctures discharging gap, by the breakdown current of current-limiting resistance control loop, can obtain a milliampere nanosecond pulse discharge electric current for level; The repetition frequency of discharge pulse is passed through pulse power source control.Domain waveform while utilizing microphone measurement clearance to puncture the audible noise of generation, can study different discharge parameters and produce the associate feature of acoustical signal.
Good effect of the present invention is: can utilize the discharge pulse parameter of the flexible change in pulsed discharge loop and control loop, and the corona discharge of simulation different parameters, theory and experiment basis are established in the mechanism research that produces audible noise for corona discharge.
Accompanying drawing explanation
Fig. 1 is a kind of pulsed discharge of the present invention loop schematic diagram;
Fig. 2 is the structural representation of sparking electrode in pulsed discharge loop.
In figure: 1 pulse power, 2 high-field electrodes, 3 low-field electrodes, 4 current-limiting resistances, 5 voltage measurement units, 6 current measuring units, 7 Metallic rod that are connected with high-field electrode, 8 Metallic rod that are connected with low-field electrode, 9 insulating supports, 10 gib screws.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
As shown in Figure 1, the present invention includes the pulse power 1, sparking electrode, current-limiting resistance 4, measuring unit 5 and 6.The high-voltage output end of the pulse power 1 is connected with the high-pressure side of sparking electrode 2, the low pressure end 3 of sparking electrode is connected with one end of current-limiting resistance 4, the other end of current-limiting resistance 4 is connected with the earth terminal of the pulse power 1 and ground connection, voltage measurement unit 5 adopts high-voltage probe in sparking electrode high-pressure side measuring voltage, and current measuring unit 7 is measured electric current by Luo-coil between current-limiting resistance and ground wire.The pulse power 1 is output pulse amplitude and the continuously adjustable nanosecond pulse power supply of repetition frequency, and the high-voltage output end of the pulse power adopts cable output.
The composition structure of sparking electrode as shown in Figure 2.Sparking electrode comprises high-field electrode 2, low-field electrode 3, Metallic rod 7 and 8, insulating support 9, gib screw 10.Sparking electrode and Metallic rod adopt copper or stainless steel to make, and insulating support 9 adopts insulating material to make.Metallic rod 7,8 is separately fixed at the both sides of insulating support 9.One end car of Metallic rod 7,8 has external thread, can be connected with the sparking electrode with inner hole thread, and the other end of Metallic rod 7,8 has inner bolt hole, can be connected with other devices.The first Metallic rod 7 that connects high-field electrode 2 can be inner mobile at insulating support 9, with this, regulates the spacing of electrode.After spacing between high-field electrode 2 and low-field electrode 3 is adjusted to the right place, by gib screw 10, fix the first Metallic rod 7.The external thread of second Metallic rod 8 one end is connected and fixes with the female insulating support 9 of car.Sparking electrode is sharp electrode or two kinds of forms of plate electrode, and wherein high-field electrode 2 adopts sharp electrode, and low-field electrode 3 is plate electrode, and high-field electrode 2 and low-field electrode 3 also can all adopt sharp electrode form.Radially positioned opposite is in the same horizontal line for high-field electrode 2 and low-field electrode 3.Current-limiting resistance 4 is high-frequency and high-voltage noninductive resistance, and resistance is megohm magnitude; The two ends of current-limiting resistance, with inner bolt hole, can be connected with other devices.The high-voltage output end of the pulse power is connected with high-field electrode 2, and low-field electrode 3 is connected with one end of current-limiting resistance 4, and the other end of current-limiting resistance 4 is connected with the earth terminal of the pulse power 1 and ground connection.Measuring system comprises voltage cell 5 and current measuring unit 6; Voltage measurement unit 5 adopts high-voltage probe in high-field electrode side measuring voltage, and current measuring unit 6 is measured electric current by Luo-coil between current-limiting resistance and ground wire.In pulse circuit, connecting line all adopts the high-voltage conducting wires with insulation sheath.
It is example that the present invention specifically implements take to obtain a milliampere nanosecond pulse electric current for level.Pulse power output voltage amplitude 0-30kV, the about 30ns of rising edge of output pulse, the about 100ns of pulsewidth, repetition frequency 2kHz.High-field electrode in sparking electrode is sharp electrode, and low-field electrode is plate electrode.High-field electrode is connected with two Metallic rod that are fixed on insulating support both sides respectively with low-field electrode, and the spacing between high and low pressure electrode regulates by the Metallic rod being connected with high-field electrode, after adjusting puts in place, by the gib screw of insulating support top, fixes.Current-limiting resistance is the high-frequency and high-voltage noninductive resistance of 1M Ω, the 30kV of resistance to pulse voltage, frequency 10MHz.The high-voltage output end of the pulse power is connected with the Metallic rod connected with high-field electrode by high-voltage conducting wires, the Metallic rod being connected with low-field electrode is connected by one end of high-voltage conducting wires and current-limiting resistance, the other end of current-limiting resistance is connected with the earth terminal of the pulse power by high-voltage conducting wires and ground connection, ground wire adopts copper braid over braid, last and laboratory grounding connection.Voltage adopts high-voltage probe to measure in high-field electrode side, and electric current is measured between current-limiting resistance and ground wire by Luo-coil.
The course of work of the present invention is as follows: gating pulse power supply, make it export the single pulse voltage of certain amplitude, when electrode does not puncture, the electric current of pulse circuit is displacement current, when electrode punctures, loop current is breakdown current, and breakdown current deducts displacement current and is the single milliampere level nanosecond pulse electric current needing.When the pulse power is exported the pulse voltage of repetition frequency, can obtain the milliampere level nanosecond pulse electric current of repetition frequency.The amplitude of pulse current can regulate and control by output voltage amplitude and the current-limiting resistance of the pulse power.The acoustical signal of discharge generation can gather by microphone, and microphone is outside the about 5cm of discharging gap, and microphone is directly measured towards point of discharge.The time domain waveform of voltage, electric current and acoustical signal gathers by oscillograph, by this loop and measuring system, can obtain the associate feature between different discharge parameters and acoustical signal.
The present invention can obtain the milliampere level nanosecond pulse electric current of single and repetition frequency, and parameter is controlled, can be used for simulating the corona discharge of different parameters.
Claims (6)
1. a pulsed discharge loop, is characterized in that, described pulsed discharge loop comprises the pulse power, sparking electrode, current-limiting resistance and measuring unit; The described pulse power is exported high-voltage pulse by cable, the high-voltage output end of the pulse power is connected with the high-pressure side of sparking electrode, the low pressure end of sparking electrode is connected with one end of current-limiting resistance, and the other end of current-limiting resistance is connected with the earth terminal of the pulse power and ground connection.
2. pulsed discharge according to claim 1 loop, is characterized in that: described sparking electrode comprises high-field electrode (2), low-field electrode (3), two Metallic rod (7,8), insulating support (9) and gib screw (10); High-field electrode (2) and low-field electrode (3) have internal thread, are connected with being with externally threaded Metallic rod (7,8), and the other end of Metallic rod (7,8) has inner bolt hole; Two Metallic rod (7,8) are individually fixed in the both sides of insulating support (9), the first Metallic rod (7) that connects high-field electrode (2) can be inner mobile at insulating support (9), spacing between high-field electrode (2) and low-field electrode (3) regulates by the first Metallic rod (7) being connected with high-field electrode (2), fixing by gib screw (10); Radially positioned opposite is in the same horizontal line for described high-field electrode (2) and low-field electrode (3).
3. pulsed discharge according to claim 2 loop, is characterized in that: described high-field electrode (2), low-field electrode (3) and Metallic rod (7,8) adopt copper or stainless steel to make
,insulating support (9) adopts insulating material to make.
4. pulsed discharge according to claim 2 loop, is characterized in that: described high-field electrode (2) and low-field electrode (3) are sharp electrode or plate electrode form.
5. pulsed discharge according to claim 1 loop, is characterized in that: described current-limiting resistance is high-frequency and high-voltage noninductive resistance, and the frequency range of this noninductive resistance is 0-30MHz, and resistance to pulse voltage is 0-50kV; Described current-limiting resistance two ends are with inner bolt hole.
6. pulsed discharge according to claim 1 loop, is characterized in that: described measuring unit comprises voltage measurement unit and current measuring unit; Voltage measurement unit adopts high-voltage probe in sparking electrode high-pressure side measuring voltage, high-voltage probe is connected with sparking electrode high-pressure side, current measuring unit is measured electric current by Luo-coil between current-limiting resistance and ground wire, connects the insulated conductor of current-limiting resistance and ground connection through the center hole of Luo-coil.
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| CN201310574872.4A CN103630809A (en) | 2013-11-15 | 2013-11-15 | Pulse discharge loop |
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| CN201310574872.4A CN103630809A (en) | 2013-11-15 | 2013-11-15 | Pulse discharge loop |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548626A (en) * | 2015-12-23 | 2016-05-04 | 国网重庆市电力公司电力科学研究院 | Pulse electric field generation apparatus |
| CN106950525A (en) * | 2017-03-17 | 2017-07-14 | 中国科学院电工研究所 | A kind of pulse low current calibrating installation |
| CN109510323A (en) * | 2018-12-17 | 2019-03-22 | 广东电网有限责任公司 | A kind of contactless electricity getting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000061291A1 (en) * | 1999-04-09 | 2000-10-19 | Jong Ha Do | Apparatus for experimenting on discharge phenomena using high voltages |
| CN101620975A (en) * | 2008-07-02 | 2010-01-06 | 优志旺电机株式会社 | Discharge lamp |
-
2013
- 2013-11-15 CN CN201310574872.4A patent/CN103630809A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000061291A1 (en) * | 1999-04-09 | 2000-10-19 | Jong Ha Do | Apparatus for experimenting on discharge phenomena using high voltages |
| CN101620975A (en) * | 2008-07-02 | 2010-01-06 | 优志旺电机株式会社 | Discharge lamp |
Non-Patent Citations (3)
| Title |
|---|
| 任成燕等: "直流电压下尖板电晕放电及其声特性试验分析", 《高电压技术》 * |
| 任成燕等: "直流电压下尖板电晕放电及其声特性试验分析", 《高电压技术》, vol. 39, no. 1, 31 January 2013 (2013-01-31) * |
| 许家雨等: "大气压空气中尖-尖间隙60kHz高压放电实验研究", 《高电压技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548626A (en) * | 2015-12-23 | 2016-05-04 | 国网重庆市电力公司电力科学研究院 | Pulse electric field generation apparatus |
| CN105548626B (en) * | 2015-12-23 | 2018-11-27 | 国网重庆市电力公司电力科学研究院 | A kind of impulse electric field generation device |
| CN106950525A (en) * | 2017-03-17 | 2017-07-14 | 中国科学院电工研究所 | A kind of pulse low current calibrating installation |
| CN106950525B (en) * | 2017-03-17 | 2019-03-22 | 中国科学院电工研究所 | A kind of pulse low current calibrating installation |
| CN109510323A (en) * | 2018-12-17 | 2019-03-22 | 广东电网有限责任公司 | A kind of contactless electricity getting device |
| CN109510323B (en) * | 2018-12-17 | 2024-01-23 | 广东电网有限责任公司 | Non-contact electricity taking device |
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Application publication date: 20140312 |