CN103558515A - Corona generating and measuring device of high-voltage DC wire - Google Patents
Corona generating and measuring device of high-voltage DC wire Download PDFInfo
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- CN103558515A CN103558515A CN201310498163.2A CN201310498163A CN103558515A CN 103558515 A CN103558515 A CN 103558515A CN 201310498163 A CN201310498163 A CN 201310498163A CN 103558515 A CN103558515 A CN 103558515A
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Abstract
The invention discloses a corona generating and measuring device of a high-voltage DC wire. The corona generating and measuring device comprises a base and a corona cage, wherein the base is a U-shaped base, the corona cage is placed in the middle of the U-shaped base, and the corona cage is of a hollow cylinder structure; the middle of the corona cage is a measurement segment, the two sides of the corona cage are protection segments, and the measurement segment and the protection segments are all connected to ground potential; the middle of the corona cage is provided with the wire, and the wire and the corona cage form a coaxial electrode system; the two ends of the wire are provided with voltage-sharing devices, one voltage-sharing device is connected with a high-voltage DC source, the two ends of the high-voltage DC source are connected to a voltmeter in parallel, and the measurement segment is connected to an ampere meter. According to the corona generating and measuring device of the high-voltage DC wire, the corresponding current change of a positive corona and the corresponding current change of a negative corona of the copper wire can be measured, and therefore the influences on corona volt-ampere characteristics by the surface roughness of different wires under the condition of different voltage polarities can be measured.
Description
Technical field
The present invention relates to a kind of power equipment measurement mechanism, relate in particular to a kind of measurement high voltage direct current conductor corona and occur and measurement mechanism.
Background technology
The volt-ampere characteristic of corona is the important indicator of researching DC wire, at present, total space corona field model can be used for measuring the corona volt-ampere characteristic of high-voltage conducting wires, but in total space corona field model, there is very large dispute in the value of a lot of parameters, it is generally acknowledged, it doesn't matter for the bloom field intensity of conductive line surfaces and electrode material, the roughness of conductive line surfaces has a certain impact to bloom field intensity, and total space corona field model cannot be measured this impact.
Summary of the invention
For above-mentioned defect, the invention provides a kind of high voltage direct current electric wire corona and occur and measurement mechanism, measure under different polarity of voltages the impact of different conductive line surfaces roughness on corona volt-ampere characteristic.
To achieve these goals, technical scheme of the present invention is:
A kind of high voltage direct current electric wire corona occurs and measurement mechanism, comprise a base and a corona cage, described base is U-shaped base, described corona cage is placed on the centre of U-shaped seat, corona cage is hollow cylinder structure, centre is measuring section, both sides are shield segment, the equal earthing potential of described measuring section and shield segment, the middle part of corona cage arranges wire, form coaxial electrode system with corona cage, wire two ends all arrange pressure-equalizing device, one of them pressure-equalizing device connects high voltage direct current source, a voltage table of two ends access in parallel in high voltage direct current source, a reometer of measuring section access.
Further, described high voltage direct current source is positive polarity high voltage direct current source or negative polarity high voltage direct current source.
Further, described voltage table is DC digital voltmeter.
Further, described reometer is direct-flow digital ammeter.
Further, described pedestal is that high-density polyethylene material is made.
Further, the material of described corona cage and pressure-equalizing device is stainless steel.
High voltage direct current electric wire corona of the present invention occurs and measurement mechanism, adopt integrated design, the ground-electrode of wire is in a matrix, the error that can reduce to be caused by relative position, the shield segment of corona cage body adopts non-homogeneous design, guaranteed being uniformly distributed of measuring section space electric field, and a size for device that reduces to get over.When high voltage direct current source switches on, copper conductor produces corona, simultaneous measuring apparatus records corona current, when the pressurization of high voltage direct current source, positive corona and negative corona electric current that measurement mechanism can record copper conductor change accordingly, thereby measure under different polarity of voltages the impact of different conductive line surfaces roughness on corona volt-ampere characteristic.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
As shown in Figure 1, high voltage direct current electric wire corona of the present invention occurs and measurement mechanism, comprise a base 1 and a corona cage 2, described base 1 is U-shaped base, described corona cage 2 is placed on the centre of U-shaped seat, corona cage 2 is hollow cylinder structure, centre is measuring section 22, both sides are shield segment 21, described measuring section 22 and the equal earthing potential of shield segment 21, the center of corona cage 2 is along horizontally set wire 3, form coaxial electrode system with corona cage 2, wire 3 two ends all arrange pressure-equalizing device 4, one of them pressure-equalizing device 4 connects high voltage direct current source 5, a voltage table 6 of two ends access in parallel in high voltage direct current source 5, a reometer 7 of measuring section access, reometer 7 one end ground connection.
Described high voltage direct current source 5 is positive polarity high voltage direct current source or negative polarity high voltage direct current source.
Described voltage table 6 is DC digital voltmeter.
Described reometer 7 is direct-flow digital ammeter.
Described pedestal 1 is made by high-density polyethylene material.
The material of described corona cage 2 and pressure-equalizing device 4 is stainless steel.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a high voltage direct current electric wire corona occurs and measurement mechanism, it is characterized in that: this device comprises a base and a corona cage, described base is U-shaped base, described corona cage is placed on the centre of U-shaped seat, corona cage is hollow cylinder structure, centre is measuring section, both sides are shield segment, the equal earthing potential of described measuring section and shield segment, the middle part of corona cage arranges wire, form coaxial electrode system with corona cage, wire two ends all arrange pressure-equalizing device, one of them pressure-equalizing device connects high voltage direct current source, a voltage table of two ends access in parallel in high voltage direct current source, a reometer of measuring section access.
2. high voltage direct current electric wire corona according to claim 1 occurs and measurement mechanism, it is characterized in that: described high voltage direct current source is positive polarity high voltage direct current source or negative polarity high voltage direct current source.
3. high voltage direct current electric wire corona according to claim 1 occurs and measurement mechanism, it is characterized in that: described voltage table is DC digital voltmeter.
4. high voltage direct current electric wire corona according to claim 1 occurs and measurement mechanism, it is characterized in that: described reometer is direct-flow digital ammeter.
5. high voltage direct current electric wire corona according to claim 1 occurs and measurement mechanism, it is characterized in that: described pedestal is made by high-density polyethylene material.
6. high voltage direct current electric wire corona according to claim 1 occurs and measurement mechanism, it is characterized in that: described corona cage and pressure-equalizing device are made by stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498163.2A CN103558515A (en) | 2013-10-22 | 2013-10-22 | Corona generating and measuring device of high-voltage DC wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498163.2A CN103558515A (en) | 2013-10-22 | 2013-10-22 | Corona generating and measuring device of high-voltage DC wire |
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| Publication Number | Publication Date |
|---|---|
| CN103558515A true CN103558515A (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310498163.2A Pending CN103558515A (en) | 2013-10-22 | 2013-10-22 | Corona generating and measuring device of high-voltage DC wire |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457558A (en) * | 2014-11-18 | 2015-03-25 | 国家电网公司 | Estimation method for roughness coefficient of high voltage alternating current wires |
| CN107390012A (en) * | 2017-08-28 | 2017-11-24 | 中国电力科学研究院 | A kind of portable high-pressure DC corona current metering sensor |
| CN110988637A (en) * | 2019-11-28 | 2020-04-10 | 清华大学 | Direct current-impact combined pressurization test loop for power transmission line |
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| JPH05312892A (en) * | 1992-05-14 | 1993-11-26 | Mitsubishi Electric Corp | Corona current measurement |
| US20090322345A1 (en) * | 2008-06-25 | 2009-12-31 | Aisin Aw Co., Ltd. | Insulation coated conductor inspection method and inspection apparatus |
| CN202057762U (en) * | 2011-03-15 | 2011-11-30 | 国网电力科学研究院 | Device for simulating high-altitude conducting wire electromagnetic environment |
| CN102445639A (en) * | 2011-09-22 | 2012-05-09 | 华北电力大学 | Split conductor ion flow space distribution measuring method and device |
| CN102608394A (en) * | 2012-04-01 | 2012-07-25 | 华北电力大学 | Line corona current measurement system and method |
| CN103116056A (en) * | 2012-08-07 | 2013-05-22 | 中国电力科学研究院 | High-voltage direct current broadband domain corona current measurement system |
| CN103245895A (en) * | 2013-04-22 | 2013-08-14 | 安徽省电力科学研究院 | Anticorona discharge connection device for pressurization in high-voltage test |
| CN203164258U (en) * | 2012-08-07 | 2013-08-28 | 中国电力科学研究院 | High-voltage direct current wide frequency domain corona current measuring system |
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2013
- 2013-10-22 CN CN201310498163.2A patent/CN103558515A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05312892A (en) * | 1992-05-14 | 1993-11-26 | Mitsubishi Electric Corp | Corona current measurement |
| US20090322345A1 (en) * | 2008-06-25 | 2009-12-31 | Aisin Aw Co., Ltd. | Insulation coated conductor inspection method and inspection apparatus |
| CN202057762U (en) * | 2011-03-15 | 2011-11-30 | 国网电力科学研究院 | Device for simulating high-altitude conducting wire electromagnetic environment |
| CN102445639A (en) * | 2011-09-22 | 2012-05-09 | 华北电力大学 | Split conductor ion flow space distribution measuring method and device |
| CN102608394A (en) * | 2012-04-01 | 2012-07-25 | 华北电力大学 | Line corona current measurement system and method |
| CN103116056A (en) * | 2012-08-07 | 2013-05-22 | 中国电力科学研究院 | High-voltage direct current broadband domain corona current measurement system |
| CN203164258U (en) * | 2012-08-07 | 2013-08-28 | 中国电力科学研究院 | High-voltage direct current wide frequency domain corona current measuring system |
| CN103245895A (en) * | 2013-04-22 | 2013-08-14 | 安徽省电力科学研究院 | Anticorona discharge connection device for pressurization in high-voltage test |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104457558A (en) * | 2014-11-18 | 2015-03-25 | 国家电网公司 | Estimation method for roughness coefficient of high voltage alternating current wires |
| CN104457558B (en) * | 2014-11-18 | 2018-05-18 | 国家电网公司 | A kind of evaluation method of the high-voltage alternating conducting wire coefficient of roughness |
| CN107390012A (en) * | 2017-08-28 | 2017-11-24 | 中国电力科学研究院 | A kind of portable high-pressure DC corona current metering sensor |
| CN107390012B (en) * | 2017-08-28 | 2020-12-08 | 中国电力科学研究院 | Portable high-voltage direct-current corona current measuring sensor |
| CN110988637A (en) * | 2019-11-28 | 2020-04-10 | 清华大学 | Direct current-impact combined pressurization test loop for power transmission line |
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Application publication date: 20140205 |