CN109142895A - The easy measuring device of DC wire space potential and total electric field distribution - Google Patents
The easy measuring device of DC wire space potential and total electric field distribution Download PDFInfo
- Publication number
- CN109142895A CN109142895A CN201810732854.7A CN201810732854A CN109142895A CN 109142895 A CN109142895 A CN 109142895A CN 201810732854 A CN201810732854 A CN 201810732854A CN 109142895 A CN109142895 A CN 109142895A
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- Prior art keywords
- electric field
- traverse line
- field distribution
- measure traverse
- measuring device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
- G01R29/14—Measuring field distribution
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
A kind of easy measuring device of DC wire space potential and total electric field distribution, including measure traverse line, the measure traverse line is fixed on insulating support, one end of the measure traverse line is electrically connected by connecting wire with the level-one for detecting power supply, another pole of the detection power supply is grounded by earth lead, sampling resistor is in series on the earth lead, the both ends of the sampling resistor are electrically connected with differential pressure indicator.The beneficial effect is that: it may be implemented to measure the space potential and field distribution near DC power transmission line undistortedly, it is at low cost, test scope is wide, precision is high.
Description
Technical field
The present invention relates to DC corona measurement of electric parameter field, especially a kind of DC wire space potential and synthesis electricity
The easy measuring device of field distribution.
Background technique
The monitoring of DC electric field has become the pith of DC transmission engineering environmental impact assessment monitoring.DC transmission line
The directed movement in the electric field of space charge caused by the corona discharge of road, is distributed in entire field domain.Direct current total electric field is by marking
Field and space charge collective effect is claimed to generate, and the influence that the electric field that space charge generates changes vulnerable to external environment, it is difficult to it is quasi-
Really measure.
The method of existing measurement direct-current ground total electric field is had the following problems using rotary voltmeter:
1. rotary voltmeter is only used for the formate field intensity at measurement earth's surface, it is not capable of measuring the spatial distribution of DC fields；
2. being in actual measurement the measurement accuracy for guaranteeing rotary voltmeter, corresponding anti-electric field distortion is done toward contact needs
Measure, such as it is laid with shielding metal plate；
3. the rotary voltmeter in test is inconvenient to move, measurement ground electric field needs several even tens of rotations when being distributed
Turn voltmeter while measuring, testing cost is higher；
4. since there are a large amount of charged particles, the space charge in field domain will enter rotary voltmeter and pop one's head in space
It is interior, certain influence can be generated on measurement result.
Summary of the invention
The purpose of the present invention is to solve the above problem, a kind of DC wire space potential and total electric field point are devised
The easy measuring device of cloth.Specific design scheme are as follows:
A kind of easy measuring device of DC wire space potential and total electric field distribution, including measure traverse line, the survey
Amount conducting wire is fixed on insulating support, and one end of the measure traverse line is electrically connected by connecting wire with the level-one for detecting power supply,
Another pole of the detection power supply is grounded by earth lead, and sampling resistor, the sampling electricity are in series on the earth lead
The both ends of resistance are electrically connected with differential pressure indicator.
One end of the measure traverse line is fixed on the insulating support, the other end through casing and with the connecting wire
Electrical connection, the measure traverse line are placed in the horizontal direction, and insulating layer is wrapped up in the outside of the connecting wire.
The diameter of the measure traverse line is 0.1mm-10mm, and the terrain clearance of the measure traverse line is 0m-5m.
The quantity of the insulating support be it is multiple, the multiple insulating support along the measure traverse line axial direction in straight
Linear array column distribution, the insulating support are the column strut being disposed vertically, and the insulating support is polytetrafluoroethylene (PTFE) bracket.
The detection power supply is high-voltage DC power supply, and the detection power supply is the adjustable DC power supply of output voltage.
The sleeve is brass sleeve, and inner wall, the outer wall of the sleeve are smooth surface.
The easy of DC wire space potential and total electric field distribution that above-mentioned technical proposal through the invention obtains is surveyed
Device is measured, the beneficial effect is that:
It may be implemented to measure the space potential and field distribution near DC power transmission line, at low cost, test undistortedly
Range is wide, precision is high.
Detailed description of the invention
Fig. 1 is the structural representation of the easy measuring device of DC wire space potential and total electric field distribution of the present invention
Figure；
In figure, 1, measure traverse line；2, insulating support；3, power supply is measured；4, earth lead；5, sampling resistor；6, sleeve；7.
Differential pressure indicator；8, connecting wire；9, high voltage direct current conducting wire.
Specific embodiment
The present invention is specifically described with reference to the accompanying drawing.
Fig. 1 is the structural representation of the easy measuring device of DC wire space potential and total electric field distribution of the present invention
Figure, a kind of easy measuring device of DC wire space potential and total electric field distribution, including measure traverse line 1, which is characterized in that
The measure traverse line is fixed on insulating support 2, and one end of the measure traverse line 1 passes through connecting wire 8 and the one of detection power supply 3
Another pole of grade electrical connection, the detection power supply 3 is grounded by earth lead 4, is in series with sampling resistor on the earth lead 4
5, the both ends of the sampling resistor 5 are electrically connected with differential pressure indicator 7.
One end of the measure traverse line 1 is fixed on the insulating support 2, the other end through casing 6 and with the connection
Conducting wire 8 is electrically connected, and the measure traverse line 1 is placed in the horizontal direction, and insulating layer is wrapped up in the outside of the connecting wire 8.
The diameter of the measure traverse line 1 is 0.1mm-10mm, and the terrain clearance of the measure traverse line 1 is 0m-5m.
The quantity of the insulating support 2 is multiple, axial direction of the multiple insulating support 2 along the measure traverse line 1
Linear array distribution, the insulating support 2 are the column strut being disposed vertically, and the insulating support 2 is polytetrafluoroethylene (PTFE) branch
Frame.
The detection power supply 3 is high-voltage DC power supply, and the detection power supply 3 is the adjustable DC power supply of output voltage.
The sleeve 6 is brass sleeve, and inner wall, the outer wall of the sleeve 6 are smooth surface.
Measure traverse line 1 is smooth thin wire, and 1 both ends of measure traverse line are fixed on insulating support 2.Insulating support 2 by
Polytetrafluoroethylene (PTFE) is made, and height is conveniently adjusted.1 one end of measure traverse line connects with measurement power supply 3, and junction does one
Smooth casing 6, avoids junction bloom.Casing 6 is made of brass, and edge polishes smooth.Measurement power supply 3 passes through sampling
Resistance 5 is grounded, and the potential difference at 5 both ends of sampling resistor can be measured by differential pressure indicator 7.If the output voltage for measuring power supply 3 is set
Zero, then measure traverse line 1 is regarded as ground potential, when high voltage direct current 8 bloom of conducting wire, is filled with charged particles, part in space
Charge can enter ground by measure traverse line 1, therefore 5 both ends of sampling resistor can generate potential difference.Adjust the output electricity of measurement power supply 3
Pressure, so that the potential difference at 5 both ends of sampling resistor is zero, then measure traverse line 1 is injected without charge, if the radius of measure traverse line 1 is enough
It is small, the space potential of measure traverse line present position when output voltage at this time is DC corona.Adjust insulating support 2 over the ground
Highly, the continuously space potential distribution at measurement different height, can calculate space combination field distribution accordingly.
Embodiment 1
The easy measuring device being distributed by the DC wire space potential and total electric field, tests single DC wire
Space potential and total electric field distribution when (diameter 0.4mm, terrain clearance 80cm) application -30kV high pressure is as follows:
1. space potential of table and total electric field distribution
| Distance away the ground (cm) | Current potential (kV) | Total electric field (kV/m) |
| 0 | 0 | 28.02 |
| 10 | -2.91 | 26.26 |
| 20 | -5.62 | 24.78 |
| 30 | -8.17 | 23.63 |
| 40 | -10.58 | 22.96 |
| 50 | -12.91 | 25.09 |
Embodiment 2
The easy measuring device being distributed by the DC wire space potential and total electric field, tests single DC wire
Space potential and total electric field distribution when (diameter 0.4mm, terrain clearance 80cm) application -40kV high pressure is as follows:
2. space potential of table and total electric field distribution
| Distance away the ground (cm) | Current potential (kV) | Total electric field (kV/m) |
| 0 | 0 | 44.31 |
| 10 | -4.61 | 41.26 |
| 20 | -8.88 | 38.59 |
| 30 | -12.87 | 36.28 |
| 40 | -16.61 | 34.39 |
| 50 | -20.14 | 37.20 |
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
The principle of the present invention is embodied to some variations that some of them part may be made, belongs to the scope of protection of the present invention it
It is interior.
Claims (6)
1. the easy measuring device of a kind of DC wire space potential and total electric field distribution, including measure traverse line (1), feature
It is, the measure traverse line is fixed on insulating support (2), and one end of the measure traverse line (1) passes through connecting wire (8) and inspection
The level-one electrical connection of power supply (3) is surveyed, another pole of detection power supply (3) is grounded by earth lead (4), the earth lead
(4) it is in series on sampling resistor (5), the both ends of the sampling resistor (5) are electrically connected with differential pressure indicator (7).
2. the easy measuring device of DC wire space potential according to claim 1 and total electric field distribution, special
Sign is that one end of the measure traverse line (1) is fixed on the insulating support (2), the other end through casing (6) and with it is described
Connecting wire (8) electrical connection, the measure traverse line (1) are placed in the horizontal direction, and insulation is wrapped up in the outside of the connecting wire (8)
Layer.
3. the easy measuring device of DC wire space potential according to claim 1 and total electric field distribution, special
Sign is that the diameter of the measure traverse line (1) is 0.1mm-10mm, and the terrain clearance of the measure traverse line (1) is 0m-5m.
4. the easy measuring device of DC wire space potential according to claim 1 and total electric field distribution, special
Sign is that the quantity of the insulating support (2) is multiple, axial direction of the multiple insulating support (2) along the measure traverse line (1)
The linear array distribution in direction, the insulating support (2) are the column strut being disposed vertically, and the insulating support (2) is poly- four
Vinyl fluoride bracket.
5. the easy measuring device of DC wire space potential according to claim 1 and total electric field distribution, special
Sign is that the detection power supply (3) is high-voltage DC power supply, and the detection power supply (3) is the adjustable DC power supply of output voltage.
6. the easy measuring device of DC wire space potential according to claim 2 and total electric field distribution, special
Sign is that the sleeve (6) is brass sleeve, and inner wall, the outer wall of the sleeve (6) are smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810732854.7A CN109142895A (en) | 2018-07-05 | 2018-07-05 | The easy measuring device of DC wire space potential and total electric field distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810732854.7A CN109142895A (en) | 2018-07-05 | 2018-07-05 | The easy measuring device of DC wire space potential and total electric field distribution |
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|---|---|
| CN109142895A true CN109142895A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810732854.7A Pending CN109142895A (en) | 2018-07-05 | 2018-07-05 | The easy measuring device of DC wire space potential and total electric field distribution |
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Citations (9)
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|---|---|---|---|---|
| WO2011052879A2 (en) * | 2009-10-30 | 2011-05-05 | 한국전력공사 | System and method using a miniature model to assess power transmission line characteristics |
| GB2493073A (en) * | 2011-07-15 | 2013-01-23 | Bruker Daltonics Inc | Determining ion currents in a quadrupole mass spectrometer |
| CN203490299U (en) * | 2013-08-29 | 2014-03-19 | 华北电力大学 | Space charge density measuring apparatus |
| SE1400395A1 (en) * | 2014-08-20 | 2014-08-22 | Abb Technology Ltd | Method for sensing a space charge characteristic |
| JP2015219116A (en) * | 2014-05-19 | 2015-12-07 | 株式会社ビスキャス | Calibration method of electric charge density in space-charge distribution measurement |
| CN106680603A (en) * | 2017-01-17 | 2017-05-17 | 清华大学 | Method for calculation of characteristic lines of three-dimensional ionized field of direct current transmission line |
| CN106908668A (en) * | 2017-01-20 | 2017-06-30 | 中国电力科学研究院 | A kind of processing method and system of actual measurement ground total electric field data |
| CN107271857A (en) * | 2017-05-24 | 2017-10-20 | 国家电网公司 | Determination method and system based on streamer guide's system progressions model key parameters |
| CN107677896A (en) * | 2017-09-28 | 2018-02-09 | 上海交通大学 | Same district timesharing conductance space charge measurement device based on body capacitance |
-
2018
- 2018-07-05 CN CN201810732854.7A patent/CN109142895A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011052879A2 (en) * | 2009-10-30 | 2011-05-05 | 한국전력공사 | System and method using a miniature model to assess power transmission line characteristics |
| GB2493073A (en) * | 2011-07-15 | 2013-01-23 | Bruker Daltonics Inc | Determining ion currents in a quadrupole mass spectrometer |
| CN203490299U (en) * | 2013-08-29 | 2014-03-19 | 华北电力大学 | Space charge density measuring apparatus |
| JP2015219116A (en) * | 2014-05-19 | 2015-12-07 | 株式会社ビスキャス | Calibration method of electric charge density in space-charge distribution measurement |
| SE1400395A1 (en) * | 2014-08-20 | 2014-08-22 | Abb Technology Ltd | Method for sensing a space charge characteristic |
| CN106680603A (en) * | 2017-01-17 | 2017-05-17 | 清华大学 | Method for calculation of characteristic lines of three-dimensional ionized field of direct current transmission line |
| CN106908668A (en) * | 2017-01-20 | 2017-06-30 | 中国电力科学研究院 | A kind of processing method and system of actual measurement ground total electric field data |
| CN107271857A (en) * | 2017-05-24 | 2017-10-20 | 国家电网公司 | Determination method and system based on streamer guide's system progressions model key parameters |
| CN107677896A (en) * | 2017-09-28 | 2018-02-09 | 上海交通大学 | Same district timesharing conductance space charge measurement device based on body capacitance |
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| Title |
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| A. DARKAWI等: "Portable installation for space charge measurements on full-size high voltage cable loops based on a multicell power converter", 《2012 ANNUAL REPORT CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA》 * |
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Application publication date: 20190104 |