CN204479702U - Transmission line of electricity corona characteristic measuring system in a kind of corona cage - Google Patents
Transmission line of electricity corona characteristic measuring system in a kind of corona cage Download PDFInfo
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- CN204479702U CN204479702U CN201520154675.1U CN201520154675U CN204479702U CN 204479702 U CN204479702 U CN 204479702U CN 201520154675 U CN201520154675 U CN 201520154675U CN 204479702 U CN204479702 U CN 204479702U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 230000005611 electricity Effects 0.000 title claims abstract description 15
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 2
- 230000002459 sustained effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 16
- 238000011160 research Methods 0.000 abstract description 6
- 230000005684 electric field Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 206010038743 Restlessness Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The utility model discloses the transmission line of electricity corona characteristic measuring system in a kind of corona cage, its measurement parameter comprises ultraviolet light subnumber, audible noise, radio interference.The utility model designs and has manufactured portable small corona cage, and carries out test corona test, and simultaneously by being arranged on the ultraviolet device of fixed position, sound meter, radio receiver respectively ultraviolet light subnumber, audible noise, radio interference is measured.Have the test period short, condition is controlled, is convenient to the corona characteristic of research transmission pressure under different electric field intensity.
Description
Technical field
The utility model relates to the transmission line of electricity corona characteristic measuring system in a kind of corona cage.
Background technology
Along with the raising of power transmission engineering electric pressure, the corona characteristic of transmission line of electricity is more and more important, and it is directly connected to the type selecting of wire, and line optimization designs, construction investment and environmental protection.
At present, site test line segment can be adopted to realize the research of transmission line of electricity corona characteristic, the cogency that the experimental study most of true type wire is certain.But, impact is there is in weather condition on the corona characteristic of circuit, the environment, weather etc. of site test line segment are uncontrollable, be difficult to the test condition reaching needs, conductor corona characteristic is studied by means of only site test line segment, very difficult, it is irrational for relying on site test line segment to carry out research completely, utilizes corona cage then can make up the deficiency of test line segment.The function of corona cage, mainly by carrying out the corona characteristic test of multiple split conductor, obtains the test figure of various wire in the short time; Selecting representative split conductor, test section is utilized to carry out real model experiment; Corona characteristic in conjunction with corona cage inside conductor and test section is tested, research transmission line of electricity corona characteristic.
Utility model content
The utility model is in order to solve the problem, propose the transmission line of electricity corona characteristic measuring system in a kind of corona cage, this method is by measuring ultraviolet light subnumber, audible noise, radio interference, the corona characteristic of research transmission pressure under different electric field intensity, has simple, that the test period is short and condition is controlled advantage.
To achieve these goals, the utility model adopts following technical scheme:
Transmission line of electricity corona characteristic measuring system in a kind of corona cage, comprise corona cage, ultraviolet imager, radio interference receiver and sound meter, wherein, corona cage is arranged in screening cage, power transmission line introduces corona cage, and power transmission line one end connects power supply, other end access radio interference receiver, the horizontal direction of power transmission line sustained height is provided with ultraviolet imager and sound meter, ultraviolet imager moves along the horizontal direction of power transmission line and observes.
The distance of described ultraviolet imager and power transmission line is 5-7m.
The distance 3.5-5m of described sound meter and power transmission line.
Described AC power connects trap, and trap connects power transmission line, and trap connects interference current coupling circuit by high-voltage capacitance, and radio interference receiver connects interference current coupling circuit.
Described ultraviolet imager is the DayCor Super type that Ofil company of Israel manufactures, and sound level counts the BK2250 that Denmark produces.
The beneficial effects of the utility model are:
The method test period is short, and condition is controlled, is convenient to the corona characteristic of research transmission pressure under different electric field intensity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that radio interference of the present utility model measures wiring schematic diagram;
Fig. 3 is ultraviolet imager shooting effect figure of the present utility model.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1-Figure 3, transmission line of electricity corona characteristic measuring method in a kind of corona cage, it comprises the following steps: (1): movable corona cage is positioned over high-potting hall, the sampling wire of actual transmission line of electricity is installed, simultaneously by high-voltage connection lead-in conductor, ultraviolet device is placed on distance of wire vertical range 5m place, height maintains an equal level with wire, move along wire horizontal direction in observation process and observe, sound meter is positioned over apart from outside wire 3.5m, height maintains an equal level with conductor height, and radio interference receiver is arranged on test loop;
(2): progressively raise the voltage be applied on wire, and continue to boost to strong degree of discharge, progressively reduce voltage afterwards, to initial voltage level, corresponding photon count rate is recorded respectively for each steady point of discharge;
(3): according to second step pressuring method, repeat 3 times to every root sample, the mean value of the photon count rate of each corona point is as the final value of the final photon count rate of each corona point;
(4): pressurize by second step pressuring method, 8kHz component in ground unrest acoustic pressure before the bloom of record wire, after wire bloom, under each voltage, the mxm. of difference recording noise acoustic pressure 8kHz component and minimum, finally obtain the audible noise mean value that wire samples corona discharge produces;
(5): being converted to the acoustic pressure of conductor corona audible noise 8kHz component with 20uPa is the decibel value of benchmark, and its conversion formula is:
wherein P is the acoustic pressure (unit is Pa) of conductor corona audible noise 8kHz component, P
dBfor the wire audible noise 8kHz component represented with decibel;
(6): by the pressurization of second step pressuring method, measure the radio interference value under each electric pressure before and after bloom, interference value be converted to radio interference level Ψ, can be expressed as:
In formula, the unit of Ψ becomes dB, and UEMI is the radio interference voltage measured, Zeq is the equivalent resistance of measuring circuit under 0.5MHz frequency, and this is 24.9 Ω, l in the utility model is corona cage length, K is measuring circuit correction factor, is 0.51, C concerning this corona cage
0being unit length ground capacitance, is 12.82pF/m, ε
0for permittivity of vacuum, be 8.854187818 × 10
-12f/m.
In Fig. 3, be react the later ultraviolet figure of corona cage inside conductor bloom, the photon number in this moment can be reflected from figure, by the photon number under different voltage, utilize tangent method, the discharge inception voltage value of wire can be calculated.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (4)
1. the transmission line of electricity corona characteristic measuring system in a corona cage, it is characterized in that: comprise corona cage, ultraviolet imager, radio interference receiver and sound meter, wherein, corona cage is arranged in screening cage, power transmission line introduces corona cage, and power transmission line one end connects power supply, other end access radio interference receiver, the horizontal direction of power transmission line sustained height is provided with ultraviolet imager and sound meter, ultraviolet imager moves along the horizontal direction of power transmission line and observes.
2. the transmission line of electricity corona characteristic measuring system in a kind of corona cage as claimed in claim 1, is characterized in that: the distance of described ultraviolet imager and power transmission line is 5-7m.
3. the transmission line of electricity corona characteristic measuring system in a kind of corona cage as claimed in claim 1, is characterized in that: the distance 3.5-5m of described sound meter and power transmission line.
4. the transmission line of electricity corona characteristic measuring system in a kind of corona cage as claimed in claim 1, it is characterized in that: described AC power connects trap, trap connects power transmission line, trap connects interference current coupling circuit by high-voltage capacitance, and radio interference receiver connects interference current coupling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520154675.1U CN204479702U (en) | 2015-03-18 | 2015-03-18 | Transmission line of electricity corona characteristic measuring system in a kind of corona cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520154675.1U CN204479702U (en) | 2015-03-18 | 2015-03-18 | Transmission line of electricity corona characteristic measuring system in a kind of corona cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479702U true CN204479702U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520154675.1U Active CN204479702U (en) | 2015-03-18 | 2015-03-18 | Transmission line of electricity corona characteristic measuring system in a kind of corona cage |
Country Status (1)
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| CN (1) | CN204479702U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730437A (en) * | 2015-03-18 | 2015-06-24 | 国家电网公司 | Corona characteristic measuring system and method for transmission lines in corona cage |
| CN108037383A (en) * | 2017-11-28 | 2018-05-15 | 南方电网科学研究院有限责任公司 | Pipe busbar radio interference test system, calibration system and test method, calibration method |
-
2015
- 2015-03-18 CN CN201520154675.1U patent/CN204479702U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730437A (en) * | 2015-03-18 | 2015-06-24 | 国家电网公司 | Corona characteristic measuring system and method for transmission lines in corona cage |
| CN108037383A (en) * | 2017-11-28 | 2018-05-15 | 南方电网科学研究院有限责任公司 | Pipe busbar radio interference test system, calibration system and test method, calibration method |
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