CN213658700U - Dirt accumulation characteristic assessment device for high-voltage power transmission facility - Google Patents
Dirt accumulation characteristic assessment device for high-voltage power transmission facility Download PDFInfo
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- CN213658700U CN213658700U CN202022769053.3U CN202022769053U CN213658700U CN 213658700 U CN213658700 U CN 213658700U CN 202022769053 U CN202022769053 U CN 202022769053U CN 213658700 U CN213658700 U CN 213658700U
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- 238000012360 testing method Methods 0.000 claims description 34
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The utility model provides a device for checking the dirt accumulation characteristic of a high-voltage power transmission facility, which comprises a box body, wherein a grounding polar plate and a polar wire which is arranged opposite to the grounding polar plate are arranged in the box body; the box body is also respectively communicated with the aerosol generator, the temperature and humidity controller and the fan through pipelines, and at least one environmental parameter monitoring element and at least one electrical parameter monitoring element are also fixed in the box body; the utility model discloses can the actual atmospheric environment of effectual simulation, have that the parameter is adjustable, experimental design nature is strong, quick examination and evaluation cycle are short advantage.
Description
Technical Field
The utility model relates to a high voltage transmission and transformation and electric power system technical field, in particular to long-pending dirty characteristic examination device of high voltage transmission facility.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Direct current transmission becomes an important part of the construction of strong smart power grids and extra-high voltage alternating current and direct current power grids in China, and is an extremely important energy transmission artery. However, the surface contamination of the pole wire, insulator and dc equipment is more serious than that of the ac transmission because of the static effect of fixed polarity in the dc transmission. The surface of the electrode wire is continuously polluted, the surface roughness of the initiating electrode wire is increased, the field intensity of corona starting is lower and lower, and the corona discharge is stronger and stronger. The corona discharge is enhanced, the space charge is increased, the space resultant field intensity is increased, the charge quantity of the suspended particulate matters in the air is increased due to the two factors, and the electrostatic force for driving the deposition of the particulate matters is in direct proportion to the charge quantity of the particles and the electric field intensity, so that the electrostatic force for driving the electrostatic deposition of the particulate matters is increased, and the deposition is enhanced. Corona discharge and pollution accumulation are mutually promoted, vicious circle is realized, and the corona discharge and the pollution accumulation are continuously increased along with the increase of the operation age. The corona discharge is continuously deteriorated, which leads to the continuous increase of corona loss, and at the same time, the ion current density, the resultant field intensity, the noise and the radio interference, which are the electromagnetic environment indexes closely related to the corona discharge, are continuously deteriorated. The direct current dirt accumulation also brings other two hazards: firstly, the pollution accumulation of the insulator is increased, so that pollution flashover of direct-current transmission is more difficult to control, and the safe operation of a direct-current transmission system is seriously threatened; secondly, the dirt accumulation causes partial discharge, which causes the parts of the porcelain bushing, the direct current filter, the sleeve and other equipment to be broken down and damaged due to the partial discharge. The measures of increasing the length of the insulator string, repeatedly cleaning dirt on the surface of equipment, coating anti-pollution flashover coating and the like are adopted, and the construction cost and the operation and maintenance cost of external insulation control are increased. Therefore, the assessment and the evaluation of the pollution accumulation characteristics of the high-voltage direct-current power transmission facility are very necessary.
In the field of external insulation control, detection and analysis of ash density and salt density are adopted to examine the pollution deposition characteristics, so that a basis is provided for external insulation pollution flashover control and local discharge control; the method reflects the actual condition of the surface dirt accumulation of the equipment, but the surface dirt amount of the equipment cannot be directly checked, and the dirt accumulation speed is difficult to check; moreover, the natural fouling period is long, the environmental change factors are too many and uncontrollable during evaluation, the pollution-inducing factors are difficult to identify, and the influence of the operation factors cannot be selectively evaluated.
SUMMERY OF THE UTILITY MODEL
In order to solve the not enough of prior art, the utility model provides a long-pending dirty characteristic examination device of high-voltage transmission facility can the actual atmospheric environment of effectual simulation, has that the parameter is adjustable, experimental design nature is strong, examine fast and evaluate the advantage that the cycle is short.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for assessing the dirt accumulation characteristic of a high-voltage power transmission facility comprises a box body, wherein a grounding polar plate and a polar wire which is arranged opposite to the grounding polar plate are arranged in the box body;
the box body is also respectively communicated with the aerosol generator, the temperature and humidity controller and the fan through pipelines, and at least one environmental parameter monitoring element and at least one electrical parameter monitoring element are fixed in the box body
As some possible implementations, the pole wire includes a double-ended shielding region and an intermediate sampling region.
By way of further limitation, the length of the three regions is greater than or equal to the spacing between the pole wire and the ground plate.
By way of further limitation, a sample strip is included that is positioned in the middle of the pole lead sampling region.
As some possible implementations, the enclosure is a closed enclosure.
As some possible implementations, the test strip device further includes a sampling test strip disposed on the ground plate.
As some possible realization modes, the grounding polar plate is a conductive plate fixed at the bottom in the box body.
As some possible realization modes, an insulating support is fixed in the box body, and the pole wire is detachably and fixedly connected with the insulating support.
By way of further limitation, the pole wire is disposed directly above the ground plate, and the insulating support is fixed to the ground plate.
As some possible implementations, the pole wire is disposed directly opposite the center of the ground plate.
As some possible realization modes, the output end of the power supply is connected with the pole lead through a lead.
Compared with the prior art, the beneficial effects of the utility model are that:
1. device, can the actual atmospheric environment of effectual simulation, have that the parameter is adjustable, experimental design nature is strong, examine fast and evaluate the short advantage of cycle.
2. Device, can be through the cooperation of fan, aerosol generator, atmospheric control ware, power supply, environmental parameter monitoring element and electrical parameter monitoring element, can simulate different atmospheric variation, very big improvement the accuracy of long-pending dirty examination.
3. Device, can not only carry out the long-pending dirty characteristic examination of high-voltage transmission facility through the test sample of putting on the ground connection polar plate, also can examine through the long-pending dirty characteristic of the direct realization power transmission line of utmost point wire.
4. Device, utmost point wire falls into three regions, both ends shielding area territory and middle sampling area territory promptly, and three regional length is not less than utmost point wire and earth electrode plate interval, when the long-pending dirty characteristic influence factor of examination aassessment, can place test sample in middle sampling area territory, overcome the influence of edge effect.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic structural view of a device for assessing the fouling characteristics of a high-voltage power transmission facility provided by embodiment 1 of the present invention.
Wherein, 1, a dirt accumulation characteristic assessment test box; 2. a pole wire; 3. a ground plate; 4. an insulating support; 5. a shielded region; 6. a middle sampling region; 7. a test sample; 8. an aerosol generator; 9. a temperature and humidity controller; 10. a power supply; 11. a fan; 12. an environmental parameter monitoring module; 13. an electrical parameter monitoring module; 14. and connecting the pipelines.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.
Example 1:
as shown in fig. 1, the embodiment 1 of the present invention provides a device for assessing the pollutant accumulation characteristics of a high voltage power transmission facility, which comprises a pollutant accumulation characteristic assessment test box 1, an aerosol generator 8, a temperature and humidity controller 9, a power supply 10, a fan 11, an environmental parameter monitoring module 12, an electrical parameter monitoring module 13 and a connecting pipeline 14;
the pollution assessment test box is internally provided with a polar lead 2 and a grounding polar plate 3, and the aerosol generator 8 and the temperature and humidity controller 9 are used for regulating and controlling the aerosol concentration and the air temperature and humidity in the pollution assessment test box 1;
the power supply 10 applies high voltage to the polar lead 2, the fan 11 is used for regulating and controlling airflow of the fouling examination test box 1, and the environmental parameter monitoring module 12 comprises a plurality of environmental parameter sensors (namely environmental parameter monitoring elements) used for examining aerosol concentration, temperature and humidity and air pressure in the test box 1 according to the fouling characteristics;
the electrical parameter monitoring module 13 comprises a plurality of electrical parameter monitoring sensors (i.e. electrical parameter monitoring elements) for monitoring voltage, current, synthesized field intensity and ion current, the connecting pipeline 14 is used for connecting the fan, the aerosol generator 8 and the temperature and humidity controller 9 with the pollution characteristic assessment test box 1, so that gas circulation or discharge to outdoor atmosphere is realized, the dust generation amount of the aerosol generator 8 is regulated and controlled to be 1-100 times of the concentration of the aerosol in the atmospheric environment, the pollution accumulation time of a test sample is shortened, and the assessment speed is accelerated;
the pole lead is divided into three areas, namely a shielding area 5 at two ends and a middle sampling area 6, the length of the three areas is not less than the distance between the pole lead 2 and the grounding pole plate 3, and when assessing and evaluating the pollution accumulation characteristic influence factors of the surface material of the ground power facility, a test sample 7 can be placed in the middle sampling area to overcome the influence of the edge effect.
It is understood that in other embodiments, only the polar lead 2 can be used as a test sample to examine the pollution accumulation characteristics of the transmission line.
It can be understood that the assessment device described in this embodiment is also suitable for assessing the fouling characteristics of the high-voltage ac power transmission facility, and those skilled in the art can select the fouling characteristics according to specific working conditions, which are not described herein again.
In the embodiment, a test sample can be placed in the device for assessing the dirt accumulation characteristics of the direct-current power transmission facility, the test sample is taken out after the test device runs for a certain period of time, and the dirt accumulation amount is weighed, so that the influence of aerosol concentration in the atmospheric environment, running voltage, facility surface materials, environmental factors and the like on the dirt accumulation of the facility and the dirt accumulation degree of the facility can be assessed; the soil accumulation characteristics of experimental samples of the ground power facility located at the end points and in the middle area of the polar wire can be tested.
Or, the pollution accumulation characteristic of the transmission line is tested by directly taking the polar lead as a sample without putting a test sample.
In this embodiment, the pole lead 2 and the ground pole plate 3 are placed inside the contamination characteristic assessment test box 1, and the pole lead 2 is fixed by the insulating support 4.
In this embodiment, the size of the dirt accumulation characteristic assessment test box 1 is a sealed box body with the length of 3000mm, the width of 1500mm and the height of 1500mm, and the sealed box body is formed by processing organic glass with the thickness of 10mm, and it can be understood that in other embodiments, the dirt accumulation characteristic assessment test box 1 can also be a transparent box body made of toughened glass, a transparent box body made of plastic, or an opaque box body made of other materials, and the technical personnel in the field can select the box body according to specific working conditions, and the details are not described herein.
It can be understood that the structure of the box body may be a rectangular parallelepiped, a cube, a cylinder, or the like, and those skilled in the art may select the structure according to specific working conditions, which is not described herein again.
The pole lead 2 is made of an aluminum metal wire with the diameter of 2mm, the length of the pole lead is 1500mm, the shielding wire area 5 of the pole lead 2 is 500mm, and the middle 500mm area of the pole lead 2 is a sampling area 6;
the grounding polar plate is made of a stainless steel plate with the length of 2000mm, the width of 1500mm and the thickness of 5 mm;
an insulating support 4 made of 40mm polyethylene rods is used for fixing the pole lead 2, and the distance between the pole lead 2 and the grounding pole plate 3 is 500 mm;
the test sample 7 is placed on the grounding polar plate 3, and the size of the test sample is a metal sheet with the length of 40mm, the width of 40mm and the thickness of 0.5mm, so that the pollution accumulation capacity characteristic of the test sample 7 of the ground power facility positioned at the end point and the middle area of the polar lead 2 can be tested;
the output end of the power supply 10 is connected with the polar lead 2 by a lead, and the grounding polar plate 3 is connected with the grounding electrode by a lead.
The detailed working method of the device comprises the following steps:
step 1, placing a sampling test piece 7 according to a test item of an electric power facility to be tested; the method specifically comprises the following steps: if the influence factors of the dirt accumulation characteristics of the surface material of the ground power facility are tested and evaluated, a sampling test piece 7 is placed in a sampling area 6 in the middle of the polar lead 2; if the influence factors of the pollution accumulation characteristics of the ground electric facilities of the end points of the electrode lead 2 and the middle sampling area 6 are tested and evaluated, the sampling test piece 7 is placed on the grounding electrode plate 3.
As expressed by the following formula (1),
in the formula:
t is the accumulated pollution sampling time(s);
m is the minimum scale (g) of the weighing instrument;
v is aerosol deposition speed (m/s);
s is the area of the sampling sheet (m)2)；
C is aerosol concentration (g/m)3)。
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The device for assessing the dirt accumulation characteristic of the high-voltage power transmission facility is characterized by comprising a box body, wherein a grounding polar plate and a polar wire which is arranged opposite to the grounding polar plate are arranged in the box body;
the box body is further communicated with the aerosol generator, the temperature and humidity controller and the fan through pipelines respectively, and at least one environmental parameter monitoring element and at least one electrical parameter monitoring element are further fixed in the box body.
2. The device for assessing fouling characteristics of a high-voltage power transmission facility as claimed in claim 1, wherein the pole conductors comprise two end shielding regions and an intermediate sampling region.
3. The device for assessing the fouling characteristics of a high-voltage power transmission facility according to claim 2, wherein the length of the three regions is greater than or equal to the distance between the pole wire and the ground plate.
4. The device for assessing the fouling characteristics of a high-voltage power transmission facility as claimed in claim 2, further comprising a sampling strip disposed in the middle sampling region of the pole wire.
5. The assessment device for the fouling characteristics of a high-voltage power transmission facility according to claim 1, wherein the box body is a closed box body;
alternatively, the first and second electrodes may be,
the device also comprises a sampling test piece arranged on the grounding polar plate.
6. The apparatus according to claim 1, wherein the ground plate is a conductive plate fixed to the bottom of the housing.
7. The apparatus according to claim 1, wherein an insulating support is fixed in the box, and the pole wire is detachably and fixedly connected to the insulating support.
8. The apparatus according to claim 7, wherein the positive conductor is disposed directly above the ground plate, and the insulating support is fixed to the ground plate.
9. The apparatus according to claim 1, wherein the pole wire is disposed opposite to a center of the grounding plate.
10. The apparatus according to claim 1, wherein the power supply output is connected to the pole wire by a wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022769053.3U CN213658700U (en) | 2020-11-25 | 2020-11-25 | Dirt accumulation characteristic assessment device for high-voltage power transmission facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022769053.3U CN213658700U (en) | 2020-11-25 | 2020-11-25 | Dirt accumulation characteristic assessment device for high-voltage power transmission facility |
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| Publication Number | Publication Date |
|---|---|
| CN213658700U true CN213658700U (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022769053.3U Active CN213658700U (en) | 2020-11-25 | 2020-11-25 | Dirt accumulation characteristic assessment device for high-voltage power transmission facility |
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| Country | Link |
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| CN (1) | CN213658700U (en) |
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- 2020-11-25 CN CN202022769053.3U patent/CN213658700U/en active Active
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