CN109975671B - Corona test system for simulating environment - Google Patents
Corona test system for simulating environment Download PDFInfo
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- CN109975671B CN109975671B CN201910317332.5A CN201910317332A CN109975671B CN 109975671 B CN109975671 B CN 109975671B CN 201910317332 A CN201910317332 A CN 201910317332A CN 109975671 B CN109975671 B CN 109975671B
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000004321 preservation Methods 0.000 claims abstract description 24
- 238000004088 simulation Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 238000009413 insulation Methods 0.000 claims description 19
- 239000002985 plastic film Substances 0.000 claims description 4
- 229920006255 plastic film Polymers 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 239000010813 municipal solid waste Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 210000003437 trachea Anatomy 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 206010024796 Logorrhoea Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- General Physics & Mathematics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses a corona test system for simulating an environment, which comprises an insulating heat preservation box, wherein a horizontally placed electrode bar is arranged in the insulating heat preservation box, a vertically placed electrode plate is arranged on the opposite side of the electrode bar, an environment simulation system is arranged above the inside of the insulating heat preservation box, the environment simulation system comprises a charging basket, a pressure plate, a push rod, a cone pulley, a barrel and a volute spiral spring, the charging basket is a barrel body with an upper opening and a lower opening, a rotating ring is arranged at the bottom of the barrel body, a grinding disc with a through hole is arranged in the rotating ring, the rotating ring is driven to rotate by a driving mechanism, the pressure plate is arranged in the charging basket, the pressure plate is connected with the push rod, the push rod is provided with a rack, the cone pulley and the barrel are rotatably arranged on the insulating heat preservation box, the cone pulley is provided with a first gear meshed with. The invention aims to provide a corona test system for simulating an environment, which can simulate a snowing environment and has a simple structure and low cost.
Description
Technical Field
The invention relates to the technical field of corona tests, in particular to a corona test system for simulating an environment.
Background
Corona discharge is a discharge phenomenon that occurs due to ionization of air caused by high electric field intensity on the surface of a wire. The free strength of air molecules is generally 20-30 kV/cm, when the electric field intensity on the surface of a transmission line exceeds the value, the transmission line can hear a hissing discharge sound, smell ozone, and blue-purple fluorescence emitted around the transmission line can be seen at night, namely corona discharge. In the corona test, the corona discharge condition under various natural environments needs to be simulated, wherein the snowing environment is difficult to simulate, a snow making machine is usually needed for making snow, the snow making machine adopts a method of spraying high-pressure water and rapidly cooling the high-pressure water for making snow, the cost is high, and the popularization is difficult.
Disclosure of Invention
Aiming at the prior art, the invention provides the corona test system for simulating the environment, which can simulate the snowing environment and has simple structure and low cost.
The technical scheme of the invention is realized as follows:
a corona test system for simulating environment comprises an insulating heat preservation box, wherein electrode rods horizontally placed are arranged in the insulating heat preservation box, electrode plates vertically placed are arranged on opposite sides of the electrode rods, an environment simulation system is arranged above the inside of the insulating heat preservation box and comprises a charging basket, a pressure plate, a push rod, a cone pulley, a barrel and a volute spring, the charging basket is a barrel body with an upper opening and a lower opening, a rotating ring is arranged at the bottom of the charging basket, a grinding disc with a through hole is arranged in the rotating ring, the rotating ring is driven to rotate by a driving mechanism, the pressure plate is arranged in the charging basket, the pressure plate is connected with the push rod, the push rod is provided with a rack, the cone pulley and the barrel are rotatably arranged on the insulating heat preservation box, the cone pulley is provided with a first gear meshed with the rack, the cone pulley and the barrel rope are mutually driven through a first gear, one end of the volute spiral spring is connected with the barrel, and the other end of the volute spiral spring is connected with the insulating heat preservation box.
Furthermore, the driving mechanism comprises a motor arranged on the charging bucket and an outer gear ring arranged on the rotating ring, a second gear is arranged on an output shaft of the motor, and the second gear is meshed with the outer gear ring.
Furthermore, the environment simulation system further comprises a water tank, a water pump and a nozzle, wherein the nozzle is arranged in the insulation heat preservation box, the water pump is arranged in the water tank, and the water pump is connected with the nozzle through a pipeline.
Further, the storage bucket below is equipped with throws the device, it includes air pump, back taper dustcoat, toper inner cover and guide plate to throw the device, and back taper dustcoat upper end and lower extreme all are equipped with the opening, the toper inner cover is only equipped with the opening below, toper inner cover is established the cover and is located in the back taper dustcoat, leave the clearance between toper inner cover and the back taper dustcoat, the guide plate is located back taper dustcoat bottom, be equipped with the annular chamber in the guide plate, the annular chamber passes through annular seam and guide plate upper surface intercommunication, the annular chamber pass through the trachea with the air pump is connected, the annular seam orientation in the middle of the toper inner cover, the guide plate is used for following the centre of the gas direction toper inner cover that the annular seam came out.
Furthermore, a spherical cover is arranged at the top of the conical inner cover, and the concave surface of the spherical cover faces downwards.
Furthermore, a collecting box is arranged at the bottom of the insulating heat-preserving box, and a plastic film is laid in the collecting box.
The air-pressure gauge is characterized by further comprising a seal box, the insulation heat preservation box is arranged in the seal box, the seal box is connected with the air pump, and an air pressure gauge is arranged in the seal box.
Furthermore, the insulating heat preservation box is provided with a mounting rack, and the cone pulley, the barrel and the volute spiral spring are mounted on the insulating heat preservation box through the mounting rack.
Furthermore, a guide rail is arranged on the mounting frame, a sliding groove is arranged on the push rod, and the sliding groove slides along the guide rail.
The invention has the beneficial effects that: and grinding the crushed ice, and dropping out the ice crystals of the ground micro particles through the through holes to form artificial snow so as to achieve the effect of simulating snowfall weather. The ice crystals with tiny particles form a simulated simple snowing environment of artificial snow, large and expensive equipment such as a snowmaker is not needed, the structure is simple, and the cost is low.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a front structure of a corona testing system for simulating an environment according to the present invention;
FIG. 2 is an enlarged view of the structure of the area A in FIG. 1;
FIG. 3 is a schematic side view of an environmental simulation corona testing system according to the present invention;
FIG. 4 is a schematic cross-sectional view of an environmental simulation system according to the present invention;
FIG. 5 is an enlarged view of the structure of the area B in FIG. 4;
FIG. 6 is an enlarged view of the structure of the area C in FIG. 5;
in the figure, 1 is an insulating incubator, 2 is an electrode rod, 3 is an electrode plate, 4 is a charging basket, 5 is a pressure plate, 6 is a push rod, 7 is a cone pulley, 8 is a round barrel, 9 is a volute spring, 10 is a rotating ring, 11 is a grinding disc, 12 is a rack, 13 is a first gear, 14 is a rope, 15 is a motor, 16 is an outer gear ring, 17 is a second gear, 18 is a water tank, 19 is a water pump, 20 is a nozzle, 21 is an air pump, 22 is an inverted cone outer cover, 23 is a cone inner cover, 24 is a guide plate, 25 is an annular cavity, 26 is an annular gap, 27 is an air pipe, 28 is an air pump, 29 is a spherical cover, 30 is a collection box.
Detailed Description
In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 6, a corona test system for simulating an environment comprises an insulating heat preservation box 1, an electrode rod 2 horizontally arranged is arranged in the insulating heat preservation box 1, an electrode plate 3 vertically arranged is arranged on the opposite side of the electrode rod 2, an environment simulation system is arranged above the inside of the insulating heat preservation box 1 and comprises a charging basket 4, a pressure plate 5, a push rod 6, a cone pulley 7, a barrel 8 and a volute spiral spring 9, the charging basket 4 is a barrel body with an upper opening and a lower opening, a rotating ring 10 is arranged at the bottom of the charging basket 4, a grinding disc 11 with a through hole 36 is arranged in the rotating ring 10, the rotating ring 10 is driven to rotate by a driving mechanism, the pressure plate 5 is arranged in the charging basket 4, the pressure plate 5 is connected with the push rod 6, the push rod 6 is provided with a rack 12, the cone pulley 7 and the barrel 8 are rotatably arranged on the insulating heat preservation box 1, the cone pulley 7 is provided with a first gear 13 meshed with the, the cone pulley 7 and the barrel 8 are mutually driven through a rope 14, one end of the volute spiral spring 9 is connected with the barrel 8, and the other end of the volute spiral spring is connected with the insulating heat preservation box 1.
When the test is carried out, high voltage is connected to the electrode rod 2, the electrode plate 3 is grounded, and the corona test is carried out. During the corona test in the simulation snow day, put into the broken ice piece from the upper shed of storage bucket 4, push down the broken ice piece with pressure disk 5, pressure disk 5 and push rod 6 are connected, and push rod 6 is equipped with rack 12, and rack 12 and first gear 13 meshing, first gear 13 are located on cone pulley 7, and is concrete, and first gear 13 and cone pulley 7 are fixed in same pivot, drive first gear 13 and rotate together when cone pulley 7 rotates. Cone pulley 7 and cask 8 are through 14 mutual drive of rope, 14 one end winding of rope is on cone pulley 7, the other end winding is on cask 8, cone pulley 7 release rope 14 when 8 furling ropes of cask, 8 release ropes of cask 14 when 7 furling ropes of cone pulley 14, it is specific, in order to prevent that rope 14 from sliding, can set up the helicla flute on cone pulley 7 and cask 8, 14 and 8's action moment of cask equals the juncture of rope 14 and cask 8 to the distance of axis of revolution, and is same, 14 and 7's action moment of cone pulley equals the juncture of rope 14 and cone pulley 7 to the distance of axis of revolution. During the releasing and winding of the rope 14, the transmission ratio between the drum 8 and the cone pulley 7 is changed continuously because the radius of the cone pulley 7 at different positions is different, and the radius of the drum 8 at different positions is the same. Volute spiral spring 9 one end is connected cask 8, the other end is connected insulating insulation can 1, volute spiral spring 9 exerts an effect moment for cask 8, along with elastic release, volute spiral spring 9's moment constantly diminishes, and at volute spiral spring 9's moment constantly diminishes the in-process, rope 14 removes to the big one end of diameter from the little one end of cone pulley 7 diameter, the drive ratio between cask 8 and the cone pulley 7 constantly increases, reach laborsaving transmission effect between cask 8 and the cone pulley 7 promptly, compensate the effect that volute spiral spring 9's torsion diminishes, ensure that pressure disk 5 is invariable basically to the pressure of garrulous ice. Just at pressure disk 5's effect, the trash ice compresses tightly on mill 11 of storage bucket 4 below, mill 11 and rotating ring 10 are connected, rotating ring 10 rotates under actuating mechanism's drive, mill 11 rotates along with rotating ring 10's rotation, grind the trash ice, because pressure disk 5 is invariable basically to the pressure of trash ice, consequently the pressure that the trash ice received is invariable basically when grinding, the tiny ice crystal granule that makes the production of grinding is tiny even, the ice crystal of the tiny granule after the grinding falls out through-hole 36, form artificial snow, reach the effect of simulation snowfall weather. The ice crystals with tiny particles form a simulated simple snowing environment of artificial snow, large and expensive equipment such as a snowmaker is not needed, the structure is simple, and the cost is low. When the test box is used, the test box is matched with a refrigerating device for use, and the condition that the environment in the insulated heat insulation box 1 is lower than zero centigrade is ensured. Be equipped with the electrode bar 2 that the level was placed in insulating insulation can 1, 2 offsides of electrode bar are equipped with vertical plate electrode 3 of placing, avoid a large amount of artificial snow to fall on plate electrode 3, improve simulation effect.
Specifically, the driving mechanism comprises a motor 15 arranged on the charging bucket 4 and an outer gear ring 16 arranged on the rotating ring 10, a second gear 17 is arranged on an output shaft of the motor 15, and the second gear 17 is meshed with the outer gear ring 16. The motor 15 is installed on the charging bucket or the heat preservation box, a second gear 17 on an output shaft of the motor 15 is meshed with an outer gear ring 16 on the rotating ring 10, the rotating ring 10 is driven to rotate when the motor 15 rotates, and the grinding disc 11 on the rotating ring 10 rotates to grind crushed ice.
Specifically, the environment simulation system further comprises a water tank 18, a water pump 19 and a nozzle 20, wherein the nozzle 20 is arranged in the insulation heat preservation box 1, the water pump 19 is arranged in the water tank 18, and the water pump 19 is connected with the nozzle 20 through a pipeline. The water pump 19 pumps the water in the water tank 18 into the nozzle 20 through a pipeline, and the water is sprayed out of the nozzle 20, so that the environment in rainy days can be simulated, and the rain and snow weather can also be simulated.
Specifically, the storage bucket below is equipped with the device of shedding, the device of shedding includes air pump 21, back taper dustcoat 22, toper inner cover 23 and guide plate 24, and back taper dustcoat 22 upper end and lower extreme all are equipped with the opening, toper inner cover 23 only is equipped with the opening below, toper inner cover 23 cover is located in the back taper dustcoat 22, leave the clearance between toper inner cover 23 and the back taper dustcoat 22, guide plate 24 is located back taper dustcoat 22 bottom, be equipped with annular chamber 25 in the guide plate 24, annular chamber 25 is through annular seam 26 and guide plate 24 upper surface intercommunication, annular chamber 25 pass through trachea 27 with air pump 21 connects, annular seam 26 orientation in the middle of toper inner cover 23, guide plate 24 is used for following the centre of the gaseous direction toper inner cover 23 that annular seam 26 came out. Toper inner cover 23 cover is located in the back taper dustcoat 22, the artificial snow that falls down from the storage bucket falls into to leave the clearance between toper inner cover 23 and the back taper dustcoat 22 from the opening of back taper dustcoat 22 upper end, and back taper dustcoat 22 lower extreme is equipped with the opening, and the bottom of back taper dustcoat 22 is equipped with guide plate 24, and the artificial snow falls on guide plate 24, be equipped with annular chamber 25 in the guide plate 24, air pump 21 supplies high-pressure gas through trachea 27 in to annular chamber 25, and high-pressure gas from annular seam 26 blowout, guide plate 24 are used for following the centre of the gas direction toper inner cover 23 that annular seam 26 came out, annular seam 26 orientation in the middle of toper inner cover 23, high-speed spun gas collects the artificial snow and blows off in toper inner cover 23 below, slowly drops downwards at last for the artificial snow descends evenly.
Specifically, the top of the conical inner cover 23 is provided with a spherical cover 29, and the concave surface of the spherical cover 29 faces downwards. So that the artificial snow entering the conical inner cover 23 is uniformly thrown.
Specifically, the bottom of the insulated heat insulation box 1 is provided with a collection box 30, and a plastic film is laid in the collection box 30. The fallen artificial snow enters the collection box 30 and can be reused. The plastic film is arranged in the collecting box 30, and the collecting box 30 is convenient to take out after being frozen.
Optionally, the insulation heat preservation box 1 is arranged in the sealing box 32, the sealing box 32 is connected with the air pump 21, and a barometer 31 is arranged in the sealing box 32. The air in the sealed box 32 is pumped out by the air pump 21, the air pressure in the sealed box 32 and the insulated heat-preservation box 1 is reduced, and the corona discharge condition under the low-pressure environment on the plateau is simulated. The air pressure condition in the sealed box 32 and the insulated heat preservation box 1 can be seen by the air pressure gauge 31, so that the pressure can be conveniently adjusted.
Specifically, insulating insulation can 1 is equipped with mounting bracket 35, cone pulley 7, cask 8 and spiral spring 9 are installed through mounting bracket 35 on insulating insulation can 1. The installation and the fixation are convenient. The structure of mounting bracket 35 can be by many horizontal poles and montant constitution, and the montant is fixed on insulating insulation can 1, and the horizontal pole is fixed on the montant, installs cone pulley 7, cask 8 and volute spiral spring 9 on the horizontal pole.
Specifically, a guide rail 33 is arranged on the mounting frame 35, a sliding groove 34 is arranged on the push rod 6, and the sliding groove 34 slides along the guide rail 33. The push rod 6 can move up and down conveniently, and the pushing effect is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The corona test system for simulating the environment is characterized by comprising an insulating insulation box, wherein horizontally arranged electrode rods are arranged in the insulating insulation box, electrode plates which are vertically arranged are arranged on opposite sides of the electrode rods, an environment simulation system is arranged above the inside of the insulating insulation box and comprises a charging basket, a pressure plate, a push rod, a cone pulley, a barrel and a volute spiral spring, the charging basket is a barrel body with an upper opening and a lower opening, a rotating ring is arranged at the bottom of the charging basket, a grinding disc with a through hole is arranged in the rotating ring, the rotating ring is driven to rotate by a driving mechanism, the pressure plate is arranged in the charging basket, the pressure plate is connected with the push rod, the push rod is provided with a rack, the cone pulley and the barrel are rotatably arranged on the insulating insulation box, the cone pulley is provided with a first gear meshed with the rack, and the cone pulley and the barrel are mutually driven by a rope, one end of the volute spiral spring is connected with the barrel, and the other end of the volute spiral spring is connected with the insulating heat preservation box.
2. The corona test system according to claim 1, wherein the driving mechanism comprises a motor disposed on the charging barrel and an outer gear ring disposed on the rotating ring, the output shaft of the motor is provided with a second gear, and the second gear is engaged with the outer gear ring.
3. The corona test system according to claim 1, further comprising a water tank, a water pump and a nozzle, wherein the nozzle is disposed in the insulating thermal insulation box, the water pump is disposed in the water tank, and the water pump is connected to the nozzle through a pipe.
4. The corona test system according to claim 1, wherein a throwing device is arranged below the charging basket, the throwing device comprises an air pump, an inverted cone outer cover, an inner cone cover and a guide plate, openings are arranged at the upper end and the lower end of the inverted cone outer cover, the inner cone cover is only provided with the openings, the inner cone cover is sleeved in the inverted cone outer cover, a gap is reserved between the inner cone cover and the inverted cone outer cover, the guide plate is arranged at the bottom of the inverted cone outer cover, an annular cavity is arranged in the guide plate and is communicated with the upper surface of the guide plate through an annular seam, the annular cavity is connected with the air pump through an air pipe, the annular seam faces towards the middle of the inner cone cover, and the guide plate is used for guiding the air coming out from the annular seam to the middle of the inner cone cover.
5. The corona test system according to claim 4, wherein the conical inner cover is provided with a spherical cover at the top, and the concave surface of the spherical cover faces downwards.
6. The corona test system according to claim 1, wherein a collecting box is disposed at a bottom of the insulating insulation box, and a plastic film is disposed in the collecting box.
7. The corona test system according to claim 1, further comprising a seal box, wherein the insulation thermal insulation box is disposed in the seal box, the seal box is connected to the air pump, and a barometer is disposed in the seal box.
8. The corona test system according to claim 1, wherein said insulated cabinet has a mounting bracket, and said cone pulley, drum and volute spiral spring are mounted on said insulated cabinet through said mounting bracket.
9. The corona test system according to claim 8, wherein the mounting frame is provided with a guide rail, the push rod is provided with a sliding groove, and the sliding groove slides along the guide rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910317332.5A CN109975671B (en) | 2019-04-19 | 2019-04-19 | Corona test system for simulating environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910317332.5A CN109975671B (en) | 2019-04-19 | 2019-04-19 | Corona test system for simulating environment |
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| CN109975671A CN109975671A (en) | 2019-07-05 |
| CN109975671B true CN109975671B (en) | 2020-12-18 |
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| CN110441218A (en) * | 2019-08-30 | 2019-11-12 | 海南方能测试技术有限公司 | A kind of concrete permeable detection device and detection method |
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|---|---|---|---|---|
| JPH11150848A (en) * | 1997-11-13 | 1999-06-02 | Kureha Chem Ind Co Ltd | Resistant-to-snow piling ring |
| CN101126792A (en) * | 2007-01-31 | 2008-02-20 | 重庆大学 | Large scale multifunctional artificial climate room system for electrical test |
| CN101806850A (en) * | 2010-03-10 | 2010-08-18 | 中国电力科学研究院 | Climate environment simulation test method |
| CN102183714A (en) * | 2011-03-18 | 2011-09-14 | 国网电力科学研究院 | Wind device for icing simulating test of extra-high voltage insulator |
| CN204665780U (en) * | 2015-05-04 | 2015-09-23 | 上海佐竹冷热控制技术有限公司 | Indoor Simulation of Snowfall tuyere device |
-
2019
- 2019-04-19 CN CN201910317332.5A patent/CN109975671B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11150848A (en) * | 1997-11-13 | 1999-06-02 | Kureha Chem Ind Co Ltd | Resistant-to-snow piling ring |
| CN101126792A (en) * | 2007-01-31 | 2008-02-20 | 重庆大学 | Large scale multifunctional artificial climate room system for electrical test |
| CN101806850A (en) * | 2010-03-10 | 2010-08-18 | 中国电力科学研究院 | Climate environment simulation test method |
| CN102183714A (en) * | 2011-03-18 | 2011-09-14 | 国网电力科学研究院 | Wind device for icing simulating test of extra-high voltage insulator |
| CN204665780U (en) * | 2015-05-04 | 2015-09-23 | 上海佐竹冷热控制技术有限公司 | Indoor Simulation of Snowfall tuyere device |
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| Title |
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Effective date of registration: 20231215 Address after: No. 23 Hairuihou Road, Longhua District, Haikou City, Hainan Province, 571100 Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF HAINAN POWER GRID Co.,Ltd. Patentee after: Hainan Electric Power Industry Development Co.,Ltd. Address before: No.23, hairuihou Road, Longhua District, Haikou City, Hainan Province, 570100 Patentee before: ELECTRIC POWER RESEARCH INSTITUTE OF HAINAN POWER GRID Co.,Ltd. |
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