CN104348099A - Ground insulation repairing method and device for dry iron core reactor - Google Patents
Ground insulation repairing method and device for dry iron core reactor Download PDFInfo
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- CN104348099A CN104348099A CN201410609819.8A CN201410609819A CN104348099A CN 104348099 A CN104348099 A CN 104348099A CN 201410609819 A CN201410609819 A CN 201410609819A CN 104348099 A CN104348099 A CN 104348099A
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- reactor
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- shaped core
- dehumidifier
- iron core
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- 238000009413 insulation Methods 0.000 title claims abstract description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000012528 membrane Substances 0.000 claims description 31
- 238000000338 in vitro Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 11
- 230000008439 repair process Effects 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Particle Accelerators (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a ground insulation repairing method and a device for a dry iron core reactor. The method specifically comprises the following steps: (1) placing a dehumidifier on the periphery of a to-be-repaired dry iron core reactor; (2) covering the to-be-repaired dry iron core reactor and the dehumidifier into a sealed cover body; (3) respectively connecting an iron core ground lug and a metal base of the to-be-repaired dry iron core reactor by virtue of insulated cable leads, and leading out of the sealed cover body to be connected with an insulating-resistance meter; (4) starting the dehumidifier to dehumidify, and pumping moisture adsorbed on the to-be-repaired dry iron core reactor out of the sealed cover body; (5) monitoring a ground insulating resistance value of the to-be-repaired dry iron core reactor by virtue of the insulating-resistance meter, stopping dehumidifying until the ground insulating resistance value is greater than or equal to the set value, and finishing repairing. According to the ground insulation repairing method and device, the energy consumption can be greatly reduced; the ground insulation repairing device and device are short in dehumidifying time, high in efficiency, safe and reliable in dehumidifying process, and free of tracking by operating personnel; the repairing cycle is greatly shortened; manpower is saved; and the method and the device have good application prospects.
Description
Technical field
The present invention relates to a kind of reactor with T-shaped core insulation against ground restorative procedure, also relate to the device using the method.
Background technology
Reactor with T-shaped core have office put little, mechanical strength is high, volume is little, fire-retardant, safeguard less, leakage field is little, be applicable to the advantage of indoor location, be widely used in the fields such as power transmission and transformation system, electric railway, metallurgy, particularly installing space finite sum has the net place such as transformer station and underground substation, city of special fire protection requirement, more can give full play to little, the fire-retardant superiority of its volume.Withstand voltage test examination is carried out or before putting into operation at reactor with T-shaped core, due to indoor environment or the underground space moister, the insulating resistance value of reactor with T-shaped core can obviously decline, sometimes every 1000V rated voltage, its insulating resistance value is less than 2M Ω, and the insulating resistance value of reactor with T-shaped core operation minimum requirements is that insulation against ground resistance value is not less than 2M Ω.Even more serious situation is, when reactor suffers abnormal moist generation dew condensation phenomenon, insulation resistance also can level off to zero.
In order to repair reactor with T-shaped core insulation against ground, usually adopt following two kinds of methods at present:
A kind of method transfers in special heating furnace by whole reactor, according to certain heating curve to reactor heat temperature raising, the moisture in insulating material evaporated away.The defect of the method is: (1) need the special equipments such as lifting transhipment, heating furnace, and need to heat whole reactor, heating does not have selectivity, consumes comparatively multi-energy; (2) transfer reactance device process is longer, and heating curve comprises several constant temperature and keeps the period, and accumulating time 12 hours or more, causes repairing efficiency long.
Another kind method is checked and accepted or installation in position scene at reactor, utilizes thermal radiation principle of heating, be arranged in around reactor, carry out Baking out after energising to reactor by warmer or high-power heating lamp tube, to drive away the moisture in insulating material.The method has following shortcoming: (1) every platform reactor need adopt 6 ~ 10 power to be the warmer of about 1000W or high-power heating lamp tube, and total heating power is high; (2) the environment space residing for reactor is comparatively large, and heat is low to the directional heat conversion efficiency of reactor from warmer or high-power heating lamp tube, and reactor heats up slow, and effect is poor; (3) heating process needs personnel's carefulness to follow the tracks of, and carries out safety measure, with fire-proof, causes and expend more manpower.
Summary of the invention
First object of the present invention is to provide that a kind of energy consumption is low, repairing efficiency is short, can improve the reactor with T-shaped core insulation against ground restorative procedure of safety and reliability.
Second object of the present invention is to provide a kind of device using said method.
First object of the present invention is realized by following technical scheme: a kind of reactor with T-shaped core insulation against ground restorative procedure, is characterized in that specifically comprising the following steps:
(1) place dehumidifier at the periphery of reactor with T-shaped core to be repaired;
(2) reactor with T-shaped core to be repaired and dehumidifier all being covered draws together in an airtight cover body;
(3) use insulated cable lead-in wire to connect iron core grounding sheet and the metab of reactor with T-shaped core to be repaired respectively, and cause enclosed hood Ligation in vitro insulating-resistance meter;
(4) open dehumidifier and carry out dehumidifier, the moisture be adsorbed on reactor with T-shaped core to be repaired is evacuated to enclosed hood external;
(5) use insulating-resistance meter to monitor the insulation against ground resistance value of reactor with T-shaped core to be repaired, until when insulation against ground resistance value is more than or equal to set point, stops dehumidifier, complete reparation.
Repair process of the present invention is without the need to transporting reactor with T-shaped core, and also without the need to using high-power thermal source, energy consumption reduces greatly, and the dehumidifier time is short, and efficiency is high, significantly can shorten repairing efficiency.In addition, dehumidifier process safety and reliable, does not need operating personnel to follow the tracks of, has saved manpower, had a good application prospect.
As a kind of preferred implementation of the present invention, described step (2) in, reactor with T-shaped core to be repaired and dehumidifier are all covered and draw together in the transparent membrane cover of a lower ending opening, described airtight cover body is formed at the bottom of tightening transparent membrane cover.The convenient dehumidifier situation of observing in transparent membrane cover of transparent membrane cover, and facilitate folding, use transport very convenient.
The present invention described step (3) in, use insulated cable lead-in wire connect reactor with T-shaped core to be repaired iron core grounding sheet before, first the iron core grounding sheet of reactor with T-shaped core to be repaired and folder tie point are unclamped.
As a modification of the present invention, described step (2) in, transparent membrane cover is erected on the iron yoke at reactor with T-shaped core top to be repaired by its inner top surface of liftable support jack-up.
Second object of the present invention is realized by following technical scheme: a kind of device using above-mentioned reactor with T-shaped core insulation against ground restorative procedure, it is characterized in that: it comprises airtight cover body, dehumidifier, insulated cable lead-in wire and insulating-resistance meter, described dehumidifier is arranged on the periphery of reactor with T-shaped core to be repaired, reactor with T-shaped core to be repaired drawn together by described airtight cover body cover and dehumidifier makes the two be in a confined space, described insulated cable lead-in wire connects iron core grounding sheet and the metab of reactor with T-shaped core respectively, and cause enclosed hood Ligation in vitro insulating-resistance meter.
As a modification of the present invention, described airtight cover body is formed after adopting the transparent membrane cover of lower ending opening to tighten its underpart by stretch cord.
As a modification of the present invention, described device also comprises liftable support, described liftable support forms primarily of supporting plate, telescopic crane and magnet sucking disc, the upper end of described crane connects supporting plate, the lower end of described crane and magnet sucking disc suck fixing, described supporting plate jacking is on the inner top surface of transparent membrane cover, and described magnet sucking disc is adsorbed on the iron yoke at reactor with T-shaped core top to be repaired.By regulating crane by bracket adjustment to proper height during use, gathering support of finishing using, is convenient for carrying, stores.Liftable support is fixed by magnet suction and reactor with T-shaped core, has reusable and does not damage function unshakable in one's determination.
In order to realize the automatic control of repair process, as a further improvement on the present invention, described device also comprises controller, the panel of described controller is provided with for showing the LED display of actual measurement insulation against ground resistance value and the operation push-button for keying in set point, the signal input part of the A/D converter of controller is connected with the signal output part of insulating-resistance meter, the relay output end of controller is connected with window air conditioner electromechanical source, the insulation against ground resistance value of measured reactor with T-shaped core to be repaired is sent to controller by insulating-resistance meter, when controller judges that this insulation against ground resistance value is more than or equal to set point, the power supply cutting off dehumidifier is exported by relay, dehumidifier is quit work.
Transparent membrane cover of the present invention is rectangle three-dimensional container, and the end face of transparent membrane cover and sidewall are respectively apart from reactor with T-shaped core 1.0 ~ 2.0 meters to be repaired.
Set point of the present invention is 1.2 ~ 1.3 times of examination value, and described examination value is 100 ~ 300M Ω.
Compared with prior art, the present invention has following significant effect:
(1) the present invention overlaps a transparent membrane cover for reactor with T-shaped core product to be repaired at the scene, utilize dehumidifier dehumidifier, and keep, the moisture be adsorbed on reactor with T-shaped core insulating material to be repaired is constantly evaporated and discharges through air conditioner, product insulation against ground is repaired, whole repair process is without the need to transporting reactor with T-shaped core, and also without the need to using high-power thermal source, energy consumption reduces greatly, and, the dehumidifier time is short, and efficiency is high, significantly can shorten repairing efficiency.
(2) dehumidifier process safety of the present invention and reliable, does not need operating personnel's carefulness to follow the tracks of, has saved manpower.
(3) the dehumidifier situation in transparent membrane cover handled easily personal observations cover of the present invention, and facilitate folding, use transport very convenient.
(4) apparatus of the present invention structure is simple, practical, has a good application prospect.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the structural representation of the present invention when working;
Fig. 2 is the structural representation of liftable support of the present invention;
Fig. 3 is controller architecture block diagram of the present invention.
Embodiment
As shown in Figure 1, 2, be a kind of reactor with T-shaped core insulation against ground of the present invention restorative procedure, specifically comprise the following steps:
(1) place dehumidifier 2 at the periphery of reactor with T-shaped core 1 to be repaired, the quantity of dehumidifier 2 can adjust according to the volume size of reactor with T-shaped core to be repaired and particular location, in the present embodiment, respectively place 2 dehumidifiers 2 at the front and back position of reactor with T-shaped core 1 to be repaired, amount to 4;
(2) reactor with T-shaped core 1 to be repaired and dehumidifier 2 all being covered draws together in an airtight cover body; In the present embodiment, reactor with T-shaped core 1 to be repaired and dehumidifier 2 all being covered draws together in the transparent membrane cover 3 of a lower ending opening, transparent membrane cover 3 is chosen according to reactor with T-shaped core overall dimension to be repaired, the end face of transparent membrane cover and sidewall are 1.0 ~ 2.0 meters apart from reactor with T-shaped core 1 to be repaired respectively, specifically transparent membrane cover 3 is erected on the iron yoke at reactor with T-shaped core 1 top to be repaired by its inner top surface of liftable support jack-up, and airtight cover body is formed at the bottom of tightening transparent membrane cover 3.The convenient dehumidifier situation of observing in transparent membrane cover of transparent membrane cover, and facilitate folding, use transport very convenient.This process should be noted outside insulated cable lead-in wire 6 non-links and dehumidifier 2 power line pull-out transparent membrane cover 3, facilitates later stage wiring.
(3) the iron core grounding sheet of reactor with T-shaped core 1 to be repaired and folder tie point are unclamped, using 2 to thoroughly do away with edge cable tail 6 connects on the iron core grounding sheet of reactor with T-shaped core to be repaired and the earth stud of metab respectively, and causing enclosed hood Ligation in vitro insulating-resistance meter 5, insulating-resistance meter 5 is digital insulation resistance meter;
(4) start after dehumidifier 2 power line is connected to 220V power supply, carry out dehumidifier, the moisture be adsorbed on reactor with T-shaped core 1 to be repaired is evacuated to enclosed hood external; Reduce air humidity particular by continuous dehumidifier, hydrone, is so moved in circles to the continuous free diffusing of dry air by reactor with T-shaped core insulating part to be repaired, and keep certain hour, insulating part is gradually dry.
(5) after reparation a period of time, use insulating-resistance meter 5 to monitor the insulation against ground resistance value of reactor with T-shaped core 1 to be repaired, until when insulation against ground resistance value is more than or equal to set point, stop dehumidifier, complete reparation, the set point in the present embodiment is 130M Ω.
A kind of device using above-mentioned reactor with T-shaped core insulation against ground restorative procedure, it comprises airtight cover body, dehumidifier 2, insulated cable lead-in wire 6, insulating-resistance meter 5, liftable support 8 and controller 9, dehumidifier 2 is arranged on the periphery of reactor with T-shaped core 1 to be repaired, reactor with T-shaped core 1 to be repaired drawn together by airtight cover body cover and dehumidifier 2 makes the two be in a confined space, edge cable tail 6 connects iron core grounding sheet and the metab of reactor with T-shaped core 1 to be repaired respectively, and causes enclosed hood Ligation in vitro insulating-resistance meter 5.Airtight cover body is formed after adopting the transparent membrane cover 3 of lower ending opening to tighten its underpart by stretch cord 7, and transparent membrane cover is rectangle three-dimensional container, and the end face of transparent membrane cover and sidewall are 1.0 ~ 2.0 meters apart from reactor with T-shaped core 1 to be repaired respectively.Liftable support 8 forms primarily of supporting plate 81, telescopic crane 82 and magnet sucking disc 83, the upper end of crane 82 connects supporting plate 81, lower end and the magnet sucking disc 83 of crane 82 suck fixing, supporting plate 81 jacking is on the inner top surface of transparent membrane cover 3, and magnet sucking disc 83 is adsorbed on the iron yoke at reactor with T-shaped core 1 top to be repaired.By regulating crane by bracket adjustment to proper height during use, gathering support of finishing using, is convenient for carrying, stores.
As shown in Figure 3, the panel of controller 9 is provided with for showing the LED display of actual measurement insulation against ground resistance value and the operation push-button for keying in set point, controller adopts AT89C2051 chip, the signal input part of the A/D converter of controller is connected with the signal output part of insulating-resistance meter, the relay output end of controller is connected with window air conditioner electromechanical source, the insulation against ground resistance value of measured reactor with T-shaped core to be repaired 1 is sent to controller 9 by insulating-resistance meter, if controller 9 judges that insulation against ground resistance value is less than 130M Ω, dehumidifier 2 dehumidifier work proceeds, if when controller 9 judges that insulation against ground resistance value is more than or equal to 130M Ω, namely it is qualified that reactor with T-shaped core 1 insulation against ground resistance value to be repaired meets, the power supply cutting off dehumidifier 2 is exported by relay, dehumidifier 2 is quit work, completes the repair to reactor with T-shaped core 1 to be repaired.
Embodiments of the present invention are not limited thereto, and according to foregoing of the present invention, according to ordinary skill knowledge and customary means, set point of the present invention is 1.2 ~ 1.3 times of examination value, and examination value is 100 ~ 300M Ω; The quantity of liftable support can adjust according to the volume size of transparent membrane cover; Therefore, do not departing under the present invention's above-mentioned basic fundamental thought prerequisite, the present invention can make the amendment of other various ways, replacement or change, all drops within rights protection scope of the present invention.
Claims (10)
1. a reactor with T-shaped core insulation against ground restorative procedure, is characterized in that specifically comprising the following steps:
(1) place dehumidifier at the periphery of reactor with T-shaped core to be repaired;
(2) reactor with T-shaped core to be repaired and dehumidifier all being covered draws together in an airtight cover body;
(3) use insulated cable lead-in wire to connect iron core grounding sheet and the metab of reactor with T-shaped core to be repaired respectively, and cause enclosed hood Ligation in vitro insulating-resistance meter;
(4) open dehumidifier and carry out dehumidifier, the moisture be adsorbed on reactor with T-shaped core to be repaired is evacuated to enclosed hood external;
(5) use insulating-resistance meter to monitor the insulation against ground resistance value of reactor with T-shaped core to be repaired, until when insulation against ground resistance value is more than or equal to set point, stops dehumidifier, complete reparation.
2. reactor with T-shaped core insulation against ground restorative procedure according to claim 1, it is characterized in that: described step (2) in, reactor with T-shaped core to be repaired and dehumidifier are all covered and draw together in the transparent membrane cover of a lower ending opening, described airtight cover body is formed at the bottom of tightening transparent membrane cover.
3. reactor with T-shaped core insulation against ground restorative procedure according to claim 2, it is characterized in that: described step (3) in, before the iron core grounding sheet using insulated cable lead-in wire connection reactor with T-shaped core to be repaired, first the iron core grounding sheet of reactor with T-shaped core to be repaired and folder tie point are unclamped.
4. reactor with T-shaped core insulation against ground restorative procedure according to claim 3, it is characterized in that: described step (2) in, transparent membrane cover is erected on the iron yoke at reactor with T-shaped core top to be repaired by liftable its inner top surface of support jack-up.
5. one kind uses the device of reactor with T-shaped core insulation against ground restorative procedure described in claim 1, it is characterized in that: it comprises airtight cover body, dehumidifier, insulated cable lead-in wire and insulating-resistance meter, described dehumidifier is arranged on the periphery of reactor with T-shaped core to be repaired, reactor with T-shaped core to be repaired drawn together by described airtight cover body cover and dehumidifier makes the two be in a confined space, described insulated cable lead-in wire connects iron core grounding sheet and the metab of reactor with T-shaped core to be repaired respectively, and causes enclosed hood Ligation in vitro insulating-resistance meter.
6. device according to claim 5, is characterized in that: described airtight cover body is formed after adopting the transparent membrane cover of lower ending opening to tighten its underpart by stretch cord.
7. device according to claim 6, it is characterized in that: described device also comprises liftable support, described liftable support forms primarily of supporting plate, telescopic crane and magnet sucking disc, the upper end of described crane connects supporting plate, the lower end of described crane and magnet sucking disc suck fixing, described supporting plate jacking is on the inner top surface of transparent membrane cover, and described magnet sucking disc is adsorbed on the iron yoke at reactor with T-shaped core top to be repaired.
8. device according to claim 7, it is characterized in that: described device also comprises controller, the panel of described controller is provided with for showing the LED display of actual measurement insulation against ground resistance value and the operation push-button for keying in set point, the signal input part of the A/D converter of controller is connected with the signal output part of insulating-resistance meter, the relay output end of controller is connected with window air conditioner electromechanical source, the insulation against ground resistance value of measured reactor with T-shaped core to be repaired is sent to controller by insulating-resistance meter, when controller judges that this insulation against ground resistance value is more than or equal to set point, the power supply cutting off dehumidifier is exported by relay, dehumidifier is quit work.
9. device according to claim 8, is characterized in that: described set point is 1.2 ~ 1.3 times of examination value, and described examination value is 100 ~ 300M Ω.
10. device according to claim 9, is characterized in that: described transparent membrane cover is rectangle three-dimensional container, and the end face of transparent membrane cover and sidewall are respectively apart from reactor with T-shaped core 1.0 ~ 2.0 meters to be repaired.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609819.8A CN104348099B (en) | 2014-10-31 | 2014-10-31 | A kind of reactor with T-shaped core insulation against ground restorative procedure and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410609819.8A CN104348099B (en) | 2014-10-31 | 2014-10-31 | A kind of reactor with T-shaped core insulation against ground restorative procedure and device |
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| Publication Number | Publication Date |
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| CN104348099A true CN104348099A (en) | 2015-02-11 |
| CN104348099B CN104348099B (en) | 2016-10-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202154A (en) * | 2006-12-15 | 2008-06-18 | 陈欢 | Method for reconditioning power transformer oil |
| JP2012115096A (en) * | 2010-11-26 | 2012-06-14 | Chubu Electric Power Co Inc | Insulation gas sealing method |
| CN203300378U (en) * | 2013-05-15 | 2013-11-20 | 山西太钢不锈钢股份有限公司 | Electric reactor coil clearance forced air cooling device |
| CN103837774A (en) * | 2014-03-14 | 2014-06-04 | 云南电力试验研究院（集团）有限公司电力研究院 | Dry type air reactor monitoring device based on SVM |
| CN204216453U (en) * | 2014-10-31 | 2015-03-18 | 广东电网有限责任公司电力科学研究院 | A kind of reactor with T-shaped core insulation against ground prosthetic device |
-
2014
- 2014-10-31 CN CN201410609819.8A patent/CN104348099B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101202154A (en) * | 2006-12-15 | 2008-06-18 | 陈欢 | Method for reconditioning power transformer oil |
| JP2012115096A (en) * | 2010-11-26 | 2012-06-14 | Chubu Electric Power Co Inc | Insulation gas sealing method |
| CN203300378U (en) * | 2013-05-15 | 2013-11-20 | 山西太钢不锈钢股份有限公司 | Electric reactor coil clearance forced air cooling device |
| CN103837774A (en) * | 2014-03-14 | 2014-06-04 | 云南电力试验研究院（集团）有限公司电力研究院 | Dry type air reactor monitoring device based on SVM |
| CN204216453U (en) * | 2014-10-31 | 2015-03-18 | 广东电网有限责任公司电力科学研究院 | A kind of reactor with T-shaped core insulation against ground prosthetic device |
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| CN104348099B (en) | 2016-10-26 |
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Effective date of registration: 20150126 Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Applicant after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Applicant after: Pearl Electric Co., Ltd. Address before: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Applicant before: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. |
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Effective date of registration: 20200805 Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Patentee after: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. Address before: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Co-patentee before: PEARL ELECTRIC Co.,Ltd. Patentee before: Electric Power Research Institute of Guangdong Power Grid Co.,Ltd. |