CN112821268A - 220KV mobile load transfer device with rotatable sleeve - Google Patents
220KV mobile load transfer device with rotatable sleeve Download PDFInfo
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- CN112821268A CN112821268A CN202110168383.3A CN202110168383A CN112821268A CN 112821268 A CN112821268 A CN 112821268A CN 202110168383 A CN202110168383 A CN 202110168383A CN 112821268 A CN112821268 A CN 112821268A
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- air chamber
- load transfer
- transfer device
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- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims description 22
- 239000012212 insulator Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 description 3
- VMQPMGHYRISRHO-UHFFFAOYSA-N benzvalene Chemical group C1=CC2C3C1C32 VMQPMGHYRISRHO-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
- H02B5/06—Non-enclosed substations; Substations with enclosed and non-enclosed equipment gas-insulated
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a 220KV movable load transfer device with a rotatable sleeve, which comprises a vehicle body, wherein a cargo platform is horizontally and fixedly arranged on the top surface of the vehicle body, a breaker air chamber is horizontally arranged above the vehicle body, the bottom end of the breaker air chamber is fixedly connected with the top surface of the cargo platform through a fixing frame, and a breaker mechanism box is vertically arranged on one side of the breaker air chamber. Compared with the field installation and construction temporary intervals of scattered electrical equipment, the 220KV movable load transfer device with the rotatable sleeve realizes the installation and debugging in a factory, can realize the integral access to the original transformer substation system only by simple primary wiring and secondary access on the field, realizes the load transfer and improves the field working efficiency; by adopting the sleeve rotating connection structure, the integral transportation of the sleeve and the body is realized, the field installation of the sleeve is avoided, the integral size is lower than the requirement of limiting the transportation height, and the convenience of field use of the device is improved. The method is suitable for the transformer substation.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a 220KV movable load transfer device with a rotatable sleeve.
Background
The work of 220KV bus side isolating switch and PT maintenance of the transformer substation, old transformer substation bus transformation and the like needs bus power failure, which causes the risk of full stop of the transformer substation, leads to interruption of power supply to subordinate loads, and often needs to take load transfer measures for ensuring uninterrupted power supply to important users during maintenance or transformation of the equipment. If the traditional transfer mode of constructing temporary intervals by using dispersed equipment is adopted, not only the equipment needs to be installed and adjusted on site, but also part of the equipment needs to be assembled on site, such as conventional GIS or PASS, and the sleeve and the body need to be transported separately and assembled on site due to the limitation of transportation. The conventional transfer supply mode has the defects of large field engineering quantity, long construction time, high construction risk and the like, so that a 220KV movable load transfer supply device with a rotatable sleeve is needed. The device can effectively guarantee that the sleeve pipe is rotated under the condition that gas is not leaked and the electrical connection is good, the requirements of integral input and integral exit can be met when the rotary supply device is used, and the sleeve pipe does not need to be installed and detached on site.
Disclosure of Invention
The invention aims to provide a 220KV movable load transfer device with a rotatable sleeve, which supplies power to a 220KV main transformer of a transformer substation. The device can effectively guarantee that the sleeve pipe is rotated under the condition that gas is not leaked and the electrical connection is good, can be wholly input and wholly withdraw from when satisfying the use of the rotary supply device, does not need on-site installation and disassembly of the sleeve pipe, and solves the problems provided in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a KV movable load transfer device with a rotatable sleeve comprises a vehicle body, wherein a cargo platform is horizontally and fixedly arranged on the top surface of the vehicle body, a breaker air chamber is horizontally arranged above the vehicle body, the bottom end of the breaker air chamber is fixedly connected with the top surface of the cargo platform through a fixing frame, a breaker mechanism box is vertically arranged on one side of the breaker air chamber, the bottom surface of the breaker mechanism box is fixedly connected with the top surface of the cargo platform, one end of the breaker mechanism box is communicated with the inside of the breaker air chamber, a current transformer chamber is vertically arranged above the breaker air chamber, the bottom end of the current transformer chamber is communicated with the top end of the breaker air chamber, a three-station isolation grounding switch air chamber is horizontally arranged above the current transformer chamber, the bottom end of the three-station isolation grounding switch air chamber is communicated with the top, the bottom end of the voltage transformer air chamber is fixedly connected with the top surface of the cargo platform through a hydraulic lifting rod, an SF6 inflation sleeve is arranged above the voltage transformer air chamber, the SF6 inflation sleeve is communicated with the current transformer chamber through a rotary connection structure, and the bottom surface of the rotary connection structure is communicated with the top surface of the voltage transformer air chamber.
Preferably, the vertical telescopic support leg that is provided with in automobile body below, telescopic support leg top and automobile body bottom surface fixed connection, telescopic support leg is six, six telescopic support leg evenly sets up in the automobile body bottom.
Preferably, the telescopic support legs are mechanical hydraulic support legs, and the vehicle body is a high-low plate semitrailer.
Preferably, the number of the current transformer chambers is three, the three current transformer chambers are located on the same horizontal plane and are arranged in the front-back direction, the number of the voltage transformer air chambers is three, and the three voltage transformer air chambers are located on the same horizontal plane and are arranged in the front-back direction.
Preferably, the swivelling joint structure includes rotating flange, mounting flange, flange snap ring, sealing washer one, bolt two, guide ring, gyro wheel, sealing washer two, benzvalene form insulator and ring gear, bolt one runs through mounting flange, benzvalene form insulator, flange and rotating flange from the right side in proper order, the flange snap ring is located rotating flange and flange top, flange snap ring inner wall and rotating flange left surface and flange right flank contact, the gear ring is fixed to be set up in the rotating flange heavy platform, the guide ring is inlayed and is set up between rotating flange bottom surface and flange top surface.
Preferably, the bottom end of the air chamber of the voltage transformer is fixedly connected with the top end of an output rod of the hydraulic lifting rod, and the bottom surface of the hydraulic lifting rod is fixedly connected with the top surface of the cargo platform.
Preferably, one surface of the bolt is in threaded connection with the inner wall of the fixed flange, the inner wall of the basin-type insulator, the inner wall of the transition flange and the inner wall of the rotating flange.
Preferably, the second bolt horizontal setting is on the flange snap ring right side, the second bolt left end runs through flange snap ring and transition flange internal thread connection, the gyro wheel rotates and sets up the inside left surface at the flange snap ring, the gyro wheel side contacts with rotatory flange left surface.
Preferably, the first sealing ring is embedded on the lap joint surface of the basin-type insulator and the fixed flange, and the second sealing ring is embedded on the lap joint surface of the rotary flange and the transition flange.
Preferably, the fixed arrester bearing structure that is provided with of automobile body top surface, the arrester bearing structure top is run through and is provided with the arrester, the fixed control cabinet that converges that is provided with of automobile body top surface, voltage transformer air chamber one side is provided with the gaseous collection box of SF6, the gaseous collection box of SF6 adopts bolt and cargo platform top surface fixed connection.
Compared with the prior art, the invention has the beneficial effects that: compared with the field installation and construction temporary intervals of scattered electrical equipment, the 220KV movable load transfer device with the rotatable sleeve realizes the installation and debugging in a factory, can realize the integral access to the original transformer substation system only by simple primary wiring and secondary access on the field, realizes the load transfer and improves the field working efficiency; by adopting the sleeve rotating connection structure, the integral transportation of the sleeve and the body is realized, the field installation of the sleeve is avoided, the integral size is lower than the requirement of limiting the transportation height, and the convenience of field use of the device is improved.
Drawings
FIG. 1 is a front structural view illustrating the overall operation of the present invention;
FIG. 2 is a schematic front view of the overall transportation state of the present invention;
FIG. 3 is a schematic top view of the rotatable sleeve of the present invention;
fig. 4 is a front sectional view of the rotary joint structure of the present invention.
In the figure: the device comprises a vehicle body 1, a telescopic supporting leg 2, a breaker air chamber 3, a current transformer chamber 4, a three-station isolation grounding switch air chamber 5, a voltage transformer air chamber 6, a breaker mechanism box 7, an 8SF6 inflation sleeve, a 9 rotary connection structure, a 10 control collection cabinet, a 11 lightning arrester, a 12 lightning arrester supporting structure, a 13 SF6 gas recovery box, a 14 rotary flange, a 15 transition flange, a 16 fixed flange, a 17 flange snap ring, a 18 sealing ring I, a 19 bolt I, a 20 bolt II, a 21 guide ring, a 22 roller, a 23 sealing ring II, a 24 basin-type insulator and a 25 gear ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a220 KV movable load transfer device with a rotatable sleeve comprises a vehicle body 1, wherein a cargo platform is horizontally and fixedly arranged on the top surface of the vehicle body 1, telescopic support legs 2 are vertically arranged below the vehicle body 1, the top ends of the telescopic support legs 2 are fixedly connected with the bottom surface of the vehicle body 1, six telescopic support legs 2 are provided, the six telescopic support legs 2 are uniformly arranged at the bottom of the vehicle body 1, the telescopic support legs 2 are mechanical hydraulic support legs, the vehicle body 1 is a high-low plate semitrailer, a breaker air chamber 3 is horizontally arranged above the vehicle body 1, the bottom end of the breaker air chamber 3 is fixedly connected with the top surface of the cargo platform through a fixing frame, a breaker mechanism box 7 is vertically arranged on one side of the breaker air chamber 3, the bottom surface of the breaker mechanism box 7 is fixedly connected with the top surface of the cargo platform, three current transformer chambers 4 are arranged in the same horizontal plane and arranged in the front and back, the bottom ends of the current transformer chambers 4 are communicated with the top end of a breaker air chamber 3, three voltage transformer air chambers 6 are vertically arranged on the left side of the breaker air chamber 3, three voltage transformer air chambers 6 are arranged in the same horizontal plane and arranged in the front and back, the bottom end of the voltage transformer air chamber 6 is fixedly connected with the top surface of a cargo platform through a hydraulic lifting rod, the bottom end of the voltage transformer air chamber 6 is fixedly connected with the top end of an output rod of the hydraulic lifting rod, the bottom surface of the hydraulic lifting rod is fixedly connected with the top surface of the cargo platform, and an SF6 inflating sleeve 8 is arranged above the voltage transformer air chamber 6, the integral transportation of the sleeve and the body is realized by adopting a sleeve rotary connection structure, the sleeve is prevented from being installed on site, the integral size is lower than the requirement of the limitation of the transportation height, and the convenience of the field use of the device is improved, the SF6 gas-filled sleeve 8 is respectively communicated with the current transformer chamber 4 through the rotary connection structure 9, the bottom surface of the rotary connection structure 9 is communicated with the top surface of the voltage transformer gas chamber 6, the rotary connection structure 9 comprises a rotary flange 14, a transition flange 15, a fixed flange 16, a flange snap ring 17, a first sealing ring 18, a first bolt 19, a second bolt 20, a guide ring 21, a roller 22, a second sealing ring 23, a basin-type insulator 24 and a gear ring 25, the first bolt 19 sequentially penetrates through the fixed flange 16, the basin-type insulator 24, the transition flange 15 and the rotary flange 14 from right to left, the surface of the first bolt 19 and the, The inner wall of a transition flange 15 is in threaded connection with the inner wall of a rotating flange 14, a flange snap ring 17 is positioned above the rotating flange 14 and the transition flange 15, the inner wall of the flange snap ring 17 is in contact with the left side surface of the rotating flange 14 and the right side surface of the transition flange 15, a second bolt 20 is horizontally arranged on the right side of the flange snap ring 17, the left end of the second bolt 20 penetrates through the flange snap ring 17 to be in threaded connection with the inside of the transition flange 15, a roller 22 is rotatably arranged on the left side surface inside the flange snap ring 17, the side surface of the roller 22 is in contact with the left side surface of the rotating flange 14, a first sealing ring 18 is embedded on the lapping surface of a basin-type insulator 24 and a fixed flange 16, a second sealing ring 23 is embedded on the lapping surface of the rotating flange 14 and the transition flange 15, a gear ring 25 is fixedly arranged in a sink of the rotating flange 14, the lightning arrester 11 is arranged on the top end of the lightning arrester supporting structure 12 in a penetrating mode, the control cubicle 10 is fixedly arranged on the top surface of the vehicle body 1, the SF6 gas recovery box 13 is fixedly connected with the top surface of the cargo platform through bolts, temporary intervals are built for on-site installation and construction of scattered electrical equipment, installation and debugging in a factory are achieved through the device, the whole original substation system can be connected in a whole only through simple primary wiring and secondary connection on the site, load transfer is achieved, and the on-site working efficiency is improved.
When in use, the embodiment of converting the operation state into the transportation state is as follows: primary and secondary wiring is disassembled, and the primary wiring comprises a lightning arrester 11, an overhead incoming line, primary wiring between a transformer and a combined electrical appliance, and secondary wiring between a control cubicle 10 and a comprehensive automatic system of a transformer substation and an alternating current/direct current power supply. SF6 gas recovery unit 13 retrieves combination electric interior SF6 gas, is in micro-positive pressure state 0.02 ~ 0.05MPa to combination electric, and the sleeve pipe is rotatory to the state down through swivelling joint structure 19, specifically is: firstly, mounting a flange snap ring 17 to fix the rotating flange 14 and the transition flange 15, and then dismounting a bolt 19 penetrating through the fixing flange 16, the transition flange 15, the rotating flange 14 and the basin-type insulator 24. And then a forward and reverse rotating motor with a gear is used for driving a gear ring 25 on a sinking platform of the rotating flange 14, the sleeve A rotates 120 degrees clockwise, the sleeve B rotates 180 degrees clockwise or counterclockwise, the sleeve C rotates 120 degrees counterclockwise, an electromagnetic brake valve brakes after the sleeve A rotates to the position, the motor stops rotating, a first bolt 19 penetrating through the fixing flange 16, the transition flange 15, the rotating flange 14 and the basin-type insulator 24 is installed and fastened, and the flange snap ring 17 is detached, so that the transportation state is converted.
The transportation state and transit state implementation scheme is as follows: and adjusting the telescopic supporting legs 2 to keep the device in a balanced and stable state. The sleeve pipe is rotated to the state of facing up through swivelling joint structure 9, and concrete operation flow and running state conversion transportation state are unanimous, but the rotation direction is: the phase A sleeve rotates 120 degrees anticlockwise, the phase B sleeve rotates 180 degrees clockwise or anticlockwise, and the phase C sleeve rotates 120 degrees clockwise.
In summary, the following results can be obtained: compared with the field installation and construction temporary intervals of scattered electrical equipment, the 220KV movable load transfer device with the rotatable sleeve realizes the installation and debugging in a factory, can realize the integral access to the original transformer substation system only by simple primary wiring and secondary access on the field, realizes the load transfer and improves the field working efficiency; by adopting the sleeve rotating connection structure, the integral transportation of the sleeve and the body is realized, the field installation of the sleeve is avoided, the integral size is lower than the requirement of limiting the transportation height, and the convenience of field use of the device is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a portable load of 220KV that sleeve pipe is rotatable changes confession device, includes automobile body (1), its characterized in that: the top surface of the trolley body (1) is horizontally and fixedly provided with a cargo carrying platform, a breaker air chamber (3) is horizontally arranged above the trolley body (1), the bottom end of the breaker air chamber (3) is fixedly connected with the top surface of the cargo carrying platform through a fixing frame, one side of the breaker air chamber (3) is vertically provided with a breaker mechanism box (7), the bottom surface of the breaker mechanism box (7) is fixedly connected with the top surface of the cargo carrying platform, one end of the breaker mechanism box (7) is communicated with the interior of the breaker air chamber (3), a current transformer chamber (4) is vertically arranged above the breaker air chamber (3), the bottom end of the current transformer chamber (4) is communicated with the top end of the breaker air chamber (3), a three-station isolation grounding switch air chamber (5) is horizontally arranged above the current transformer chamber (4), the bottom end of the three-station isolation grounding switch air chamber (5, breaker air chamber (3) one side is vertical to be provided with voltage transformer air chamber (6), voltage transformer air chamber (6) bottom is through hydraulic lifting rod and cargo platform top surface fixed connection, voltage transformer air chamber (6) top is provided with SF6 and aerifys sleeve pipe (8), SF6 aerifys sleeve pipe (8) and link up the setting through swivelling joint structure (9) and current transformer room (4), swivelling joint structure (9) bottom surface link up the setting with voltage transformer air chamber (6) top surface.
2. The mobile 220KV load transfer device with rotatable bushing according to claim 1, wherein: automobile body (1) below is vertical to be provided with telescopic support leg (2), telescopic support leg (2) top and automobile body (1) bottom surface fixed connection, telescopic support leg (2) are six, six telescopic support leg (2) evenly set up in automobile body (1) bottom.
3. The mobile 220KV load transfer device with rotatable bushing according to claim 2, wherein: the telescopic support legs (2) are mechanical hydraulic support legs, and the vehicle body (1) is a high-low plate semitrailer.
4. The mobile 220KV load transfer device with rotatable bushing according to claim 1, wherein: the current transformer chambers (4) are three, the current transformer chambers (4) are located on the same horizontal plane and are arranged in the front and at the back, the voltage transformer air chambers (6) are three, and the voltage transformer air chambers (6) are located on the same horizontal plane and are arranged in the front and at the back.
5. The mobile 220KV load transfer device with rotatable bushing according to claim 1, wherein: the rotary connecting structure (9) comprises a rotary flange (14), a transition flange (15), a fixed flange (16), a flange snap ring (17), a first sealing ring (18), a first bolt (19), a second bolt (20), a guide ring (21), a roller (22), a second sealing ring (23), a basin-shaped insulator (24) and a gear ring (25), the first bolt (19) penetrates through the fixed flange (16), the basin-type insulator (24), the transition flange (15) and the rotating flange (14) from right to left in sequence, the flange snap ring (17) is positioned above the rotating flange (14) and the transition flange (15), the inner wall of the flange snap ring (17) is contacted with the left side surface of the rotating flange (14) and the right side surface of the transition flange (15), the gear ring (25) is fixedly arranged in a sinking platform of the rotating flange (14), and the guide ring (21) is embedded between the bottom surface of the rotating flange (14) and the top surface of the transition flange (15).
6. The mobile 220KV load transfer device with rotatable bushing according to claim 1, wherein: the bottom end of the voltage transformer air chamber (6) is fixedly connected with the top end of the output rod of the hydraulic lifting rod, and the bottom surface of the hydraulic lifting rod is fixedly connected with the top surface of the cargo platform.
7. The mobile 220KV load transfer device with rotatable bushing according to claim 5, wherein: the surface of the first bolt (19) is in threaded connection with the inner wall of the fixed flange (16), the inner wall of the basin-type insulator (24), the inner wall of the transition flange (15) and the inner wall of the rotating flange (14).
8. The mobile 220KV load transfer device with rotatable bushing according to claim 5, wherein: the second bolt 2(0) is horizontally arranged on the right side of the flange clamping ring (17), the left end of the second bolt (20) penetrates through the flange clamping ring (17) to be connected with the internal threads of the transition flange (15), the roller (22) is rotatably arranged on the left side surface inside the flange clamping ring (17), and the side surface of the roller (22) is in contact with the left side surface of the rotating flange (14).
9. The mobile 220KV load transfer device with rotatable bushing according to claim 5, wherein: the first sealing ring (18) is embedded on the lapping surface of the basin-type insulator (24) and the fixed flange (16), and the second sealing ring (23) is embedded on the lapping surface of the rotary flange (14) and the transition flange (15).
10. The mobile 220KV load transfer device with rotatable bushing according to claim 1, wherein: the fixed arrester bearing structure (12) that is provided with of automobile body (1) top surface, arrester bearing structure (12) top is run through and is provided with arrester (11), automobile body (1) top surface is fixed and is provided with collection accuse cabinet (10), voltage transformer air chamber (6) one side is provided with SF6 gas recovery case (13), SF6 gas recovery case (13) adopt bolt and cargo platform top surface fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168383.3A CN112821268A (en) | 2021-02-07 | 2021-02-07 | 220KV mobile load transfer device with rotatable sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168383.3A CN112821268A (en) | 2021-02-07 | 2021-02-07 | 220KV mobile load transfer device with rotatable sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN112821268A true CN112821268A (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110168383.3A Pending CN112821268A (en) | 2021-02-07 | 2021-02-07 | 220KV mobile load transfer device with rotatable sleeve |
Country Status (1)
| Country | Link |
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| CN (1) | CN112821268A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210126437A1 (en) * | 2019-10-23 | 2021-04-29 | State Grid Zhejiang Economic Research Institute | Vehicle-mounted mobile transformer with a position-adjustable lead-out bushing |
| CN113991663A (en) * | 2021-11-10 | 2022-01-28 | 国网浙江省电力有限公司经济技术研究院 | Movable phase-changing device and vehicle-mounted mobile substation |
| CN114188871A (en) * | 2022-02-17 | 2022-03-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Mobile load transfer device for power supply system |
-
2021
- 2021-02-07 CN CN202110168383.3A patent/CN112821268A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210126437A1 (en) * | 2019-10-23 | 2021-04-29 | State Grid Zhejiang Economic Research Institute | Vehicle-mounted mobile transformer with a position-adjustable lead-out bushing |
| US11611198B2 (en) * | 2019-10-23 | 2023-03-21 | State Grid Zhejiang Economic Research Institute | Vehicle-mounted mobile transformer with a position-adjustable lead-out bushing |
| CN113991663A (en) * | 2021-11-10 | 2022-01-28 | 国网浙江省电力有限公司经济技术研究院 | Movable phase-changing device and vehicle-mounted mobile substation |
| CN113991663B (en) * | 2021-11-10 | 2023-03-28 | 国网浙江省电力有限公司经济技术研究院 | Movable phase-changing device and vehicle-mounted mobile substation |
| CN114188871A (en) * | 2022-02-17 | 2022-03-15 | 国网电力科学研究院武汉南瑞有限责任公司 | Mobile load transfer device for power supply system |
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