CN112910040A - Transformer substation storage battery electric quantity monitoring device - Google Patents
Transformer substation storage battery electric quantity monitoring device Download PDFInfo
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- CN112910040A CN112910040A CN202110118510.9A CN202110118510A CN112910040A CN 112910040 A CN112910040 A CN 112910040A CN 202110118510 A CN202110118510 A CN 202110118510A CN 112910040 A CN112910040 A CN 112910040A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000004880 explosion Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 229920001821 foam rubber Polymers 0.000 claims 1
- 239000007789 gas Substances 0.000 description 8
- 239000000446 fuel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
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- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a transformer substation storage battery electric quantity monitoring device, and belongs to the technical field of transformer substation storage battery electric quantity monitoring devices. The explosion-proof battery comprises a charge-discharge module connected with a storage battery pack, wherein the storage battery pack is also connected with a voltage detection module in parallel, the charge-discharge module is connected with an alternating-current charging power supply, a current detection module is arranged between the charge-discharge module and the storage battery pack, the charge-discharge module, the voltage detection module and the current detection module are all connected with an analysis and control module, and the storage battery pack, the charge-discharge module, the voltage detection module, the current detection module and the analysis and control module are all arranged in the explosion-. The invention can monitor the electric quantity information of the direct-current storage battery in real time and send the electric quantity information to the remote terminal, thereby ensuring the normal operation of the power grid and improving the use safety coefficient.
Description
Technical Field
The invention relates to a transformer substation storage battery electric quantity monitoring device, and belongs to the technical field of transformer substation storage battery electric quantity monitoring devices.
Background
The direct-current storage battery is an important component of a direct-current power supply system in a power supply system, provides safe, stable and reliable power guarantee for loads in the power system, and meanwhile protects normal operation of power equipment such as relay protection and communication equipment, and people pay great attention to development, operation and maintenance of the storage battery as backup power of the power system. The direct current system is an independent power supply, is not influenced by a generator, auxiliary power and a system running mode, and ensures that a backup power supply-storage battery continuously provides important equipment of the direct current power supply under the condition that external alternating current is interrupted.
At present, the existing transformer substation storage battery mainly has the following defects in the use process:
1. the electric power system charges the storage battery pack by using the battery voltage as a standard for stopping charging, when the voltage of the storage battery pack reaches a limit value, the charger stops power supply for charging, however, the charging amount of the storage battery pack is charged in the charging process, real-time monitoring and measurement cannot be carried out, so that a worker cannot check the charging and discharging conditions of the storage battery at any time, and if the storage battery pack is insufficient in electric quantity, first-time alarm cannot be realized;
2. in order to ensure safety, the battery chamber of a substation usually requires that smoke and fire are prohibited, that a switch is prohibited from being installed, and that due to the particularity of the battery supply, the following is also required in regulations on batteries: the positive pole and the negative pole of the storage battery cable should not share one cable, the cable is suitable to adopt an independent channel and is laid along the shortest path, the positive pole and the negative pole of the battery outlet are not allowed to share one cable, and each cable should adopt a single-core flame-retardant power cable. The existing electric energy transmission mode is to directly transmit electric energy through two cables, and a protection device is arranged at the tail end of the cable, but the protection device cannot protect the cable. Since the switch cannot be installed at the battery outlet, only the end equipment can be protected, which can cause the cable between the battery chamber and the direct current screen to be unprotected. When a short circuit occurs in a cable, the failure cannot be removed, and the short circuit between the battery electrodes is directly caused, which may cause a fire due to burning of the cable or explosion of the battery. Therefore, to ensure safety, a dc protection should be provided at the battery outlet. However, most of storage batteries in the transformer substation are lead-acid valve-regulated storage batteries, flammable and explosive gases such as hydrogen, oxygen or corrosive gas sulfuric acid vapor can be generated when the storage batteries are used, if a protection device trips, even a tiny spark can ignite the gas or ignite the gas, and serious safety accidents such as fire disasters can be caused.
Therefore, it is desirable to provide a device for monitoring the battery level of a substation that can overcome the above technical problems.
Disclosure of Invention
The invention aims to solve the problems and provides the substation storage battery electric quantity monitoring device which is simple and convenient in structure, can monitor the electric quantity information of the direct-current storage battery in real time, and simultaneously sends the electric quantity information to the remote terminal to ensure the normal operation of a power grid and improve the use safety coefficient.
The invention discloses a device for monitoring the electric quantity of a storage battery of a transformer substation, which is characterized by comprising a charge-discharge module 2 connected with a storage battery pack 1, wherein the storage battery pack 1 is also connected with a voltage detection module 3 in parallel, the charge-discharge module 2 is connected with an alternating-current charging power supply, a current detection module 5 is also arranged between the charge-discharge module 2 and the storage battery pack 1, the charge-discharge module 2, the voltage detection module 3 and the current detection module 5 are all connected with an analysis and control module 6, and the storage battery pack 1, the charge-discharge module 2, the voltage detection module 3, the current detection module 5 and the analysis and control module 6 are all arranged in an;
the charging and discharging module 3 comprises an input EMC module 13, a power management module 14 and a key conversion module 15, the input EMC module 13 is unidirectionally and electrically connected with a power conversion module 16, the power conversion module 16 is unidirectionally and electrically connected with a filtering detection module 17, the power management module 14 is unidirectionally and electrically connected with an output module 18, the power management module 14 is unidirectionally and electrically connected with a CPU19, the CPU19 is unidirectionally and electrically connected with a power display module 20, and the key conversion module 15 is unidirectionally and electrically connected with a CPU 19;
the analysis and control module 6 comprises a current acquisition module 8, a temperature acquisition module 9, a voltage acquisition module 10, an electricity meter chip 11 and a main controller 12, wherein the current acquisition module 8, the temperature acquisition module 9 and the voltage acquisition module 10 are respectively used for acquiring the current of the storage battery pack 1, the current acquisition module 8, the temperature acquisition module 9 and the voltage acquisition module 10 are respectively connected with a current acquisition pin, a temperature acquisition pin and a voltage acquisition pin of the electricity meter chip 11, the current acquisition module 8, the temperature acquisition module 9, the voltage acquisition module 10 and the electricity meter chip 11 are all connected with the main controller 12, and the main controller 12 is communicated with a remote terminal;
the explosion-proof box 7 comprises a shell 21, a shell cover 22, a switch 23 and a transparent cover 25, wherein the switch 23 and the transparent cover 25 are used for realizing the on-off of an alternating current charging power supply and a charging module 24, the shell 21 is of a cuboid cavity structure with a front opening, the size is 280mm x 430mm x 160mm, the upper wall and the lower wall of the shell 21 are provided with threading holes 21-1, and the periphery of the shell is designed into an arc shape;
the switch 23 is fixed inside the shell 21, the alternating current charging power line respectively penetrates through the threading holes 21-1 of the shell 21, and the foaming glue is filled between the alternating current charging power line and the threading holes 21-1;
the shell cover 22 is detachably covered at the front opening of the shell 21, a rubber sealing strip is arranged between the shell cover 22 and the shell 21, a threaded hole 22-1 is formed in the surface of the shell cover 22, the radius of the threaded hole 22-1 is 60mm, and the switch 23 is opposite to the threaded hole 22-1;
the transparent cover 25 is a transparent rubber soft cover, a rigid threaded connection ring is fixed at the opening end of the transparent cover 25, the transparent cover 25 is in threaded connection with the threaded hole 22-1 through the threaded connection ring, and the transparent cover 25 protrudes out of the surface of the shell cover 22 and the protruding height of the transparent cover 25 is larger than or equal to the distance between the surface of the transparent cover 25 and the internal switch 23.
The substation storage battery electric quantity monitoring device is ingenious in design, the storage battery is discharged when the load of a power grid is minimum by utilizing the charging and discharging module, the discharging current and the voltage drop are synchronously monitored, the residual electric quantity of the storage battery pack is judged according to the discharging curve of the used storage battery, when the electric quantity is insufficient, automatic charging is realized, the discharging test is carried out after the charging is finished, and if the capacity is insufficient, an alarm signal is sent out to prompt a worker to carry out maintenance or replacement. The small environment independent of the storage battery pack is arranged in the explosion-proof box, the interference of various flammable and explosive gases in the storage battery pack can be avoided, the protection can be safely operated, meanwhile, if the protection is tripped, the protection can be switched on under the condition that the gas in the storage battery pack does not need to be discharged, the switching-on operation of the protection is facilitated, and the operation time is saved. In conclusion, the storage battery electric quantity monitoring device is ingenious in structural design, can monitor the electric quantity information of the direct-current storage battery in real time and send the electric quantity information to the remote terminal, guarantees the normal operation of a power grid, and improves the use safety coefficient.
Drawings
FIG. 1 is a block diagram of a device for monitoring the electric quantity of a storage battery of a transformer substation according to the present invention;
FIG. 2 is a schematic view of an open state of the explosion-proof enclosure;
FIG. 3 is a schematic view of an explosion proof enclosure cover;
FIG. 4 is a front view of the explosion proof enclosure with the enclosure cover;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a bottom view of FIG. 4;
fig. 7 is a block diagram of a charge-discharge module;
FIG. 8 is a block diagram of the analysis and control module.
In the figure: 1. the intelligent power supply comprises a storage battery pack, 2, a charging and discharging module, 3, a voltage detection module, 5, a current detection module, 6, an analysis and control module, 7, an explosion-proof box, 8, a current acquisition module, 9, a temperature acquisition module, 10, a voltage acquisition module, 11, a fuel gauge chip, 12, a main controller, 13, an input EMC module, 14, a power management module, 15, a key conversion module, 16, a power conversion module, 17, a filtering and detection module, 18, an output module, 19, a CPU, 20, a power display module, 21, a shell, 21-1, a thread hole, 22, a shell cover, 22-1, a thread hole, 23, a switch, 24, a charging module and 25, and a transparent cover.
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.
Example 1
The electric quantity monitoring device for the storage battery of the transformer substation comprises a charge and discharge module 2 connected with a storage battery pack 1, wherein the storage battery pack 1 is also connected with a voltage detection module 3 in parallel, the charge and discharge module 2 is connected with an alternating-current charging power supply, a current detection module 5 is also arranged between the charge and discharge module 2 and the storage battery pack 1, the charge and discharge module 2, the voltage detection module 3 and the current detection module 5 are all connected with an analysis and control module 6, and the storage battery pack 1, the charge and discharge module 2, the voltage detection module 3, the current detection module 5 and the analysis and control module 6 are all arranged in an explosion-proof box 7;
the specific structure of the charge-discharge module is as follows: the charging and discharging module 3 comprises an input EMC module 13, a power management module 14 and a key conversion module 15, wherein the input EMC module 13 is unidirectionally and electrically connected with a power conversion module 16, the power conversion module 16 is unidirectionally and electrically connected with a filtering detection module 17, the power management module 14 is unidirectionally and electrically connected with an output module 18, the power management module 14 is unidirectionally and electrically connected with a CPU19, the CPU19 is unidirectionally and electrically connected with a power display module 20, and the key conversion module 15 is unidirectionally and electrically connected with a CPU 19;
the specific structure of the analysis and control module is as follows: the analysis and control module 6 comprises a current acquisition module 8, a temperature acquisition module 9 and a voltage acquisition module 10 which are respectively used for acquiring the current of the storage battery pack 1, and further comprises a fuel gauge chip 11 and a main controller 12, wherein the current acquisition module 8, the temperature acquisition module 9 and the voltage acquisition module 10 are respectively connected with a current acquisition pin, a temperature acquisition pin and a voltage acquisition pin of the fuel gauge chip 11, the current acquisition module 8, the temperature acquisition module 9, the voltage acquisition module 10 and the fuel gauge chip 11 are all connected with the main controller 12, and the main controller 12 is communicated with a remote terminal;
the explosion-proof box 7 comprises a shell 21, a shell cover 22, a switch 23 and a transparent cover 25, wherein the switch 23 is used for realizing the on-off of an alternating current charging power supply and a charging module 24, the shell 21 is of a cuboid cavity structure with an opening at the front, the size is 280mm x 430mm x 160mm, the upper wall and the lower wall of the shell 21 are provided with threading holes 21-1, and the periphery of the shell is designed into an arc shape; the switch 23 is fixed inside the shell 21, the alternating current charging power line respectively passes through the threading holes 21-1 of the shell 21, and the foaming glue is filled between the alternating current charging power line and the threading holes 21-1; the shell cover 22 is detachably covered at the front opening of the shell 21, a rubber sealing strip is arranged between the shell cover 22 and the shell 21, a threaded hole 22-1 is formed in the surface of the shell cover 22, the radius of the threaded hole 22-1 is 60mm, and the switch 23 is opposite to the threaded hole 22-1; the transparent cover 25 is a transparent rubber soft cover, a rigid threaded connection ring is fixed at the opening end of the transparent cover 25, the transparent cover 25 is in threaded connection with the threaded hole 22-1 through the threaded connection ring, the transparent cover 25 protrudes out of the surface of the shell cover 22, and the protruding height of the transparent cover 25 is more than or equal to the distance between the surface of the transparent cover 25 and the internal switch 23; the user can touch the switch in the box through this soft lid of transparent rubber, sets the switch manually under the isolated condition of box inside and outside air.
The invention utilizes the charge-discharge module to discharge the storage battery when the load of the power grid is minimum, synchronously monitors the discharge current and the voltage drop, judges the residual electric quantity of the storage battery according to the discharge curve of the used storage battery, realizes automatic charging when the electric quantity is insufficient, performs discharge test after the charging is finished, and sends out an alarm signal to prompt a worker to maintain or replace if the capacity is insufficient. The small environment independent of the storage battery pack is arranged in the explosion-proof box, the interference of various flammable and explosive gases in the storage battery pack can be avoided, the protection can be safely operated, meanwhile, if the protection is tripped, the protection can be switched on under the condition that the gas in the storage battery pack does not need to be discharged, the switching-on operation of the protection is facilitated, and the operation time is saved.
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 (7)
1. The electric quantity monitoring device for the storage battery of the transformer substation is characterized by comprising a charging and discharging module connected with a storage battery pack, wherein the storage battery pack is also connected with a voltage detection module in parallel, the charging and discharging module is connected with an alternating-current charging power supply, a current detection module is further arranged between the charging and discharging module and the storage battery pack, the charging and discharging module, the voltage detection module and the current detection module are all connected with an analysis and control module, and the storage battery pack, the charging and discharging module, the voltage detection module, the current detection module and the analysis and control module are all arranged in an explosion.
2. The substation storage battery capacity monitoring device according to claim 1, wherein the charge and discharge module comprises an input EMC module, a power management module and a button conversion module, the input EMC module is unidirectionally and electrically connected to the power conversion module, the power conversion module is unidirectionally and electrically connected to the filter detection module, the power management module is unidirectionally and electrically connected to the output module, the power management module is unidirectionally and electrically connected to the CPU, the CPU is unidirectionally and electrically connected to the power display module, and the button conversion module is unidirectionally and electrically connected to the CPU.
3. The device for monitoring the electric quantity of the storage battery of the transformer substation according to claim 1, characterized in that the analysis and control module comprises a current acquisition module, a temperature acquisition module and a voltage acquisition module which are respectively used for acquiring the current of the storage battery pack, and further comprises an electricity meter chip and a main controller, wherein the current acquisition module, the temperature acquisition module and the voltage acquisition module are respectively connected with a current acquisition pin, a temperature acquisition pin and a voltage acquisition pin of the electricity meter chip, the current acquisition module, the temperature acquisition module, the voltage acquisition module and the electricity meter chip are all connected with the main controller, and the main controller is communicated with a remote terminal.
4. The substation storage battery capacity monitoring device according to claim 1, wherein the explosion-proof box comprises a shell, a shell cover, a switch for realizing on-off of the alternating current charging power supply and the charging module, and a transparent cover, wherein the shell is of a rectangular cavity structure with a front opening, the size of the shell is 280mm by 430mm by 160mm, the upper wall and the lower wall of the shell are provided with threading holes, and the periphery of the shell is designed in an arc shape.
5. The substation storage battery electric quantity monitoring device according to claim 4, characterized in that the switch is fixed inside the casing, the AC charging power lines respectively pass through the threading holes of the casing, and the foam rubber is filled between the AC charging power lines and the threading holes.
6. The substation storage battery power monitoring device according to claim 4, wherein the cover with a detachable cover is closed at the front opening of the casing, a rubber sealing strip is arranged between the cover and the casing, a threaded hole is formed in the surface of the cover, the radius of the threaded hole is 60mm, and the switch is opposite to the threaded hole.
7. The substation storage battery power monitoring device according to claim 4, wherein the transparent cover is a transparent rubber soft cover, a rigid threaded connection ring is fixed at the open end of the transparent cover, the transparent cover is in threaded connection with the threaded hole through the threaded connection ring, and the transparent cover protrudes out of the surface of the casing cover and the protruding height of the transparent cover is greater than or equal to the distance between the surface of the transparent cover and the internal switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118510.9A CN112910040A (en) | 2021-01-28 | 2021-01-28 | Transformer substation storage battery electric quantity monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110118510.9A CN112910040A (en) | 2021-01-28 | 2021-01-28 | Transformer substation storage battery electric quantity monitoring device |
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| CN112910040A true CN112910040A (en) | 2021-06-04 |
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| CN202110118510.9A Pending CN112910040A (en) | 2021-01-28 | 2021-01-28 | Transformer substation storage battery electric quantity monitoring device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682556A (en) * | 2014-12-16 | 2015-06-03 | 国家电网公司 | Remote intelligent maintenance system for direct current power supply of transformer substation and application of remote intelligent maintenance system |
| CN204376531U (en) * | 2014-12-16 | 2015-06-03 | 国家电网公司 | The remote and intelligent maintenance system of transforming plant DC power supply |
| CN205565901U (en) * | 2016-05-05 | 2016-09-07 | 四川万升智能科技有限公司 | Transformer substation storage cell organizes intelligent management system |
| CN206038874U (en) * | 2016-09-27 | 2017-03-22 | 湖南航天捷诚电子装备有限责任公司 | Accumulator electric quantity detection apparatus |
| CN210273560U (en) * | 2019-09-03 | 2020-04-07 | 黄伦 | Accumulator charging-discharging module |
| CN111244768A (en) * | 2020-01-20 | 2020-06-05 | 国网黑龙江省电力有限公司哈尔滨供电公司 | Special explosion-proof box of transformer substation's battery chamber |
| CN211426740U (en) * | 2019-11-29 | 2020-09-04 | 广东电网有限责任公司 | Power module state self-diagnosis device of distribution network automation terminal |
-
2021
- 2021-01-28 CN CN202110118510.9A patent/CN112910040A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682556A (en) * | 2014-12-16 | 2015-06-03 | 国家电网公司 | Remote intelligent maintenance system for direct current power supply of transformer substation and application of remote intelligent maintenance system |
| CN204376531U (en) * | 2014-12-16 | 2015-06-03 | 国家电网公司 | The remote and intelligent maintenance system of transforming plant DC power supply |
| CN205565901U (en) * | 2016-05-05 | 2016-09-07 | 四川万升智能科技有限公司 | Transformer substation storage cell organizes intelligent management system |
| CN206038874U (en) * | 2016-09-27 | 2017-03-22 | 湖南航天捷诚电子装备有限责任公司 | Accumulator electric quantity detection apparatus |
| CN210273560U (en) * | 2019-09-03 | 2020-04-07 | 黄伦 | Accumulator charging-discharging module |
| CN211426740U (en) * | 2019-11-29 | 2020-09-04 | 广东电网有限责任公司 | Power module state self-diagnosis device of distribution network automation terminal |
| CN111244768A (en) * | 2020-01-20 | 2020-06-05 | 国网黑龙江省电力有限公司哈尔滨供电公司 | Special explosion-proof box of transformer substation's battery chamber |
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