CN218449605U - Small-size direct current portable power source of transformer substation - Google Patents
Small-size direct current portable power source of transformer substation Download PDFInfo
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- CN218449605U CN218449605U CN202222501816.5U CN202222501816U CN218449605U CN 218449605 U CN218449605 U CN 218449605U CN 202222501816 U CN202222501816 U CN 202222501816U CN 218449605 U CN218449605 U CN 218449605U
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Abstract
The utility model discloses a small-size direct current portable power source of transformer substation, including power supply box and lithium cell box, the inside electrical property of lithium cell box installs the lithium cell package, the bottom activity of lithium cell box is provided with heavy universal wheel, it has positioning bolt to fix a position between power supply box and the lithium cell box, the front end position electric connection of power supply box has feeder branch switch, pilot lamp, the module of charging, control screen, generating line voltmeter, generating line ampere meter, the avris position connection of power supply box has U type handle. A small-size direct current portable power source of transformer substation, alarm information can get into backstage or dispatch monitored control system through monitoring device communication interface to ground fault is eliminated and the relay protection maloperation that avoids two point ground connections to cause in the very first time, eliminates the possibility of tripping operation more than grade at the sprout state, is applicable to the direct current power supply system of transformer substation and overhauls, security and convenience when improving direct current system and overhauls.
Description
Technical Field
The utility model relates to a portable power source field, in particular to small-size direct current portable power source of transformer substation.
Background
The direct current portable power source is a supporting device for supplying power by electric energy, a direct current power source system of a transformer substation with a voltage class of 66kV or below is a single set of direct current system, a temporary charger is often adopted for transition when the direct current equipment is overhauled (no output due to faults of the direct current charging equipment, faults of a storage battery pack, full discharge of the storage battery pack, replacement of the direct current equipment and the like), and along with continuous development of science and technology, the requirements of people on the manufacturing process of the direct current portable power source are higher and higher.
The existing direct current mobile power supply has certain defects when in use, if a safe, reliable and convenient temporary direct current power supply is not used for replacing, a direct current feeder branch circuit earth fault occurs in the maintenance process, monitoring personnel cannot find alarm information in time, and direct current earth will possibly cause the rejection or misoperation of a protection device, so that the accident is enlarged. In a transformer substation with two sets of direct-current power supply systems of 110kV, 220kV and 500kV, when a single direct-current system fails or is overhauled, two sets of direct-current systems are often connected in parallel, and if a certain feeder line branch fails at the moment, the branch is opened empty and cannot work normally (no standby open empty), the two sets of direct-current systems are influenced simultaneously, so that the action reliability of a relay protection device is greatly reduced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a be not enough to prior art, the utility model provides a small-size direct current portable power source of transformer substation, alarm information can get into backstage or dispatch monitored control system through monitoring device communication interface to in the very first time eliminate ground fault and avoid the relay protection maloperation that two point ground lead to the fact, eliminate the possibility of tripping operation more than grade at the sprout condition, be applicable to the direct current power supply system of transformer substation and overhaul, security and convenience when improving direct current system and overhaul can effectively solve the problem in the background art.
(II) technical scheme
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a small-size direct current portable power source of transformer substation, includes power supply box and lithium cell case, the inside electrical property of lithium cell case installs the lithium cell package, the bottom activity of lithium cell case is provided with heavy universal wheel, it has positioning bolt to fix a position between power supply box and the lithium cell case, the front end position electric connection of power supply box has feeder branch switch, pilot lamp, charging module, control screen, busbar voltmeter, busbar ammeter and battery ammeter, the avris position connection of power supply box has U type handle.
Preferably, the internal connection of power supply box has comprehensive measurement module, fuse, the module switch that charges, insulating monitoring module, current sensor, generating line row and exchanges the service entrance switch, the fuse is connected with the module output master switch that charges, it is connected with interchange service entrance and battery service entrance terminal, ac contactor, surge protector and auxiliary relay to exchange the service entrance switch.
Preferably, the bottom of power supply box is connected with outside inlet wire entrance, the inside avris of power supply box is connected with feeder terminal row, the position that lithium cell incasement portion is located the lithium cell package is connected with lithium cell output terminal and lithium cell output master switch.
Preferably, the power supply box with synthesize between measurement module, fuse, the module power switch that charges, insulating monitoring module, current sensor, generating line row and the interchange inlet wire switch electric connection, the fuse with charge between the module output master switch electric connection, exchange inlet wire switch and exchange inlet wire and battery inlet wire terminal, ac contactor, surge protector and relay between electric connection.
Preferably, integrated into one piece between power supply box and the outside inlet wire entrance, the electric installation between lithium cell case and lithium cell package, lithium cell output terminal, the lithium cell output master switch.
Preferably, the power box is electrically mounted with the positions among the feeder branch switch, the indicator lamp, the charging module, the monitoring screen, the bus voltmeter, the bus ammeter and the battery ammeter, and the bottom of the power box is fixedly mounted with the upper end of the lithium battery box through a positioning bolt.
(III) advantageous effects
Compared with the prior art, the utility model provides a small-size direct current portable power source of transformer substation possesses following beneficial effect: this small-size direct current portable power source of transformer substation, alarm information can get into backstage or dispatch monitored control system through monitoring device communication interface to in the very first time eliminate ground fault and avoid the relay protection maloperation that two point ground connections caused, eliminate the possibility of tripping operation more than grade at the sprouting state, be applicable to transformer substation's direct current electrical power generating system and overhaul, security and convenience when improving direct current system and overhaul, whole direct current portable power source simple structure, and convenient operation, the effect of use is better for traditional mode.
Drawings
Fig. 1 is the utility model relates to a small-size direct current portable power source's of transformer substation overall structure schematic diagram.
Fig. 2 is the utility model relates to a whole inside schematic structure among the small-size direct current portable power source of transformer substation.
Fig. 3 is the utility model relates to a monitor screen's among small-size direct current portable power source of transformer substation structural schematic diagram.
Fig. 4 is the utility model relates to a structure schematic diagram of insulating monitoring module among small-size direct current portable power source of transformer substation.
In the figure: 1. a power supply box; 2. a lithium battery case; 3. a monitor screen; 4. a charging module; 5. a feeder line branch switch; 6. positioning the bolt; 7. a lithium battery pack; 8. a heavy duty universal wheel; 9. a bus voltmeter; 10. a bus ammeter; 11. a battery ammeter; 12. a U-shaped handle; 13. an indicator light; 14. a lithium battery output terminal; 15. a lithium battery output main switch; 16. an alternating current incoming line switch; 17. an alternating current incoming line and a battery incoming line terminal; 18. a current sensor; 19. the charging module outputs a main switch; 20. a comprehensive measurement module; 21. a fuse; 22. a charging module power supply switch; 23. an insulation monitoring module; 24. a feeder terminal row; 25. a bus bar; 26. an intermediate relay; 27. a surge protector; 28. an AC contactor; 29. an outer inlet line access port.
Detailed Description
The technical solutions of the present invention will be described more clearly and completely below with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, but not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The examples, in which specific conditions are not specified, were carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.
As shown in fig. 1-4, a small-sized dc mobile power supply for a transformer substation comprises a power supply box 1 and a lithium battery box 2, wherein a lithium battery pack 7 is electrically installed inside the lithium battery box 2, a heavy universal wheel 8 is movably arranged at the bottom of the lithium battery box 2, a positioning bolt 6 is positioned between the power supply box 1 and the lithium battery box 2, a feeder branch switch 5, an indicator lamp 13, a charging module 4, a monitor screen 3, a bus voltmeter 9, a bus ammeter 10 and a battery ammeter 11 are electrically connected to the front end of the power supply box 1, and a U-shaped handle 12 is positioned and connected to the side of the power supply box 1.
Further, the power box 1 is internally connected with a comprehensive measurement module 20, a fuse 21, a charging module power supply switch 22, an insulation monitoring module 23, a current sensor 18, a bus bar 25 and an alternating current incoming line switch 16, the fuse 21 is connected with a charging module output main switch 19, and the alternating current incoming line switch 16 is connected with an alternating current incoming line and battery incoming line terminal 17, an alternating current contactor 28, a surge protector 27 and an intermediate relay 26.
Further, the bottom of the power box 1 is connected with an external incoming line channel port 29, the inside edge of the power box 1 is connected with a feeder terminal row 24, and the position, located in the lithium battery pack 7, inside the lithium battery box 2 is connected with a lithium battery output terminal 14 and a lithium battery output main switch 15.
Furthermore, the power box 1 is electrically connected with the comprehensive measurement module 20, the fuse 21, the charging module power supply switch 22, the insulation monitoring module 23, the current sensor 18, the bus bar 25 and the alternating current incoming line switch 16, the fuse 21 is electrically connected with the charging module output main switch 19, and the alternating current incoming line switch 16 is electrically connected with the alternating current incoming line and battery incoming line terminal 17, the alternating current contactor 28, the surge protector 27 and the intermediate relay 26.
Further, the power box 1 and the external wire inlet channel port 29 are integrally formed, and the lithium battery box 2, the lithium battery pack 7, the lithium battery output terminal 14 and the lithium battery output main switch 15 are electrically mounted.
Further, the power box 1 is electrically mounted with the feeder branch switch 5, the indicator lamp 13, the charging module 4, the monitoring screen 3, the bus voltmeter 9, the bus ammeter 10 and the battery ammeter 11, and the bottom of the power box 1 is fixedly mounted with the upper end of the lithium battery box 2 through the positioning bolt 6.
Example (b):
KC30 small-size transformer substation direct current portable power source comprises upper and lower two boxes, and two boxes can split exclusive use, also can make up the use, and upper portion possesses high frequency charging control module, synthesizes collection module, insulating detecting element, interchange inlet wire unit, direct current and presents the unit and main control LCD display constitutes, and the lower part is by high performance lithium cell components of a whole that can function independently combination (the centre is equipped with cable connection preformed hole), the transportation and the installation of being convenient for.
A direct current monitoring device and an insulation monitoring module, namely, a graph 3 and a graph 4 are installed on the whole set of mobile power supply equipment, so that when the mobile power supply equipment replaces maintenance equipment to work, once branch direct current grounding occurs, an alarm can be given in time, alarm information can enter a background or a dispatching monitoring system through a communication interface of the monitoring device, so that ground faults can be eliminated at the first time, the relay protection rejection and misoperation caused by two-point grounding are avoided, the possibility of override tripping is eliminated in a budding state, and the safe operation coefficient of a power grid is greatly improved.
The alternating current inlet wire unit is additionally provided with a double-circuit power supply (automatic switching), when one path of alternating current is lost, the alternating current inlet wire unit can be automatically switched to another loop to operate, so that the operation reliability is greatly improved.
The KC30 small-sized substation direct-current mobile power supply is provided with 24 output switches with extreme difference matching reasonability (10A 14 is suitable for overhauling direct-current equipment of substations of 66KV and below), (169A 5 and 32A 5 are suitable for power loss of direct-current protection feed-out branches of substations of 110kV, 220kV and 500 kV), and the requirements of field operation of all substations can be met.
The device adopts the automatic control technology of double alternating current input automatic switching power supply and high-frequency power supply module to supply power to the high-performance separable series-connection combined lithium battery and the carried direct current load, the lithium battery is in a floating charge state in normal time, and the load is supplied by the charging device.
(1) Input power AC220V 50HZ
(2) The voltage stabilizing precision is less than or equal to +/-0.5 percent
(3) The precision of the steady flow is less than or equal to plus or minus 1 percent
(4) Ripple coefficient is less than or equal to 0.5 percent
(5) The unbalance degree of the flow equalization is less than or equal to +/-5 percent
(6) Setting value of ground resistance is less than or equal to 25K)
(7) The output power DC220V 10A 1698 a.
It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a small-size direct current portable power source of transformer substation, includes power supply box (1) and lithium cell case (2), its characterized in that: lithium cell package (7) are installed to the inside electrical property of lithium cell box (2), the bottom activity of lithium cell box (2) is provided with heavy universal wheel (8), it has positioning bolt (6) to fix a position between power supply box (1) and lithium cell box (2), the front end position electric connection of power supply box (1) has feeder branch switch (5), pilot lamp (13), charging module (4), control screen (3), bus voltmeter (9), bus ammeter (10) and battery ammeter (11), the avris position connection of power supply box (1) has U type handle (12).
2. The substation small-sized direct current mobile power supply according to claim 1, characterized in that: the utility model discloses a power supply box, including power supply box (1), internal connection has comprehensive measurement module (20), fuse (21), the module power supply switch that charges (22), insulating monitoring module (23), current sensor (18), generating line row (25) and exchange inlet wire switch (16), fuse (21) are connected with the module output master switch that charges (19), exchange inlet wire switch (16) are connected with exchange inlet wire and battery inlet wire terminal (17), ac contactor (28), surge protector (27) and auxiliary relay (26).
3. The substation small-sized direct current mobile power supply according to claim 1, characterized in that: the bottom of power supply box (1) is connected with outside inlet wire entrance (29), the inside avris of power supply box (1) is connected with feeder terminal row (24), the inside position that is located lithium cell package (7) of lithium cell case (2) is connected with lithium cell output terminal (14) and lithium cell output master switch (15).
4. The substation small-sized direct current mobile power supply according to claim 2, characterized in that: power supply box (1) and synthesize between measurement module (20), fuse (21), the module power supply switch that charges (22), insulating monitoring module (23), current sensor (18), generating line row (25) and exchange incoming line switch (16) electric connection, fuse (21) and the module output of charging electric connection between master switch (19), exchange incoming line switch (16) and exchange between inlet wire and battery inlet wire terminal (17), ac contactor (28), surge protector (27) and intermediate relay (26) electric connection.
5. The substation small-sized direct current mobile power supply according to claim 3, characterized in that: the power supply box is characterized in that the power supply box (1) and the external wire inlet channel port (29) are integrally formed, and the lithium battery box (2) is electrically mounted with the lithium battery pack (7), the lithium battery output terminal (14) and the lithium battery output main switch (15).
6. The substation small-sized direct current mobile power supply according to claim 1, characterized in that: the power supply box is characterized in that the power supply box (1) is electrically mounted with positions between a feeder branch switch (5), an indicator lamp (13), a charging module (4), a monitoring screen (3), a bus voltmeter (9), a bus ammeter (10) and a battery ammeter (11), and the bottom of the power supply box (1) is fixedly mounted with the upper end of a lithium battery box (2) through a positioning bolt (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222501816.5U CN218449605U (en) | 2022-09-21 | 2022-09-21 | Small-size direct current portable power source of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222501816.5U CN218449605U (en) | 2022-09-21 | 2022-09-21 | Small-size direct current portable power source of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218449605U true CN218449605U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222501816.5U Active CN218449605U (en) | 2022-09-21 | 2022-09-21 | Small-size direct current portable power source of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218449605U (en) |
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2022
- 2022-09-21 CN CN202222501816.5U patent/CN218449605U/en active Active
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