CN114629229A - Automatic access system of standby charger - Google Patents
Automatic access system of standby charger Download PDFInfo
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- CN114629229A CN114629229A CN202210444376.6A CN202210444376A CN114629229A CN 114629229 A CN114629229 A CN 114629229A CN 202210444376 A CN202210444376 A CN 202210444376A CN 114629229 A CN114629229 A CN 114629229A
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- charger
- bus
- module
- switch
- electrically connected
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention aims to provide an automatic access system of a standby charger, which has a simple structure and high reliability and can avoid the problem of power loss of a direct-current bus. The intelligent charging system comprises a backup charger, a charger output switch and two power supply modules, wherein the two power supply modules are electrically connected through the charger output switch, each power supply module comprises a bus module, a storage battery module, a monitoring module and a direct current charger, the storage battery module and the direct current charger are electrically connected with the bus module, the direct current charger and the charger output switch are electrically connected with the monitoring module, and the backup charger is electrically connected with the charger output switch. The invention is applied to the technical field of power supply systems.
Description
Technical Field
The invention is applied to the technical field of power supply systems, and particularly relates to an automatic access system of a standby charger.
Background
The direct current power supply system for the station is mainly responsible for providing reliable power supply for switching-on and switching-off control of relay protection equipment, various monitoring devices (signals), communication equipment and circuit breakers (switches) in the station and also relates to whether secondary protection and control signals can be normally switched on or not. According to the requirements of the power industry standard DL/T5044-2014, a plurality of groups of storage batteries and a plurality of chargers are required to be arranged in an important transformer substation with the voltage of more than 220kV, and a communication electric appliance is arranged between two sections of buses. And when the bus runs normally, the two sections of buses respectively run independently. Therefore, two sections of normally-operated direct current buses are operated by respective chargers with one group of storage batteries, but when a direct current system fails, the storage batteries in the system are discharged in large quantities, and at the moment, a standby charger needs to be manually put into operation or a bus coupler switch needs to be manually put into operation. However, the time required for manually putting into the bus coupler switch or manually putting into the standby charger is long, and when the transformer substation is remote, the maintenance personnel can discharge the electric quantity of the storage battery when arriving at the site too soon, so that the direct-current bus loses power. If the automatic access system of the standby charger, which has the advantages of simple structure and high reliability and can avoid the problem of power loss of the direct-current bus, can be designed, the problems can be well solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the automatic access system of the standby charger, which has the advantages of simple structure and high reliability and can avoid the problem of power loss of a direct-current bus.
The technical scheme adopted by the invention is as follows: the intelligent charging system comprises a backup charger, a charger output switch and two power supply modules, wherein the two power supply modules are electrically connected through the charger output switch, each power supply module comprises a bus module, a storage battery module, a monitoring module and a direct current charger, the storage battery module and the direct current charger are electrically connected with the bus module, the direct current charger and the charger output switch are electrically connected with the monitoring module, and the backup charger is electrically connected with the charger output switch.
Furthermore, the two bus modules are electrically connected through a charger output switch, the charger output switch comprises a ZK31 switch and a ZK32 switch, the ZK31 switch is electrically connected with the ZK32 switch, and the ZK31 switch and the ZK32 switch are electrically connected with the backup charger.
Further, the two bus modules are respectively a first bus module and a second bus module, the first bus module comprises a first bus and a second bus, the second bus module comprises a third bus and a fourth bus, the first bus is electrically connected with the third bus through a ZK5 switch, and the second bus is electrically connected with the fourth bus through a charger output switch.
Further, the two monitoring modules are electrically connected with the ZK31 switch and the ZK32 switch, respectively.
Furthermore, the power supply module further comprises a charging switch, the direct current charger is electrically connected with the bus module through the charger output switch, and the charger output switch is electrically connected with the monitoring module.
Further, the automatic access system of the standby charger further comprises a current detection module, and the current detection module is electrically connected with the two storage battery modules.
Further, the automatic access system of the standby charger further comprises a voltage detection module, and the voltage detection module is electrically connected with the bus module.
Further, the two direct current chargers are electrically connected with a computer system.
The beneficial effects of the invention are: when one of the direct current chargers fails, for example, overvoltage or undervoltage occurs, the computer system sends a fault signal, the monitoring module receives the fault signal and then sends a command to the charging switch to disconnect the charging switch so that the direct current charger exits, the direct current charger is subsequently overhauled, and then the monitoring module sends a command to the charger output switch so that the ZK31 switch or the ZK32 switch is closed so that the backup charger is connected to supply power. Therefore, the invention has simple structure and high reliability, and when the direct current charger fails, the backup charger can be automatically connected, thereby avoiding the power loss problem of the direct current bus.
Drawings
FIG. 1 is a connection block diagram of the present invention;
FIG. 2 is a circuit schematic of the present invention;
FIG. 3 is a circuit schematic of the first monitoring module;
fig. 4 is a circuit schematic of the second monitoring module.
Detailed Description
As shown in fig. 1 to 4, in this embodiment, the present invention includes a backup charger 1, a charger output switch 2, and two power supply modules 7, where the two power supply modules 7 are electrically connected through the charger output switch 2, each power supply module 7 includes a bus module 3, a storage battery module 4, a monitoring module 5, and a dc charger 6, the storage battery module 4 and the dc charger 6 are both electrically connected to the bus module 3, the dc charger 6 and the charger output switch 2 are both electrically connected to the monitoring module 5, and the backup charger 1 is electrically connected to the charger output switch 2.
In this embodiment, the two bus modules 3 are electrically connected through the charger output switch 2, the charger output switch 2 includes a ZK31 switch and a ZK32 switch, the ZK31 switch is electrically connected with the ZK32 switch, and the ZK31 switch and the ZK32 switch are electrically connected with the backup charger 1.
In this embodiment, two bus modules 3 are a first bus module and a second bus module respectively, the first bus module includes a first bus and a second bus, the second bus module includes a third bus and a fourth bus, the first bus is electrically connected to the third bus through a ZK5 switch, and the second bus is electrically connected to the fourth bus through a charger output switch 2.
In this embodiment, the two monitoring modules 5 are a first monitoring module and a second monitoring module, respectively, the first monitoring module is electrically connected to the ZK31 switch, and the second monitoring module is electrically connected to the ZK32 switch.
In this embodiment, the power supply module 7 further includes a charging switch, the dc charger 6 is electrically connected to the bus module 3 through the charging switch, and the charging switch is electrically connected to the monitoring module 5.
In this embodiment, the automatic access system for the standby charger further includes a current detection module, and the current detection module is electrically connected to the two storage battery modules 4.
In this embodiment, the automatic access system for the standby charger further includes a voltage detection module, and the voltage detection module is electrically connected to the bus module 3.
In this embodiment, both the two dc chargers 6 are electrically connected to a computer system.
In this embodiment, when one of the dc chargers 6 fails, for example, overvoltage or undervoltage occurs, the computer system sends a fault signal, after receiving the fault signal, the monitoring module 5 sends a command to the charging switch first to turn off the charging switch, so that the dc charger 6 exits, and then the dc charger 6 is repaired, and then the monitoring module 5 sends a command to the charger output switch 2 to turn on the charger output switch 2, so that the backup charger 1 is connected to supply power. Therefore, the invention has simple structure and high reliability, and when the direct current charger fails, the backup charger can be automatically connected, thereby avoiding the power loss problem of the direct current bus.
In this embodiment, the direct current charger 6 outputs an undervoltage, the required undervoltage value is 0-999V, 198V is defaulted, the discharge current of the storage battery module 4 is greater than 1A, the storage battery module is kept for 30 seconds, and the backup charger 1 is put into use; after the fault of the direct current charger 6 is eliminated, namely the output voltage of the direct current charger 6 is recovered to 198V-245V, the direct current charger 6 recovers power supply, and the backup charger 1 quits.
In this embodiment, the direct current charger 6 outputs overvoltage, the required overvoltage value is 0-999V, 245V is defaulted, the backup charger 1 is put into service, the direct current charger 6 is withdrawn, and manual maintenance is needed at this time; after the fault of the direct current charger 6 is eliminated, namely the output voltage of the direct current charger 6 is recovered to 198V-245V, the direct current charger 6 recovers power supply, and the backup charger 1 quits.
In this embodiment, the output overvoltage and undervoltage value of the backup charger 1 may be set.
In this embodiment, the ZK31 switch and the ZK32 switch of the backup charger 1 are required to be turned on at the same time, an electrical interlock process is adopted, and when both the two dc chargers 6 are under-voltage, the backup charger 1 is only used for one of the dc chargers 6.
Claims (8)
1. The utility model provides a reserve charger automatic access system which characterized in that: it includes reserve charger (1), charger output switch (2) and two power module (7), two power module (7) are passed through charger output switch (2) carry out the electricity and are connected, power module (7) are including bus module (3), battery module (4), monitor module (5) and direct current charger (6), battery module (4) with direct current charger (6) all with bus module (3) carry out the electricity and connect, direct current charger (6) and charger output switch (2) all with monitor module (5) carry out the electricity and connect, reserve charger (1) with charger output switch (2) carry out the electricity and connect.
2. The automatic access system of the standby charger according to claim 1, characterized in that: two bus module (3) are through machine output switch (2) that charges carries out the electricity and is connected, machine output switch (2) that charges includes ZK31 switch and ZK32 switch, ZK31 switch with the ZK32 switch carries out the electricity and connects, ZK31 switch with the ZK32 switch all with reserve machine (1) that charges carries out the electricity and connects.
3. The automatic access system of the standby charger according to claim 2, characterized in that: the two bus modules (3) are respectively a first bus module and a second bus module, the first bus module comprises a first bus and a second bus, the second bus module comprises a third bus and a fourth bus, the first bus is electrically connected with the third bus through a ZK5 switch, and the second bus is electrically connected with the fourth bus through a charger output switch (2).
4. The automatic access system of the standby charger according to claim 2, characterized in that: the two monitoring modules (5) are respectively and electrically connected with the ZK31 switch and the ZK32 switch.
5. The automatic access system of the standby charger according to claim 1, characterized in that: the power supply module (7) further comprises a charging switch, the direct current charger (6) is electrically connected with the bus module (3) through the charging switch, and the charging switch is electrically connected with the monitoring module (5).
6. The automatic access system of the standby charger according to claim 1, characterized in that: the automatic access system of the standby charger further comprises a current detection module, and the current detection module is electrically connected with the two storage battery modules (4).
7. The automatic access system of the standby charger according to claim 1, characterized in that: the automatic access system of the standby charger further comprises a voltage detection module, and the voltage detection module is electrically connected with the bus module (3).
8. The automatic access system of the standby charger according to claim 1, characterized in that: and the two direct current chargers (6) are electrically connected with a computer system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210444376.6A CN114629229A (en) | 2022-04-26 | 2022-04-26 | Automatic access system of standby charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210444376.6A CN114629229A (en) | 2022-04-26 | 2022-04-26 | Automatic access system of standby charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114629229A true CN114629229A (en) | 2022-06-14 |
Family
ID=81906876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210444376.6A Pending CN114629229A (en) | 2022-04-26 | 2022-04-26 | Automatic access system of standby charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114629229A (en) |
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2022
- 2022-04-26 CN CN202210444376.6A patent/CN114629229A/en active Pending
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