CN220857704U - Interconnection type direct current power supply circuit - Google Patents
Interconnection type direct current power supply circuit Download PDFInfo
- Publication number
- CN220857704U CN220857704U CN202322640212.3U CN202322640212U CN220857704U CN 220857704 U CN220857704 U CN 220857704U CN 202322640212 U CN202322640212 U CN 202322640212U CN 220857704 U CN220857704 U CN 220857704U
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- bus
- switch
- power supply
- direct current
- output
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- 238000010891 electric arc Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
An interconnected DC power supply circuit. The bus-bar switch can generate load power failure during switching, and meanwhile, hidden danger of arc discharge can be generated during switching. The direct-current power supply device comprises a storage battery (6), a direct-current charger (1), a load (7) and a dual-power supply switching device (2), wherein a charging bus (5) of the storage battery is connected with a direct-current section bus (8) through a bus-bar switch (9), the charging bus of the direct-current charger is connected to an output switch (3), one output point of the output switch is connected with a load bus (4) through a circuit, and the other output point of the output switch is connected with the charging bus; the load bus is connected with the direct current bus section through a tie switch (11). The utility model is used for switching the DC power supply in parallel.
Description
Technical Field
The utility model relates to an interconnected direct current power supply circuit.
Background
The direct current power supply circuit of the steam turbine is used for supplying power to a load, an alternating current charging loop is required to be stopped when a direct current charging module in the direct current power supply circuit is in fault replacement, and a bus switch of the direct current system is cut to be in contact with the power supply, namely, the power is supplied through a direct current section bus. Therefore, the bus-bar switch can generate the condition of load power failure during switching, and meanwhile, the hidden trouble of arc discharge can be generated during switching.
Disclosure of utility model
The utility model aims to provide an interconnected direct-current power supply circuit so as to solve the technical problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
An interconnected dc power circuit comprising: the charging bus of the direct-current charger is connected to the output switch, one output point of the output switch is connected with the load bus through a circuit, and the other output point of the output switch is connected with the charging bus;
the load bus is connected with the direct current bus section through the tie switch.
And the interconnection type direct current power supply circuit is characterized in that an output point of the bus-bar switch is connected with a direct current section bus, an input point of the bus-bar switch is connected with a contact bus, and the contact bus is connected with the load bus.
Advantageous effects
1. According to the utility model, by arranging the output switch, parallel switching can be realized when the direct current charging module in the direct current power supply circuit is in fault replacement, so that equipment power failure is avoided.
2. The load bus is connected with the direct current bus section through the tie switch, and the potential arc discharge hazards possibly generated in the power supply switching process are eliminated through the tie switch, so that the safe operation of load equipment is ensured.
Drawings
FIG. 1 is a circuit diagram of the present utility model;
In the figure: 1. a direct current charger; 2. a dual power switching device; 3. an output switch; 4. a load bus; 5. a charging bus; 6. a storage battery; 7. a load; 8. a direct current one-section bus; 9. a bus switch; 10. a contact bus; 11. a tie switch; 31. an output switch off point; 32. a first output point; 33. a second output point; 34. outputting a switch input point; 91. a local side point; 92. a parent-link switch disconnection point; 93. contralateral points; 94. and the input point of the bus-bar switch.
Description of the embodiments
Referring to fig. 1, an interconnected dc power supply circuit comprises: the charging bus 5 of the storage battery is connected with a direct current section bus 8 through a bus-bar switch 9;
An output point (namely a contralateral point 93) of the bus-bar switch is connected with a direct current section bus, an input point 94 of the bus-bar switch is connected with a connecting bus 10, and the connecting bus is connected with the load bus;
The bus switch comprises a contralateral point 93 connected with a direct current section bus, a bus switch input point 94 connected with a contact bus, a bus switch disconnection point 92 and a local lateral point 91 connected with a charging bus;
The charging bus of the direct-current charger is connected to the output switch 3, one output point of the output switch is connected with the load bus 4 through a circuit, and the other output point of the output switch is connected with the charging bus;
The output switch comprises a first output point 32 connected with the charging bus, a second output point 33 connected with the load bus 4 through a line, an output switch disconnection point 31 and an output switch input point 34;
the load bus is connected with a direct current bus section through a tie switch 11.
Working principle: when the direct-current charging module needs to be replaced, the disconnecting link of the busbar switch is switched, so that the contralateral point of the disconnecting link is communicated with the input point of the busbar switch, the storage battery is cut off, the interconnecting switch is closed, and the two sections of load voltage pressing rings are connected in parallel. When the direct current charger is cut off, an output switch disconnection point of the output switch is communicated with an output switch input point, the direct current charger is cut off at the moment, and a load is powered by a direct current bus under the condition of no power failure;
Through the operation mode, the hidden arc discharge hidden danger possibly generated in the power supply switching process of the bus-tie switch is eliminated by means of the tie switch, and the safe operation of load equipment is ensured.
Claims (2)
1. An interconnected dc power circuit comprising: the charging bus of the storage battery is connected with the direct current one-section bus through the bus-bar switch, and is characterized in that: the charging bus of the direct-current charger is connected to the output switch, one output point of the output switch is connected with the load bus through a circuit, and the other output point of the output switch is connected with the charging bus;
the load bus is connected with the direct current bus section through the tie switch.
2. The interconnected dc power supply circuit as set forth in claim 1, wherein: an output point of the bus-tie switch is connected with a direct current section bus, an input point of the bus-tie switch is connected with a contact bus, and the contact bus is connected with the load bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322640212.3U CN220857704U (en) | 2023-09-27 | 2023-09-27 | Interconnection type direct current power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322640212.3U CN220857704U (en) | 2023-09-27 | 2023-09-27 | Interconnection type direct current power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220857704U true CN220857704U (en) | 2024-04-26 |
Family
ID=90774865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322640212.3U Active CN220857704U (en) | 2023-09-27 | 2023-09-27 | Interconnection type direct current power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220857704U (en) |
-
2023
- 2023-09-27 CN CN202322640212.3U patent/CN220857704U/en active Active
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