CN211127297U - AC/DC screen power supply circuit - Google Patents
AC/DC screen power supply circuit Download PDFInfo
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- CN211127297U CN211127297U CN202020090337.7U CN202020090337U CN211127297U CN 211127297 U CN211127297 U CN 211127297U CN 202020090337 U CN202020090337 U CN 202020090337U CN 211127297 U CN211127297 U CN 211127297U
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Abstract
The utility model discloses an alternating current-direct current screen supply circuit, including first AC screen, first DC screen, first group battery, the second AC screen, second DC screen and second group battery, the input power connection of first AC screen, the output of first AC screen connects the input of first DC screen and the input of second DC screen respectively, the output of first DC screen connects the input of first group battery and the input of second DC screen respectively, the input power connection of second AC screen, the output of second AC screen connects the input of first DC screen and the input of second DC screen respectively, the output of second DC screen connects the input of first DC screen and the input of second group battery respectively, the utility model has the advantages of: the alternating current and direct current screen power supply circuit is reliable in power supply and low in failure rate.
Description
Technical Field
The utility model relates to a power supply technical field of electric substation, more specifically relates to an alternating current-direct current screen power supply circuit.
Background
The AC screen and the DC screen are one of the important devices of the substation. The main function of the AC screen is to effectively control and monitor the power supply of the low-voltage AC power supply to the electric equipment. The power supply can provide reliable alternating current power supply for substation illumination, air conditioners, switch cabinet energy storage power supplies, switch cabinet heating power supplies and the like. The main function of the direct current screen is to improve the reliable direct current power supply for the opening and closing of the switch cabinet and the instruments, instruments and meters of the secondary circuit, relay protection and the like.
At present, an alternating current-direct current screen power supply circuit of a centralized control system of a mine substation cannot normally work if any component is damaged, so that the normal operation of a background monitor and two direct current screens directly connected with an alternating current screen is influenced, and the consequence is serious. If the alternating current screens break down, the two direct current screens have no input power supply due to the fact that no standby power supply exists, and power supply is unreliable. If the two direct current screens are not communicated with each other, the whole direct current power supply system fails, and the direct current power supply system must be immediately repaired. In conclusion, the existing AC/DC screen power supply circuit is unreliable and easy to break down.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem how to provide a reliable and low alternating current-direct current of fault rate of power supply screen supply circuit.
The utility model discloses a following technical means realizes solving above-mentioned technical problem: the utility model provides an alternating current-direct current screen power supply circuit, includes first interchange screen, first direct current screen, first group battery, second interchange screen, second direct current screen and second group battery, the input power connection of first interchange screen, the output of first interchange screen is connected the input of first direct current screen and the input of second direct current screen respectively, the output of first direct current screen is connected the input of first group battery and the input of second direct current screen respectively, the input power connection of second interchange screen, the output of second interchange screen is connected the input of first direct current screen and the input of second direct current screen respectively, the output of second direct current screen is connected the input of first direct current screen and the input of second group battery respectively.
The utility model discloses a two exchange screens can give two direct current screen power supplies simultaneously, have solved if exchange the screen and have broken down and do not have standby input power, the unreliable problem of power supply. Meanwhile, 2 direct current screens are connected to increase contact, another direct current screen is started when any direct current screen fails, an alternating current screen connected with the other direct current screen serves as a standby power supply, normal operation of a circuit is guaranteed, the problem that the whole direct current power supply system fails and needs to be immediately repaired when no contact exists between the two direct current screens is solved, and the failure rate is reduced. The stability and the safety of an alternating current and direct current low-voltage power supply system of the substation are greatly improved.
As a further improvement, the power supply is a two-way power supply.
As a further improvement, one path of the two-path power supply comes from the first station and the other path comes from the second station.
As a further improved scheme, the output end of the first direct current screen is connected with the input end of the second direct current screen through a first switch.
As a further improved scheme, the output end of the second direct current screen is connected with the input end of the first direct current screen through a second switch.
As a further improvement, the first alternating current screen and the second alternating current screen are WDJ-AC380 in model.
As a further improvement, the model of the second dc panel and the first dc panel is GZDW.
As a further improvement, the first battery pack and the second battery pack are of the model number GNC 50.
The utility model has the advantages that: the utility model discloses a two exchange screens can give two direct current screen power supplies simultaneously, have solved if exchange the screen and have broken down and do not have standby input power, the unreliable problem of power supply. Meanwhile, 2 direct current screens are connected to increase contact, another direct current screen is started when any direct current screen fails, an alternating current screen connected with the other direct current screen serves as a standby power supply, normal operation of a circuit is guaranteed, the problem that the whole direct current power supply system fails and needs to be immediately repaired when no contact exists between the two direct current screens is solved, and the failure rate is reduced. The stability and the safety of an alternating current and direct current low-voltage power supply system of the substation are greatly improved.
Drawings
Fig. 1 is a schematic diagram of an ac/dc screen power supply circuit disclosed in an embodiment of the present invention.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, an ac-dc panel power supply circuit includes a first ac panel 1, a first dc panel 2, a first battery pack 3, a second ac panel 4, a second dc panel 5, and a second battery pack 6.
In this embodiment, the model of the first AC screen 1 is WDJ-AC 380. The input end of the first alternating current screen 1 is connected with a power supply, and the power supply is a double-circuit power supply. One path of the two-path power supply comes from the first station and the other path comes from the second station, the first station becomes 44# station and the second station becomes 41# station in the embodiment. The output end of the first alternating current screen 1 is respectively connected with the input end of the first direct current screen 2 and the input end of the second direct current screen 5.
In this embodiment, the model of the first dc panel 2 is GZDW, the model of the first battery pack 3 is GNC50, the model of the second dc panel 5 is GZDW, and the output end of the first dc panel 2 is respectively connected to the input end of the first battery pack 3 and the input end of the second dc panel 5.
In this embodiment, the model of the second AC screen 4 is WDJ-AC380, the input end of the second AC screen 4 is connected to the power supply, and the output end of the second AC screen 4 is connected to the input end of the first dc screen 2 and the input end of the second dc screen 5, respectively. The output end of the first dc screen 2 is connected to the input end of the second dc screen 5 through a first switch (not shown). The connection is convenient to control manually or automatically through the first switch, when the second direct current screen 5 is damaged and breaks down, the first switch is closed, the first direct current screen 2 is started as a standby direct current screen of the second direct current screen 5, and the whole system is prevented from being broken down.
In the present embodiment, the second battery pack 6 is of the model number GNC 50. The output end of the second direct current screen 5 is respectively connected with the input end of the first direct current screen 2 and the input end of the second battery pack 6. And the output end of the second direct current screen 5 is connected with the input end of the first direct current screen 2 through a second switch. The second switch is connected to facilitate manual or automatic control, when the first direct current screen 2 is damaged and breaks down, the second switch is closed, the second direct current screen 5 is started as a standby direct current screen of the first direct current screen 2, the whole system is prevented from being broken down, and the system failure rate is reduced.
It should be noted that the utility model discloses the model of the connection relation between each device and device has been provided, and the field technical staff accomplishes the utility model provides a supply circuit's connection according to model and wiring relation very easily, in addition, the utility model discloses an improvement lies in providing a new AC/DC screen supply circuit, and the interface selection of each device is selection as required of field staff in the circuit, and the event is not repeated here to the specific interface of each device.
The utility model provides a pair of AC/DC screen power supply circuit, two exchange the screen and can give two direct current screen power supplies simultaneously, solved if exchange the screen and broke down and do not have reserve input power, the insecure problem of power supply. Meanwhile, the 2 direct current screens are connected to increase contact, so that the problem that the whole direct current power supply system fails if one direct current screen and the battery pack connected with the other direct current screen fail simultaneously is solved, and the failure rate is reduced. The stability and the safety of an alternating current and direct current low-voltage power supply system of the substation are greatly improved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
1. The utility model provides an alternating current-direct current screen power supply circuit, its characterized in that, includes first interchange screen, first direct current screen, first group battery, second interchange screen, second direct current screen and second group battery, the input power connection of first interchange screen, the output of first interchange screen connects the input of first direct current screen and the input of second direct current screen respectively, the output of first direct current screen connects the input of first group battery and the input of second direct current screen respectively, the input power connection of second interchange screen, the output of second interchange screen connects the input of first direct current screen and the input of second direct current screen respectively, the output of second direct current screen connects the input of first direct current screen and the input of second direct current screen respectively.
2. The AC-DC panel power supply circuit according to claim 1, wherein said power supply is a two-way power supply.
3. The AC-DC panel power supply circuit according to claim 2, wherein one of said two power sources is from a first station and the other is from a second station.
4. The AC-DC panel power supply circuit according to claim 1, wherein the output terminal of the first DC panel is connected to the input terminal of the second DC panel through a first switch.
5. The AC-DC panel power supply circuit according to claim 1, wherein the output terminal of the second DC panel is connected to the input terminal of the first DC panel through a second switch.
6. The AC-DC screen power supply circuit of claim 1, wherein the first AC screen and the second AC screen are of the type WDJ-AC 380.
7. The AC-DC panel power supply circuit according to claim 1, wherein the second DC panel and the first DC panel are of GZDW type.
8. The AC-DC panel power supply circuit according to claim 1, wherein the first battery pack and the second battery pack are of the type GNC 50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020090337.7U CN211127297U (en) | 2020-01-16 | 2020-01-16 | AC/DC screen power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020090337.7U CN211127297U (en) | 2020-01-16 | 2020-01-16 | AC/DC screen power supply circuit |
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| CN211127297U true CN211127297U (en) | 2020-07-28 |
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| CN202020090337.7U Active CN211127297U (en) | 2020-01-16 | 2020-01-16 | AC/DC screen power supply circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421762A (en) * | 2020-11-28 | 2021-02-26 | 国家电网有限公司 | Storage battery redundancy control system of electric power low-voltage direct-current system |
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2020
- 2020-01-16 CN CN202020090337.7U patent/CN211127297U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421762A (en) * | 2020-11-28 | 2021-02-26 | 国家电网有限公司 | Storage battery redundancy control system of electric power low-voltage direct-current system |
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