CN216086256U - Automatic power switching system - Google Patents
Automatic power switching system Download PDFInfo
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- CN216086256U CN216086256U CN202121348196.5U CN202121348196U CN216086256U CN 216086256 U CN216086256 U CN 216086256U CN 202121348196 U CN202121348196 U CN 202121348196U CN 216086256 U CN216086256 U CN 216086256U
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Abstract
The utility model discloses an automatic power supply switching system which comprises a standby power supply, a main power supply, a dual-power supply conversion system, a generator, a main switch and a feeder switch, wherein the main power supply is connected with the standby power supply; a double-power-supply conversion system is arranged in the power distribution room and is connected with a main power supply and a standby power supply; the main power supply is connected with the mains supply; the number of the distribution rooms is at least two, and the number of the feeder switches is at least two, and the feeder switches are respectively used for controlling the on-off of standby power supplies in different distribution rooms; the controller output end of the dual power supply conversion system is connected with the input end of the generator control box, the output end of the generator control box is connected with the input end of the main switch, and the output end of the main switch is respectively connected with the input ends of the feeder switches. The utility model can provide a standby power supply for the bus with the fault in time, does not influence other buses and equipment which normally run, and has simple circuit connection.
Description
Technical Field
The utility model relates to an automatic power supply switching system.
Background
The dual power automatic switching system (ATMT) is mainly applied to some critical loads which do not allow power failure in hospitals and factories. When the main power supply fails and can not supply power normally, the ATMT can automatically turn off the switch on the main power supply side in a short time and turn on the switch on the standby power supply side, and the standby power supply is put into use until the main power supply fails and the normal power supply is recovered; therefore, continuous power supply for important loads is ensured, and important loss caused by power failure is avoided.
The conventional dual-power conversion system is mainly used in a situation of one main power supply and one standby power supply, and when a main power supply fails, a standby power supply (usually a diesel generator) is put into use; and one section of the bus is only provided with one standby power supply, and the one-to-one mode is very common at present. If in the same distribution project, there are a plurality of distribution rooms, multistage generating lines, and every section of generating line all has some important loads down, therefore every section of generating line all is not allowed to have a power failure, under this condition, if every section of generating line disposes a generator respectively and is the stand-by power supply, then the cost is very high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automatic power supply switching system which is simple in circuit connection, can provide a standby power supply for a bus with a fault in time and does not influence other buses and equipment which normally run.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a power supply automatic switching system comprises a standby power supply, a main power supply, a dual-power supply conversion system, a generator, a main switch and a feeder switch;
a double-power-supply conversion system is arranged in the power distribution room and is connected with a main power supply and a standby power supply; the main power supply is connected with the mains supply;
the number of the distribution rooms is at least two, and the number of the feeder switches is at least two, and the feeder switches are respectively used for controlling the on-off of standby power supplies in different distribution rooms;
the controller output end of the dual power supply conversion system is connected with the input end of the generator control box, the output end of the generator control box is connected with the input end of the main switch, and the output end of the main switch is respectively connected with the input ends of the feeder switches.
As a further improvement of the utility model, at least two double-power-supply conversion systems are arranged in one power distribution room.
As a further improvement of the utility model, the feeder switches and the standby power supplies are the same in number and are respectively controlled in a one-to-one correspondence manner.
As a further improvement of the utility model, when all the main power supplies in any power distribution room are in power failure, the generator control box starts the generator, the feeder switch is fully switched on, and the dual power supply conversion system at the failure position detects and switches the circuit to the standby power supply.
As a further improvement of the utility model, when at least one main power supply in each distribution room is recovered, the generator is stopped, and the feeder switch is opened.
As a further improvement of the utility model, a feeder switch delay switch-on controller is arranged between the main switch and the feeder switch.
As a further improvement of the utility model, the time delay is 10s after the total switching brake, and the feeder switch is switched on simultaneously.
As a further improvement of the utility model, the feeder switch is provided with an undervoltage module.
As a further improvement of the utility model, the main switch is provided with an undervoltage module.
Has the advantages that:
when any section of bus main power supply fails, the utility model can provide standby power supply for the failed bus in time without influencing other normal operation buses and equipment, and simultaneously realizes that only one generator is used for respectively supplying power for the equipment under a plurality of different buses.
The circuit of the utility model has simple design and low cost.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a circuit module of the present invention.
Fig. 2 is a schematic diagram of the total opening and closing mechanism of the utility model.
Fig. 3 is a switching-on and switching-off principle diagram of the feeder switch.
FIG. 4 is a schematic flow diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the singular forms "a," "an," or "the" do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The terms "comprises," "comprising," or the like, mean that the elements or items listed before "comprises" or "comprising" encompass the features, integers, steps, operations, elements, and/or components listed after "comprising" or "comprising," and do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may also be changed accordingly.
An automatic power switching system comprises a standby power supply, a main power supply, a dual-power switching system (ATMT), a generator, a main switch and a feeder switch;
a double-power-supply conversion system is arranged in the power distribution room and is connected with a main power supply and a standby power supply; the main power supply is connected with the mains supply; the number of the distribution rooms is at least two, and the number of the feeder switches is at least two, and the feeder switches are respectively used for controlling the on-off of standby power supplies in different distribution rooms;
the controller output end of the dual power supply conversion system is connected with the input end of the generator control box, the output end of the generator control box is connected with the input end of the main switch, and the output end of the main switch is respectively connected with the input ends of the feeder switches.
At least two double power supply conversion systems are arranged in one power distribution room, and the number of the double power supply conversion systems can be one or three, and the like.
In this embodiment, the feeder switches and the standby power supplies are the same in number and are controlled in a one-to-one correspondence manner. It is also possible to control all the backup power sources in one distribution room with one feeder switch.
When all the main power supplies in any distribution room are in power failure, the generator control box starts the generator, the feeder switch is completely switched on, and the dual-power-supply conversion system at the failure position detects and switches the circuit to the standby power supply.
When at least one main power supply in each distribution room recovers power supply, the generator is shut down, and the feeder switch is opened.
And a feeder switch delay switch-on controller is arranged between the main switch and the feeder switch.
The feeder switch is provided with an undervoltage module, namely a feeder switch delay switch-on controller.
The main switch is provided with an undervoltage module, namely a main switch automatic switch-on controller.
The main power supplies of the double-power-supply conversion systems of the distribution rooms are taken from different buses, but the standby power supplies are all taken from the same generator, so that a one-to-many power supply mode is realized.
In this embodiment, the bus bars of each distribution room are independent of each other, and the main power supply and the backup power supply are switched by the controller. The main power supply and the standby power supply of each section of bus are respectively switched by the ATMT, a controller of the ATMT transmits signals to a generator control box, and the generator control box starts a generator according to the signals and supplies power to the bus with a fault through a main switch and a feeder switch.
In this embodiment, two dual power conversion systems are provided in one distribution room, and three distribution rooms are provided.
When the I section main power supply and the II section main power supply in any power distribution room simultaneously have faults and lose power, the ATMT respectively outputs a signal, and the two signals are serially connected (AND logic) and then are sent to a generator control box to start the generator.
When the output voltage and the frequency meet the requirement of the electric energy quality (the voltage is 380V-400V, and the frequency is 50HZ), the generator control box sends a closing preparation signal to the master switch controller, and the controller sends a closing instruction after receiving the signal to perform master switch closing; at the moment, the time delay unit starts to time, and after 10s of time delay, all the feeder switches are switched on simultaneously. At this time, the power generated by the generator is transmitted to the backup power supply side of the bus in which the fault occurs, and the ATMT on this side detects the power supply voltage on the backup power supply side, and after determining that the voltage is normal, the ATMT controls the power receiving load to be switched to the backup power supply.
When the power supply of the I-section main power supply and/or the II-section main power supply in all the distribution rooms is recovered to be normal, the ATMT controls the switching to the main power supply, at the moment, the mains supply supplies power to the load, the ATMT sends a disconnection signal, after time delay, the generator stops, the automatic brake opening is carried out after the incoming line is always switched on and off, and the feeder line switch manually opens the brake. Of course, the feeder switch can also be provided with an undervoltage module and an automatic brake-off.
According to the mode, only one generator is needed to supply power for important loads of a plurality of distribution rooms, and when a main power supply of any section of bus breaks down, a standby power supply can be timely provided for the broken bus, and other normally-operated equipment cannot be influenced.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (6)
1. An automatic power switching system is characterized in that: the system comprises a standby power supply, a main power supply, a dual-power conversion system, a generator, a main switch and a feeder switch;
a double-power-supply conversion system is arranged in the power distribution room and is connected with a main power supply and a standby power supply; the main power supply is connected with the mains supply;
the number of the distribution rooms is at least two, and the number of the feeder switches is at least two, and the feeder switches are respectively used for controlling the on-off of standby power supplies in different distribution rooms;
the controller output end of the dual power supply conversion system is connected with the input end of the generator control box, the output end of the generator control box is connected with the input end of the main switch, and the output end of the main switch is respectively connected with the input ends of the feeder switches.
2. The automatic power switching system according to claim 1, wherein: at least two double-power-supply conversion systems are arranged in one power distribution room.
3. The automatic power switching system according to claim 2, wherein: the feeder switches and the standby power supplies are the same in number and are respectively controlled in a one-to-one correspondence mode.
4. The automatic power switching system according to claim 1, wherein: and a feeder switch delay switch-on controller is arranged between the main switch and the feeder switch.
5. The automatic power switching system according to claim 1, wherein: the feeder switch is provided with an undervoltage module.
6. The automatic power switching system according to claim 1, wherein: the master switch is provided with an undervoltage module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121348196.5U CN216086256U (en) | 2021-06-17 | 2021-06-17 | Automatic power switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121348196.5U CN216086256U (en) | 2021-06-17 | 2021-06-17 | Automatic power switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216086256U true CN216086256U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121348196.5U Active CN216086256U (en) | 2021-06-17 | 2021-06-17 | Automatic power switching system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216086256U (en) |
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2021
- 2021-06-17 CN CN202121348196.5U patent/CN216086256U/en active Active
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