CN111244936A - Dual-power switching box - Google Patents
Dual-power switching box Download PDFInfo
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- CN111244936A CN111244936A CN201911383787.3A CN201911383787A CN111244936A CN 111244936 A CN111244936 A CN 111244936A CN 201911383787 A CN201911383787 A CN 201911383787A CN 111244936 A CN111244936 A CN 111244936A
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- power
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- delay controller
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- 230000009977 dual effect Effects 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000007935 neutral effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/28—Modifications for introducing a time delay before switching
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention provides a dual power supply switching box, which is characterized by comprising: the system comprises a double-power-supply change-over switch, a time-delay controller, a mains supply wiring terminal, an auxiliary power supply wiring terminal and a base station power supply terminal; the dual-power transfer switch comprises a first input end, a first output end, a second input end, a second output end and a switching control end; the time delay controller comprises a commercial power detection end and a control signal output end; the first input end of the double-power-supply changeover switch is respectively connected with a commercial power wiring terminal and a commercial power detection end of the time delay controller, the second input end of the double-power-supply changeover switch is connected with an auxiliary power wiring terminal, and the first output end and the second output end of the double-power-supply changeover switch are both connected with a base station power supply terminal; the switching control end of the dual power supply change-over switch is connected with the control signal output end of the delay controller. According to the double-power-supply switching box, stable power supply switching from commercial power and an auxiliary power supply to a base station is achieved through the double-power-supply changeover switch, and meanwhile the time delay controller controls the switching action of the double-power-supply changeover switch according to commercial power outage detection.
Description
Technical Field
The invention relates to the technical field of power supply equipment, in particular to a dual-power switching box.
Background
Many industries and departments have very high requirements on the reliability of power supply, in order to ensure the continuity of power supply, a plurality of important occasions adopt dual power supplies as essential devices for electric energy switching, the application requirements of dual power transfer switches are more and more extensive, and the technical performance requirements are more and more high.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a dual-power switching box.
The invention provides a dual power supply switching box, which comprises: the system comprises a double-power-supply change-over switch, a time-delay controller, a mains supply wiring terminal, an auxiliary power supply wiring terminal and a base station power supply terminal;
the dual-power transfer switch comprises a first input end, a first output end, a second input end, a second output end and a switching control end; the first input end and the first output end form a first conductive channel, and the second input end and the second output end form a second conductive channel;
the time delay controller comprises a commercial power detection end and a control signal output end;
the first input end of the double-power-supply changeover switch is respectively connected with a commercial power wiring terminal and a commercial power detection end of the time delay controller, the second input end of the double-power-supply changeover switch is connected with an auxiliary power wiring terminal, and the first output end and the second output end of the double-power-supply changeover switch are both connected with a base station power supply terminal; the switching control end of the dual power supply change-over switch is connected with the control signal output end of the delay controller.
Preferably, the commercial power wiring terminal, the auxiliary power wiring terminal, and the first input end, the first output end, the second input end and the second output end of the dual-power-supply change-over switch are all three-phase four-wire wiring terminals.
Preferably, the mains supply detection end of the time delay controller is respectively connected with the zero line of the first input end and any phase line of A, B, C through two wires.
Preferably, the mains supply detection end of the delay controller is connected with a mains supply alternating current power supply.
Preferably, the delay controller is connected with a direct current power supply.
Preferably, the delay controller is further provided with an auxiliary power supply control end, and the auxiliary power supply control end is used for being connected with an auxiliary power supply.
Preferably, the time delay controller judges whether the commercial power is powered off according to the potential of the first input end of the dual power transfer switch, and controls the dual power transfer switch to switch between the first conductive channel and the second conductive channel according to the judgment result.
Preferably, the time delay controller is used for controlling the action of the dual-power transfer switch when the mains supply is powered off and the auxiliary power supply is connected, so that the first conductive channel is disconnected and the second conductive channel is connected;
the time delay controller is used for sending a time delay control instruction to the dual-power transfer switch when the commercial power is electrified, and the dual-power transfer switch is used for controlling the first conductive channel to be connected and controlling the second conductive channel to be disconnected after delaying a preset time threshold according to the time delay control instruction.
Preferably, the preset time threshold is greater than or equal to 30s and less than or equal to 15 min.
Preferably, when the dual power transfer switch switches the conducting channel, the first conducting channel and the second conducting channel act simultaneously.
According to the double-power-supply switching box, mains electricity and auxiliary power supplies are switched to the base station through the double-power-supply changeover switch, and meanwhile the time delay controller controls the switching action of the double-power-supply changeover switch according to the mains electricity outage detection.
According to the invention, the time delay controller is connected with the dual-power transfer switch and is used for being connected with the first input terminal of the mains supply to carry out mains supply power failure detection, so that the accuracy of mains supply detection is ensured, and meanwhile, the wiring is simplified.
Drawings
Fig. 1 is a schematic circuit diagram of a dual power switching box according to the present invention.
Detailed Description
Referring to fig. 1, the dual power switching box provided by the invention includes: the system comprises a double-power-supply change-over switch, a time-delay controller, a commercial power wiring terminal, an auxiliary power wiring terminal and a base station power supply terminal.
The dual-power transfer switch comprises a first input end, a first output end, a second input end, a second output end and a switching control end. The first input end and the first output end form a first conductive path, and the second input end and the second output end form a second conductive path.
The time delay controller comprises a commercial power detection end and a control signal output end.
The first input end of the double-power-supply change-over switch is respectively connected with the commercial power wiring terminal and the commercial power detection end of the time delay controller, the second input end of the double-power-supply change-over switch is connected with the auxiliary power wiring terminal, and the first output end and the second output end of the double-power-supply change-over switch are both connected with the power supply terminal of the base station. The switching control end of the dual power supply change-over switch is connected with the control signal output end of the delay controller.
Therefore, in the embodiment, the commercial power wiring terminal is used for accessing commercial power, and the commercial power supplies power to the power supply terminal of the base station when the first conductive channel is in a conducting state, so that the power supply requirement of the base station is met. The auxiliary power supply terminal is connected with an auxiliary power supply, such as oil engine power generation equipment. When the second conductive channel is conducted, the auxiliary power supply supplies power to the power supply terminal of the base station, and the power supply requirement of the base station is met. Due to the working characteristic of the dual-power transfer switch, the first conductive channel and the second conductive channel are alternatively conducted.
In this embodiment, the switching of the dual power transfer switch is controlled by the delay controller, and the delay controller controls the dual power transfer switch to operate according to the detection of the commercial power detection end on the power failure of the commercial power. Specifically, in a normal state, the first conductive channel is switched on, and the second conductive channel is switched off, so that the mains supply supplies power to the base station; when the commercial power is cut off, the second conductive channel is switched to be conducted, and the auxiliary power supply supplies power to the base station so as to meet the power supply requirement of the base station.
In this embodiment, the commercial power connection terminal, the auxiliary power connection terminal, and the first input end, the first output end, the second input end, and the second output end of the dual power supply changeover switch are three-phase four-wire connection terminals. Therefore, the auxiliary power supply provides three-phase power to the power supply terminal of the base station through the dual-power transfer switch, so that the power supply of the auxiliary power supply can be switched in the same phase and in the same position with the mains supply, and the adverse effect of the power supply switching process on the work of the base station is avoided. Meanwhile, in the embodiment, the first input terminal and the second input terminal of the dual-power transfer switch are three-phase four-wire terminals, so that the electric signal processing of the power supply of the auxiliary power supply between the dual-power transfer switch is realized, and the stable operation and the stable power supply switching of the dual-power transfer switch are further ensured.
In this embodiment, the commercial power detection end of the delay controller is connected to the zero line of the first input end and any phase line of A, B, C through two wires. Therefore, the time delay controller can judge whether the mains supply has power failure according to the potential difference between the zero line and any one of the connected phase lines, and specifically, when the potential difference is 0, the mains supply has power failure; otherwise, the incoming call of the commercial power is indicated.
In this embodiment, the commercial power detection end of the delay controller is connected to the zero line and the C-phase line of the first input end through two wires. When the time delay controller is specifically implemented, the commercial power detection end of the time delay controller can be also arranged to be connected with a commercial power alternating current power supply so as to detect the commercial power supply condition.
In this embodiment, the delay controller is connected to a dc power supply for supplying power to the delay controller. Therefore, the reliability of the work of the delay controller is ensured by separating the power supply of the delay controller from the commercial power and the auxiliary power supply.
In this embodiment, the delay controller determines whether the commercial power is powered off according to the potential of the first input end of the dual power transfer switch, and controls the dual power transfer switch to switch between the first conductive channel and the second conductive channel according to the determination result. Specifically, the time delay controller is used for controlling the action of the dual-power transfer switch when the mains supply is powered off and the auxiliary power supply is connected, so that the first conductive channel is disconnected and the second conductive channel is controlled to be connected. The time delay controller is also used for sending a time delay control instruction to the dual power supply change-over switch when the commercial power is electrified, and the dual power supply change-over switch is used for controlling the first conductive channel to be connected and controlling the second conductive channel to be disconnected after delaying a preset time threshold according to the time delay control instruction.
Therefore, in the embodiment, in a normal state, the dual power transfer switch is in a working state of mains power supply, and when the mains power is cut off, the delay controller generates an instant control instruction to control the dual power transfer switch to be instantly switched to a working state of auxiliary power supply, namely, from the state that the first conductive channel is switched to the second conductive channel, so that instant switching from mains power supply to auxiliary power supply is realized, and power supply safety of the base station is ensured. When the mains supply is in a call, the delay controller generates a delay control instruction to control the dual-power-supply changeover switch to be switched to the working state of the mains supply in a delay mode, namely, the second conductive channel is switched to the first conductive channel in a conduction mode, and therefore the delay switching from the mains supply to the auxiliary power supply is achieved. Therefore, in the embodiment, when the commercial power is powered on, the dual-power-supply changeover switch switches the channel in a delayed manner, so that the auxiliary power supply still supplies power within a period of time of the incoming call of the commercial power and a preset time threshold value, and the transition from the auxiliary power supply to the commercial power is realized. Therefore, the power supply risk of voltage disturbance to the base station during the incoming call of the mains supply is avoided, and the working safety of the base station is ensured. Meanwhile, the power supply is switched to the commercial power supply in time, and the excessive consumption of the auxiliary power supply is also avoided.
Specifically, in the present embodiment, the preset time threshold is greater than or equal to 30s and less than or equal to 15 min.
In this embodiment, when the dual power transfer switch switches the conduction channel, the first conductive channel and the second conductive channel act simultaneously to ensure the instantaneous switching of the dual power, and avoid the power failure of the base station.
In this embodiment, the delay controller is further provided with an auxiliary power supply control terminal, and the auxiliary power supply control terminal is used for connecting an auxiliary power supply to send a switching signal to the auxiliary power supply. Specifically, when the time delay controller sends an instant switching instruction to the dual power supply changeover switch, a starting instruction is sent to the auxiliary power supply through the auxiliary power supply control end to control the auxiliary power supply to be turned on; when the delay controller sends a delay switching instruction to the dual-power transfer switch, the delay controller sends a delay closing instruction to the auxiliary power supply through the auxiliary power supply control end, so that the auxiliary power supply is closed while the dual-power transfer switch switches the power supply, and the meaningless loss of the auxiliary power supply is avoided.
In this embodiment, the delay controller generates the immediate control instruction or the delay control instruction according to the potential difference between the two electrical signals obtained by the commercial power detection terminal. Specifically, the mains supply detection end is used for generating a trigger signal '0' when the potential difference jumps to 0, and the delay controller generates an instant control instruction according to the trigger signal '0'; and the mains supply detection end is used for generating a trigger signal '1' after the potential difference jumps from 0, and the delay controller generates a delay control instruction according to the trigger signal '1'.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (10)
1. A dual power switching box, comprising: the system comprises a double-power-supply change-over switch, a time-delay controller, a mains supply wiring terminal, an auxiliary power supply wiring terminal and a base station power supply terminal;
the dual-power transfer switch comprises a first input end, a first output end, a second input end, a second output end and a switching control end; the first input end and the first output end form a first conductive channel, and the second input end and the second output end form a second conductive channel;
the time delay controller comprises a commercial power detection end and a control signal output end;
the first input end of the double-power-supply changeover switch is respectively connected with a commercial power wiring terminal and a commercial power detection end of the time delay controller, the second input end of the double-power-supply changeover switch is connected with an auxiliary power wiring terminal, and the first output end and the second output end of the double-power-supply changeover switch are both connected with a base station power supply terminal; the switching control end of the dual power supply change-over switch is connected with the control signal output end of the delay controller.
2. The dual power switching box of claim 1, wherein the mains connection terminal and the auxiliary power connection terminal, and the first input terminal, the first output terminal, the second input terminal, and the second output terminal of the dual power transfer switch are three-phase four-wire terminals.
3. The dual power switching box of claim 2, wherein the mains detection terminal of the delay controller is connected to the zero line and any one of the three phase lines of the first input terminal through two wires.
4. The dual power switching box of claim 3, wherein the mains detecting terminal of the delay controller is connected to the neutral line of the first input terminal and any phase line of A, B, C through two wires.
5. The dual power switching box of claim 1, wherein the mains detection terminal of the delay controller is connected to a mains ac power supply.
6. The dual power switching box of claim 1, wherein the delay controller is further provided with an auxiliary power control terminal for connecting to an auxiliary power.
7. The dual power switching box of claim 1, wherein the delay controller determines whether the commercial power is off according to a potential of the first input terminal of the dual power transfer switch, and controls the dual power transfer switch to switch between the first conductive channel and the second conductive channel according to the determination result.
8. The dual power switching box of claim 7, wherein the delay controller is configured to control the dual power transfer switch to open the first conductive path and to close the second conductive path when the utility power fails and the auxiliary power supply is connected;
the time delay controller is used for sending a time delay control instruction to the dual-power transfer switch when the commercial power is electrified, and the dual-power transfer switch is used for controlling the first conductive channel to be connected and controlling the second conductive channel to be disconnected after delaying a preset time threshold according to the time delay control instruction.
9. The dual power switching box of claim 8, wherein the predetermined time threshold is greater than or equal to 30s and less than or equal to 15 min.
10. The dual power transfer case of claim 7, wherein the first conductive path and the second conductive path operate simultaneously when the dual power transfer switch switches the conduction path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911383787.3A CN111244936A (en) | 2019-12-28 | 2019-12-28 | Dual-power switching box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911383787.3A CN111244936A (en) | 2019-12-28 | 2019-12-28 | Dual-power switching box |
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| CN111244936A true CN111244936A (en) | 2020-06-05 |
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| CN201911383787.3A Pending CN111244936A (en) | 2019-12-28 | 2019-12-28 | Dual-power switching box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653949A (en) * | 2020-07-03 | 2020-09-11 | 泰豪科技股份有限公司 | Control switch switching output integrated cabinet |
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| CN206077065U (en) * | 2016-08-27 | 2017-04-05 | 何春廷 | Auto switching electric source system |
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2019
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Patent Citations (9)
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| CN1379526A (en) * | 2001-03-29 | 2002-11-13 | 罗树林 | Three-power source automatic switching conversion monitoring screen |
| US20080203818A1 (en) * | 2007-02-27 | 2008-08-28 | Kinpo Electronics, Inc. | Double power sources switching circuit |
| CN201252421Y (en) * | 2008-06-19 | 2009-06-03 | 科泰电源设备（上海）有限公司 | Power automatic switching unit for communication base station |
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| CN111653949A (en) * | 2020-07-03 | 2020-09-11 | 泰豪科技股份有限公司 | Control switch switching output integrated cabinet |
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Application publication date: 20200605 |