CN220754415U - Double-loop low-voltage communication power supply control system - Google Patents
Double-loop low-voltage communication power supply control system Download PDFInfo
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- CN220754415U CN220754415U CN202322300750.8U CN202322300750U CN220754415U CN 220754415 U CN220754415 U CN 220754415U CN 202322300750 U CN202322300750 U CN 202322300750U CN 220754415 U CN220754415 U CN 220754415U
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Abstract
The utility model discloses a double-loop low-voltage interconnection power supply control system, which belongs to the technical field of low-voltage power supply inlet wire control and comprises a main power supply transformer low-voltage interconnection power supply, a slave power supply transformer low-voltage interconnection power supply, a power supply controller, an overhaul power supply box and a power cabinet for distributing power for each overhaul power supply box, wherein a contactor KM1 is arranged between the power supply controller and the power cabinet, the power supply controller comprises a relay KA1, a relay KA3 and a relay KA4, the relay KA3 is interlocked with the relay KA4, the relay KA4 is powered by the main power supply transformer low-voltage interconnection power supply to supply power to the contactor KM1, the relay KA1 is controlled by self-locking, the relay KA3 is powered by the slave power supply transformer low-voltage interconnection power supply to supply power to the contactor KM1, the relay KA1 is connected with a control switch, and the control switch is used for controlling the relay KA1 to be powered or powered off. The power supply box is electrified at all times through guaranteeing maintenance, so that maintenance efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of low-voltage power supply incoming line control, and particularly relates to a double-loop low-voltage communication power supply control system.
Background
The maintenance operation is an essential link for ensuring the production of factories and is also one of important operations for ensuring the continuous and good operation of equipment. However, due to the restriction of the on-site actual working condition and environmental factors, certain equipment cannot realize double-loop power supply, when a transformer and a distribution room perform electric overhaul operation, other overhaul operations cannot be performed normally due to power failure, so that the overhaul time is prolonged, the production cannot be recovered on time, the production efficiency of an enterprise is lower, and the economic benefit of the enterprise is greatly influenced.
Disclosure of Invention
The utility model aims to provide a double-loop low-voltage communication power supply control system, which aims to solve the problems in the prior art in the background technology.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a dual-circuit low pressure interconnection power control system, includes main power supply transformer low pressure interconnection power and from power supply transformer low pressure interconnection power for switch over main, from power supply transformer low pressure interconnection power's power controller, overhaul the power supply box and be used for the power cabinet of each maintenance power supply box distribution, set up contactor KM1 between power controller and the power cabinet, power controller includes relay KA1, relay KA3 and relay KA4 interlock, relay KA4 obtains electric main power supply transformer low pressure interconnection power and supplies power for contactor KM1, relay KA1 auto-lock control relay KA3 obtains the electricity, and relay KA3 obtains electric from power supply transformer low pressure interconnection power and supplies power for contactor KM1, and relay KA1 connects control switch, and control switch is used for controlling relay KA1 and obtains electricity or lose electricity.
Further, the control switch comprises a control button SB2 for connecting the control circuit and a control button SB1 for disconnecting the control circuit.
Further, the power supply controller comprises a relay KA2, the control switch comprises a change-over switch SA and a central control switch, the central control switch is connected with a normally closed point of the relay KA4 and the relay KA2, the central control switch is used for remotely controlling the relay KA2 to be powered on, the relay KA2 is powered on and is controlled by a self-locking control relay KA3 to be powered on, the change-over switch SA is used for switching between a manual mode and a remote control mode through control buttons SB1 and SB2 to be opened and closed, or in an automatic mode, the relay KA4 is controlled to be powered on through the central control switch remote control KA2, and the relay KA2 is powered off.
Further, the power supply controller is connected with a first voice broadcasting device HA1 and a second voice broadcasting device HA2, the second voice broadcasting device HA2 is communicated with the relay KA4, and the first voice broadcasting device HA1 is communicated with the relay KA 3.
Further, the power supply controller is connected with the LED rolling screen, and the LED rolling screen is used for displaying the current power supply.
Compared with the defects and shortcomings of the prior art, the utility model has the following beneficial effects.
1. The utility model provides a double-loop low-voltage interconnection power supply control system, which is characterized in that a power supply controller is used for switching a low-voltage interconnection power supply of a main power supply transformer or a low-voltage interconnection power supply of a slave power supply transformer to supply power to a contactor KM1, a relay KA4 is interlocked with a relay KA3 in the power supply controller, a control switch is arranged to control whether the relay KA1 is electrified, and the relay KA3 is electrified by the relay KA1 in a self-locking manner, so that power supply switching is realized, and when the transformer and a distribution room perform electric overhaul operation, a power cabinet and each overhaul power supply box are kept electrified, so that synchronous overhaul operation is ensured, overhaul duration is reduced, and enterprise production efficiency is ensured.
2. The power supply controller is provided with a change-over switch SA, a manual mode or an automatic mode is adjusted through the change-over switch SA, under the manual mode, the relay KA1 is controlled to be powered by self through control buttons SB1 and SB2, the relay KA3 is controlled to be powered by self through the relay KA1, the on-site near-end operation is convenient, under the automatic mode, the relay KA2 is controlled to be powered by self through the central control switch, the relay KA3 is controlled to be powered by the relay KA2, the remote operation is convenient, after maintenance is finished, the main power supply transformer is powered by a low-voltage contact power supply, the relay KA4 is powered by self, and a normally closed point connected with the relay KA2 in series is automatically disconnected, so that the automatic switching of a power supply circuit is realized.
Drawings
Fig. 1 is a schematic circuit diagram of a dual-loop low-voltage link power control system according to the present utility model.
FIG. 2 is a schematic diagram of a control relationship of a dual loop low voltage link power control system according to the present utility model.
In the figure: 1-a low-voltage interconnection power supply of a main power supply transformer; 2-supplying a transformer low-voltage interconnection power supply from a power supply; 3-a power supply controller; 4-a power cabinet; 5-overhauling a power supply box; 6-a first line; 7-a second line.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 and 2, a dual-loop low-voltage interconnection power supply control system comprises a main power supply transformer low-voltage interconnection power supply 1, a slave power supply transformer low-voltage interconnection power supply 2, a power supply controller 3, a contactor KM1, a power cabinet 4 and overhaul power supply boxes 5, wherein the power cabinet 4 is used for distributing power to each overhaul power supply box 5, and the power supply controller 3 is used for regulating and controlling the main power supply transformer low-voltage interconnection power supply 1 to supply power to the contactor KM1 or supplying power to the contactor KM1 from the power supply transformer low-voltage interconnection power supply 2.
The power supply controller 3 comprises a control switch, a relay KA1, a relay KA3 and a relay KA4, wherein the relay KA3 is interlocked with the relay KA4, and is electrically conducted through controlling the relay KA3 or the relay KA4, so that the main power supply transformer low-voltage interconnection power supply 1 is controlled to supply power or the main power supply transformer low-voltage interconnection power supply 2 is controlled to supply power, the relay KA4 is communicated with the main power supply transformer low-voltage interconnection power supply 1, the relay KA3 is communicated with the main power supply transformer low-voltage interconnection power supply 2, the control switch is used for controlling whether the relay KA1 is electrically conducted or not, whether the relay KA3 is electrically conducted or not is controlled through the relay KA1, a first circuit 6 used for communicating with the contactor KM1 and a second circuit 7 used for communicating with the contactor KM1 are arranged in a control loop of the power controller 3, wherein the first circuit 6 is provided with a normally open point of the relay KA4 and a normally closed point of the relay KA3, and the normally closed point of the relay KA3 are arranged, and the normally closed point of the relay KA3 is set by the second circuit 7, so that the main power supply transformer is in contact with the main power supply transformer 1.
In one embodiment, the control switch comprises a control button SB1 and a control button SB2, wherein the control button SB1 is used for disconnecting the line to enable the relay KA1 to lose electricity, the control button SB2 is used for conducting the line to enable the relay KA1 to be powered, the relay KA1 is powered self-locking, the relay KA3 is controlled to be powered, and the safe power supply of an operator at the near end is facilitated according to the field condition.
In one embodiment, the control switch comprises a change-over switch SA, a control button SB1, a control button SB2 and a central control switch, wherein the manual mode or the automatic mode is switched through the change-over switch SA, a relay KA2 is further arranged in the power supply controller and used for controlling whether the relay KA3 is electrically conducted in the automatic mode, the power supply is switched through manual operation of the control buttons SB1 and SB2 on site in the manual mode, the relay KA4 is provided with a normally closed point connected with the relay KA2 in series in the automatic mode and used for being disconnected when the main power supply transformer low-voltage interconnection power supply 1 supplies power, so that the automatic power supply switching is realized, the central control switch is used for controlling whether the relay KA2 is electrified, whether the relay KA3 is electrified or not so that the relay KA3 is electrified or not is controlled through the relay KA2, and when the power supply transformer low-voltage interconnection power supply 2 is required for ensuring power supply safety, the power supply is conducted from the power supply transformer low-voltage interconnection power supply 2 through on-site personnel feedback information, and a switching-on line is conducted through the remote control central control switch.
In one embodiment, the power controller 3 is connected to the voice broadcasting device and the LED rolling screen, and fully reminds the on-site operator through the mode of the sound image, so as to ensure personal safety of the operator, specifically, the voice broadcasting device includes a first voice broadcasting device HA1 and a second voice broadcasting device HA2, where the second voice broadcasting device HA2 is communicated with the relay KA4, and when the power is switched to the low-voltage communication power supply 1 of the main power supply transformer, the second voice broadcasting device HA2 broadcasts that the power is switched to the low-voltage communication power supply of the main power maintenance power supply transformer, the LED rolling screen rolls and displays that the power is switched to the low-voltage communication power supply of the main power maintenance power supply transformer, the first voice broadcasting device HA1 is communicated with the relay KA3, and when the power is switched to the low-voltage communication power supply 2 of the auxiliary power supply transformer, the first voice broadcasting device HA1 broadcasts that the power is switched to the low-voltage communication power supply of the auxiliary power supply maintenance power transformer, and the LED rolling screen rolls and displays that the power is switched to the low-voltage communication power supply of the auxiliary power supply transformer.
When the power supply transformer of the main power supply needs to be shut down for maintenance, each maintenance power supply box 5 is in a charged state at a required time in order not to influence the performance of other maintenance tasks. When the change-over switch SA rotates to the manual mode, the low-voltage contact power supply 2 of the power supply transformer is connected with control buttons SB1 and SB2, when safe power supply is confirmed on site, the control button SB2 is pressed down, the relay KA1 is electrically self-locked, the relay KA3 is electrically powered, at the moment, the normally open point of the relay KA3 positioned on the second circuit 7 is closed, the normally closed point of the relay KA3 positioned on the first circuit 6 is disconnected, the relay KA4 is in power failure due to the power failure of the main power supply line, the normally closed point of the relay KA4 positioned on the second circuit 7 is kept closed, the normally open point of the relay KA4 positioned on the first circuit 6 is kept open, at the moment, the second circuit 7 is communicated, the first circuit 6 is disconnected, the contactor KM1 is powered by the low-voltage contact power supply 2 of the power supply transformer, the first voice broadcasting device HA1 broadcasts that the power supply is switched to the low-voltage power supply of the power supply transformer, and meanwhile the LED rolling contact rolling display is switched to the power supply transformer to the low-voltage power supply, so as to remind operators of the low-voltage power supply maintenance; after maintenance is finished, a control button SB1 is pressed, the power supply from the low-voltage interconnection power supply 2 of the power supply maintenance power supply transformer is disconnected, the low-voltage interconnection power supply 1 of the main power supply transformer is switched on, the power supply is converted into the power supply of the low-voltage interconnection power supply 1 of the main power supply transformer at the moment, a relay KA4 is powered on, a relay KA3 is powered off, a first line 6 is communicated, a second line 7 is disconnected, the power supply 1 of the low-voltage interconnection power supply 1 of the main power supply transformer supplies power to the contactor KM1, and a second voice broadcasting device HA2 broadcasts that the power supply is switched to the power supply of the low-voltage interconnection power supply of the main power supply maintenance power supply transformer, and meanwhile, an LED rolling screen displays that the power supply is switched to the low-voltage interconnection power supply of the main power supply maintenance power supply transformer.
When the change-over switch SA is adjusted to an automatic mode, as the low-voltage interconnection power supply 1 of the main power supply transformer is disconnected, the relay KA4 loses electricity, the normally closed point of the relay KA4 connected with the central control switch is kept closed, in order to ensure the power supply safety, the field personnel feed back the safe power supply information to the remote control, the remote control personnel control the central control switch to be closed, the relay KA2 gets the power to be self-locking, the relay KA3 gets the power, the second circuit 7 is conducted, the contactor KM1 is powered by the low-voltage interconnection power supply 2 of the main power supply maintenance power supply transformer, the relay KA4 is powered on, the normally closed point of the relay KA4 connected in series with the relay KA2 is automatically disconnected, and the power supply of the low-voltage interconnection power supply 2 of the main power supply maintenance power supply transformer is disconnected.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (5)
1. The utility model provides a dual-circuit low voltage interconnection power supply control system, includes main power supply transformer low voltage interconnection power supply (1) and from power supply transformer low voltage interconnection power supply (2), is used for switching main, from power supply transformer low voltage interconnection power supply's power controller (3), overhauls power supply box (5) to and be used for each power cabinet (4) that overhauls power box (5) distribution, a serial communication port, set up contactor KM1 between power controller (3) and power cabinet (4), power controller (3) include relay KA1, relay KA3 and relay KA4 interlock, relay KA1 self-locking control relay KA3 gets the electricity for contactor KM1, relay KA3 gets the electricity and is connected control switch for controlling relay KA1 and gets electricity or lose.
2. The dual loop low voltage tie power control system of claim 1, wherein the control switch includes a control button SB2 for control circuit connection and a control button SB1 for control circuit disconnection.
3. The dual-loop low-voltage interconnection power supply control system according to claim 2, wherein the power supply controller (3) comprises a relay KA2, the control switch comprises a transfer switch SA and a central control switch, the central control switch is connected with a normally closed point of the relay KA4 and the relay KA2, the central control switch is used for remotely controlling the relay KA2 to be powered, the relay KA2 is powered and the self-locking control relay KA3 is powered, the transfer switch SA is used for switching on and off a near-end control circuit through control buttons SB1 and SB2 in a manual mode or remotely controlling the relay KA2 to be powered through the central control switch in an automatic mode, and the relay KA4 is controlled to be powered down.
4. The dual-loop low-voltage communication power supply control system according to claim 3, wherein the power supply controller (3) is connected with a first voice broadcasting device HA1 and a second voice broadcasting device HA2, the second voice broadcasting device HA2 is conducted with the relay KA4, and the first voice broadcasting device HA1 is conducted with the relay KA 3.
5. A dual-loop low-voltage tie power control system according to claim 3, characterized in that the power controller (3) is connected to an LED scroll screen for displaying the current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322300750.8U CN220754415U (en) | 2023-08-25 | 2023-08-25 | Double-loop low-voltage communication power supply control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322300750.8U CN220754415U (en) | 2023-08-25 | 2023-08-25 | Double-loop low-voltage communication power supply control system |
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| Publication Number | Publication Date |
|---|---|
| CN220754415U true CN220754415U (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322300750.8U Active CN220754415U (en) | 2023-08-25 | 2023-08-25 | Double-loop low-voltage communication power supply control system |
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| CN (1) | CN220754415U (en) |
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2023
- 2023-08-25 CN CN202322300750.8U patent/CN220754415U/en active Active
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