CN215835311U - Automatic load balancing power distributor - Google Patents
Automatic load balancing power distributor Download PDFInfo
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- CN215835311U CN215835311U CN202120904529.1U CN202120904529U CN215835311U CN 215835311 U CN215835311 U CN 215835311U CN 202120904529 U CN202120904529 U CN 202120904529U CN 215835311 U CN215835311 U CN 215835311U
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Abstract
The utility model relates to the field of power transmission and distribution devices, in particular to a power distributor capable of automatically balancing loads. The power supply and the at least one group of power distributor groups capable of realizing load power distribution balance are included, and each group of power distributor groups comprises at least one power distributor; the output end of the power supply distributor is connected with a load plug; any two-phase output port is connected with a power supply distributor, the power supply distributor comprises a built-in automatic change-over switch, and the input of the automatic change-over switch is the output of any two phases of the three-phase power supply; the automatic change-over switches of all the output ports input the three-phase power supply output in a uniform sequence, the power supply output ports have a load measuring function, and measured data can be acquired by the master control system in real time.
Description
Technical Field
The utility model relates to the field of power transmission and distribution devices, in particular to a power distributor capable of automatically balancing loads.
Background
The existing power distributor technology cannot perform any type of adjustment when the load is unbalanced, and only can realize load balancing by manually changing the connection of a power supply system by a user. And when the load is seriously unbalanced and still keeps running, if the power consumption of the load fluctuates, the overloaded circuit breaker can be triggered, and the power failure of the whole circuit is further caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to automatically adjust the load distribution and keep the load continuously and uninterruptedly running when the load is seriously unbalanced.
The technical scheme of the utility model is as follows:
the power distributor with automatic load balancing comprises a power supply and at least one group of power distributor groups capable of realizing load power distribution balancing, wherein each group of power distributor groups comprises at least one power distributor; and the output end of the power supply distributor is connected with a load plug.
The power supply is a three-phase alternating current power supply, and the power supply distributor group comprises three power supply distributors; the three power distributors are respectively a first power distributor, a second power distributor and a third power distributor; the first-phase alternating current power supply and the second-phase alternating current power supply of the three-phase alternating current power supply are selectively output through the first power supply distributor, the second-phase alternating current power supply and the third-phase alternating current power supply of the three-phase alternating current power supply are selectively output through the second power supply distributor, and the first-phase alternating current power supply and the third-phase alternating current power supply of the three-phase alternating current power supply are selectively output through the third power supply distributor.
The power supply distributor comprises a built-in automatic change-over switch and a measuring unit connected with the built-in automatic change-over switch.
The measuring unit comprises a main input circuit and a secondary input circuit; the main input circuit and the secondary input circuit are respectively connected with a first switch contact pin group and a second switch contact pin group of the built-in automatic change-over switch.
The main input circuit and the secondary input circuit both comprise a switch relay and a current sensor which are sequentially connected in series, the current sensor is connected with the input end of the controller, and the output end of the controller is connected with the switch relay.
The controller is a single chip microcomputer.
The utility model has the beneficial effects that: any two-phase output port is connected with a power supply distributor, the power supply distributor comprises a built-in automatic change-over switch, and the input of the automatic change-over switch is the output of any two phases of the three-phase power supply; the automatic change-over switches of all the output ports input the three-phase power supply output in a uniform sequence, the power supply output ports have a load measuring function, and measured data can be acquired by the master control system in real time.
Drawings
The foregoing and other objects, features, and advantages of the utility model will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Wherein: FIG. 1 is a schematic diagram of the principles of the present invention;
FIG. 2 is a schematic diagram of a measurement unit circuit according to the present invention;
FIG. 3 is a schematic flow chart of the present invention;
FIG. 4 is a schematic diagram of an embodiment of the present invention;
in the figure, 1 is a power supply, 2 is a power distributor, 3 is a load plug, 4 is a built-in automatic change-over switch, 5 is a measuring unit, 6 is a main input circuit, 7 is a switch relay, 8 is a current sensor, and 9 is a secondary input circuit.
Detailed Description
Referring to fig. 1, the power distributor with automatic load balancing includes a power source 1 and at least one power distributor group capable of achieving load power distribution balancing, where each power distributor group includes at least one power distributor 2; and the output end of the power supply distributor is connected with a load plug 3. When the ac power supply is a three-phase ac power supply, a plurality of power distributor groups may be employed, where the power distributors in each power distributor group correspond to the number of phases of the three-phase ac power supply.
The power supply is a three-phase alternating current power supply, and the power supply distributor group comprises three power supply distributors; the three power distributors are respectively a first power distributor, a second power distributor and a third power distributor; the first-phase alternating current power supply and the second-phase alternating current power supply of the three-phase alternating current power supply are selectively output through the first power supply distributor, the second-phase alternating current power supply and the third-phase alternating current power supply of the three-phase alternating current power supply are selectively output through the second power supply distributor, and the first-phase alternating current power supply and the third-phase alternating current power supply of the three-phase alternating current power supply are selectively output through the third power supply distributor. Any two-phase output port is connected with a power supply distributor, the power supply distributor comprises a built-in Automatic Transfer Switch (ATS)4, and the input of the automatic transfer switch is the output of any two phases of the three-phase power supply; the automatic change-over switches of all the output ports input the three-phase power supply output in a uniform sequence, the power supply output ports have a load measuring function, and measured data can be acquired by the master control system in real time.
The power supply is a single-phase PUD power supply, and at least two circuit breakers are connected to the PUD power supply; and the two breakers of the PUD power supply are selectively output through the power supply distributor. Load balance among different circuit breakers of the single-phase PDU is adjusted, a single-phase PDU power supply is generally provided with 2 to 3 circuit breakers, and when the load among the circuit breakers is unbalanced, the circuit breakers can be tripped.
The power distributor comprises a built-in Automatic Transfer Switch (ATS) and a measuring unit 5 connected to the built-in automatic transfer switch. The measuring unit is used for detecting a current signal in the load circuit to judge whether power consumption of the power supply is balanced or not, and when the power consumption is unbalanced, the main input is switched to the secondary input through the ATS.
The measuring unit comprises a main input circuit and a secondary input circuit; the main input circuit and the secondary input circuit are respectively connected with a first switch contact pin group and a second switch contact pin group of the built-in automatic change-over switch. During normal operation, a load connected to the output port takes electricity from one phase of UWV; when three phases are unbalanced and balance needs to be adjusted, the main control circuit cuts off the main input of the ATS of the output port through the switch relay, so that the ATS is converted into a secondary input.
The main input circuit 6 and the secondary input circuit 9 both comprise a switch relay 7 and a current sensor 8 which are sequentially connected in series, the current sensor is connected with the input end of the controller, and the output end of the controller is connected with the switch relay. The current sensor is used for detecting a current signal in the circuit and transmitting the signal to the controller, and the controller judges the on-off of the switch relay through data transmitted by the current sensor.
The controller is a single chip microcomputer. The cost is low by adopting the singlechip.
The following illustrates the principles of the utility model:
u, W, V in fig. 1 are three phases of three-phase alternating current, and output ports 1 to 6 are connected to UV, either UW or VW through M (measurement circuit), ATS, relay switch circuit; when the circuit works normally, a load connected to an output port of the C3 gets electricity from one phase of UWV, and when three-phase imbalance needs to adjust balance, the main control circuit cuts off the main input of the ATS of the output port to enable the ATS to be converted into a secondary input, so that the power supply of the load is switched from one phase to the other phase.
The following is the principle of use of the measuring unit:
referring to fig. 2, which is a schematic circuit diagram of a complete channel, each channel is connected to any two-phase input of three-phase alternating current, in the example of fig. 2, the inputs are U-phase and V-phase, the two-phase inputs are connected to the input of the ATS switching relay through a switching relay, a current sensor, and the driving windings ( pins 0 and 1 of S5) of the ATS switching relay are connected to the main input. When regulation is not needed on the load socket CN2, the ATS drive winding is driven by the U phase, the output pins 4 and 8 of the ATS double-pole double-position switch are connected to the U phase power supply of the pins 3 and 7, when a main control (a single chip microcomputer or other processors) detects that the load connected to the CN2, which needs to be driven by the U phase, needs to be switched to the V phase, the single chip microcomputer stops to the drive output pin S4, the U phase live wire is disconnected by the S4, the drive winding of the S5 is de-energized, and the double-pole double-throw switch switches the output pins 4 and 8 to the pins 2 and 6, so that the load is connected to the V phase power supply.
Referring to fig. 4, which is an implementation example diagram, the imbalance of 6 uneven loads is distributed on the UVW three phases, which is a typical connection of a power distributor without automatic load balancing, and the input phases of ATS of each load on the table are labeled, in the following example, before the load balancing is adjusted, the U phase and the W phase are seriously unbalanced, and after the adjustment, the UVW three phases are unbalanced by no more than 30%, and the adjustment is realized by cutting off the main input of the ATS corresponding to the outputs 1 and 5 to switch to the secondary input.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.
Claims (6)
1. The power distributor capable of automatically balancing loads is characterized by comprising a power supply and at least one group of power distributor groups capable of realizing load power distribution balance, wherein each group of power distributor groups comprises at least one power distributor; and the output end of the power supply distributor is connected with a load plug.
2. The auto-load balancing power distributor according to claim 1, wherein the power source is a three-phase ac power source, the power distributor group comprising three power distributors; the three power distributors are respectively a first power distributor, a second power distributor and a third power distributor; the first-phase power supply and the second-phase power supply of the three-phase alternating-current power supply are output through the first power supply distributor, the second-phase power supply and the third-phase power supply of the three-phase alternating-current power supply are output through the second power supply distributor, and the first-phase power supply and the third-phase power supply of the three-phase alternating-current power supply are output through the third power supply distributor.
3. The power distributor for automatic load balancing according to any of claims 1-2, comprising a built-in automatic transfer switch and a measuring unit connected to the built-in automatic transfer switch.
4. The auto-load balancing power distributor according to claim 3, wherein the measurement unit comprises a primary input circuit and a secondary input circuit; the main input circuit and the secondary input circuit are respectively connected with a first switch contact pin group and a second switch contact pin group of the built-in automatic change-over switch.
5. The auto-load balancing power distributor according to claim 4, wherein the primary input circuit and the secondary input circuit each comprise a switch relay and a current sensor connected in series in sequence, the current sensor is connected to an input of the controller, and an output of the controller is connected to the switch relay.
6. The auto-load balancing power distributor according to claim 5, wherein the controller is a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120904529.1U CN215835311U (en) | 2021-04-28 | 2021-04-28 | Automatic load balancing power distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120904529.1U CN215835311U (en) | 2021-04-28 | 2021-04-28 | Automatic load balancing power distributor |
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| Publication Number | Publication Date |
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| CN215835311U true CN215835311U (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120904529.1U Active CN215835311U (en) | 2021-04-28 | 2021-04-28 | Automatic load balancing power distributor |
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| CN (1) | CN215835311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117767965A (en) * | 2024-01-10 | 2024-03-26 | 荣耀终端有限公司 | Power supply and load switching circuit, low noise amplifier and electronic equipment |
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2021
- 2021-04-28 CN CN202120904529.1U patent/CN215835311U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117767965A (en) * | 2024-01-10 | 2024-03-26 | 荣耀终端有限公司 | Power supply and load switching circuit, low noise amplifier and electronic equipment |
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