AC / DC integrated power supply system

Abstract

The utility model discloses an alternating-current and direct-current integrated power supply system, and relates to the technical field of alternating-current and direct-current integrated power supplies. A power supply control piece is mounted in the cabinet; the power supply control element comprises a direct current control unit and an alternating current control unit; wherein the direct current control unit comprises a transformer; the transformer is connected with the main circuit breaker; the transformer is also connected with the direct-current wiring terminal; a circuit breaker is arranged on one side of the transformer and is connected with the direct current socket; the alternating current control unit comprises an alternating current contactor; the alternating current contactor is connected with an intermediate relay through a lead; during use, the main circuit breaker and the transformer are connected with the circuit breakers, connection with the socket is realized through the circuit breakers, the main circuit breaker provides a power supply for the transformer, the transformer converts alternating current into direct current, and when the direct current is used, the direct current only needs to be connected with the direct current wiring terminal and the socket.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of AC / DC integrated power supply, in particular to an AC / DC integrated power supply system. Background Art

[0002] With the rapid development of the electric power industry, in order to improve the power supply quality of the power grid, make the power grid operate safely and economically, and realize the automation of the power system, the requirements for the key equipment of the power control system - the control power supply are getting higher and higher. It is of great significance to improve the overall operation and management level of the station power supply. It is widely used in power plants, substations, high-rise buildings, smart communities, user substations of factories and mines, distribution stations, self-provided power plants, small power plants, switchgears, railways, metallurgy, petrochemicals and other places that need DC operating power supplies and charging screens.

[0003] At present, the traditional AC and DC power supply system needs to go through two complete control systems when in use. Therefore, during installation, the internal structure of the equipment will be more and the floor space will be larger. In this way, when AC and DC power are transmitted, more equipment will pass through, which will increase the power loss.

[0004] After searching, Chinese patent publication number CN202122615572.9 is a DR-JYD AC / DC integrated power supply device; including: a control cabinet, a power cabinet, which is arranged on one side of the outer surface of the control cabinet and is used to store the power supply, a conversion knob, which is arranged in the control cabinet, and a conversion knob is installed on one side of the inner wall of the control cabinet near the center of the top edge, and a mounting mechanism, which is arranged in the control cabinet and the power cabinet and is used to carry each module inside;

[0005] The structure in the above patent also needs to install multiple groups of batteries inside the control cabinet to connect the wires, and then connect the components through the wires. In this way, it is impossible to effectively distinguish between DC and AC during the connection, which may cause load damage during use. When the structure in the above patent is in use, normal equipment connection cannot be performed at the ends of the DC unit and the AC unit.

[0006] In view of the above situation, we provide an AC / DC integrated power supply system. In this device, the DC unit and the AC unit are fixedly installed in the same cabinet, wherein the transformer arranged in the DC unit realizes AC / DC conversion, and the DC power is effectively connected to the equipment through the DC terminal, and the AC contactor arranged in the AC unit is connected to the main circuit breaker; the normally closed or normally open in the AC contactor is effectively switched on and off through the instructions in the PLC controller transmitted by the intermediate relay, so that the load terminal is energized or de-energized, thereby realizing the control of the load. Utility Model Content

[0007] The purpose of the utility model is to provide an AC / DC integrated power supply system. In this device, AC / DC is converted into DC through a voltage converter to achieve direct current control. The signal transmitted in the PLC controller is effectively executed through an AC contactor to achieve control of the load terminal and the load device. This device can effectively control the DC and current connected loads at the same time to solve the problems of the above-mentioned background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] An AC / DC integrated power supply system comprises a cabinet; a power supply control unit is installed inside the cabinet; the power supply control unit comprises a DC control unit and an AC control unit; wherein the DC control unit comprises a transformer; the transformer is connected to a main circuit breaker; the transformer is also connected to a DC wiring terminal; a circuit breaker is provided on one side of the transformer, and the circuit breaker is connected to a DC socket; the AC / DC is converted to DC through a voltage converter, a DC-controlled device is connected to the DC wiring terminal, and the socket is connected to the device through the connection between the circuit breaker and the main circuit breaker;

[0010] As a further technical solution of the utility model, the AC control unit includes an AC contactor, which is connected to an intermediate relay through a wire; in the AC control unit, the instructions input by the PLC controller are effectively executed through the AC contactor to achieve effective control of the AC control unit;

[0011] As a further technical solution of the utility model, the intermediate relay is also connected to a PLC controller for inputting instructions; the AC contactor and the intermediate relay are controlled by the PLC controller;

[0012] As a further technical solution of the utility model, the load terminals in the AC control unit are connected to the AC contactor, and the load terminals are controlled by the normally closed or normally open switch in the AC contactor, and the on or off of the switch in the AC contactor realizes the control of the load terminals;

[0013] As a further technical solution of the utility model, the AC contactor is also connected to the main circuit breaker; the main circuit breaker is used to transmit power to the AC contactor;

[0014] As a further technical solution of the utility model, the ends of the DC control unit and the AC control unit are connected to the load through a socket and a load terminal respectively, and effective control of the DC-connected equipment is achieved through the DC terminal and the socket, and effective on-off control of the AC-controlled equipment is effectively achieved through the load terminal.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] When the utility model is used, the main circuit breaker and the transformer are connected to the circuit breaker, and the connection with the socket is realized through the circuit breaker. The main circuit breaker provides power to the transformer, and the transformer converts AC power into DC power. When using DC power, it only needs to be connected to the DC wiring terminal and the socket;

[0017] In the utility model, the main circuit breaker is also connected to the AC contactor, and the AC contactor is also connected to the PLC controller through the intermediate relay. The PLC controller issues an instruction to control the corresponding intermediate relay to be attracted, and the AC contactor is energized to be attracted, and its auxiliary contacts are connected, and the load wiring terminals are energized to realize load operation;

[0018] In the utility model, in the device, the transformer and the AC contactor are energized through the power provided by the main circuit breaker, so that the load connected with the DC power and the load connected with the AC power are effectively controlled at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0020] Figure 2 This utility model Figure 1 Side view of.

[0021] Figure 3 This utility model Figure 1 Circuit block diagram of .

[0022] In the figure: 1-cabinet, 2-main circuit breaker, 3-transformer, 4-circuit breaker, 5-DC power terminal, 6-socket, 7-intermediate relay, 8-AC contactor, 9-load terminal, 10-PLC controller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-3 In the embodiment of the utility model, the AC / DC integrated power supply system includes a cabinet 1; a power supply control component is installed inside the cabinet 1; the power supply control component includes a DC control unit and an AC control unit; wherein the DC control unit includes a transformer 3; the transformer 3 is connected to the main circuit breaker 2; the transformer 3 is also connected to the DC terminal 5; a circuit breaker 4 is provided on one side of the transformer 3, and the circuit breaker 4 is connected to the DC socket 6;

[0025] The AC power control unit comprises an AC contactor 8 , which is connected to an intermediate relay 7 via a wire.

[0026] To be more specific, a cable through hole 104 is provided at the top of the controller installation cavity 103; a motor control line through hole 1010 is provided at the connection between the motor placement cavity 101 and the differential installation cavity 102 for the motor control line to pass through; and the intermediate relay 7 is also connected to the PLC controller 10 for inputting instructions.

[0027] By adopting the above technical solution, when in use, the main circuit breaker 2 and the transformer 3 are connected to the circuit breaker 4, and the connection with the socket 6 is realized through the circuit breaker 4. The main circuit breaker 2 provides power to the transformer 3, and the transformer 3 converts AC power into DC power. When using DC power, it only needs to be connected to the DC terminal 5 and the socket 6;

[0028] The load terminal 9 in the AC power control unit is connected to the AC contactor 8 and is controlled by a normally closed or normally open switch in the AC contactor 8 .

[0029] In this embodiment, the AC contactor 8 is also connected to the main circuit breaker 2 .

[0030] By adopting the above technical solution, the main circuit breaker 2 is also connected to the AC contactor 8, and the AC contactor 8 is also connected to the PLC controller 10 through the intermediate relay 7. The PLC controller 10 issues an instruction to control the corresponding intermediate relay 7 to be energized, and the AC contactor 8 is energized to be energized, connecting its auxiliary contacts, and energizing the load terminal 9 to realize load operation.

[0031] In this embodiment, the ends of the DC control unit and the AC control unit are connected to the load via the socket 6 and the load terminal 9 respectively.

[0032] By adopting the above technical solution, in this device, the transformer 3 and the AC contactor 8 are energized through the power provided by the main circuit breaker 2, so that the load connected to the DC power and the load connected to the AC power are effectively controlled at the same time.

[0033] The working principle of the utility model is: when in use, the main circuit breaker 2 and the transformer 3 are connected to the circuit breaker 4, and the connection with the socket 6 is realized through the circuit breaker 4. The main circuit breaker 2 provides power to the transformer 3, and the transformer 3 converts the alternating current into direct current. When using direct current, it only needs to be connected to the DC terminal 5 and the socket 6;

[0034] The main circuit breaker 2 is also connected to the AC contactor 8, and the AC contactor 8 is also connected to the PLC controller 10 through the intermediate relay 7. The PLC controller 10 issues an instruction to control the corresponding intermediate relay 7 to be attracted, and the AC contactor 8 is energized to be attracted, and its auxiliary contacts are connected, and the load terminal 9 is energized to realize load operation;

[0035] In the present device, the transformer 3 and the AC contactor 8 are energized by the power provided by the main circuit breaker 2, so that the loads connected to the DC power and the loads connected to the AC power are effectively controlled simultaneously.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. AC / DC integrated power supply system, characterized by: The invention comprises a cabinet (1); a power supply control unit is installed inside the cabinet (1); the power supply control unit comprises a direct current control unit and an alternating current control unit; wherein the direct current control unit comprises a transformer (3); the transformer (3) is connected to a main circuit breaker (2); the transformer (3) is also connected to a direct current connection terminal (5); a circuit breaker (4) is arranged on one side of the transformer (3); the circuit breaker (4) is connected to a direct current socket (6); The AC power control unit comprises an AC contactor (8), which is connected to an intermediate relay (7) via a wire.

2. The AC / DC integrated power supply system according to claim 1, characterized in that: The intermediate relay (7) is also connected to a PLC controller (10) for inputting instructions.

3. The AC / DC integrated power supply system according to claim 1, characterized in that: The load connection terminal (9) in the AC power control unit is connected to the AC contactor (8) and is controlled by a normally closed or normally open switch in the AC contactor (8).

4. The AC / DC integrated power supply system according to claim 3, characterized in that: The AC contactor (8) is also connected to the main circuit breaker (2).

5. The AC / DC integrated power supply system according to claim 4, characterized in that: The ends of the direct current control unit and the alternating current control unit are connected to the load via a socket (6) and a load terminal (9) respectively.

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