Power supply and valve base control equipment

Abstract

The invention provides a power supply and valve base control equipment. The power supply comprises a first power panel, a second power panel, a backboard and a functional board card. The back plate comprises a first connecting piece and a second connecting piece. The first power panel and the functional board card are respectively connected with the first connecting piece, and the second power panel and the functional board card are respectively connected with the second connecting piece. The first power board is used for supplying power to the functional board card through the first connecting piece. The second power board is used for supplying power to the functional board card through the second connecting piece. According to the invention, two-path independent power supply of the functional board card is realized, that is, dual-redundancy power supply of the functional board card is realized, and the power supply reliability of the functional board card is greatly improved. Two power supply channels are established through the first connecting piece and the second connecting piece. Under the condition that one power supply channel breaks down, reliable power supply of the functional board card can be achieved through the other power supply channel, that is, normal work of the functional board card is achieved, and the utilization rate of the functional board card is improved.

Description

Technical Field

[0001] The present application relates to the field of direct current power transmission technology, and in particular to a power supply and a valve base control device. Background Art

[0002] DC transmission mainly includes traditional DC transmission with line commutated converter (LCC) as the core and flexible DC transmission with voltage source converter (VSC) as the core.

[0003] The valve-based controller (VBC) of the converter (i.e. LCC or VSC) is mainly responsible for the operation control and safety protection of the converter. Therefore, the operation reliability of the VBC is directly related to the safety and stability of the converter. As the life source of the valve-based controller, the power supply must be redundant.

[0004] The power supply provided by the related art often uses a one-way power supply on the backplane. If a power short circuit occurs on the backplane, the entire valve base control device will stop working. It can be seen that the power supply reliability of the power supply provided by the related art is low. Summary of the invention

[0005] In order to solve the problem of low power supply reliability in the prior art, the present application provides a power supply, which may include: a first power board, a second power board, a backplane and a functional board.

[0006] The backplane includes a first connecting member and a second connecting member. The first power board and the function board are connected to the first connecting member respectively, and the second power board and the function board are connected to the second connecting member respectively.

[0007] The first power board is used to supply power to the functional board through the first connecting member.

[0008] The second power board is used to supply power to the functional board through the second connecting member.

[0009] In some possible implementations, the first power board includes a first conversion circuit.

[0010] The first conversion circuit is used to convert the level of the first power supply voltage to obtain a third power supply voltage and provide it to the functional board card.

[0011] The level of the first power supply voltage is greater than the level of the third power supply voltage.

[0012] Optionally, the first supply voltage is an AC voltage and the third supply voltage is a DC voltage. Then, the first conversion circuit plays a rectifying role.

[0013] Alternatively, the first power supply voltage and the third power supply voltage are both DC voltages. Then, the first conversion circuit plays a role of DC conversion.

[0014] Furthermore, the first power board also includes a first protection circuit.

[0015] The first protection circuit is used to protect the first conversion circuit from overvoltage, undervoltage or overcurrent, and is also used to transmit the fault state of the first power board to the functional board through the first conversion circuit and the first connector.

[0016] In some other possible implementations, the second power board includes a second conversion circuit.

[0017] The second conversion circuit is used to convert the level of the second power supply voltage to obtain a fourth power supply voltage and provide it to the functional board.

[0018] The level of the second power supply voltage is greater than the level of the fourth power supply voltage.

[0019] Optionally, the second supply voltage is an AC voltage and the fourth supply voltage is a DC voltage. Then, the second conversion circuit plays a rectifying role.

[0020] Alternatively, the second power supply voltage and the fourth power supply voltage are both DC voltages. Then, the second conversion circuit plays a role of DC conversion.

[0021] Furthermore, the second power board also includes a second protection circuit.

[0022] The second protection circuit is used to protect the second conversion circuit from overvoltage, undervoltage or overcurrent, and is also used to transmit the fault state of the second power board to the functional board through the second conversion circuit and the second connector.

[0023] In yet another possible implementation, the function board includes a first hot-swap protection circuit, a second hot-swap protection circuit, a combining circuit, and a main control circuit.

[0024] The input end of the first hot-swap protection circuit is connected to the first connector, the input end of the second hot-swap protection circuit is connected to the second connector, the output ends of the first hot-swap protection circuit and the second hot-swap protection circuit are respectively connected to the input end of the combining circuit, and the output end of the combining circuit is connected to the main control circuit.

[0025] Optionally, the first hot-swap protection circuit is used to: perform overvoltage, undervoltage or overcurrent protection on the combining circuit, and to provide a third power supply voltage to the combining circuit.

[0026] The second hot-swap protection circuit is used to: perform overvoltage, undervoltage or overcurrent protection on the combining circuit, and is also used to provide a fourth power supply voltage to the combining circuit.

[0027] The combining circuit is used to adjust the third power supply voltage and the fourth power supply voltage to the working voltage required by the main control circuit and provide them to the main control circuit.

[0028] Exemplarily, both the first connecting member and the second connecting member are made of metal material.

[0029] On the other hand, the present application also provides a valve base control device, which may include the above-mentioned power supply.

[0030] Compared with the prior art, the beneficial effects of this application are:

[0031] The power supply provided in the present application may include a first power board, a second power board, a backplane and a functional board. The backplane includes a first connector and a second connector. The first power board and the functional board are respectively connected to the first connector, and the second power board and the functional board are respectively connected to the second connector. The first power board is used to supply power to the functional board through the first connector. The second power board is used to supply power to the functional board through the second connector. It can be seen that the present application realizes two independent power supplies for the functional board through the first connector and the second connector, that is, realizes dual redundant power supply for the functional board, which greatly improves the power supply reliability of the functional board, that is, the power supply reliability of the power supply provided in the present application is high.

[0032] In the present application, the backplane does not need to be provided with active devices, that is, the backplane is not provided with capacitors or resistors, etc., that is, the backplane is a passive design, which avoids the loss of power supply due to failure of a single active device due to a short circuit.

[0033] The present application establishes a first power supply channel through a first power board and a first connector, and establishes a second power supply channel through a second power board and a second connector. In the event of a failure in one of the power supply channels, the functional board can be reliably powered through the other power supply channel, that is, the functional board can operate normally, thereby improving the utilization rate of the functional board. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A schematic structural diagram of a power supply in an embodiment of the present application;

[0036] Figure 2 A schematic structural diagram of a first power board in an embodiment of the present application;

[0037] Figure 3 is a schematic structural diagram of a second power board in an embodiment of the present application;

[0038] Figure 4 This is a schematic structural diagram of a functional board in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0040] The terms "first", "second", etc. in the specification embodiments, claims, and drawings of the present application are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, including a series of steps or units. The method, system, product, or device is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0041] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0042] The present application provides a power supply, such as Figure 1 As shown. The power supply 10 includes a first power board 11, a second power board 12, a backboard 13 and a function board 14. Among them, the function board 14 can be a main control board or a trigger monitoring board. Among them, the main control board mainly realizes the trigger instruction generation, monitoring and protection of the converter. The trigger monitoring board mainly realizes the expansion of the communication interface between the main control board and the semiconductor device in the converter.

[0043] The backplane 13 includes a first connector 131 and a second connector 132. The first power board 11 and the function board 14 are connected to the first connector 131 respectively, and the second power board 12 and the function board 14 are connected to the second connector 132 respectively.

[0044] The first power board 11 is used to supply power to the function board 14 via the first connecting member 131 .

[0045] The second power board 12 is used to supply power to the function board 14 via the second connecting member 132 .

[0046] In some possible implementations, such as Figure 2 As shown, the first power board 11 includes a first conversion circuit 111 .

[0047] The first conversion circuit 111 is used to convert the level of the first power supply voltage V1 to obtain a third power supply voltage V3 and provide it to the function board 14 .

[0048] The level of the first power supply voltage V1 is greater than the level of the third power supply voltage V3. Therefore, the first conversion circuit 111 plays a role of voltage reduction.

[0049] Optionally, the first supply voltage is an AC voltage V1 and the third supply voltage V3 is a DC voltage. Then, the first conversion circuit 111 plays a rectifying role.

[0050] Alternatively, the first power supply voltage V1 and the third power supply voltage V3 are both DC voltages. Then, the first conversion circuit 111 plays a role of DC conversion.

[0051] In the embodiment of the present application, the first power supply voltage V1 may be a 110V DC voltage, a 220V DC voltage, or a 220V AC voltage. The third power supply voltage V3 may be a 5V DC voltage or a 24V DC voltage.

[0052] For further reference, Figure 2 The first power board 11 also includes a first protection circuit 112 .

[0053] The first protection circuit 112 is used to protect the first conversion circuit 111 from overvoltage, undervoltage or overcurrent, and is also used to transmit the fault state of the first power board 11 to the functional board 14 through the first conversion circuit 111 and the first connector 131 .

[0054] Continue to refer Figure 2 The first power board 11 also includes a diode D1, which can prevent energy backflow after the first power board 11 fails.

[0055] In some other possible implementations, such as Figure 3 As shown, the second power board 12 includes a second conversion circuit 121 .

[0056] The second conversion circuit 121 is used to convert the level of the second power supply voltage V2 to obtain a fourth power supply voltage V4 and provide it to the function board 14 .

[0057] The level of the second power supply voltage V2 is greater than the level of the fourth power supply voltage V4. Therefore, the second conversion circuit 121 plays a role of voltage reduction.

[0058] Optionally, the second supply voltage V2 is an AC voltage and the fourth supply voltage V4 is a DC voltage. Then, the second conversion circuit 121 plays a rectifying role.

[0059] Alternatively, the second power supply voltage V2 and the fourth power supply voltage V4 are both DC voltages. Then, the second conversion circuit 121 plays a role of DC conversion.

[0060] In the embodiment of the present application, the second power supply voltage V2 may be a 110V DC voltage, a 220V DC voltage, or a 220V AC voltage. The fourth power supply voltage V4 may be a 5V DC voltage or a 24V DC voltage.

[0061] For further reference, Figure 3 The second power board 12 also includes a second protection circuit 122 .

[0062] The second protection circuit 122 is used to protect the second conversion circuit 121 from overvoltage, undervoltage or overcurrent, and is also used to transmit the fault state of the second power board 12 to the functional board 14 through the second conversion circuit 121 and the second connector 132 .

[0063] Continue to refer Figure 3 The second power board 12 also includes a diode D2, which can prevent energy backflow after the second power board 12 fails.

[0064] In another possible implementation, Figure 4 As shown, the function board 14 includes a first hot-swap protection circuit 141 , a second hot-swap protection circuit 142 , a combining circuit 143 and a main control circuit 144 .

[0065] The input end of the first hot plug protection circuit 141 is connected to the first connector 131, the input end of the second hot plug protection circuit 142 is connected to the second connector 132, the output ends of the first hot plug protection circuit 141 and the second hot plug protection circuit 142 are respectively connected to the input end of the combiner circuit 143, and the output end of the combiner circuit 143 is connected to the main control circuit 144.

[0066] Optionally, the first hot-swap protection circuit 141 is used to: perform overvoltage, undervoltage or overcurrent protection on the combining circuit 143 , and to provide a third power supply voltage to the combining circuit 143 .

[0067] The second hot-swap protection circuit 142 is used to protect the combining circuit 143 from overvoltage, undervoltage or overcurrent, and to provide the fourth power supply voltage to the combining circuit 143 .

[0068] The combining circuit 143 is used to adjust the third power supply voltage and the fourth power supply voltage to the working voltage required by the main control circuit 144 and provide the voltage to the main control circuit 144 .

[0069] Of course, the function board 14 may also include other circuits, etc., which is not limited in the embodiment of the present application.

[0070] In the embodiment of the present application, the first hot-swap protection circuit 141 and the second hot-swap protection circuit 142 can use the TPS2421 chip, which has over-current protection and short-circuit protection functions. The combining circuit 143 can use the FDS8880 chip in combination with the LM5050 chip.

[0071] Exemplarily, the first connecting member 131 and the second connecting member 132 are both made of metal material, which may be copper or the like, and is not limited in the present embodiment.

[0072] The embodiment of the present application also provides a valve base control device, which may include the above-mentioned power supply. Of course, the valve base control device may also include other parts, which are not limited in the embodiment of the present application.

[0073] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A power supply, characterized in that: It includes a first power board, a second power board, a back board and a function board; Wherein, the backplane includes a first connector and a second connector; the first power board and the function board are respectively connected to the first connector, and the second power board and the function board are respectively connected to the second connector; The first power board is used to: supply power to the functional board through the first connecting member; The second power board is used to supply power to the functional board through the second connecting member.

2. The power supply according to claim 1, characterized in that: The first power board includes a first conversion circuit; The first conversion circuit is used to: convert the level of the first power supply voltage to obtain a third power supply voltage and provide it to the functional board; The level of the first supply voltage is greater than the level of the third supply voltage.

3. The power supply according to claim 2, characterized in that: The first supply voltage is an AC voltage and the third supply voltage is a DC voltage; or, the first supply voltage and the third supply voltage are both DC voltages.

4. The power supply according to claim 2, characterized in that: The first power board also includes a first protection circuit; The first protection circuit is used to protect the first conversion circuit from overvoltage, undervoltage or overcurrent, and is also used to transmit the fault state of the first power board to the functional board through the first conversion circuit and the first connector.

5. The power supply according to claim 2, characterized in that: The second power board includes a second conversion circuit; The second conversion circuit is used to: convert the level of the second power supply voltage to obtain a fourth power supply voltage and provide it to the functional board; The level of the second supply voltage is greater than the level of the fourth supply voltage.

6. The power supply according to claim 5, characterized in that: The second supply voltage is an AC voltage and the fourth supply voltage is a DC voltage; or, the second supply voltage and the fourth supply voltage are both DC voltages.

7. The power supply according to claim 5, characterized in that: The second power board also includes a second protection circuit; The second protection circuit is used to protect the second conversion circuit from overvoltage, undervoltage or overcurrent, and is also used to transmit the fault state of the second power board to the functional board through the second conversion circuit and the second connector.

8. The power supply according to claim 5, characterized in that: The functional board includes a first hot-swap protection circuit, a second hot-swap protection circuit, a combining circuit and a main control circuit; The input end of the first hot-swap protection circuit is connected to the first connection piece, the input end of the second hot-swap protection circuit is connected to the second connection piece, the output ends of the first hot-swap protection circuit and the second hot-swap protection circuit are respectively connected to the input end of the combining circuit, and the output end of the combining circuit is connected to the main control circuit; The first hot-swap protection circuit is used to: perform overvoltage, undervoltage or overcurrent protection on the combining circuit, and is also used to provide the third power supply voltage to the combining circuit; The second hot-swap protection circuit is used to: perform overvoltage, undervoltage or overcurrent protection on the combining circuit, and is also used to provide the fourth power supply voltage to the combining circuit; The combining circuit is used to adjust the third power supply voltage and the fourth power supply voltage to the working voltage required by the main control circuit and provide them to the main control circuit.

9. The power supply according to claim 1, characterized in that: The first connecting member and the second connecting member are both made of metal material.

10. A valve base control device, characterized in that: The method comprises a power supply as claimed in any one of claims 1 to 9.

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