UPS (Uninterrupted Power Supply) system power supply device and electronic equipment

Abstract

The utility model provides a UPS (Uninterrupted Power Supply) system power supply device and electronic equipment. According to the UPS system power supply device, the first DCS inlet wire or the second DCS inlet wire is conducted through the two power supply conversion modules according to the voltage of the first UPS feeder line and the voltage of the third UPS feeder line, the third DCS inlet wire or the fourth DCS inlet wire is conducted according to the voltage of the second UPS feeder line and the voltage of the fourth UPS feeder line, switching of power-on lines during redundant power supply is achieved, and the reliability of power supply is improved. Therefore, the problem that all loads or half loads of a DCS (Distributed Control System) are de-energized after one set of UPS (Uninterrupted Power Supply) system, namely two UPS power supplies, is de-energized at the same time or fails no matter whether a power supply mode in the existing scheme adopts a redundancy mode for power supply is solved.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and more specifically, to a UPS system power supply device and electronic equipment. Background Technology

[0002] UPS power supplies, or uninterruptible power supplies, are devices containing energy storage that primarily use inverters to provide constant voltage and frequency power to critical loads. They are particularly useful in petrochemical plants, where UPS power supplies mainly power DCS systems. Currently, there are three power supply methods for DCS systems:

[0003] 1. Single-unit non-redundant mode: There is only one UPS power supply in a power distribution room. Once the UPS power supply fails, the DCS system loses power.

[0004] 2. Single-unit dual redundancy mode: Two UPS power supplies are configured in one power distribution room. If one UPS power supply fails, the other UPS power supply will provide power. If both UPS power supplies fail at the same time, the DCS system will lose power.

[0005] 3. Dual-machine dual-redundancy mode: Two UPS systems are configured in one power distribution room. Each UPS system is equipped with two UPS power supplies. One UPS system provides power to half of the load of the DCS system in this unit area. Once one UPS power supply fails, half of the load of the DCS system will lose power.

[0006] The existing UPS system power supply method has the following problems:

[0007] The power supply adopts a non-redundant method. When the only UPS power supply fails, it causes the DCS system to lose power and the device to stop.

[0008] The power supply adopts a redundant power supply method. Whether it is a single-machine dual-redundant method or a dual-machine dual-redundant method, as long as one UPS system, i.e., two UPS power supplies, lose power or fail at the same time, it will cause the entire load or half of the load of the DCS system to lose power, resulting in the complete shutdown of the equipment or half of the equipment. Utility Model Content

[0009] The main objective of this application is to provide a UPS system power supply device and electronic equipment to at least solve the problem that when the power supply method of the existing solution adopts a redundant power supply method, whether it is a single-machine dual-redundant method or a dual-machine dual-redundant method, if one UPS system, i.e., two UPS power supplies, lose power or fail at the same time, it will cause the entire load or half of the load of the DCS system to lose power.

[0010] To achieve the above objectives, according to one aspect of this application, a UPS system power supply device is provided, comprising:

[0011] The four UPS feeders are the first UPS feeder, the second UPS feeder, the third UPS feeder, and the fourth UPS feeder.

[0012] The four DCS incoming lines are the first DCS incoming line, the second DCS incoming line, the third DCS incoming line, and the fourth DCS incoming line.

[0013] Two power conversion modules, namely a first power conversion module and a second power conversion module, are provided. The first UPS feeder and the third UPS feeder are electrically connected to the first DCS input line and the second DCS input line through the first power conversion module. The second UPS feeder and the fourth UPS feeder are electrically connected to the third DCS input line and the fourth DCS input line through the second power conversion module. The first power conversion module is used to turn on the first DCS input line or the second DCS input line according to the voltage of the first UPS feeder and the voltage of the third UPS feeder. The second power conversion module is used to turn on the third DCS input line or the fourth DCS input line according to the voltage of the second UPS feeder and the voltage of the fourth UPS feeder.

[0014] Optionally, the first power conversion module and the second power conversion module have the same structure, and the first power conversion module includes:

[0015] The first thyristor has its input terminal electrically connected to the first UPS feeder and its output terminal electrically connected to the first DCS input line.

[0016] The second thyristor has its input terminal electrically connected to the third UPS feeder and its output terminal electrically connected to the second DCS input line.

[0017] The logic circuit is electrically connected to the control terminals of the first thyristor and the second thyristor, respectively. The logic circuit is used to control whether the first thyristor is turned on according to the voltage of the first UPS feeder and the magnitude of the preset voltage, and to control whether the second thyristor is turned on according to the voltage of the third UPS feeder and the magnitude of the preset voltage.

[0018] Optionally, the logic circuit includes:

[0019] A first voltage comparator, the input terminal of the first voltage comparator is used to input the voltage of the first UPS feeder, and the output terminal of the first voltage comparator is electrically connected to the control terminal of the first thyristor.

[0020] The second voltage comparator is used to input the voltage of the second UPS feeder.

[0021] The logic sub-circuit has a first input terminal electrically connected to the output terminal of the first voltage comparator, a second output terminal electrically connected to the output terminal of the second voltage comparator, and an output terminal electrically connected to the control terminal of the second thyristor. The logic sub-circuit is used to turn on or off the second DCS input line according to the output level of the first voltage comparator and the output level of the second voltage comparator.

[0022] Optionally, the logic sub-circuit includes:

[0023] An inverter, the input terminal of which is electrically connected to the output terminal of the first voltage comparator;

[0024] The AND gate has its first input terminal electrically connected to the output terminal of the second voltage comparator, its second input terminal electrically connected to the output terminal of the inverter, and its output terminal electrically connected to the control terminal of the second thyristor.

[0025] Optionally, the logic circuit further includes: a first pull-up resistor module, which is electrically connected between the power supply terminal of the first voltage comparator and the output terminal of the first voltage comparator.

[0026] Optionally, the logic circuit further includes a second pull-up resistor module, which is electrically connected between the power supply terminal of the second voltage comparator and the output terminal of the second voltage comparator.

[0027] Optionally, the second pull-up resistor module includes multiple pull-up resistors connected in series or in parallel.

[0028] Optionally, the resistance value of the second pull-up resistor module is between 1kΩ and 10kΩ.

[0029] Optionally, the preset voltage is 220V.

[0030] According to another aspect of this application, an electronic device is provided, comprising: any of the UPS system power supply devices described above.

[0031] By applying the technical solution of this application, two power conversion modules connect either the first or second DCS input line based on the voltage of the first UPS feeder and the voltage of the third UPS feeder, and connect either the third or fourth DCS input line based on the voltage of the second UPS feeder and the voltage of the fourth UPS feeder. This achieves the switching of power lines in redundant power supply mode, thereby solving the problem that in existing solutions using redundant power supply mode, whether in single-machine dual-redundancy mode or dual-machine dual-redundancy mode, if one UPS system (i.e., two UPS power supplies) fails or malfunctions simultaneously, it will cause the entire load or half of the load of the DCS system to lose power. Attached Figure Description

[0032] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0033] Figure 1 A schematic diagram of a UPS system power supply device provided in an embodiment of this application is shown;

[0034] Figure 2 A schematic diagram of a first power conversion module provided according to an embodiment of this application is shown;

[0035] Figure 3 A schematic diagram of the control logic regarding the control terminal of the first thyristor in a logic circuit provided according to an embodiment of this application is shown;

[0036] Figure 4 A schematic diagram of a portion of the control logic relating to the control terminal of the second thyristor in a logic circuit provided according to an embodiment of this application is shown;

[0037] Figure 5 A schematic diagram of another part of the control logic regarding the control terminal of the second thyristor in a logic circuit provided according to an embodiment of this application is shown.

[0038] The above figures include the following reference numerals:

[0039] 100. First power conversion module; 110. Logic circuit; 200. Second power conversion module. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0042] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units 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.

[0043] As described in the background section, existing UPS systems have the following problems: When the power supply is non-redundant, a failure in the single UPS power supply causes a power outage in the DCS system, resulting in device shutdown. Conversely, when the power supply is redundant, whether in a single-machine dual-redundant or dual-machine dual-redundant configuration, a simultaneous power outage or failure of either of the two UPS power supplies in one UPS system will cause a complete or partial power outage in the DCS system, resulting in a complete or partial device shutdown. To address this issue, which arises when existing redundant power supply systems, whether in a single-machine dual-redundant or dual-machine dual-redundant configuration, experience a complete or partial power outage in the DCS system upon simultaneous power failure or failure of either of the two UPS power supplies, embodiments of this application provide a UPS system power supply device and electronic equipment.

[0044] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0045] This application provides a UPS system power supply device, such as... Figure 1 As shown, the UPS system power supply device includes:

[0046] The four UPS feeders are the first UPS feeder K1, the second UPS feeder K2, the third UPS feeder K3, and the fourth UPS feeder K4.

[0047] The four DCS incoming lines are J1 (first DCS incoming line), J2 (second DCS incoming line), J3 (third DCS incoming line), and J4 (fourth DCS incoming line).

[0048] Two power conversion modules, namely a first power conversion module 100 and a second power conversion module 200, are provided. The first UPS feeder and the third UPS feeder are electrically connected to the first DCS input line and the second DCS input line through the first power conversion module. The second UPS feeder and the fourth UPS feeder are electrically connected to the third DCS input line and the fourth DCS input line through the second power conversion module. The first power conversion module is used to turn on the first DCS input line or the second DCS input line according to the voltage of the first UPS feeder and the voltage of the third UPS feeder. The second power conversion module is used to turn on the third DCS input line or the fourth DCS input line according to the voltage of the second UPS feeder and the voltage of the fourth UPS feeder.

[0049] The first UPS feeder K1 and the second UPS feeder K2 are powered by one UPS, while the third UPS feeder K3 and the fourth UPS feeder K4 are powered by another UPS, forming a redundant structure.

[0050] In the aforementioned UPS system power supply device, two power conversion modules connect either the first or second DCS input line based on the voltage of the first UPS feeder and the voltage of the third UPS feeder, and connect either the third or fourth DCS input line based on the voltage of the second UPS feeder and the voltage of the fourth UPS feeder. This achieves the switching of power lines during redundant power supply, thereby solving the problem that in existing solutions using redundant power supply, whether in a single-machine dual-redundant mode or a dual-machine dual-redundant mode, the simultaneous loss or failure of one UPS system (i.e., two UPS power supplies) will cause the entire load or half of the load of the DCS system to lose power.

[0051] In one embodiment of this application, the first power conversion module and the second power conversion module have the same structure, such as... Figure 2 As shown, the first power conversion module includes:

[0052] The first thyristor VT1 has its input terminal electrically connected to the first UPS feeder and its output terminal electrically connected to the first DCS input line.

[0053] The second thyristor VT2, the input terminal of the second thyristor is electrically connected to the third UPS feeder, and the output terminal of the second thyristor is electrically connected to the second DCS input line;

[0054] The logic circuit 110 is electrically connected to the control terminals of the first thyristor and the second thyristor, respectively. The logic circuit is used to control whether the first thyristor is turned on according to the voltage of the first UPS feeder and the magnitude of the preset voltage, and to control whether the second thyristor is turned on according to the voltage of the third UPS feeder and the magnitude of the preset voltage.

[0055] Specifically, by adopting the priority power input 1 (i.e., the first UPS feeder K1) power supply mode, the power supply can only be switched to power input 2 (i.e., the third UPS feeder K3) when power input 1 loses power, and it will also switch to power input 1 power supply after power input 1 is restored.

[0056] In one embodiment of this application, Figure 2 , Figure 3 and Figure 4 As shown ( Figure 4 The inverter Q3 and AND gate Q4 form a logic sub-circuit, which includes:

[0057] The first voltage comparator Q1 has an input terminal used to input the voltage of the first UPS feeder, and its output terminal is electrically connected to the control terminal of the first thyristor.

[0058] The second voltage comparator Q2 is used to input the voltage of the second UPS feeder.

[0059] The logic sub-circuit has a first input terminal electrically connected to the output terminal of the first voltage comparator, a second output terminal electrically connected to the output terminal of the second voltage comparator, and an output terminal electrically connected to the control terminal of the second thyristor. The logic sub-circuit is used to turn on or off the second DCS input line according to the output levels of the first and second voltage comparators.

[0060] Specifically, Figure 3 OU1 is used for electrical connection to the control terminal of the first thyristor. Figure 5 OU3 is used for electrical connection to the control terminal of the second thyristor. The power conversion module uses two input AC220V power supplies and is configured with at least two AC220V outputs. The preset voltage is 220V. Both voltage comparators can be LM339 models.

[0061] When the input voltage Ui1 is greater than or equal to 220V, the output of UO1 is high level UOH, otherwise the output is low level U0L. The output UO1 can be directly connected to the VT1 thyristor control stage G1.

[0062] Figure 3 VCC provides the operating voltage for the voltage comparator LM339, typically 12V. The primary function of the first pull-up resistor module R1 is to provide a defined input signal level, ensuring circuit stability.

[0063] In one embodiment of this application, the above-mentioned logic sub-circuit includes:

[0064] Inverter Q3, the input terminal of the inverter is electrically connected to the output terminal of the first voltage comparator;

[0065] AND gate Q4, the first input terminal of the AND gate is electrically connected to the output terminal of the second voltage comparator, the second input terminal of the AND gate is electrically connected to the output terminal of the inverter, and the output terminal of the AND gate is electrically connected to the control terminal of the second thyristor.

[0066] In one embodiment of this application, the logic circuit further includes a first pull-up resistor module R1, which is electrically connected between the power supply terminal of the first voltage comparator and the output terminal of the first voltage comparator.

[0067] The overall switching logic is explained as follows:

[0068] When the input power supply 1 is a normal AC 220V voltage, according to the digital logic operation, UO1 outputs a high level. Figure 5 Regardless of whether UO2 outputs a high level or a low level, UO3 always outputs a low level. Therefore, the control terminal of VT1 is turned on when the level is high and the control terminal of VT2 is turned off when the level is low. That is, the input power supply 1 provides AC 220V power to the load through the thyristor VT1.

[0069] When input power supply 1 fails to meet the normal AC 220V voltage, i.e., when power is lost, according to the digital logic operation, the output of UO1 is low, and the control terminal of the VT1 thyristor is cut off at a low level. If input power supply 2 is at the normal AC 220V voltage at this time, according to... Figure 4 The digital logic operation UO2 outputs a high level, and then based on... Figure 5 In digital logic operation, when UO1 is low and UO2 is high, the output of UO3 is high. At this time, the control terminal of the thyristor VT2 is high and turned on, that is, the input power supply 2 provides AC 220V power to the load through the thyristor VT2.

[0070] If Ui1 returns to 220V power at this time, according to Figure 3 The digital logic operation UO1 outputs a high level, according to... Figure 5Regardless of whether UO2 outputs a high or low level, UO3 always outputs a low level. Therefore, the control terminal of VT1 is turned on when the level is high, and the control terminal of VT2 is turned off when the level is low. That is, input power supply 1 provides AC 220V power to the load through thyristor VT1. This restores the system to power supply 1.

[0071] If the input power supply 2 does not meet the normal AC 220V voltage at this time, and there is a power failure, then follow the instructions. Figure 4 The digital logic operation UO2 outputs a low level, and then based on... Figure 5 During digital logic operation, the output of UO3 is low. At this time, the control terminals of VT1 and VT2 are cut off at low level, and the load loses power.

[0072] In one embodiment of this application, such as Figure 4 As shown, the logic circuit further includes a second pull-up resistor module R2, which is electrically connected between the power supply terminal of the second voltage comparator and the output terminal of the second voltage comparator.

[0073] In one embodiment of this application, the second pull-up resistor module includes a plurality of pull-up resistors connected in series or in parallel.

[0074] In one embodiment of this application, the resistance value of the second pull-up resistor module is between 1kΩ and 10kΩ.

[0075] In one embodiment of this application, the preset voltage is 220V.

[0076] The specific principle is as follows:

[0077] UO3 = UO2 × the inverted UO1. This digital circuit logic means that UO3 can only output a high level when UO2 outputs a high level and UO1 outputs a low level. In other cases, UO3 outputs a low level. UO3 can be directly connected to the control terminal of VT1 thyristor.

[0078] This application also provides an electronic device, including any of the aforementioned UPS system power supply devices. By using two power conversion modules to switch on either the first or second DCS input line based on the voltage of the first UPS feeder and the voltage of the third UPS feeder, and to switch on either the third or fourth DCS input line based on the voltage of the second UPS feeder and the voltage of the fourth UPS feeder, the switching of power lines in redundant power supply mode is achieved. This solves the problem in existing solutions where, in redundant power supply mode, whether in a single-machine dual-redundancy mode or a dual-machine dual-redundancy mode, the simultaneous loss or failure of one UPS system (i.e., two UPS power supplies) will cause a complete or partial power loss of the DCS system load.

[0079] It should be noted that the above electrical connection can be a direct electrical connection or an indirect electrical connection. A direct electrical connection means that two devices are directly connected, while an indirect electrical connection means that there are other devices such as capacitors and resistors connected between the connected A and B.

[0080] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0081] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0082] 1) The UPS system power supply device of this application, through two power conversion modules, conducts the first DCS input line or the second DCS input line according to the voltage of the first UPS feeder and the voltage of the third UPS feeder, and conducts the third DCS input line or the fourth DCS input line according to the voltage of the second UPS feeder and the voltage of the fourth UPS feeder, thereby realizing the switching of the power supply line in the redundant power supply mode. This solves the problem that when the power supply mode of the existing solution adopts the redundant power supply mode, whether it is a single-machine dual-redundant mode or a dual-machine dual-redundant mode, as long as one UPS system, i.e., two UPS power supplies, lose power or fail at the same time, it will cause the entire load or half of the load of the DCS system to lose power.

[0083] 2) The electronic equipment of this application, through two power conversion modules, conducts the first DCS input line or the second DCS input line according to the voltage of the first UPS feeder and the voltage of the third UPS feeder, and conducts the third DCS input line or the fourth DCS input line according to the voltage of the second UPS feeder and the voltage of the fourth UPS feeder, thereby realizing the switching of the power supply line in the redundant power supply mode. This solves the problem that when the power supply mode of the existing solution adopts the redundant power supply mode, whether it is a single-machine dual-redundant mode or a dual-machine dual-redundant mode, as long as one UPS system, i.e., two UPS power supplies, lose power or fail at the same time, it will cause the entire load or half of the load of the DCS system to lose power.

[0084] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A UPS system power supply device, characterized in that, include: The four UPS feeders are the first UPS feeder, the second UPS feeder, the third UPS feeder, and the fourth UPS feeder. The four DCS incoming lines are the first DCS incoming line, the second DCS incoming line, the third DCS incoming line, and the fourth DCS incoming line. Two power conversion modules, namely a first power conversion module and a second power conversion module, are provided. The first UPS feeder and the third UPS feeder are electrically connected to the first DCS input line and the second DCS input line through the first power conversion module. The second UPS feeder and the fourth UPS feeder are electrically connected to the third DCS input line and the fourth DCS input line through the second power conversion module. The first power conversion module is used to turn on the first DCS input line or the second DCS input line according to the voltage of the first UPS feeder and the voltage of the third UPS feeder. The second power conversion module is used to turn on the third DCS input line or the fourth DCS input line according to the voltage of the second UPS feeder and the voltage of the fourth UPS feeder.

2. The UPS system power supply device according to claim 1, characterized in that, The first power conversion module and the second power conversion module have the same structure. The first power conversion module includes: The first thyristor has its input terminal electrically connected to the first UPS feeder and its output terminal electrically connected to the first DCS input line. The second thyristor has its input terminal electrically connected to the third UPS feeder and its output terminal electrically connected to the second DCS input line. The logic circuit is electrically connected to the control terminals of the first thyristor and the second thyristor, respectively. The logic circuit is used to control whether the first thyristor is turned on according to the voltage of the first UPS feeder and the magnitude of the preset voltage, and to control whether the second thyristor is turned on according to the voltage of the third UPS feeder and the magnitude of the preset voltage.

3. The UPS system power supply device according to claim 2, characterized in that, The logic circuit includes: A first voltage comparator, the input terminal of the first voltage comparator is used to input the voltage of the first UPS feeder, and the output terminal of the first voltage comparator is electrically connected to the control terminal of the first thyristor. The second voltage comparator is used to input the voltage of the second UPS feeder. The logic sub-circuit has a first input terminal electrically connected to the output terminal of the first voltage comparator, a second output terminal electrically connected to the output terminal of the second voltage comparator, and an output terminal electrically connected to the control terminal of the second thyristor. The logic sub-circuit is used to turn on or off the second DCS input line according to the output level of the first voltage comparator and the output level of the second voltage comparator.

4. The UPS system power supply device according to claim 3, characterized in that, The logic sub-circuit includes: An inverter, the input terminal of which is electrically connected to the output terminal of the first voltage comparator; The AND gate has its first input terminal electrically connected to the output terminal of the second voltage comparator, its second input terminal electrically connected to the output terminal of the inverter, and its output terminal electrically connected to the control terminal of the second thyristor.

5. The UPS system power supply device according to claim 3, characterized in that, The logic circuit further includes a first pull-up resistor module, which is electrically connected between the power supply terminal of the first voltage comparator and the output terminal of the first voltage comparator.

6. The UPS system power supply device according to claim 3, characterized in that, The logic circuit further includes a second pull-up resistor module, which is electrically connected between the power supply terminal of the second voltage comparator and the output terminal of the second voltage comparator.

7. The UPS system power supply device according to claim 6, characterized in that, The second pull-up resistor module includes multiple pull-up resistors connected in series or in parallel.

8. The UPS system power supply device according to claim 7, characterized in that, The resistance value of the second pull-up resistor module is between 1kΩ and 10kΩ.

9. The UPS system power supply device according to any one of claims 2 to 7, characterized in that, The preset voltage is 220V.

10. An electronic device, characterized in that, include: The UPS system power supply device according to any one of claims 1 to 9.

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