Power supply mode switching method, system, controller and storage medium

Abstract

The present application relates to a method, system, controller and storage medium for switching power supply modes. The method comprises: receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; determining the operating state of a bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction; when the bidirectional thyristor static switch of the UPS system is in a disconnected state and the power supply state of the UPS system is in a normal state, controlling the bidirectional thyristor static switch to be turned on so that the power supply mode of the UPS power supply system is switched from an inverter power supply mode to a bypass power supply mode; when it is determined that the power supply mode of the UPS power supply system is switched to a bypass power supply mode, controlling the relay to be turned on and controlling the bidirectional thyristor static switch to be turned off so that power is supplied to the load equipment of the UPS system through the relay. The use of this method can improve the reliability of bypass power supply of an uninterruptible power supply UPS system.

Description

Technical Field

[0001] The present application relates to the technical field of uninterruptible power supply (UPS), and in particular to a power supply mode switching method, system, controller and storage medium. Background Art

[0002] As computers and other high-precision equipment have higher and higher requirements for the reliability and quality of power supply systems, uninterruptible power supply (UPS) power supply technology has emerged. UPS power supply technology can provide computers and other high-precision equipment with voltage signals without clutter interference. In addition, UPS power supply technology can switch to the bypass power supply of the UPS system when the inverter output end suddenly loses power, ensuring uninterrupted power supply of the UPS system.

[0003] However, after the UPS system switches to bypass power supply through the bidirectional thyristor static switch, the bidirectional thyristor static switch will overheat due to being in load mode for a long time. The overheating of the bidirectional thyristor static switch will cause damage to the bidirectional thyristor static switch, thereby causing the UPS system to be unable to provide uninterrupted power supply, resulting in low reliability of the UPS system when switching to bypass power supply. Summary of the invention

[0004] Based on this, it is necessary to provide a power supply mode switching method, system, controller and computer-readable storage medium that can improve the bypass power supply reliability of a UPS system in response to the above technical problems.

[0005] In a first aspect, the present application provides a method for switching a power supply mode. The method comprises:

[0006] Receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when an inverter power supply mode of the UPS power supply system is abnormal;

[0007] Determine the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction;

[0008] When the bidirectional thyristor static switch of the UPS system is in an off state and the power supply state of the UPS system is in a normal state, the bidirectional thyristor static switch is controlled to be turned on so that the power supply mode of the UPS power supply system is switched from an inverter power supply mode to a bypass power supply mode;

[0009] When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the relay is controlled to be turned on and the bidirectional thyristor static switch is controlled to be turned off, so that power is supplied to the load equipment of the UPS system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

[0010] In one embodiment, when it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, controlling the relay to be turned on includes:

[0011] A control signal is sent to the relay, and the relay is controlled to be turned on by the control signal.

[0012] In one embodiment, when it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, controlling the bidirectional thyristor static switch to be disconnected includes:

[0013] A driving signal is sent to a bidirectional thyristor static switch driving module connected to the bidirectional thyristor static switch, and the bidirectional thyristor static switch is controlled to be disconnected by the driving signal.

[0014] In one embodiment, determining the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction includes:

[0015] Acquire bidirectional thyristor static switch state detection parameters and power supply voltage parameters of the UPS system according to the trigger instruction;

[0016] Determine the operating state of the bidirectional thyristor static switch of the UPS system according to the bidirectional thyristor static switch state detection parameter;

[0017] The power supply status of the UPS system is determined according to the power supply voltage parameter of the UPS system.

[0018] In one embodiment, the step of determining the operating state of the bidirectional thyristor static switch of the UPS system according to the bidirectional thyristor static switch state detection parameter includes:

[0019] When the bidirectional thyristor static switch state detection parameter indicates that the bidirectional thyristor static switch is disconnected, it is determined that the bidirectional thyristor static switch is in the disconnected state.

[0020] In one embodiment, the power supply voltage parameter includes a mains input voltage parameter, an output voltage parameter of an inverter output terminal of the UPS system, and an output voltage parameter of the UPS system; and determining the power supply state of the UPS system according to the power supply voltage parameter of the UPS system includes:

[0021] When the mains input voltage parameter, the output voltage parameter of the inverter output terminal, and the output voltage parameter of the UPS system are all within a preset voltage range, it is determined that the power supply state of the UPS system is a normal state.

[0022] In a second aspect, the present application also provides a power supply mode switching system. The system includes an uninterruptible power supply UPS power supply system, a controller and a load device; the UPS power supply system is connected to the controller and the load device respectively; the UPS power supply system includes a bidirectional thyristor static switch, a relay and a bidirectional thyristor static switch driving module; the bidirectional thyristor static switch and the relay are connected in parallel; the bidirectional thyristor static switch and the bidirectional thyristor static switch driving module are connected;

[0023] The controller is used to execute the power supply mode switching method;

[0024] The UPS power supply system is used to supply power to the load equipment.

[0025] In a third aspect, the present application further provides a controller. The controller includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0026] Receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when an inverter power supply mode of the UPS power supply system is abnormal;

[0027] Determine the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction;

[0028] When the bidirectional thyristor static switch of the UPS system is in an off state and the power supply state of the UPS system is in a normal state, the bidirectional thyristor static switch is controlled to be turned on so that the power supply mode of the UPS power supply system is switched from an inverter power supply mode to a bypass power supply mode;

[0029] When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the relay is controlled to be turned on and the bidirectional thyristor static switch is controlled to be turned off, so that power is supplied to the load equipment of the UPS system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

[0030] In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0031] Receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when an inverter power supply mode of the UPS power supply system is abnormal;

[0032] Determine the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction;

[0033] When the bidirectional thyristor static switch of the UPS system is in an off state and the power supply state of the UPS system is in a normal state, the bidirectional thyristor static switch is controlled to be turned on so that the power supply mode of the UPS power supply system is switched from an inverter power supply mode to a bypass power supply mode;

[0034] When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the relay is controlled to be turned on and the bidirectional thyristor static switch is controlled to be turned off, so that power is supplied to the load equipment of the UPS system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

[0035] The power supply mode switching method, system, controller and computer-readable storage medium receive a trigger instruction sent by a UPS power supply system, and after determining that the operating state of the bidirectional thyristor static switch is the disconnected state and the power supply state of the UPS system is the normal state, control the bidirectional thyristor static switch to be turned on. Since the bidirectional thyristor static switch has the function of zero-time switching, when switching the power supply mode, the UPS system can be quickly switched from the inverter power supply mode to the bypass power supply mode. The switching process delay is very short, which can ensure the uninterrupted power supply of the UPS system. After the controller determines that the UPS system has successfully switched to the bypass power supply mode, the controller controls the relay to be turned on and controls the bidirectional thyristor static switch to be turned off, so that power is supplied to the load equipment of the UPS system through the relay, thereby avoiding the problem of overheating and damage of the bidirectional thyristor static switch due to long-term load, and improving the reliability of the bypass power supply of the UPS system. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is an application environment diagram of a method for switching a power supply mode in an embodiment;

[0037] Figure 2 is a schematic flow chart of a method for switching a power supply mode in an embodiment;

[0038] Figure 3 is a schematic flow chart of a method for switching a power supply mode in an embodiment;

[0039] Figure 4 is a structural schematic diagram of a power supply mode switching system in an embodiment;

[0040] Figure 5 A judgment logic flow chart of a method for switching a power supply mode in an embodiment;

[0041] Figure 6 is a structural schematic diagram of a power supply mode switching system in an embodiment;

[0042] Figure 7 is a structural block diagram of a switching device for a power supply mode in an embodiment;

[0043] Figure 8 FIG. 4 is a diagram showing the internal structure of a controller in one embodiment. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] The power supply mode switching method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. The controller 101 communicates with the uninterruptible power supply UPS system 102 through the network. The controller 101 can receive a trigger instruction of the uninterruptible power supply UPS system 102, and control the power supply mode of the uninterruptible power supply UPS system 102 to switch from the inverter power supply mode to the bypass power supply mode according to the trigger instruction. The controller 101 can be a controller of the uninterruptible power supply UPS system, or a controller of a single-chip microcomputer connected to the uninterruptible power supply UPS system. The uninterruptible power supply UPS system 102 can be a passive backup UPS power supply, an online interactive UPS power supply, or a double conversion UPS power supply.

[0046] In one embodiment, Figure 2 As shown, a method for switching a power supply mode is provided, and the method is applied to Figure 1 The controller in the example is used to illustrate the following steps:

[0047] Step 201, receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when the inverter power supply mode of the UPS power supply system is abnormal.

[0048] Among them, the uninterruptible power supply UPS power supply system may include multiple uninterruptible UPS power supply systems in parallel, and may also include a single uninterruptible UPS power supply system. Optionally, the uninterruptible UPS power supply system may include a management unit, and the management unit may determine whether the inverter power supply mode is abnormal according to various power supply parameters of the uninterruptible UPS power supply system. If the inverter power supply mode is abnormal, the uninterruptible power supply UPS power supply system may generate a trigger instruction to instruct the UPS power supply system to switch the power supply mode and send the trigger instruction to the controller. Optionally, the power supply mode of the UPS power supply system includes an inverter power supply mode and a bypass power supply mode. The inverter power supply mode refers to a mode in which the uninterruptible power supply UPS system supplies power through the voltage output by the inverter output terminal, wherein the voltage output by the inverter output terminal may be the voltage after the AC power is inverted, or may be the voltage after the battery of the uninterruptible power supply UPS system is inverted. The bypass power supply mode refers to a mode in which the uninterruptible power supply UPS system supplies power by bypassing the backup AC power supply. Furthermore, the management unit can also issue a reverse trigger instruction after determining that the inverter power supply mode has returned to normal, to command the controller to switch the power supply mode of the uninterruptible power supply UPS system from the bypass power supply mode to the inverter power supply mode. Alternatively, the management unit can also be artificially controlled to issue a trigger instruction to control the switching of the power supply mode of the uninterruptible UPS power supply. Optionally, the controller can include a detection port, a drive interface, a relay control port and a communication port. The controller obtains the parameters such as the size, frequency and state of the power supply input through the detection port through the logic control program implanted in the CPU unit, and then forms a control instruction according to these parameters. The drive interface is used to transmit the control instruction to the bidirectional thyristor static switch drive module. The relay control port is used to output the relay control command after switching to the bypass power supply mode in the parallel UPS inverter power supply. The communication port is used to communicate with an external host computer unit to transmit the detected power value and operating status data to realize the monitoring of the operating status of the UPS system.

[0049] Step 202, determining the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction.

[0050] Among them, the operating state of the bidirectional thyristor static switch includes the on state and the off state, and the power supply state of the UPS system includes the normal state and the abnormal state. The controller can be connected to an electric quantity detection unit, and the electric quantity detection unit can obtain the state detection parameters of the bidirectional thyristor static switch and the power supply voltage parameters of the UPS system, and send these parameter information to the controller. The controller can analyze the operating state of the bidirectional thyristor static switch and the power supply state of the UPS system through the obtained parameter information. Specifically, after receiving the trigger instruction, the controller can instruct the electric quantity detection unit to obtain the operating state detection parameters of the bidirectional thyristor static switch and the power supply state parameters of the UPS system. The electric quantity detection unit will then send the above parameter information to the controller, and the controller can analyze these parameter information to determine the operating state of the bidirectional thyristor static switch and the power supply state of the UPS system. Optionally, the electric quantity detection unit can also include an electric quantity isolation conversion unit and a filtering unit, and the electric quantity isolation conversion unit and the filtering unit are used to realize the isolation, conversion and filtering of the electric quantity on each side of the UPS power supply system.

[0051] Step 203, when the bidirectional thyristor static switch of the UPS system is in the disconnected state and the power supply state of the UPS system is in the normal state, the bidirectional thyristor static switch is controlled to be turned on so that the power supply mode of the UPS power supply system is switched from the inverter power supply mode to the bypass power supply mode.

[0052] The UPS system may include a drive unit. When the controller determines that the bidirectional thyristor static switch is in the disconnected state and the power supply state of the UPS system is in the normal state, the controller may issue a drive instruction to the drive unit, and the drive unit controls the conduction of the bidirectional thyristor static switch to switch the power supply mode of the UPS power supply system from the inverter power supply mode to the bypass power supply mode. It should be noted that the traditional UPS system power supply mode is switched from the inverter power supply mode to the bypass power supply mode by switching the state of the bidirectional thyristor static switch. When the bidirectional thyristor static switch is switched from disconnected to conducted, the power supply mode of the UPS system will be switched from the inverter power supply mode to the bypass power supply mode.

[0053] Step 204, when it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, control the relay to be turned on and control the bidirectional thyristor static switch to be turned off, so that power is supplied to the load equipment of the UPS system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

[0054] Among them, the bidirectional thyristor static switch has the function of zero-time switching, which can ensure the uninterrupted power supply of the UPS system when switching the power supply mode, while the relay will have a delay when switching the power supply mode, does not have the function of zero-time switching, and there will be a current surge phenomenon when the relay is turned on, and the power supply quality cannot be guaranteed. However, the bidirectional thyristor static switch will be in a loaded state for a long time in the bypass power supply mode and overheat and damage, so it is necessary to connect the bidirectional thyristor static switch in parallel with the relay, and control the bidirectional thyristor static switch to be turned on when the UPS power supply system switches the bypass power supply mode, so as to achieve zero-time switching of the UPS system. After the controller determines that the power supply mode of the UPS power supply system is successfully switched to the bypass power supply mode, the relay is controlled to be turned on and the bidirectional thyristor static switch is controlled to be turned off, so that the load equipment of the UPS system is powered by the relay, avoiding the long-term loading of the bidirectional thyristor static switch. Optionally, the relay can be a newly added relay in the traditional uninterruptible power supply UPS system.

[0055] In the above power supply mode switching method, the controller receives a trigger instruction sent by the UPS power supply system, and after determining that the bidirectional thyristor static switch is in the disconnected state and the power supply state of the UPS system is in the normal state, controls the bidirectional thyristor static switch to be turned on. Since the bidirectional thyristor static switch has the function of zero-time switching, when switching the power supply mode, the UPS system can be quickly switched from the inverter state mode to the bypass power supply mode. The switching process delay is very short, which can ensure the uninterrupted power supply of the UPS system. After the controller determines that the UPS system has successfully switched to the bypass power supply mode, the controller controls the relay to be turned on and controls the bidirectional thyristor static switch to be turned off, so that power is supplied to the load equipment of the UPS system through the relay, thereby avoiding the problem of overheating and damage of the bidirectional thyristor static switch due to long-term load, and improving the reliability of the bypass power supply of the UPS system.

[0056] Based on the above embodiment, in one embodiment, the controller may send a control signal to the relay, and control the relay to be turned on through the control signal.

[0057] Specifically, the controller can detect the state of the bidirectional thyristor static switch through the above-mentioned power detection unit. When the power detection unit determines that the bidirectional thyristor static switch is in the on state, it determines that the power supply mode of the UPS system is successfully switched to the bypass power supply mode. When the controller determines that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, a control signal is sent to the relay to control the relay to turn on. Optionally, the relay may include a thermal relay, an electromagnetic relay, a time relay, a temperature relay, a speed relay, etc. Generally, the relay has a relatively high reliability when it is loaded for a long time, and is not prone to overheating and damage due to long-term loading. It can play the role of automatic adjustment, safety protection, and circuit conversion in the circuit, and has a high safety of use.

[0058] In this embodiment, the controller can quickly determine that the UPS power supply system has switched to the bypass power supply mode through the power detection unit, and send a control signal to the relay to control the relay to turn on. By first turning on the bidirectional thyristor static switch and then turning on the relay, the UPS system can successfully achieve uninterrupted power supply when switching the power supply mode. At the same time, it can avoid current surges when the relay is turned on, thereby ensuring the power supply quality of the uninterruptible power supply UPS system.

[0059] Based on the above embodiments, in one embodiment, the controller may send a driving signal to a bidirectional thyristor static switch driving module connected to the bidirectional thyristor static switch, and control the bidirectional thyristor static switch to be disconnected through the driving signal.

[0060] Specifically, in an embodiment of the present application, a bidirectional thyristor static switch is connected to a driving module, and the working state of the bidirectional thyristor static switch can be controlled by the driving module. For example, the bidirectional thyristor static switch can be controlled to be turned on by the driving module, and the bidirectional thyristor static switch can also be controlled to be turned off by the driving module. In this embodiment, when the above-mentioned relay is turned on, the controller can send a driving signal to the driving module to the bidirectional thyristor static switch. After receiving the driving signal, the driving module can convert the driving signal into a pulse signal and send it to the bidirectional thyristor static switch. The pulse signal is used to control the bidirectional thyristor static switch from the on state to the off state. It should be noted that in order to ensure the uninterrupted power supply of the UPS system, the bidirectional thyristor static switch can be controlled to be turned off at the moment the relay is turned on, and the two actions are completed at the same time.

[0061] In this embodiment, after the relay is turned on, the controller can send a driving signal through the driving unit to control the bidirectional thyristor static switch to switch from the on state to the off state, and the relay continues to supply power to the load equipment of the UPS system, which can avoid the bidirectional thyristor static switch being in a long-term loaded state, thereby improving the reliability of the bypass power supply of the UPS system.

[0062] Further, in one embodiment, if Figure 3 As shown, in the scenario of determining the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction, the above S202 includes:

[0063] S301, acquiring bidirectional thyristor static switch state detection parameters and power supply voltage parameters of the UPS system according to a trigger instruction.

[0064] Among them, the bidirectional thyristor static switch state detection parameters may include current signals at the input and output ends of the bidirectional thyristor static switch. Further, the bidirectional thyristor static switch state detection parameters may also include other electrical parameters that can characterize the on-off state of the bidirectional thyristor static switch, and this embodiment is not limited here. The power supply voltage parameters of the UPS system include the AC input voltage parameters, the output voltage parameters of the inverter output end of the UPS system, and the output voltage parameters of the UPS system. Specifically, after the controller receives the trigger instruction, the controller will instruct the power detection unit to obtain the detection parameters of the bidirectional thyristor static switch state and the power supply voltage parameters of the UPS system, and send the parameter information to the controller. Optionally, the controller may include a detection port, which is used to receive the parameter information sent by the power detection unit, and analyze the parameter information to determine the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system.

[0065] S302, determining the operating state of the bidirectional thyristor static switch of the UPS system according to the bidirectional thyristor static switch state detection parameter.

[0066] Optionally, the controller may determine that the bidirectional thyristor static switch is in the disconnected state when the bidirectional thyristor static switch state detection parameter indicates that the bidirectional thyristor static switch is disconnected. For example, the bidirectional thyristor static switch state detection parameter may be 0 or 1. When the bidirectional thyristor static switch state detection parameter is 1, the bidirectional thyristor static switch is determined to be in the disconnected state. When the bidirectional thyristor static switch state detection parameter is 0, the bidirectional thyristor static switch is determined to be in the on state.

[0067] Optionally, the power detection unit can be used to detect whether there is a current signal at the input and output ends of the bidirectional thyristor static switch, and send the detection result of whether there is a current signal at the input and output ends of the bidirectional thyristor static switch to the detection port of the controller, so that the controller determines the operating state of the bidirectional thyristor static switch according to the detection result of whether there is a current signal at the input and output ends of the bidirectional thyristor static switch. For example, when the power detection unit detects that there is no current signal at both the input and output ends of the bidirectional thyristor static switch, the power detection unit can send the detection result to the detection port of the controller, and then the controller can determine that the operating state of the bidirectional thyristor static switch is the disconnected state. When the power detection unit detects that there is a current signal at both the input and output ends of the bidirectional thyristor static switch, the power detection unit can send the detection result to the detection port of the controller, and the detection port can determine that the bidirectional thyristor static switch is turned on, and then the controller can determine that the operating state of the bidirectional thyristor static switch is the turned-on state. Optionally, when the controller receives a trigger instruction to switch to bypass power supply, if the controller detects that the bidirectional thyristor static switch is in the on state, the controller needs to control the bidirectional thyristor static switch to disconnect and detect the power supply status of the UPS system. If the power supply status is normal, the controller controls the bidirectional thyristor static switch to turn on and switches the UPS system to bypass power supply mode.

[0068] S303: Determine the power supply status of the UPS system according to the power supply voltage parameters of the UPS system.

[0069] Optionally, the controller can preset a voltage range, and the power detection unit can be used to detect the AC input voltage parameters, the output voltage parameters of the inverter output end of the UPS system, and the output voltage parameters of the UPS system, and send the power supply voltage parameters of the UPS system to the detection port of the controller. The controller can compare the received power supply voltage parameters of the UPS system with the preset voltage range to determine whether the power supply state of the UPS system is in a normal state or an abnormal state. For example, if the power supply voltage parameters of the UPS system are all within the preset voltage range, the controller determines that the power supply state of the UPS system is a normal state; if the power supply voltage parameters of the UPS system are outside the preset range, the controller determines that the power supply state of the UPS system is an abnormal state.

[0070] Further, in one embodiment, the power supply voltage parameters include the mains input voltage parameters, the output voltage parameters of the inverter output end of the UPS system, and the output voltage parameters of the UPS system, and the above S303 also includes: if the mains input voltage parameters, the output voltage parameters of the inverter output end, and the output voltage parameters of the UPS system are all within the preset voltage range, it is determined that the power supply state of the UPS system is normal. For example, the detection unit can preset the voltage range to 100-300V, the power detection unit detects that the mains input voltage is 250V, the output voltage of the inverter output end is 220V, and the output voltage of the system is 200V. The detection port compares the power supply voltage parameters of the UPS power supply system with the preset voltage range, and determines that the above power supply voltage parameters are within the preset voltage range, then it can be determined that the power supply state of the UPS system is normal. Optionally, the preset voltage range can be the same voltage range, or different voltage ranges can be set for different power supply voltage parameters. Optionally, the controller may also include a communication port for sending the power supply voltage parameter of the UPS system and the determined power supply status information of the UPS system to an external host computer unit. The maintenance personnel may confirm the power supply status of the UPS system through the power supply status information of the UPS system received by the external host computer unit, and confirm the specific abnormal module of the UPS system according to the power supply voltage parameter information of the UPS system, so as to facilitate the maintenance of the UPS system. Optionally, if any of the three power supply voltage parameters, namely, the mains input voltage parameter, the output voltage parameter of the inverter output end of the UPS system, and the output voltage parameter of the UPS system, is not within a preset voltage range, the controller may determine that the power supply status of the UPS system is an abnormal state. At this time, the controller may send the abnormal parameter information to the maintenance personnel through the communication port, and the maintenance personnel may perform maintenance inspection on the UPS system. Optionally, if only one of the three power supply voltage parameters, namely, the mains input voltage parameter, the output voltage parameter of the inverter output end of the UPS system, and the output voltage parameter of the UPS system, is within a preset voltage range, the controller confirms that the uninterruptible power supply UPS system cannot supply power to the load device and needs to be immediately maintained and inspected.Optionally, if the AC input voltage parameter and the output voltage parameter of the UPS system are within a preset voltage range, and the output voltage parameter of the inverter output end of the UPS system is outside the preset voltage range, the controller can still control the UPS system to switch to the bypass power supply mode after sending the abnormal parameter information; if the output voltage parameter of the inverter output end of the UPS system and the output voltage parameter of the UPS system are within the preset voltage range, and the AC input voltage parameter is outside the preset voltage range, the controller can still control the UPS system to switch to the inverter power supply mode after sending the abnormal parameter information; if the AC input voltage parameter and the output voltage parameter of the inverter output end of the UPS system are within the preset voltage range, and the output voltage parameter of the UPS system is outside the preset voltage range, the controller confirms that the uninterruptible power supply UPS system cannot supply power to the load equipment and needs to be repaired and inspected immediately.

[0071] In this embodiment, the controller can timely obtain the bidirectional thyristor static switch state detection parameters and the power supply voltage parameters of the UPS system in accordance with the received trigger instruction, thereby being able to quickly determine the operating state of the bidirectional thyristor static switch and the power supply state of the UPS system; in addition, the bidirectional thyristor static switch state detection parameters and the power supply voltage parameters of the UPS system can be accurately obtained from the UPS system, thereby being able to accurately determine the operating state of the bidirectional thyristor static switch according to the bidirectional thyristor static switch state detection parameters, and accurately determine the power supply state of the UPS system according to the power supply voltage parameters of the UPS system.

[0072] To facilitate understanding by those skilled in the art, the power supply mode switching method provided by the present application is described in detail below. Figure 4 and Figure 5 , the method may include:

[0073] S1, the controller 2 can receive a bypass request sent by an uninterruptible power supply UPS power supply system through the detection port 21; the trigger instruction is generated when the inverter power supply mode of the UPS power supply system is abnormal.

[0074] S2, the controller 2 obtains the bidirectional thyristor static switch state detection parameters detected by the power detection unit 1 through the above-mentioned detection port 21 according to the trigger instruction, and determines that the bidirectional thyristor static switch is in the disconnected state when the bidirectional thyristor static switch state detection parameters indicate that the bidirectional thyristor static switch is disconnected.

[0075] S3, the controller 2 obtains the output voltage parameters of the UPS system detected by the power detection unit 1 through the above-mentioned detection port 21 according to the trigger instruction, and when the AC input voltage parameters, the output voltage parameters of the inverter output end and the output voltage parameters of the UPS system are all within the preset voltage range, it is determined that the power supply status of the UPS system is normal.

[0076] S4, when the controller 2 determines that the bidirectional thyristor static switch of the UPS system is in the disconnected state and the power supply state of the UPS system is in the normal state, the controller 2 sends a driving signal to the bidirectional thyristor static switch driving unit 3 through the driving interface 22, and the bidirectional thyristor static switch driving unit 2 converts the driving signal into a pulse signal to control the bidirectional thyristor static switch 4 to be turned on, so that the power supply mode of the UPS power supply system is switched from the inverter power supply mode to the bypass power supply mode.

[0077] S5, when the controller 2 determines that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the controller 2 sends a control signal to the relay 5 through the relay control port 23, and controls the relay 5 to be turned on through the control signal.

[0078] S6, when the controller 2 determines that the relay 5 is turned on, the controller 2 sends a driving signal to the bidirectional thyristor static switch driving unit 2 connected to the bidirectional thyristor static switch 4, and controls the bidirectional thyristor static switch 4 to be turned off through the driving signal.

[0079] It should be noted that for the descriptions in the above S1-S6, reference may be made to the relevant descriptions in the above embodiments, and the effects are similar, which will not be repeated in this embodiment.

[0080] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0081] Based on the same inventive concept, the embodiment of the present application also provides a power supply mode switching system for implementing the power supply mode switching method involved above. The implementation scheme for solving the problem provided by the system is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of one or more power supply mode switching systems provided below can refer to the limitations of the power supply mode switching method above, and will not be repeated here.

[0082] In one embodiment, Figure 6 As shown, a power supply mode switching system is provided, including an uninterruptible power supply UPS power supply system 40, a controller 50 and a load device 60; the UPS power supply system 40 is connected to the controller 50 and the load device 60 respectively; the UPS power supply system 40 includes a bidirectional thyristor static switch 401, a relay 402 and a bidirectional thyristor static switch driving module 403; the bidirectional thyristor static switch 401 and the relay 402 are connected in parallel; the bidirectional thyristor static switch 401 and the bidirectional thyristor static switch driving module 402 are connected; the controller 50 is used to execute the above-mentioned power supply mode switching method; the UPS power supply system 40 is used to supply power to the load device 60.

[0083] Specifically, the controller 50 is used to receive a trigger instruction sent by the uninterruptible power supply UPS power supply system 40; the trigger instruction is generated when the inverter power supply mode of the UPS power supply system 40 is abnormal;

[0084] The controller 50 determines the operating status of the bidirectional thyristor static switch 401 of the UPS system 40 and the power supply status of the UPS system 40 according to the trigger instruction; optionally, the above-mentioned controller can be a controller of an uninterruptible power supply UPS system, or a controller of a single-chip microcomputer connected to the uninterruptible power supply UPS system.

[0085] When the bidirectional thyristor static switch 401 of the UPS system 40 is in the disconnected state and the power supply state of the UPS system 40 is in the normal state, the bidirectional thyristor static switch 401 is controlled to be turned on, so that the power supply mode of the UPS power supply system is switched from the inverter power supply mode to the bypass power supply mode;

[0086] When it is determined that the power supply mode of the UPS power supply system 40 is switched to the bypass power supply mode, the control relay 402 is turned on and the bidirectional thyristor static switch 401 is controlled to be turned off, so that power is supplied to the load device 60 of the UPS system 40 through the relay 402; wherein the relay 402 is connected in parallel with the bidirectional thyristor static switch 401.

[0087] The power supply mode switching system provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0088] Based on the same inventive concept, the embodiment of the present application also provides a power supply mode switching device for implementing the power supply mode switching method involved in the above, and its internal structure diagram is as follows: Figure 7 The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of one or more power supply mode switching devices provided below can refer to the limitations of the power supply mode switching method above, and will not be repeated here.

[0089] In one embodiment, Figure 7 As shown, a power supply mode switching device is provided, comprising: a receiving module, a determining module, a first control module and a second control module, wherein:

[0090] The receiving module is used to receive a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when the inverter power supply mode of the UPS power supply system is abnormal.

[0091] A determination module, used to determine the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction;

[0092] The first control module is used to control the bidirectional thyristor static switch to be turned on when the bidirectional thyristor static switch of the UPS system is in the disconnected state and the power supply state of the UPS system is in the normal state, so that the power supply mode of the UPS power supply system is switched from the inverter power supply mode to the bypass power supply mode;

[0093] The second control module is used to control the relay to turn on and the bidirectional thyristor static switch to turn off when it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, so that power is supplied to the load equipment of the UPS system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

[0094] The power supply mode switching device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0095] Based on the above embodiment, the above determination module includes: a first acquisition unit, a first determination unit; a second acquisition unit, a second determination unit, wherein:

[0096] The first acquisition unit is used to acquire the detection parameters of the static switch state of the bidirectional thyristor.

[0097] The first determining unit is used to determine the operating state of the bidirectional thyristor static switch of the UPS system according to the bidirectional thyristor static switch state detection parameter.

[0098] The second acquisition unit is used to acquire the power supply voltage parameter of the UPS system.

[0099] The second determining unit is used to determine the power supply status of the UPS system according to the power supply voltage parameter of the UPS system.

[0100] The power supply mode switching device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0101] On the basis of the above embodiment, optionally, the first determination unit determines that the bidirectional thyristor static switch is in the disconnected state when the bidirectional thyristor static switch state detection parameter indicates that the bidirectional thyristor static switch is disconnected; the second determination unit determines that the power supply state of the UPS system is normal when the AC input voltage parameter, the output voltage parameter of the inverter output end and the output voltage parameter of the UPS system are all within a preset voltage range.

[0102] The power supply mode switching device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0103] On the basis of the above embodiment, optionally, when it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the above-mentioned first control module can send a control signal to the relay, and control the relay to be turned on by the control signal; when it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the above-mentioned second control module can send a drive signal to the bidirectional thyristor static switch drive module connected to the bidirectional thyristor static switch, and control the bidirectional thyristor static switch to be turned off by the drive signal.

[0104] The power supply mode switching device provided in this embodiment can execute the above method embodiment, and its implementation principle and technical effect are similar, which will not be repeated here.

[0105] Each module in the above power supply mode switching device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0106] In one embodiment, a controller is provided. The controller may be a controller of a single chip microcomputer, and its internal structure diagram may be as follows: Figure 8As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for switching a power supply mode is implemented.

[0107] Those skilled in the art will understand that Figure 8 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0108] In one embodiment, a controller is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0109] Receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when the inverter power supply mode of the UPS power supply system is abnormal;

[0110] Determine the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction;

[0111] When the bidirectional thyristor static switch of the UPS system is in the disconnected state and the power supply state of the UPS system is in the normal state, the bidirectional thyristor static switch is controlled to be turned on, so that the power supply mode of the UPS power supply system is switched from the inverter power supply mode to the bypass power supply mode;

[0112] When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the relay is controlled to be turned on and the bidirectional thyristor static switch is controlled to be turned off, so that power is supplied to the load equipment of the UPS system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

[0113] The implementation principle and technical effect of the controller provided in the above embodiment are similar to those of the above method embodiment, and will not be repeated here.

[0114] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0115] Receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when the inverter power supply mode of the UPS power supply system is abnormal;

[0116] Determine the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction;

[0117] When the bidirectional thyristor static switch of the UPS system is in the disconnected state and the power supply state of the UPS system is in the normal state, the bidirectional thyristor static switch is controlled to be turned on, so that the power supply mode of the UPS power supply system is switched from the inverter power supply mode to the bypass power supply mode;

[0118] When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the relay is controlled to be turned on and the bidirectional thyristor static switch is controlled to be turned off, so that power is supplied to the load equipment of the UPS system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

[0119] The computer-readable storage medium provided in the above embodiment has similar implementation principles and technical effects as those of the above method embodiment, and will not be described in detail here.

[0120] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0121] Receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when the inverter power supply mode of the UPS power supply system is abnormal;

[0122] Determine the operating state of the bidirectional thyristor static switch of the UPS system and the power supply state of the UPS system according to the trigger instruction;

[0123] When the bidirectional thyristor static switch of the UPS system is in the disconnected state and the power supply state of the UPS system is in the normal state, the bidirectional thyristor static switch is controlled to be turned on, so that the power supply mode of the UPS power supply system is switched from the inverter power supply mode to the bypass power supply mode;

[0124] When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the relay is controlled to be turned on and the bidirectional thyristor static switch is controlled to be turned off, so that power is supplied to the load equipment of the UPS system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

[0125] The implementation principle and technical effect of the computer program product provided in the above embodiment are similar to those of the above method embodiment, and will not be repeated here.

[0126] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0127] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0128] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0129] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for switching a power supply mode, characterized in that: The method comprises: Receiving a trigger instruction sent by an uninterruptible power supply UPS power supply system; the trigger instruction is generated when an inverter power supply mode of the UPS power supply system is abnormal; Acquire the bidirectional thyristor static switch state detection parameters and the power supply voltage parameters of the UPS power supply system according to the trigger instruction; the power supply voltage parameters include the mains input voltage parameters, the output voltage parameters of the inverter output end of the UPS power supply system and the output voltage parameters of the UPS power supply system; Determine the operating state of the bidirectional thyristor static switch of the UPS power supply system according to the bidirectional thyristor static switch state detection parameter; When the mains input voltage parameter, the output voltage parameter of the inverter output terminal, and the output voltage parameter of the UPS power supply system are all within a preset voltage range, determining that the power supply state of the UPS power supply system is a normal state; When the bidirectional thyristor static switch of the UPS power supply system is in an off state and the power supply state of the UPS power supply system is in a normal state, controlling the bidirectional thyristor static switch to be turned on so that the power supply mode of the UPS power supply system is switched from an inverter power supply mode to a bypass power supply mode; When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, the relay is controlled to be turned on and the bidirectional thyristor static switch is controlled to be turned off, so that power is supplied to the load equipment of the UPS power supply system through the relay; wherein the relay is connected in parallel with the bidirectional thyristor static switch.

2. The method according to claim 1, characterized in that: When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, controlling the relay to be turned on includes: A control signal is sent to the relay, and the relay is controlled to be turned on by the control signal.

3. The method according to claim 1 or 2, characterized in that: When it is determined that the power supply mode of the UPS power supply system is switched to the bypass power supply mode, controlling the bidirectional thyristor static switch to be disconnected comprises: A driving signal is sent to a bidirectional thyristor static switch driving module connected to the bidirectional thyristor static switch, and the bidirectional thyristor static switch is controlled to be disconnected by the driving signal.

4. The method according to claim 1, characterized in that: The step of determining the operating state of the bidirectional thyristor static switch of the UPS power supply system according to the bidirectional thyristor static switch state detection parameter comprises: When the bidirectional thyristor static switch state detection parameter indicates that the bidirectional thyristor static switch is disconnected, it is determined that the bidirectional thyristor static switch is in the disconnected state.

5. The method according to claim 1, characterized in that The bidirectional thyristor static switch state detection parameters include current signals at the input end and the output end of the bidirectional thyristor static switch.

6. A power supply mode switching system, characterized in that: The system comprises an uninterruptible power supply UPS power supply system, a controller and a load device; the UPS power supply system is connected to the controller and the load device respectively; the UPS power supply system comprises a bidirectional thyristor static switch, a relay and a bidirectional thyristor static switch driving module; the bidirectional thyristor static switch and the relay are connected in parallel; the bidirectional thyristor static switch and the bidirectional thyristor static switch driving module are connected; The controller is used to execute the power supply mode switching method described in any one of claims 1 to 5 above; The UPS power supply system is used to supply power to the load equipment.

7. The power supply mode switching system according to claim 6, characterized in that: The controller is a controller of a single chip microcomputer connected to the UPS power supply system.

8. A controller comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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