Abnormal function module resection method, system, device and controller
By acquiring the operating parameters of the converter valve's functional modules, determining their status, and controlling the conduction of trigger switches and bypass switches, the problem of inaccurate removal of abnormal modules in the converter valve is solved, enabling rapid and accurate module removal and ensuring system stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- MAINTENANCE & TEST CENTRE CSG EHV POWER TRANSMISSION CO
- Filing Date
- 2022-09-26
- Publication Date
- 2026-06-02
AI Technical Summary
In existing technologies, the removal of abnormal functional modules in converter valves is not precise enough, which affects system stability.
By acquiring the operating parameters of the functional modules in the converter valve, determining their operating status, and controlling the conduction of the trigger switch and bypass switch in abnormal situations, the rapid closing characteristics of the trigger switch and the stability of the bypass switch are utilized to achieve rapid and accurate disconnection of abnormal modules.
This enables the rapid and precise removal of abnormal functional modules in the converter valve, ensuring the normal operation of other functional modules and improving the stability and reliability of the system.
Smart Images
Figure CN115603555B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of converter valve control technology, and in particular to a method, system, device and controller for removing abnormal function modules. Background Technology
[0002] With the development of power grids, converter valves, as core equipment in DC transmission projects, play a vital role in the transmission of electrical energy. When a functional module (such as the power module) in a converter valve malfunctions, it will cause other functional modules of the entire converter valve to malfunction.
[0003] To address the aforementioned technical issues, a bypass switch is typically used to disconnect the faulty functional module from the main circuit, thereby ensuring the normal operation of other functional modules. However, this method can easily lead to inaccurate timing of the faulty module disconnection, which can affect system stability. Summary of the Invention
[0004] Therefore, it is necessary to provide a method, system, device, and controller for removing abnormal function modules that can achieve rapid and accurate closing, in response to the above-mentioned technical problems.
[0005] In one embodiment, a method for removing an abnormal function module is provided, the method comprising:
[0006] Obtain the operating parameters of each functional module in the converter valve; the operating parameters are used to characterize the operating status of the functional modules;
[0007] Determine whether the functional module is operating normally based on its operating parameters;
[0008] In the event of an abnormal operation of a functional module, the trigger switch is activated, and in the event of the trigger switch being activated, the bypass switch is activated.
[0009] The first end of the bypass switch is used to connect to the first end of the functional module, and the second end of the bypass switch is used to connect to the second end of the functional module; the first end of the trigger switch is used to connect to the first end of the functional module, and the second end of the trigger switch is used to connect to the second end of the functional module.
[0010] In one embodiment, in the event of a functional module malfunction, controlling the trigger switch to turn on, and controlling the bypass switch to turn on when the trigger switch is on, includes:
[0011] In the event of an abnormal operation of a functional module, a trigger signal is output to the discharge circuit. The trigger signal is used to indicate that the discharge circuit outputs a conduction trigger signal, which in turn indicates that the trigger switch is turned on, and is used to trigger the bypass switch to turn on when the trigger switch is turned on.
[0012] The output terminal of the discharge circuit is connected to the third terminal of the trigger switch and the third terminal of the bypass switch, respectively.
[0013] In one embodiment, the discharge circuit includes a first thyristor and a second thyristor; the conduction trigger signal includes a first signal and a second signal; in the event of an abnormal operation of the functional module, a trigger signal is output to the discharge circuit, including:
[0014] In the event of an abnormal operation of a functional module, a trigger signal is output to the first thyristor, and after the first thyristor receives the trigger signal, a trigger signal is output to the second thyristor.
[0015] The anode of the first thyristor is connected to the fourth terminal of the bypass switch, the cathode of the first thyristor is grounded, and the first thyristor is used to output a first signal to the bypass switch under the control of the trigger signal.
[0016] The anode of the second thyristor is connected to the fourth terminal of the trigger switch, and the cathode of the second thyristor is grounded. The second thyristor is used to output a second signal to the trigger switch under the control of the trigger signal.
[0017] In one embodiment, after the step of controlling the bypass switch to turn on when the trigger switch is turned on, the method further includes:
[0018] After the bypass switch is turned on, the trigger switch is turned off.
[0019] Secondly, a system for removing abnormal function modules is provided, the system comprising:
[0020] The bypass switch has its first terminal connected to the first terminal of each functional module in the converter valve, and its second terminal connected to the second terminal of the functional module.
[0021] A trigger switch, the first end of which is used to connect to the first end of the functional module, and the second end of which is used to connect to the second end of the functional module;
[0022] The controller is connected to the third terminal of the bypass switch and the third terminal of the trigger switch, respectively. The controller is used to execute the steps of the method in any of the above-described abnormal function module removal method embodiments.
[0023] In one embodiment, the system further includes:
[0024] The discharge circuit has its output terminal connected to the third terminal of the bypass switch and the third terminal of the trigger switch, respectively.
[0025] The controller is connected to the controlled end of the discharge circuit;
[0026] Under the control of the trigger signal output by the controller, the discharge circuit outputs a conduction trigger signal. The conduction trigger signal is used to indicate that the trigger switch is turned on, and to trigger the bypass switch to turn on when the trigger switch is turned on.
[0027] In one embodiment, the discharge circuit includes:
[0028] The first thyristor has its anode connected to the fourth terminal of the bypass switch, its cathode grounded, and its gate connected to the control terminal of the controller. After receiving a trigger signal, the first thyristor outputs a first signal to the bypass switch to control the bypass switch to turn on.
[0029] The second thyristor has its anode connected to the fourth terminal of the trigger switch, its cathode grounded, and its gate connected to the control terminal of the controller. After receiving the trigger signal and after the first thyristor receives the trigger signal, the second thyristor outputs a second signal to the trigger switch to control the trigger switch to turn on.
[0030] In one embodiment, the discharge circuit further includes:
[0031] The first diode has its anode connected to the anode of the first thyristor, and its cathode connected to the third terminal of the functional module.
[0032] The anode of the second diode is connected to the anode of the second thyristor, and the cathode of the second diode is connected to the third terminal of the functional module.
[0033] Thirdly, in one embodiment, an abnormal function module removal device is provided, the device comprising:
[0034] The acquisition module is used to acquire the operating parameters of each functional module of the converter valve; the operating parameters are used to characterize the operating status of the functional modules.
[0035] The judgment module is used to determine whether the functional module is operating normally based on the operating parameters of the functional module;
[0036] The control module is used to control the trigger switch to turn on when the functional module is malfunctioning, and to control the bypass switch to turn on when the trigger switch is on.
[0037] The first end of the bypass switch is used to connect to the first end of the functional module, and the second end of the bypass switch is used to connect to the second end of the functional module; the first end of the trigger switch is used to connect to the first end of the functional module, and the second end of the trigger switch is used to connect to the second end of the functional module.
[0038] Fourthly, in one embodiment, a controller is provided, including a memory and a processor, the memory storing a computer program, the processor executing the computer program to implement the steps of the method in any of the above-described abnormal function module removal method embodiments.
[0039] This application has at least the following beneficial effects:
[0040] The aforementioned method, system, device, and controller for disconnecting abnormal functional modules acquire the operating parameters of each functional module in the converter valve, determine the operating status of the functional modules based on these parameters, and thus judge whether the functional modules are operating normally. In the event of an abnormal functional module, the trigger switch connected in parallel with the abnormal functional module is activated to disconnect that functional module from the main circuit; and with the trigger switch activated, the bypass switch is also activated. Leveraging the advantages of the trigger switch's short closing time and small closing time error, combined with the stability of the bypass switch, this system achieves rapid and precise disconnection of the abnormal functional module from the main circuit, thereby ensuring the normal operation of other functional modules in the converter valve. Attached Figure Description
[0041] Figure 1 This is a flowchart illustrating a method for removing abnormal function modules in one embodiment;
[0042] Figure 2 Here are the voltage-time curves corresponding to the trigger switch and bypass switch in one embodiment;
[0043] Figure 3 This is a flowchart illustrating the method for removing abnormal function modules in another embodiment;
[0044] Figure 4 This is a flowchart illustrating the method for removing abnormal function modules in another embodiment;
[0045] Figure 5 This is a schematic diagram of the internal structure of the trigger switch in one embodiment;
[0046] Figure 6 This is a schematic diagram of the structure of an abnormal function module removal system in one embodiment;
[0047] Figure 7 This is a flowchart illustrating the method for removing abnormal function modules in yet another embodiment;
[0048] Figure 8 This is a structural block diagram of an abnormal function module removal device in one embodiment;
[0049] Figure 9 This is a diagram of the internal structure of the controller in one embodiment. Detailed Implementation
[0050] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0051] In one embodiment, such as Figure 1 As shown, a method for removing abnormal function modules is provided. Taking the application of this method to the controller in a converter valve as an example, the method includes the following steps:
[0052] Step S102: Obtain the operating parameters of each functional module in the converter valve; the operating parameters are used to characterize the operating status of the functional modules.
[0053] In this context, a functional module refers to a module that performs different functions during the power transmission process of the converter valve in the power grid. For example, functional modules may include, but are not limited to, a filtering module, a reactive power compensation module, and a power module within the converter valve. In this embodiment, since the power module is the core module of the entire converter valve and plays a crucial role in the power transmission process, it is specifically selected as the power module. Operating parameters include, but are not limited to, the voltage, current, and signal transmission strength between modules during the operation of the functional module. In a specific embodiment, the operating parameters of each functional module may specifically be the voltage of the main capacitor in the converter valve's power module, or the power supply current to the mainboard within the power module, or the signal transmission strength between electronic components on the mainboard.
[0054] Specifically, operating parameters can be obtained through a detection device built into the functional module or an external detection device, and the controller further obtains the parameters from the detection device. In one specific embodiment, operating parameters can be directly obtained through the detection device built into the functional module. Compared to obtaining them through an external detection device, this method is faster, more accurate, and avoids interference from other signals during the detection process. Furthermore, integrating the detection device into the functional module improves the integration level of the device and reduces its size.
[0055] Step S104: Determine whether the functional module is operating normally based on its operating parameters.
[0056] Specifically, after acquiring the operating parameters of the functional module, the controller compares these parameters with a parameter threshold. If the value of the operating parameter is greater than or less than the parameter threshold, it determines whether the functional module is operating normally. In one specific embodiment, when the functional module is a power module, if the operating parameter represents the voltage of the main capacitor in the power module, and the voltage is too high, the power module is determined to be operating abnormally. Similarly, if the operating parameter is the power supply current of the motherboard in the power module, and the power supply current is too high or too low, the power module will be determined to be operating abnormally.
[0057] Step S106: In the event of an abnormal operation of a functional module, control the trigger switch to be turned on, and in the case of the trigger switch being turned on, control the bypass switch to be turned on.
[0058] The first end of the bypass switch is used to connect to the first end of the functional module, and the second end of the bypass switch is used to connect to the second end of the functional module; the first end of the trigger switch is used to connect to the first end of the functional module, and the second end of the trigger switch is used to connect to the second end of the functional module.
[0059] The first terminal of the functional module is the power input terminal, and the second terminal is the output terminal. The bypass switch and the functional module are connected in parallel, as are the trigger switch and the bypass switch. The closing time of the trigger switch is much shorter than that of the bypass switch, and the closing time accuracy of the trigger switch is higher than that of the bypass switch.
[0060] Specifically, in the event of a functional module malfunction, the controller first turns on the trigger switch (i.e., first closes the trigger switch). Since the trigger switch is prone to burnout if it remains closed for an extended period, leading to malfunction, a bypass switch must be turned on while the trigger switch is on to disconnect the malfunctioning functional module from the main circuit. In one specific embodiment, such as... Figure 2 As shown, when a functional module malfunctions, a pulse voltage is applied to the input terminals of both the trigger switch and the bypass switch. When the pulse voltage has a certain amplitude, the trigger switch is turned on, and before the current generated by the pulse voltage crosses zero, that is, before the trigger switch is turned off, the bypass switch is closed, thereby cutting off the malfunctioning functional module from the main circuit.
[0061] In the above embodiments, by acquiring the operating parameters of each functional module in the converter valve, the operating status of the functional module is determined based on the operating parameters, thereby judging whether the functional module is operating normally. In the event of an abnormal operation of a functional module, the trigger switch connected in parallel with the abnormal functional module is turned on, disconnecting the functional module from the main circuit; and while the trigger switch is on, the bypass switch is turned on. Based on the advantages of the trigger switch's short closing time and small closing time error, combined with the stability of the bypass switch, this allows for rapid and precise disconnection of the functional module from the main circuit when an abnormality occurs, thereby ensuring the normal operation of other functional modules in the converter valve.
[0062] In one embodiment, such as Figure 3 As shown, in the event of an abnormal operation of a functional module, the trigger switch is activated, and when the trigger switch is activated, the bypass switch is activated, including:
[0063] Step S302: In the event of an abnormal operation of the functional module, a trigger signal is output to the discharge circuit. The trigger signal is used to indicate that the discharge circuit outputs a conduction trigger signal, which is used to indicate that the trigger switch is turned on, and is used to trigger the bypass switch to turn on when the trigger switch is turned on.
[0064] The output terminal of the discharge circuit is connected to the third terminal of the trigger switch and the third terminal of the bypass switch, respectively.
[0065] The trigger signal can be an electrical signal or an optical signal. Specifically, the electrical signal can be a voltage signal or a current signal. For example, in one specific embodiment, the trigger signal is a voltage signal, which serves to provide a driving voltage for the operation of the discharge circuit. The discharge circuit refers to a drive circuit integrating a series of electronic components used to control the trigger switch and bypass switch under the control of the trigger signal output by the controller, or it can be a trigger circuit. The input terminal of the discharge circuit can be connected to the third terminal of the functional module, that is, connected to the output terminal of the functional module. In this case, the functional module acts as the power supply for the discharge circuit. Alternatively, it can be connected to the output terminal of an external power supply, meaning the power supply for the discharge circuit can be obtained from the functional module or from an external power supply. In one specific embodiment, the power supply voltage is obtained from the functional module. The conduction trigger signal refers to an electrical or optical signal output by the discharge circuit after receiving the above-mentioned trigger signal, used to drive the trigger switch and bypass switch to conduct. Specifically, the electrical signal can be a voltage signal or a current signal. For example, in one specific embodiment, the conduction trigger signal is a voltage signal, which serves to provide voltage for the conduction of the trigger signal and the bypass switch. The third terminal of the trigger switch is the input terminal of the trigger switch, and the third terminal of the bypass switch is the input terminal of the bypass switch.
[0066] Specifically, in the event of a functional module malfunction, the controller outputs a trigger signal to the discharge circuit. Upon receiving the trigger signal, the discharge circuit performs a driving action. At this time, the discharge circuit can draw power from the functional module or from an external power source, thereby outputting a conduction trigger signal to control the conduction of the trigger switch and bypass switch. For example, in one specific embodiment, when the functional module is a power module, the input terminal of the discharge circuit is connected to the output terminal of the functional module. After receiving the voltage signal output by the controller, the discharge circuit is driven to operate. At this time, the power module supplies power to the functional module, and the discharge circuit outputs voltage to the trigger switch and bypass switch to maintain their conduction.
[0067] In the above embodiments, by setting up a discharge circuit and controlling the trigger switch and bypass switch, precise closing can be achieved. Furthermore, when the functional module acts as the power source for the discharge circuit, energy can be saved and energy consumption reduced.
[0068] In one embodiment, such as Figure 4 As shown, the discharge circuit includes a first thyristor and a second thyristor; the conduction trigger signal includes a first signal and a second signal; in the event of an abnormal operation of the functional module, a trigger signal is output to the discharge circuit, including:
[0069] Step S402: In the event of an abnormal operation of the functional module, a trigger signal is output to the first thyristor, and after the first thyristor receives the trigger signal, a trigger signal is output to the second thyristor.
[0070] The anode of the first thyristor is connected to the fourth terminal of the bypass switch, the cathode of the first thyristor is grounded, and the first thyristor is used to output a first signal to the bypass switch under the control of the trigger signal.
[0071] The anode of the second thyristor is connected to the fourth terminal of the trigger switch, and the cathode of the second thyristor is grounded. The second thyristor is used to output a second signal to the trigger switch under the control of the trigger signal.
[0072] In this circuit, the fourth terminal of the bypass switch is the cathode of the bypass switch, and the fourth terminal of the trigger switch is the cathode of the trigger switch. Specifically, taking the trigger switch as an example, the specific terminal positions are as follows: Figure 5 As shown. The first signal is a point signal or optical signal output to the bypass switch. Specifically, the electrical signal includes a voltage signal and a current signal. In one specific embodiment, the first signal refers to the operating voltage used to maintain the bypass switch on. Similarly, the second signal refers to the operating voltage used to maintain the trigger switch on.
[0073] Specifically, such as Figure 6As shown, when the functional module malfunctions, the controller 606 outputs a trigger signal to the controlled terminal of the first thyristor S1 in the discharge circuit 608. The first thyristor S1 is in the conducting state under the control of the trigger signal. At this time, the trigger signal of the controller 606 is output to the controlled terminal of the second thyristor S2. The second thyristor S2 is in the conducting state under the control of the trigger signal.
[0074] In the above embodiments, since the closing time of the bypass switch is much longer than that of the trigger switch, the trigger signal is first output to the first thyristor and then to the second thyristor. Based on the regulation of the frequency of pulse voltage amplitude change, the closing of the trigger switch and the bypass switch is coordinated in time, thereby achieving precise closing.
[0075] In one embodiment, such as Figure 7 As shown, after the step of controlling the bypass switch to turn on when the trigger switch is turned on, the following steps are also included:
[0076] Step S702: After the bypass switch is turned on, the switch is triggered to turn off.
[0077] To further illustrate the solution of this application, a specific example is provided below, which uses an application in a flow converter valve as an example. Figure 6 As shown, terminals A and B are connected to other adjacent power modules, respectively. The specific connection relationships of other functional modules and electronic components can be seen in the figure; those skilled in the art can directly understand the specific implementation from the figure. In this case, the functional module is a power module, and a detection device (not shown in the figure) is also provided inside the power module; the trigger signal is a voltage signal used to drive the first thyristor S1 and the second thyristor S2 in the discharge circuit 608 to conduct, respectively. The first signal in the conduction trigger signal is a voltage signal used to maintain the bypass switch 602 on, and the second signal is a voltage signal used to maintain the trigger switch 604 on.
[0078] The specific implementation method is as follows:
[0079] The built-in power module detection device detects the operating parameters of the power module (including the voltage of the main capacitor C in the power module, the power supply voltage and current of other boards in the power module, and the signal transmission strength between electronic components, etc.). The controller 606 obtains the above operating parameters from the detection device and determines whether the power module is operating normally based on the operating parameters. In the case of abnormal operation of the power module, that is, when the voltage of the main capacitor C is too high or the power supply voltage and current of the boards are too high or too low, the controller 606 first outputs a trigger signal (voltage signal) to the first thyristor S1 in the discharge circuit 608 to turn on the first thyristor S1, and then outputs a trigger signal (voltage signal) to the second thyristor S2 in the discharge circuit 608 to turn on the second thyristor S2. At this time, the main capacitor C charges capacitors C1 and C2. After capacitors C1 and C2 are fully charged, charging stops. When the first thyristor S1 is conducting, C1 outputs current to the third terminal of bypass switch 602, i.e., the trigger electrode of bypass switch 602. A strong electric field is generated between the trigger electrode and the cathode of bypass switch 602. The metal conductor of the trigger electrode emits initial electrons towards the cathode, bombarding the cathode surface. The cathode material evaporates and ionizes. The large amount of plasma generated in this process reduces the insulation strength between the cathode and anode, thereby turning on bypass switch 602. Similarly, the conduction principle of trigger switch 604 is the same. Since the closing time of bypass switch 602 is longer than that of trigger switch 604, by first transmitting the trigger signal to the first thyristor S1, bypass switch 602 closes first. Then, the trigger signal is transmitted to the second thyristor S2. By adjusting the closing times of the two, bypass switch 602 is closed before trigger switch 604 cuts off current, thus achieving rapid and accurate closing and removing the abnormal power module from the main circuit.
[0080] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.
[0081] Based on the same inventive concept, this application also provides an abnormal function module removal device for implementing the abnormal function module removal method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the abnormal function module removal device provided below can be found in the limitations of the abnormal function module removal method described above, and will not be repeated here.
[0082] In one embodiment, such as Figure 8 As shown, an abnormal function module removal device is provided, including: an acquisition module 802, a judgment module 804, and a control module 806, wherein:
[0083] The acquisition module 802 is used to acquire the operating parameters of each functional module of the converter valve; the operating parameters are used to characterize the operating status of the functional modules.
[0084] The judgment module 804 is used to determine whether the functional module is operating normally based on the operating parameters of the functional module;
[0085] Control module 806 is used to control the trigger switch to be turned on when the functional module is malfunctioning, and to control the bypass switch to be turned on when the trigger switch is turned on.
[0086] The first end of the bypass switch is used to connect to the first end of the functional module, and the second end of the bypass switch is used to connect to the second end of the functional module; the first end of the trigger switch is used to connect to the first end of the functional module, and the second end of the trigger switch is used to connect to the second end of the functional module.
[0087] In one embodiment, the control module 806 further includes:
[0088] The signal output control unit is used to output a trigger signal to the discharge circuit when the functional module malfunctions; the trigger signal is used to indicate that the discharge circuit outputs a conduction trigger signal, the conduction trigger signal is used to indicate that the trigger switch is turned on, and is used to trigger the bypass switch to turn on when the trigger switch is turned on.
[0089] The output terminal of the discharge circuit is connected to the third terminal of the trigger switch and the third terminal of the bypass switch, respectively.
[0090] In one embodiment, the signal output unit further includes:
[0091] The secondary signal output control unit is used to output a trigger signal to the first thyristor when the functional module is malfunctioning, and to output a trigger signal to the second thyristor after the first thyristor receives the trigger signal.
[0092] The anode of the first thyristor is connected to the fourth terminal of the bypass switch, the cathode of the first thyristor is grounded, and the first thyristor is used to output a first signal to the bypass switch under the control of the trigger signal.
[0093] The anode of the second thyristor is connected to the fourth terminal of the trigger switch, and the cathode of the second thyristor is grounded. The second thyristor is used to output a second signal to the trigger switch under the control of the trigger signal.
[0094] In one embodiment, the aforementioned abnormal function module removal device further includes:
[0095] The shutdown module is used to trigger the switch to shut down after the bypass switch is turned on.
[0096] Each module in the aforementioned abnormal function module removal device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the controller in hardware form or independent of it, or stored in the memory of the controller in software form, so that the processor can call and execute the operations corresponding to each module.
[0097] In one embodiment, such as Figure 6 As shown, an abnormal function module removal system is provided, the system comprising:
[0098] Bypass switch 602, the first end of bypass switch 602 is used to connect to the first end of each functional module in the converter valve, and the second end of bypass switch 602 is used to connect to the second end of the functional module;
[0099] Trigger switch 604, the first end of trigger switch 604 is used to connect to the first end of the functional module, and the second end of trigger switch 604 is used to connect to the second end of the functional module;
[0100] The controller 606 is connected to the third terminal of the bypass switch 602 and the third terminal of the trigger switch 604, respectively. The controller 606 is used to execute the steps of the method in any of the above embodiments of the abnormal function module removal method.
[0101] In one embodiment, such as Figure 6 As shown, the system also includes:
[0102] The discharge circuit 608 has its output terminal connected to the third terminal of the bypass switch 602 and the third terminal of the trigger switch 604, respectively.
[0103] The controller 606 is connected to the controlled terminal of the discharge circuit 608;
[0104] Under the control of the trigger signal output by the controller 606, the discharge circuit 608 outputs a conduction trigger signal. The conduction trigger signal is used to indicate that the trigger switch 604 is turned on, and to trigger the bypass switch 602 to turn on when the trigger switch 604 is turned on.
[0105] In one embodiment, the input terminal of the discharge circuit 608 is used to connect to the third terminal of the functional module to draw power from the functional module. For example, it can be powered from... Figure 6 The capacitor C shown is powered from its two ends.
[0106] In one embodiment, such as Figure 6 As shown, the discharge circuit 608 includes:
[0107] The first thyristor S1 has its anode connected to the fourth terminal of the bypass switch 602, its cathode grounded, and its gate connected to the control terminal of the controller 606. After receiving a trigger signal, the first thyristor S1 outputs a first signal to the bypass switch 602 to control the bypass switch 602 to turn on.
[0108] The first thyristor S2 has its anode connected to the fourth terminal of the trigger switch 604, its cathode grounded, and its gate connected to the control terminal of the controller 606. After receiving a trigger signal and after the first thyristor S1 receives a trigger signal, the first thyristor S2 outputs a second signal to the trigger switch 604 to control the trigger switch 604 to turn on.
[0109] In one embodiment, such as Figure 6 As shown, the discharge circuit 608 also includes:
[0110] The first diode D1 has its anode connected to the anode of the first thyristor S1, and its cathode connected to the third terminal of the functional module.
[0111] The anode of the second diode D2 is connected to the anode of the first thyristor S2, and the cathode of the second diode D2 is connected to the third terminal of the functional module.
[0112] In the above embodiments, by connecting the first diode D1 and the second diode D2 in the discharge circuit 608, reverse voltage is prevented from forming during the process of turning on the trigger switch 604 and the bypass switch 602 based on the first thyristor S1 and the first thyristor S2, which could lead to component damage, thereby ensuring the safety of the circuit.
[0113] In one embodiment, a controller is provided, which may be a server, and its internal structure diagram may be as follows: Figure 9As shown, the controller includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The controller's memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media. The controller's database stores the operating parameter data of functional modules. The controller's I / O interfaces are used for exchanging information between the processor and external devices. The controller's communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a method for scrambling abnormal functional modules.
[0114] Those skilled in the art will understand that Figure 9 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the controller to which the present application is applied. A specific controller may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.
[0115] In one embodiment, a controller is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.
[0116] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps in the above method embodiments.
[0117] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the method embodiments described above.
[0118] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this 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), magnetic 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. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.
[0119] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.
[0120] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A method for removing abnormal functional modules, characterized in that, The method includes: Obtain the operating parameters of each functional module in the converter valve; the operating parameters are used to characterize the operating status of the functional module; Based on the operating parameters of the functional module, determine whether the functional module is operating normally; In the event of an abnormal operation of the functional module, the trigger switch is turned on, and in the event of the trigger switch being turned on, the bypass switch is turned on. Wherein, the first end of the bypass switch is used to connect to the first end of the functional module, and the second end of the bypass switch is used to connect to the second end of the functional module; the first end of the trigger switch is used to connect to the first end of the functional module, and the second end of the trigger switch is used to connect to the second end of the functional module. In the event of an malfunction in the functional module, controlling the trigger switch to turn on, and in the event that the trigger switch is turned on, controlling the bypass switch to turn on, includes: In the event of an malfunction in the functional module, a trigger signal is output to the discharge circuit; the trigger signal is used to indicate that the discharge circuit outputs a conduction trigger signal, the conduction trigger signal is used to indicate that the trigger switch is turned on, and is used to trigger the bypass switch to turn on when the trigger switch is turned on; The output terminal of the discharge circuit is connected to the third terminal of the trigger switch and the third terminal of the bypass switch, respectively. The discharge circuit includes a first thyristor and a second thyristor; the conduction trigger signal includes a first signal and a second signal; in the event of an malfunction in the functional module, a trigger signal is output to the discharge circuit, including: In the event of an malfunction in the functional module, the trigger signal is output to the first thyristor, and after the first thyristor receives the trigger signal, the trigger signal is output to the second thyristor. Wherein, the anode of the first thyristor is connected to the fourth terminal of the bypass switch, the cathode of the first thyristor is grounded, and the first thyristor is used to output the first signal to the bypass switch under the control of the trigger signal; The anode of the second thyristor is connected to the fourth terminal of the trigger switch, and the cathode of the second thyristor is grounded. The second thyristor is used to output the second signal to the trigger switch under the control of the trigger signal.
2. The method according to claim 1, characterized in that, After the step of controlling the bypass switch to turn on when the trigger switch is turned on, the method further includes: After the bypass switch is turned on, the trigger switch is turned off.
3. A system for removing abnormal function modules, characterized in that, include: A bypass switch, wherein the first end of the bypass switch is used to connect to the first end of each functional module in the converter valve, and the second end of the bypass switch is used to connect to the second end of the functional module; A trigger switch, wherein the first end of the trigger switch is used to connect to the first end of the functional module, and the second end of the trigger switch is used to connect to the second end of the functional module; A controller, which is connected to the third terminal of the bypass switch and the third terminal of the trigger switch respectively, is used to perform the steps of the method according to any one of claims 1-2.
4. The abnormal function module removal system according to claim 3, characterized in that, Also includes: A discharge circuit, the output terminal of which is connected to the third terminal of the bypass switch and the third terminal of the trigger switch, respectively; The controller is connected to the controlled end of the discharge circuit; The discharge circuit outputs a conduction trigger signal under the control of the trigger signal output by the controller. The conduction trigger signal is used to indicate that the trigger switch is turned on, and to trigger the bypass switch to turn on when the trigger switch is turned on.
5. The abnormal function module removal system according to claim 4, characterized in that, The discharge circuit includes: The first thyristor has its anode connected to the fourth terminal of the bypass switch, its cathode grounded, and its gate connected to the control terminal of the controller. After receiving the trigger signal, the first thyristor outputs a first signal to the bypass switch to control the bypass switch to turn on. The second thyristor has its anode connected to the fourth terminal of the trigger switch, its cathode grounded, and its gate connected to the control terminal of the controller. After receiving the trigger signal and after the first thyristor receives the trigger signal, the second thyristor outputs a second signal to the trigger switch to control the trigger switch to turn on.
6. The abnormal function module removal system according to claim 4, characterized in that, The discharge circuit also includes: The first diode has its anode connected to the anode of the first thyristor, and its cathode connected to the third terminal of the functional module. The second diode has its anode connected to the anode of the second thyristor, and its cathode connected to the third terminal of the functional module.
7. A device for removing abnormal function modules, characterized in that, The device includes: An acquisition module is used to acquire the operating parameters of each functional module of the converter valve; the operating parameters are used to characterize the operating status of the functional module. The judgment module is used to determine whether the functional module is operating normally based on the operating parameters of the functional module; The control module is used to control the trigger switch to be turned on when the functional module is malfunctioning, and to control the bypass switch to be turned on when the trigger switch is turned on. Wherein, the first end of the bypass switch is used to connect to the first end of the functional module, and the second end of the bypass switch is used to connect to the second end of the functional module; the first end of the trigger switch is used to connect to the first end of the functional module, and the second end of the trigger switch is used to connect to the second end of the functional module. The control module also includes: The signal output control unit is used to output a trigger signal to the discharge circuit when the functional module malfunctions; the trigger signal is used to indicate that the discharge circuit outputs a conduction trigger signal, the conduction trigger signal is used to indicate that the trigger switch is turned on, and is used to trigger the bypass switch to turn on when the trigger switch is turned on. The output terminal of the discharge circuit is connected to the third terminal of the trigger switch and the third terminal of the bypass switch, respectively. The signal output control unit also includes: The secondary signal output control unit is used to output a trigger signal to the first thyristor when the functional module is malfunctioning, and to output a trigger signal to the second thyristor after the first thyristor receives the trigger signal. The anode of the first thyristor is connected to the fourth terminal of the bypass switch, the cathode of the first thyristor is grounded, and the first thyristor is used to output a first signal to the bypass switch under the control of the trigger signal. The anode of the second thyristor is connected to the fourth terminal of the trigger switch, and the cathode of the second thyristor is grounded. The second thyristor is used to output a second signal to the trigger switch under the control of the trigger signal.
8. A controller comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor performs the steps of the method according to any one of claims 1 to 2 when executing the computer program.