Valve control system control method and device, computer device and storage medium

Abstract

The application relates to a valve control system control method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: in the case that a first trigger signal for a converter valve is received from a direct-current control system corresponding to a valve control system, determining the running state of the valve control system and the running state of a direct-current system corresponding to the direct-current control system, and determining the running state of the converter valve according to the first trigger signal and a return signal sent by the converter valve; in the case that the running state of the valve control system, the running state of the direct-current system, the first trigger signal and the running state of the converter valve all meet respective preset conditions, sending a second trigger signal to the converter valve, and returning a trigger feedback signal corresponding to the first trigger signal to the direct-current control system. The method can reduce the damage risk of the converter valve.

Description

Technical Field

[0001] This application relates to the field of high voltage direct current transmission control technology, and in particular to a valve control system control method, device, computer equipment, storage medium and computer program product. Background Technology

[0002] In high-voltage direct current (HVDC) transmission control technology, the valve control system serves as the interface device between the DC control system and the converter valve. Through signal interaction with the DC control system, it enables the triggering control and operational status monitoring of the converter valve. Meanwhile, the DC control system, through signal interaction with the valve control system, enables the control and protection of the converter valve.

[0003] Under normal circumstances, after the converter valve is charged, the DC control system sends a converter valve trigger signal to the valve control system. In response to the received trigger signal, the valve control system sends a trigger pulse signal to the converter valve to control its operation. Simultaneously, it returns a trigger pulse feedback signal to the DC control system. This allows the DC control system's converter valve false triggering / pulse loss protection function to determine whether the converter valve has been triggered correctly based on the timing logic of the trigger signal and the trigger pulse feedback signal. If the converter valve's operating state is abnormal, it will promptly take protective measures. Therefore, the trigger pulse feedback signal returned by the valve control system directly determines whether the converter valve false triggering / pulse loss protection function can operate correctly, protecting the converter valve from damage.

[0004] However, in practical applications, it has been found that there is no necessary relationship between the action of the valve control system sending a trigger pulse signal to the converter valve and the action of returning a trigger pulse feedback signal to the DC control system. In other words, even if the valve control system fails to send a trigger pulse signal to the converter valve or fails to send a trigger pulse signal to the converter valve, the valve control system will still return a trigger pulse feedback signal to the DC control system. This will cause the converter valve's false triggering / pulse loss protection function to fail to operate correctly, thus increasing the risk of damage to the converter valve. Summary of the Invention

[0005] Therefore, it is necessary to provide a valve control system control method, device, computer equipment, computer-readable storage medium, and computer program product that can reduce the risk of damage to the aforementioned converter valves, addressing the technical problem of high damage risk to converter valves.

[0006] In a first aspect, this application provides a valve-controlled system control method, including:

[0007] Upon receiving a first trigger signal for the converter valve sent by the DC control system corresponding to the valve control system, the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system are determined, and the operating state of the converter valve is determined based on the first trigger signal and the feedback signal sent by the converter valve.

[0008] When the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system; the second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to activate the pre-configured converter valve false triggering / pulse loss function.

[0009] In one embodiment, determining the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system, and determining the operating state of the converter valve based on the first trigger signal and the feedback signal sent by the converter valve, includes:

[0010] The operating status signal of the valve control system is obtained. If the operating status signal is a duty signal, the operating status of the valve control system is determined to be a duty state. If the unlocking signal of the DC system corresponding to the DC control system is obtained, the operating status of the DC system is determined to be an unlocked state.

[0011] Perform logical operations on the first trigger signal and the report signal sent by the converter valve to obtain the logical operation result between the first trigger signal and the report signal;

[0012] Based on the result of the logical operation, the timing logic relationship between the first trigger signal and the report signal is determined, and based on the timing logic relationship, the operating state of the converter valve is determined.

[0013] In one embodiment, the step of performing logical operations on the first trigger signal and the report signal sent by the converter valve to obtain the logical operation result between the first trigger signal and the report signal includes:

[0014] Perform a logical inversion operation on the first trigger signal to obtain the first trigger signal after the logical inversion operation;

[0015] Perform a logical AND operation on the first trigger signal after the logical inversion operation and the report signal to obtain the signal after the logical AND operation. Use the signal after the logical AND operation as the input of the setting pin of the synchronous trigger configured in the valve control system.

[0016] Obtain the output of the output pin of the synchronous trigger, and based on the output of the output pin, obtain the logical operation result between the first trigger signal and the report signal.

[0017] In one embodiment, determining the timing logic relationship between the first trigger signal and the report signal based on the result of the logic operation, and determining the operating state of the converter valve based on the timing logic relationship, includes:

[0018] When the value corresponding to the result of the logical operation is a first value, the timing logic relationship between the first trigger signal and the report signal is determined to be that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time it receives the first trigger signal.

[0019] If the timing logic relationship between the first trigger signal and the report signal is such that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time it receives the first trigger signal, then the operating state of the converter valve is determined to be normal.

[0020] In one embodiment, after sending a second trigger signal to the converter valve and returning a trigger feedback signal corresponding to the first trigger signal to the DC control system, the method further includes:

[0021] The output of the output pin of the synchronous trigger is delayed to obtain the output after the delay operation;

[0022] If the falling edge of the second trigger signal is detected to be valid, the output after the delay operation and the second trigger signal are logically ORed to obtain the signal after logical ORing.

[0023] The signal after the logical OR processing is used as the input to the reset pin of the synchronous flip-flop.

[0024] In one embodiment, the step of sending a second trigger signal to the converter valve and returning a trigger feedback signal corresponding to the first trigger signal to the DC control system when the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions includes:

[0025] When the valve control system is detected to be in duty mode, the operating state of the valve control system is determined to meet the corresponding first preset condition. When the DC system is detected to be in unlocked mode, the operating state of the DC system is determined to meet the corresponding second preset condition. When the rising edge of the first trigger signal is detected to be valid, the first trigger signal is determined to meet the corresponding third preset condition. When the converter valve is detected to be in normal mode, the operating state of the converter valve is determined to meet the corresponding fourth preset condition.

[0026] When the first preset condition, the second preset condition, the third preset condition, and the fourth preset condition are all met, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system corresponding to the valve control system; the operating state of the DC control system corresponding to the valve control system is the duty state.

[0027] Secondly, this application also provides a valve control system control device, comprising:

[0028] The status determination module is used to determine the operating status of the valve control system and the operating status of the DC system corresponding to the DC control system when a first trigger signal for the converter valve is received from the DC control system corresponding to the valve control system; and to determine the operating status of the converter valve based on the first trigger signal and the feedback signal sent by the converter valve.

[0029] The signal transmitting module is used to send a second trigger signal to the converter valve and return a trigger feedback signal corresponding to the first trigger signal to the DC control system when the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions; the second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to activate the pre-configured converter valve false triggering / pulse loss function.

[0030] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0031] Upon receiving a first trigger signal for the converter valve sent by the DC control system corresponding to the valve control system, the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system are determined, and the operating state of the converter valve is determined based on the first trigger signal and the feedback signal sent by the converter valve.

[0032] When the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system; the second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to activate the pre-configured converter valve false triggering / pulse loss function.

[0033] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0034] Upon receiving a first trigger signal for the converter valve sent by the DC control system corresponding to the valve control system, the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system are determined, and the operating state of the converter valve is determined based on the first trigger signal and the feedback signal sent by the converter valve.

[0035] When the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system; the second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to activate the pre-configured converter valve false triggering / pulse loss function.

[0036] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0037] Upon receiving a first trigger signal for the converter valve sent by the DC control system corresponding to the valve control system, the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system are determined, and the operating state of the converter valve is determined based on the first trigger signal and the feedback signal sent by the converter valve.

[0038] When the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system; the second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to activate the pre-configured converter valve false triggering / pulse loss function.

[0039] The aforementioned valve control system control method, apparatus, computer equipment, storage medium, and computer program product first determine the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system upon receiving a first trigger signal for the converter valve from the DC control system corresponding to the valve control system. Then, based on the first trigger signal and the feedback signal sent by the converter valve, the operating state of the converter valve is determined. Next, if the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system. The second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to activate a pre-configured converter valve false trigger / pulse loss function, protecting the converter valve based on its operating state. In this way, upon receiving the first trigger signal from the DC control system, the system can comprehensively consider the operating status of the valve control system, the DC system, the first trigger signal, and the converter valve, taking into account their respective preset conditions. If all these conditions are met, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system. This avoids the valve control system returning a trigger pulse feedback signal to the DC control system even if it fails to send a trigger pulse signal or fails to do so. This ensures the correct operation of the converter valve's false triggering / pulse loss protection function and reduces the risk of damage to the converter valve. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is an application environment diagram of the valve control system control method in one embodiment;

[0042] Figure 2 This is a flowchart illustrating a valve control system control method in one embodiment;

[0043] Figure 3 This is a flowchart illustrating the steps of determining the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system in one embodiment, and determining the operating state of the converter valve based on the first trigger signal and the feedback signal sent by the converter valve.

[0044] Figure 4 This is a flowchart illustrating the steps of performing logical operations on a first trigger signal and a report signal sent by a converter valve to obtain the result of the logical operation between the first trigger signal and the report signal in one embodiment.

[0045] Figure 5 This is a flowchart illustrating the steps of obtaining the reset pin input of a synchronous trigger in one embodiment;

[0046] Figure 6 This is a flowchart illustrating the valve control system control method in another embodiment;

[0047] Figure 7 This is a circuit logic diagram illustrating how the on-duty valve control system sends a trigger pulse feedback signal to the on-duty DC control system in another embodiment.

[0048] Figure 8 This is a structural block diagram of the valve control system control device in one embodiment;

[0049] Figure 9 This is an internal structural diagram of a computer device 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] 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, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of related data must comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0052] The valve control system control method provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, the application environment includes a DC control system 102, a valve control system 104, and a converter valve 106. The DC control system 102, the valve control system 104, and the converter valve 106 communicate with each other via electrical signals or optical signals.

[0053] In high-voltage direct current transmission control technology, the valve control system 104 serves as an interface device between the DC control system 102 and the converter valve 106. Through signal interaction with the DC control system 102, it realizes the trigger control and operation status monitoring of the converter valve 106. Meanwhile, the DC control system 102 realizes the control and protection of the converter valve 106 through signal interaction with the valve control system 104.

[0054] Under normal circumstances, after the converter valve 106 is charged, the DC control system 102 sends a converter valve trigger signal (Control Pulse, CP signal) to the valve control system 104. In response to the received converter valve trigger signal, the valve control system 104 sends a trigger pulse signal (Firing Control Signal, FCS signal) to the converter valve 106 to achieve trigger control of the converter valve 106. Simultaneously, it returns a trigger pulse feedback signal (Feedback Pulse, FP signal) to the DC control system 102. This allows the DC control system 102 to determine whether the converter valve 106 has been triggered normally based on the timing logic of the converter valve trigger signal and the trigger pulse feedback signal, and to activate the pre-configured converter valve false triggering / pulse loss protection function. This function is used to take timely protective measures for the converter valve 106 when its operating state is abnormal. Therefore, the trigger pulse feedback signal returned by the valve control system 104 directly determines whether the converter valve false triggering / pulse loss protection function can operate correctly, protecting the converter valve 106 from damage.

[0055] However, in practical applications, it has been found that there is no necessary relationship between the action of the valve control system 104 in sending a trigger pulse signal to the converter valve 106 and the action of returning a trigger pulse feedback signal to the DC control system 102. In other words, even if the valve control system 104 fails to send a trigger pulse signal to the converter valve 106 or fails to send a trigger pulse signal to the converter valve 106, the valve control system 104 will still return a trigger pulse feedback signal to the DC control system 102. This will cause the converter valve's false triggering / pulse loss protection function to fail to operate correctly, thus making the risk of damage to the converter valve 106 higher.

[0056] It should be noted that the valve control system method provided in this application can be applied to, for example... Figure 1The valve control system 104 shown can also be applied to a server or terminal that controls the valve control system 104, preferably to the valve control system 104 itself.

[0057] In one exemplary embodiment, such as Figure 2 As shown, a valve-controlled system control method is provided, which is applied to... Figure 1 Taking the valve control system in the example, the following steps are included:

[0058] Step S202: Upon receiving a first trigger signal for the converter valve sent by the DC control system corresponding to the valve control system, determine the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system, and determine the operating state of the converter valve based on the first trigger signal and the feedback signal sent by the converter valve.

[0059] The first trigger signal is the converter valve trigger signal, hereinafter referred to as the CP signal.

[0060] The feedback signal refers to the indication pulse signal (IP signal) sent by the thyristor of the converter valve, hereinafter referred to as the IP signal. When the thyristor of the converter valve receives a positive voltage, it will send an IP signal to the valve control system.

[0061] Furthermore, since the converter valve has dozens of thyristors, each of which may send IP signals, the valve control system can perform a logical OR operation on multiple IP signals after receiving them.

[0062] The operating status of the valve control system is used to characterize whether the valve control system is in a duty state or a standby state.

[0063] Among them, the valve control system has a corresponding DC control system. In the high-voltage direct current transmission control system, there are multiple valve control systems, and a DC control system that corresponds one-to-one with each valve control system. It is understandable that the corresponding valve control system and the DC control system have the same operating status (on duty or standby).

[0064] The operating status of the DC system is used to characterize whether the DC system is in an unlocked state; the DC system can only participate in the operation of the entire high-voltage DC transmission control system when it is in an unlocked state.

[0065] Specifically, after the converter valve is charged, the DC control system sends a CP signal to the valve control system. After receiving the CP signal, the valve control system collects information from the valve control system and the DC system corresponding to the DC control system. Based on the information from the valve control system, it determines the operating status of the valve control system, based on the information from the DC system, it determines the operating status of the DC system, and based on the CP signal and the IP signal sent by the converter valve, it determines the operating status of the converter valve.

[0066] Step S204: When the operating status of the valve control system, the operating status of the DC system, the first trigger signal, and the operating status of the converter valve all meet their respective preset conditions, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system.

[0067] The second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to start the pre-configured converter valve false trigger / pulse loss function to protect the converter valve according to its operating status.

[0068] The second trigger signal is the trigger pulse signal, hereinafter referred to as the FCS signal. Preferably, the duration of the FCS signal is 3ms.

[0069] Among them, the trigger feedback signal is the trigger pulse feedback signal, hereinafter referred to as the FP signal.

[0070] Specifically, the valve control system determines whether the operating status of the valve control system, the DC system, the first trigger signal, and the converter valve meet their respective preset conditions. If all the preset conditions are met, the system sends an FCS signal to the thyristor of the converter valve to trigger the converter valve, and returns an FP signal corresponding to the CP signal to the DC control system so that the DC control system can activate the pre-configured converter valve false triggering / pulse loss function and protect the converter valve according to its operating status.

[0071] In the above-mentioned valve control system control method, the valve control system first determines the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system upon receiving a first trigger signal for the converter valve from the DC control system corresponding to the valve control system. Then, based on the first trigger signal and the feedback signal sent by the converter valve, the valve control system determines the operating state of the converter valve. Next, if the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, the valve control system sends a second trigger signal to the converter valve and returns a trigger feedback signal corresponding to the first trigger signal to the DC control system. The second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to activate the pre-configured converter valve false trigger / pulse loss function, protecting the converter valve based on its operating state. In this way, upon receiving the first trigger signal from the DC control system, the valve control system can comprehensively consider the operating status of the valve control system, the DC system, the first trigger signal, and the converter valve, taking into account the operating status of each device. If the operating status of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, the valve control system sends a second trigger signal to the converter valve and returns a trigger feedback signal corresponding to the first trigger signal to the DC control system. This avoids the valve control system returning a trigger pulse feedback signal to the DC control system even if it fails to send a trigger pulse signal or fails to do so. This ensures the correct operation of the converter valve's false triggering / pulse loss protection function and reduces the risk of damage to the converter valve.

[0072] like Figure 3 As shown, in an exemplary embodiment, step S202 above, determining the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system, and determining the operating state of the converter valve based on the first trigger signal and the feedback signal sent by the converter valve, specifically includes the following steps:

[0073] Step S302: Obtain the operating status signal of the valve control system. If the operating status signal is a duty signal, determine that the operating status of the valve control system is a duty state. If the unlocking signal of the DC system corresponding to the DC control system is obtained, determine that the operating status of the DC system is an unlocked state.

[0074] Step S304: Perform logical operations on the first trigger signal and the report signal sent by the converter valve to obtain the logical operation result between the first trigger signal and the report signal.

[0075] Step S306: Based on the logical operation result, determine the timing logic relationship between the first trigger signal and the report signal, and determine the operating state of the converter valve based on the timing logic relationship.

[0076] The logical operations include at least one of the logical OR operation, logical AND operation, etc.; logical operations can be implemented by triggers, such as synchronous triggers.

[0077] The timing logic relationship between the first trigger signal and the report signal includes a timing relationship and a logical relationship. The timing relationship refers to the time relationship between the valve control system receiving the first trigger signal and the report signal, while the logical relationship refers to whether the first trigger signal and the report signal are valid.

[0078] Specifically, the valve control system first acquires the operating status signal of the valve control system. When the operating status signal "ACTIVE" is "1", the operating status signal of the valve control system is determined to be the duty signal. When the operating status signal "ACTIVE" is "0", the operating status signal of the valve control system is determined to be the standby signal. Then, when the operating status signal of the valve control system is the duty signal, the server determines that the operating status of the valve control system is the duty state. At the same time, when the valve control system acquires the unlock signal of the DC system corresponding to the DC control system, it determines that the operating status of the DC system is the unlock state. Therefore, it can be further determined that the CP signal sent by the DC control system is sent when the DC system is unlocked. Therefore, the CP signal sent by the DC control system needs to be responded to normally. If the unlock signal of the DC system cannot be acquired, but the CP signal is received, it means that the CP signal was sent under abnormal conditions, so no response is required. Next, the valve control system performs logical operations on the CP and IP signals through a synchronous trigger to obtain the logical operation results between the CP and IP signals. Then, based on the logical operation results between the CP and IP signals, the valve control system determines the timing and logical relationships between the CP and IP signals, and obtains the operating status of the converter valve, such as whether the converter valve is in normal operating condition.

[0079] It is understandable that the valve control system and the DC control system in standby mode cannot trigger or control the converter valve.

[0080] In this embodiment, the valve control system can determine whether it is in duty mode through its operating status signal, and whether it is in unlocked mode through the DC system's unlock signal. Furthermore, by logically manipulating the CP and IP signals, the operating status of the converter valve can be determined. Therefore, during the subsequent FP return process, the valve control system, DC system, and converter valve are fully considered. Only when all three are functioning normally is the FP signal returned. This avoids the valve control system returning a trigger pulse feedback signal to the DC control system even if it fails to send a trigger pulse signal to the converter valve, thus ensuring the correct operation of the converter valve's false triggering / pulse loss protection function and reducing the risk of damage to the converter valve.

[0081] like Figure 4 As shown, in an exemplary embodiment, step S304 above, which involves performing logical operations on the first trigger signal and the report signal sent by the converter valve to obtain the logical operation result between the first trigger signal and the report signal, specifically includes the following steps:

[0082] Step S402: Perform a logical inversion operation on the first trigger signal to obtain the first trigger signal after the logical inversion operation.

[0083] Step S404: Perform a logical AND operation on the first trigger signal and the report signal after the logical inversion operation to obtain the signal after the logical AND operation. Use the signal after the logical AND operation as the input of the setting pin of the synchronous trigger configured in the valve control system.

[0084] Step S406: Obtain the output of the output pin of the synchronous trigger, and obtain the logical operation result between the first trigger signal and the report signal based on the output of the output pin.

[0085] Among them, the synchronous trigger is an RS trigger, that is, a synchronous trigger with reset priority.

[0086] Specifically, the server first inverts the CP signal, then performs an AND operation between the inverted CP signal and the IP signal, and uses this as the input to the setting pin (S pin) of the synchronous trigger. Then, through the processing of the input by the synchronous trigger, the output pin (Q pin) of the synchronous trigger is obtained, and the logical operation result between the CP signal and the IP signal is obtained based on the output of the output pin.

[0087] In this embodiment, the valve control system implements logical operations between the CP signal and the IP signal through logical inversion, logical AND operation, and synchronous trigger, thereby obtaining the logical operation results between the CP signal and the IP signal, and thus determining the timing logic relationship between the CP signal and the IP signal.

[0088] In an exemplary embodiment, step S306 above, which determines the timing logic relationship between the first trigger signal and the report signal based on the logic operation result, and determines the operating state of the converter valve based on the timing logic relationship, specifically includes the following: when the value corresponding to the logic operation result is a first value, the timing logic relationship between the first trigger signal and the report signal is determined to be that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time when it receives the first trigger signal; when the timing logic relationship between the first trigger signal and the report signal is that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time when it receives the first trigger signal, the operating state of the converter valve is determined to be a normal state.

[0089] The first value is "1".

[0090] Specifically, when the value corresponding to the logical operation result of the valve control system is 1, that is, when the output value of the output pin (Q pin) of the synchronous trigger is 1, it indicates that the CP signal is valid (1) and the IP signal is valid (1). The valve control system receives the IP signal at the same time as it receives the CP signal, and under this condition, the operating state of the converter valve is determined to be normal.

[0091] In this embodiment, the converter valve can quickly and easily determine the timing logic relationship between the CP signal and IP signal received by the valve control system by checking whether the value corresponding to the result of the logic operation is 1.

[0092] like Figure 5 As shown, in an exemplary embodiment, after step S204 above, which involves sending a second trigger signal to the converter valve and returning a trigger feedback signal corresponding to the first trigger signal to the DC control system, the following steps are further included:

[0093] Step S502: Delay the output of the output pin of the synchronous trigger to obtain the output after the delay operation.

[0094] Step S504: If the falling edge of the second trigger signal is detected to be valid, perform a logical OR operation on the output after the delay operation and the second trigger signal to obtain the signal after logical OR operation.

[0095] Step S506: The signal after logical OR processing is used as the input to the reset pin of the synchronous flip-flop.

[0096] Specifically, the valve control system performs a 30μs delay operation on the output pin of the synchronous trigger to obtain the delayed output. Then, when the falling edge of the 3ms FCS signal is detected to be valid, the valve control system performs a logical OR operation on the delayed output and the FCS signal through a logic OR gate to obtain the logically ORed signal. Next, the valve control system uses the logically ORed signal as the input to the reset pin of the synchronous trigger, that is, as the reset condition of the reset pin of the synchronous trigger.

[0097] In this embodiment, the valve control system resets the reset pin of the output pin according to the output pin of the synchronous trigger and the sent FCS signal, so that the synchronous trigger performs logical operations on the IP signal and CP signal based on the latest received IP signal each time, without being interfered with by the previously received IP signal.

[0098] In an exemplary embodiment, step S204, where the operating states of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, involves sending a second trigger signal to the converter valve and returning a trigger feedback signal corresponding to the first trigger signal to the DC control system. Specifically, this includes: determining that the valve control system's operating state meets the corresponding first preset condition when the valve control system is detected to be in a duty state; determining that the DC system's operating state meets the corresponding second preset condition when the DC system is detected to be in an unlocked state; determining that the first trigger signal meets the corresponding third preset condition when the rising edge of the first trigger signal is detected to be valid; and determining that the converter valve's operating state meets the corresponding fourth preset condition when the converter valve is detected to be in a normal state. Finally, when all four preset conditions are met, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system corresponding to the valve control system.

[0099] Among them, the DC control system corresponding to the valve control system is in the duty state.

[0100] Specifically, when the valve control system detects that its operating state is in the duty state (operating state signal "ACTIVE" is "1"), it determines that the operating state of the valve control system meets the corresponding first preset condition. When the DC system detects that its operating state is in the unlocked state ("DEBLOCK" is "1"), it determines that the operating state of the DC system meets the corresponding second preset condition. When the rising edge of the CP signal is detected to be valid, it determines that the CP signal meets the corresponding third preset condition. When the converter valve is detected to be in the normal state (the output value of the output pin Q of the synchronous trigger is valid, which is 1), it determines that the operating state of the converter valve meets the corresponding fourth preset condition. Then, when the first, second, third, and fourth preset conditions are all met simultaneously, the valve control system sends an FCS signal to the thyristor of the converter valve and returns an FP signal corresponding to the CP signal to the DC control system that is in the duty state corresponding to the valve control system.

[0101] In this embodiment, the valve control system can comprehensively consider the operating status of the valve control system, the DC system, the first trigger signal, and the converter valve based on the operating status of the valve control system, the DC system, the DC control system, and the converter valve. When the operating status of the valve control system, the DC system, the first trigger signal, and the converter valve all meet their respective preset conditions, the valve control system sends a second trigger signal to the converter valve and returns a trigger feedback signal corresponding to the first trigger signal to the DC control system. This avoids the valve control system returning a trigger pulse feedback signal to the DC control system even if it fails to send a trigger pulse signal to the converter valve or fails to send a trigger pulse signal to the converter valve. This ensures the correct operation of the converter valve's false triggering / pulse loss protection function and reduces the risk of damage to the converter valve.

[0102] In an exemplary embodiment, the valve control system control method provided in this application further includes: when the operating state of the valve control system is detected to be a standby state, returning a trigger feedback signal corresponding to the first trigger signal to the DC control system corresponding to the valve control system.

[0103] Among them, the DC control system corresponding to the valve control system is in standby mode. The trigger feedback signal is used to enable the DC control system corresponding to the valve control system to switch from the operating mode to the duty mode, and to protect the converter valve according to the operating status of the converter valve through the configured converter valve false trigger / pulse loss function.

[0104] Specifically, when the valve control system detects that its operating state is in standby mode (the operating state signal "ACTIVE" is "0"), it determines that the operating state of the valve control system does not meet the corresponding first preset condition and returns the FP signal corresponding to the CP signal to the DC control system corresponding to the valve control system that is in standby mode. If the valve control system in duty mode or the DC control system corresponding to the valve control system in duty mode malfunctions, then the DC control system corresponding to the valve control system in standby mode, upon receiving the FP signal, will protect the converter valve according to its operating state by using the configured converter valve false triggering / pulse loss function based on the FP signal.

[0105] In one exemplary embodiment, such as Figure 6 As shown, another control method for a valve control system is provided. Taking the application of this method to a valve control system as an example, the method includes the following steps:

[0106] Step S601: Receive the first trigger signal for the converter valve sent by the DC control system corresponding to the valve control system.

[0107] Step S602: Obtain the operating status signal of the valve control system. If the operating status signal is a duty signal, determine that the operating status of the valve control system is a duty status. If the operating status of the valve control system is detected to be a duty status, determine that the operating status of the valve control system meets the corresponding first preset condition.

[0108] Step S603: When an unlock signal of the DC system corresponding to the DC control system is obtained, the operating state of the DC system is determined to be unlocked. When the operating state of the DC system is detected to be unlocked, the operating state of the DC system is determined to meet the corresponding second preset condition.

[0109] Step S604: If the rising edge of the first trigger signal is detected to be valid, determine that the first trigger signal meets the corresponding third preset condition.

[0110] Step S605: Perform a logical inversion operation on the first trigger signal to obtain the first trigger signal after the logical inversion operation. Perform a logical AND operation on the first trigger signal after the logical inversion operation and the report signal to obtain the signal after the logical AND operation. Use the signal after the logical AND operation as the input of the setting pin of the synchronous trigger configured in the valve control system.

[0111] Step S606: Obtain the output of the output pin of the synchronous trigger. Based on the output of the output pin, obtain the logical operation result between the first trigger signal and the report signal. If the value corresponding to the logical operation result is the first value, determine the timing logic relationship between the first trigger signal and the report signal as follows: the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than it receives the first trigger signal.

[0112] Step S607: If the timing logic relationship between the first trigger signal and the report signal is that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time it receives the first trigger signal, then the operating state of the converter valve is determined to be normal.

[0113] Step S608: If the operating status of the converter valve is detected to be normal, determine that the operating status of the converter valve meets the corresponding fourth preset condition.

[0114] In step S609, if the first preset condition, the second preset condition, the third preset condition, and the fourth preset condition are all met, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system corresponding to the valve control system.

[0115] In this embodiment, upon receiving a first trigger signal from the DC control system, the valve control system comprehensively considers the operating status of the valve control system, the DC system, the first trigger signal, and the converter valve, taking into account the operating status of each device. When all three operating conditions meet their respective preset conditions, the valve control system sends a second trigger signal to the converter valve and returns a trigger feedback signal corresponding to the first trigger signal to the DC control system. This prevents the valve control system from returning a trigger pulse feedback signal to the DC control system even if it fails to send a trigger pulse signal or fails to do so. This ensures the correct operation of the converter valve's false triggering / pulse loss protection function and reduces the risk of damage to the converter valve.

[0116] To more clearly illustrate the valve control system control method provided in the embodiments of this application, a specific embodiment is given below for detailed description. However, it should be understood that the embodiments of this application are not limited thereto. In an exemplary embodiment, this application also provides a method for generating key signals for a high-voltage DC valve control system, specifically including the following steps:

[0117] S701: Collects the operating status signals of the valve control system, which are divided into duty signals (ACTIVE is "1") and standby signals (ACTIVE is "0").

[0118] S702, Acquires the unlock signal (DEBLOCK) of the DC system.

[0119] S703: Acquires the converter valve trigger signal (CP signal) sent from the DC control system to the valve control system.

[0120] S704: Collect the feedback signal (IP signal) sent by the thyristor of the converter valve to the valve control system.

[0121] S705. Perform logical processing on the acquired converter valve trigger signal (CP signal) and report signal (IP signal), including: ① performing an AND operation between the inverted converter valve trigger signal (CP signal) and the report signal (IP signal) as the input to the set pin "S" of the RS flip-flop (Reset-Set trigger); ② delaying the output pin "Q" of the RS flip-flop for 30ms and using it as one of the input conditions for the reset pin "R" of the RS flip-flop.

[0122] S706. When the valve control system duty signal (ACTIVE) is detected to be valid, condition one is determined to be met.

[0123] S707. When the DC system unlock signal (DEBLOCK) is detected to be valid, condition two is determined to be satisfied.

[0124] S708. When the rising edge of the converter valve trigger signal (CP signal) is detected to be valid, condition three is determined to be met.

[0125] S709. When the output pin "Q" of the RS flip-flop is valid, condition four is satisfied.

[0126] S710. When conditions one, two, three, and four are met simultaneously, the on-duty valve control system sends a trigger pulse signal (FCS signal) to the thyristor on the converter valve. At the same time, the on-duty valve control system sends a trigger pulse feedback signal (FP signal) to the on-duty DC control system, indicating that it has sent the trigger pulse signal (FCS signal) to the thyristor.

[0127] S711. When the falling edge of the FCS signal is detected to be valid, reset the output value of the RS flip-flop.

[0128] S712. When condition one is not met, the backup valve control system will not send a trigger pulse signal (FCS signal) to the thyristor, but the backup valve control system should still send a trigger pulse feedback signal (FP signal) to the backup DC control system.

[0129] like Figure 7 The diagram shown is a circuit logic diagram of the valve control system on duty sending a trigger pulse feedback signal (FP signal) to the DC control system on duty, as provided in this embodiment.

[0130] In this embodiment, the operating status signal (ACTIVE) of the valve control system, the unlocking signal (DEBLOCK) of the DC system, the converter valve trigger signal (CP signal), and the feedback signal (IP signal) are used as the conditions for generating the trigger pulse feedback signal (FP signal) fed back from the valve control system to the DC control system. Based on the judgment result, it is determined whether to generate the trigger pulse feedback signal (FP signal). This ensures that the trigger pulse feedback signal (FP signal) fed back from the valve control system to the DC control system can accurately reflect the triggering status of the converter valve. This ensures that the DC control system's converter valve false triggering / pulse loss protection function can operate correctly, thereby effectively protecting the converter valve and preventing damage to the converter valve under abnormal operating conditions.

[0131] It should be understood that although the steps in the flowcharts of the above embodiments 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 above embodiments 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.

[0132] Based on the same inventive concept, this application also provides a valve control system control device for implementing the valve control system control 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 valve control system control device embodiments provided below can be found in the limitations of the valve control system control method described above, and will not be repeated here.

[0133] In one exemplary embodiment, such as Figure 8 As shown, a valve control system control device is provided, including: a status determination module 802 and a signal transmission module 804, wherein:

[0134] The status determination module 802 is used to determine the operating status of the valve control system and the operating status of the DC system corresponding to the DC control system when it receives a first trigger signal for the converter valve sent by the DC control system corresponding to the valve control system, and to determine the operating status of the converter valve based on the first trigger signal and the feedback signal sent by the converter valve.

[0135] The signal sending module 804 is used to send a second trigger signal to the converter valve and return a trigger feedback signal corresponding to the first trigger signal to the DC control system when the operating status of the valve control system, the operating status of the DC system, the first trigger signal and the operating status of the converter valve all meet their respective preset conditions. The second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to start the pre-configured converter valve false triggering / pulse loss function.

[0136] In an exemplary embodiment, the state determination module 802 is further configured to acquire the operating state signal of the valve control system; determine the operating state of the valve control system as a duty state when the operating state signal is a duty signal; determine the operating state of the DC system as an unlocked state when an unlock signal of the DC system corresponding to the DC control system is acquired; perform logical operations on the first trigger signal and the report signal sent by the converter valve to obtain the logical operation result between the first trigger signal and the report signal; determine the timing logic relationship between the first trigger signal and the report signal based on the logical operation result; and determine the operating state of the converter valve based on the timing logic relationship.

[0137] In an exemplary embodiment, the state determination module 802 is further configured to perform a logical inversion operation on the first trigger signal to obtain a logically inverted first trigger signal; perform a logical AND operation on the logically inverted first trigger signal and the report signal to obtain a logically ANDed signal; use the logically ANDed signal as the input of the setting pin of the synchronous trigger configured in the valve control system; obtain the output of the output pin of the synchronous trigger; and obtain the logical operation result between the first trigger signal and the report signal based on the output of the output pin.

[0138] In an exemplary embodiment, the state determination module 802 is further configured to, when the value corresponding to the logical operation result is a first value, determine that the timing logic relationship between the first trigger signal and the report signal is that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time when it receives the first trigger signal; and determine that the operating state of the converter valve is normal when the timing logic relationship between the first trigger signal and the report signal is that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time when it receives the first trigger signal.

[0139] In an exemplary embodiment, the state determination module 802 is further configured to perform a delay operation on the output of the output pin of the synchronous flip-flop to obtain the output after the delay operation; when the falling edge of the second trigger signal is detected to be valid, perform a logical OR operation on the output after the delay operation and the second trigger signal to obtain the signal after the logical OR operation; and use the signal after the logical OR operation as the input of the reset pin of the synchronous flip-flop.

[0140] In an exemplary embodiment, the signal transmitting module 804 is further configured to: determine that the operating state of the valve control system meets a corresponding first preset condition when the valve control system is detected to be in a duty state; determine that the operating state of the DC system meets a corresponding second preset condition when the DC system is detected to be in an unlocked state; determine that the first trigger signal meets a corresponding third preset condition when the rising edge of the first trigger signal is detected to be valid; and determine that the operating state of the converter valve meets a corresponding fourth preset condition when the converter valve is detected to be in a normal state. If all three preset conditions are met, the module sends a second trigger signal to the converter valve and returns a trigger feedback signal corresponding to the first trigger signal to the DC control system corresponding to the valve control system. The DC control system corresponding to the valve control system is in a duty state.

[0141] Each module in the aforementioned valve control system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the computer device's memory as software, so that the processor can call and execute the corresponding operations of each module.

[0142] In one exemplary embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 9 As shown, this computer device 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 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 to run. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network connection. When the computer program is executed by the processor, it implements a valve control system control method.

[0143] In one exemplary embodiment, a computer device is also 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-described method embodiments.

[0144] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0145] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0146] 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.

[0147] 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.

[0148] 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 control method for a valve-controlled system, characterized in that, The method includes: Upon receiving a first trigger signal for the converter valve sent by the DC control system corresponding to the valve control system, the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system are determined, and the operating state of the converter valve is determined based on the first trigger signal and the feedback signal sent by the converter valve. When the valve control system is detected to be in duty mode, the operating state of the valve control system is determined to meet the corresponding first preset condition. When the DC system is detected to be in unlocked mode, the operating state of the DC system is determined to meet the corresponding second preset condition. When the rising edge of the first trigger signal is detected to be valid, the first trigger signal is determined to meet the corresponding third preset condition. When the converter valve is detected to be in normal mode, the operating state of the converter valve is determined to meet the corresponding fourth preset condition. When the first preset condition, the second preset condition, the third preset condition, and the fourth preset condition are all met, a second trigger signal is sent to the converter valve, and a trigger feedback signal corresponding to the first trigger signal is returned to the DC control system corresponding to the valve control system; the DC control system corresponding to the valve control system is in the duty state; the second trigger signal is used to trigger the converter valve, and the trigger feedback signal is used to instruct the DC control system to activate the pre-configured converter valve false triggering and / or pulse loss protection function.

2. The method according to claim 1, characterized in that, Determining the operating state of the valve control system and the operating state of the DC system corresponding to the DC control system, and determining the operating state of the converter valve based on the first trigger signal and the report signal sent by the converter valve, includes: The operating status signal of the valve control system is obtained. If the operating status signal is a duty signal, the operating status of the valve control system is determined to be a duty state. If the unlocking signal of the DC system corresponding to the DC control system is obtained, the operating status of the DC system is determined to be an unlocked state. Perform logical operations on the first trigger signal and the report signal sent by the converter valve to obtain the logical operation result between the first trigger signal and the report signal; Based on the result of the logical operation, the timing logic relationship between the first trigger signal and the report signal is determined, and based on the timing logic relationship, the operating state of the converter valve is determined.

3. The method according to claim 2, characterized in that, The step of performing logical operations on the first trigger signal and the report signal sent by the converter valve to obtain the logical operation result between the first trigger signal and the report signal includes: Perform a logical inversion operation on the first trigger signal to obtain the first trigger signal after the logical inversion operation; Perform a logical AND operation on the first trigger signal after the logical inversion operation and the report signal to obtain the signal after the logical AND operation. Use the signal after the logical AND operation as the input of the setting pin of the synchronous trigger configured in the valve control system. Obtain the output of the output pin of the synchronous trigger, and based on the output of the output pin, obtain the logical operation result between the first trigger signal and the report signal.

4. The method according to claim 3, characterized in that, The step of determining the timing logic relationship between the first trigger signal and the report signal based on the result of the logic operation, and determining the operating state of the converter valve based on the timing logic relationship, includes: When the value corresponding to the result of the logical operation is a first value, the timing logic relationship between the first trigger signal and the report signal is determined to be that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time it receives the first trigger signal. If the timing logic relationship between the first trigger signal and the report signal is such that the first trigger signal is valid, the report signal is valid, and the valve control system receives the report signal earlier than the time it receives the first trigger signal, then the operating state of the converter valve is determined to be normal.

5. The method according to claim 3, characterized in that, After sending a second trigger signal to the converter valve and returning a trigger feedback signal corresponding to the first trigger signal to the DC control system corresponding to the valve control system, the method further includes: The output of the output pin of the synchronous trigger is delayed to obtain the output after the delay operation; If the falling edge of the second trigger signal is detected to be valid, the output after the delay operation and the second trigger signal are logically ORed to obtain the signal after logical ORing. The signal after the logical OR processing is used as the input to the reset pin of the synchronous flip-flop.

6. A valve control system control device, characterized in that, The device includes: The status determination module is used to determine the operating status of the valve control system and the operating status of the DC system corresponding to the DC control system when a first trigger signal for the converter valve is received from the DC control system corresponding to the valve control system; and to determine the operating status of the converter valve based on the first trigger signal and the feedback signal sent by the converter valve. The signal transmitting module is configured to: determine if the valve control system meets a first preset condition when its operating state is detected as being in a duty state; determine if the DC system meets a second preset condition when its operating state is detected as being in an unlocked state; determine if the first trigger signal meets a third preset condition when its rising edge is detected as being valid; and determine if the converter valve meets a fourth preset condition when its operating state is detected as being in a normal state. If all three preset conditions are met, the module sends a second trigger signal to the converter valve and returns a trigger feedback signal corresponding to the first trigger signal to the DC control system corresponding to the valve control system. The DC control system corresponding to the valve control system is in a duty state. The second trigger signal triggers the converter valve, and the trigger feedback signal instructs the DC control system to activate a pre-configured converter valve false triggering and / or pulse loss protection function.

7. The apparatus according to claim 6, characterized in that, The state determination module is further configured to acquire the operating state signal of the valve control system, determine the operating state of the valve control system as a duty state when the operating state signal is a duty signal, and determine the operating state of the DC system as an unlocked state when an unlock signal of the DC system corresponding to the DC control system is acquired; and perform logical operations on the first trigger signal and the report signal sent by the converter valve to obtain the logical operation result between the first trigger signal and the report signal. Based on the result of the logical operation, the timing logic relationship between the first trigger signal and the report signal is determined, and based on the timing logic relationship, the operating state of the converter valve is determined.

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

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

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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