Valve control device power supply and protection action threshold configuration method and system thereof

Abstract

The invention belongs to the field of direct-current transmission converter valve control protection, and particularly relates to a valve control device power supply and a protection action threshold configuration method and system thereof. Under the conditions that a power supply of the valve control device is a cross redundant power supply and a protection action threshold value is an overcurrent protection action threshold value, the method comprises the following steps: monitoring real-time power supply states in a power supply subsystem A and a power supply subsystem B in the power supply of the valve control device; selecting an association relationship corresponding to the real-time power supply state from pre-stored association relationships between the working environment information and a protection action threshold value in different power supply states, and configuring the protection action threshold value according to the selected association relationship in combination with the current working environment information; the power supply states comprise that power supplies in the A power supply subsystem and the B power supply subsystem work normally, only the power supply in the A power supply subsystem is abnormal, and only the power supply in the B power supply subsystem is abnormal.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of control and protection of direct current transmission converter valve, and particularly relates to a valve control device power supply and a protection action threshold configuration method and system thereof. BACKGROUND

[0002] The valve control device of the converter valve is a key service unit of the converter valve equipment, and undertakes the tasks of triggering, monitoring and protecting the converter valve, and the performance thereof directly affects the reliability and safety of the converter valve. In order to improve the fault tolerance of the valve control device, the existing valve control device of the converter valve considers a redundant design architecture to realize seamless switching of the master and slave valve control devices in a fault state, and to avoid system shutdown caused by single point failure.

[0003] In the hardware implementation of the valve control device, the power supply design of the board card is the basis for ensuring the stable work of each functional board card. Therefore, the redundant design concept of the valve control device is extended to the power supply level of the valve control board card, and the power supply cross-redundancy design of the in-board A and B power supply systems is adopted to ensure that the board card can still obtain reliable power supply from the standby system power supply when the active system power supply in the A and B power supply systems fails. This cross-redundancy mechanism significantly improves the high reliability requirement of the valve control on the power supply design.

[0004] On the basis of the valve control cross-redundancy power supply design, in order to further enhance the reliability of the power supply system, an electronic fuse (eFuse) is introduced into the power supply input end to suppress the impact of abnormal working conditions such as overvoltage, undervoltage and overcurrent on the valve control device. The protection action threshold of the eFuse in the existing cross-redundancy power supply loop adopts a preset value, and when the active system power supply abnormally fails, the master / standby power supply switching will cause the current flowing through the standby power supply to suddenly increase, which may cause the eFuse of the standby power supply to act instantaneously, that is, the master / standby power supply switching is prone to misoperation. In order to solve this problem, the protection action threshold is adjusted to be high when the power supply is designed to be compatible with the working condition of the master / standby power supply switching. However, adjusting the protection action threshold to be high greatly reduces the sensitivity of the eFuse to abnormal working conditions such as overcurrent, and sacrifices the reliability of the cross-redundancy power supply. SUMMARY

[0005] The application aims to provide a valve control device power supply and a protection action threshold configuration method and system thereof, which can solve the problem in the prior art that the configuration of the protection action threshold of the valve control device power supply cannot take into account the reliability of the power supply and avoid misoperation.

[0006] In order to achieve the above-mentioned purpose, the application provides a protection action threshold configuration method of a valve control device power supply, wherein the valve control device power supply is a cross-redundancy power supply, and the protection action threshold is an overcurrent protection action threshold, and the method comprises the following steps: The method comprises: monitoring the real-time power supply state of the A-supply electronic system and the B-supply electronic system in the power supply of the valve control device; selecting the corresponding association relationship between the working environment information and the protection action threshold value in the pre-stored association relationship between the working environment information and the protection action threshold value under different power supply states from the real-time power supply state; and configuring the protection action threshold value according to the selected association relationship and in combination with the current working environment information. The power supply state comprises that the power supply in the A-supply electronic system and the B-supply electronic system is normal, that only the power supply in the A-supply electronic system is abnormal, and that only the power supply in the B-supply electronic system is abnormal.

[0007] Further, the current working environment information comprises temperature information and humidity information in the current working environment. The determination manner of the association relationship between the working environment information and the protection action threshold value under different power supply states comprises: For each power supply state, the temperature and the humidity are divided into two or more intervals under the state, the valve control device is placed in different temperature and humidity intervals, the overcurrent protection action threshold value corresponding to different temperature and humidity intervals under the state is obtained by adjusting the power supply current, and the association relationship between the working environment information and the protection action threshold value under different power supply states is determined.

[0008] Further, when the protection action threshold value is the overvoltage or undervoltage protection action threshold value, the method comprises: The method comprises: monitoring the real-time power supply state of the A-supply electronic system and the B-supply electronic system in the power supply of the valve control device; and configuring the protection action threshold value according to the pre-stored association relationship between the working environment information and the protection action threshold value in combination with the current working environment information.

[0009] Further, the current working environment information comprises temperature information and humidity information in the current working environment. The determination manner of the association relationship between the working environment information and the protection action threshold value comprises: The temperature and the humidity are divided into two or more intervals, the valve control device is placed in different temperature and humidity intervals, the undervoltage value or overvoltage value of the valve control device in different temperature and humidity intervals is obtained by adjusting the power supply voltage, and the undervoltage or overvoltage protection action threshold value corresponding to different temperature and humidity intervals is obtained by reserving a working margin in a certain proportion of the obtained undervoltage value or overvoltage value, so as to determine the association relationship between the working environment information and the protection action threshold value.

[0010] The present invention provides a novel technical solution for configuring the protection action threshold of a valve control device power supply. Its beneficial effects include: adaptively adjusting the overcurrent protection action threshold of the electronic fuse connected to the valve control device power supply based on operating environment information and power supply status. This enables the dynamic adjustment of the action threshold to a larger current protection value when the active system power supply fails, causing a sudden increase in the backup system current. This avoids the problem of setting a protection action threshold with a high margin to accommodate main / backup power supply switching, thus reducing sensitivity to overcurrent anomalies. Furthermore, when the valve control system faces extreme operating environments, it can also adaptively adjust the overcurrent protection action threshold of the electronic fuse connected to the valve control device power supply, preventing risks such as overcurrent short circuits, overheating damage, or malfunctions due to mismatch between the overcurrent protection action threshold and the current operating environment.

[0011] The present invention also provides a protection action threshold configuration system for a valve control device power supply, wherein the valve control device power supply is a cross-redundant power supply, including a configuration module and a storage module for storing protection action thresholds in an electronic fuse; The configuration module is used to acquire the real-time power supply status of the A power supply system and the B power supply system in the monitored valve control device power supply when the protection action threshold is the overcurrent protection action threshold; it is also used to select the correlation relationship corresponding to the real-time power supply status from the pre-stored correlation relationship between the working environment information and the protection action threshold under different power supply statuses, and determine the corresponding protection action threshold based on the selected correlation relationship and the current working environment information, and send it to the storage module to configure the protection action threshold. The power supply status includes the following: both power supply systems A and B are operating normally; only power supply system A is malfunctioning; and only power supply system B is malfunctioning.

[0012] Furthermore, the current working environment information includes temperature and humidity information in the current working environment; The methods for determining the correlation between operating environment information and protection action thresholds under different power supply conditions include: For each power supply state, the temperature and humidity are divided into two or more intervals. The valve control device is placed in each of the divided temperature and humidity intervals. By adjusting the power supply current, the overcurrent protection action threshold corresponding to different temperature and humidity intervals under this state is obtained, so as to determine the correlation between the working environment information and the protection action threshold under different power supply states.

[0013] Furthermore, the configuration module is also used to acquire the real-time power supply status of the A and B power supply systems in the monitored valve control device power supply when the protection action threshold is the overvoltage or undervoltage protection action threshold; based on the pre-stored correlation between the working environment information and the protection action threshold, combined with the current working environment information, to determine the corresponding protection action threshold and send it to the storage module for configuring the protection action threshold.

[0014] Furthermore, the current working environment information includes temperature and humidity information in the current working environment; The methods for determining the correlation between working environment information and protection action thresholds include: The temperature and humidity are divided into two or more intervals. The valve control device is placed in the different temperature and humidity intervals. The undervoltage or overvoltage value of the valve control device in different temperature and humidity intervals is obtained by adjusting the power supply voltage. By reserving a set proportion of working margin for the obtained undervoltage or overvoltage value, the undervoltage or overvoltage protection action threshold corresponding to different temperature and humidity intervals is obtained, so as to determine the correlation between working environment information and protection action threshold.

[0015] Furthermore, it also includes an IIC slave interface at the electronic fuse and an IIC master interface at the configuration module, used for data transmission from the configuration module to the electronic fuse by sending the determined protection action threshold; and also used to determine whether the electronic fuse has successfully received the protection action threshold by using the standard IIC communication protocol during the data transmission process from the configuration module to the electronic fuse. The configuration module is also used to repeatedly send the action threshold when the electronic fuse fails to receive it, until the electronic fuse successfully receives the protection action threshold; if the electronic fuse fails to receive the protection action threshold after a set number of consecutive transmissions, the transmission is stopped and an electronic fuse abnormality is reported; the set number of transmissions is greater than or equal to 3.

[0016] Furthermore, the configuration module has a built-in program for configuring the protection action threshold; the configuration module is also used to output a program loading signal, which is low before the program is successfully loaded and high after the program is successfully loaded; the protection action threshold configuration system also includes a MODE selection circuit for connecting the configuration signal of the configuration module to the MODE pin of the electronic fuse through a transistor. The MODE selection circuit is used to prevent the transistor from conducting when the program loading signal is low, so that the input of the MODE pin is high. The protection action threshold of the electronic fuse is obtained through an external functional module for configuring the protection action threshold; The MODE selection circuit is also used to turn on the transistor when the program loading signal is high, so that the input of the MODE pin is low, and the protection action threshold of the electronic fuse is obtained from the configuration module through the IIC interface.

[0017] The technical solution of the valve control device power supply protection action threshold configuration system described above can achieve the same beneficial effects as the valve control device power supply protection action threshold configuration method described above.

[0018] This invention also provides a power supply for a valve control device, which is a cross-redundant power supply. In the power supply, system A is used as the main power supply for the first system and the backup power supply for the second system in the valve control device, respectively, after passing through a first electronic fuse. System B is used as the main power supply for the second system and the backup power supply for the first system in the valve control device, respectively, after passing through a second electronic fuse. The protection action thresholds of the first and second electronic fuses are configured using the aforementioned protection action threshold configuration method or system for the valve control device power supply.

[0019] The technical solution of the valve control device power supply described above not only enables another power supply system to automatically supply power to the back-end load connected to the faulty power supply system when one power supply system fails, ensuring the continuous and stable operation of the system and improving the system's availability and fault tolerance, but also achieves the same beneficial effects as the protection action threshold configuration method of the valve control device power supply described above. Attached Figure Description

[0020] Figure 1 This is a structural example diagram of the power supply for the valve control device in an embodiment of the present invention. Figure 2 This is an example diagram of temperature and humidity versus action threshold curves corresponding to different power supply states in the power supply embodiment of the valve control device of the present invention, when the protection action threshold is the overcurrent protection action threshold. Figure 3 This is an example diagram of the temperature-humidity-action threshold curve in the power supply embodiment of the valve control device of the present invention when the protection action threshold is the overvoltage protection action threshold; Figure 4 This is an example diagram of the temperature and humidity-action threshold curve when the protection action threshold of the power supply embodiment of the valve control device of the present invention is the undervoltage protection action threshold; Figure 5 This is a structural example diagram of the protection action threshold configuration system of the power supply of the valve control device in the embodiment of the present invention; Figure 6This is a flowchart illustrating how the protection action threshold of an electronic fuse is adjusted using a protection action threshold configuration system in an embodiment of the valve control device power supply of the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] Valve Control Device Power Supply Implementation Method This embodiment provides a technical solution for a power supply of a valve control device. By combining the working environment information with the power supply status, the protection action threshold of the electronic fuse connected to the power supply of the valve control device is adaptively adjusted. This ensures that the protection action threshold of the electronic fuse is reliable enough under different conditions, reducing false alarms, and also ensures that the protection action threshold of the electronic fuse is sensitive enough under different conditions, reducing false alarms, thereby balancing the reliability and sensitivity of the protection action.

[0023] The power supply for this valve control device is a cross-redundant power supply, including: In the power supply of the valve control device, the A power supply system is used as the main power supply for the first system and the backup power supply for the second system after passing through the first electronic fuse; the B power supply system is used as the main power supply for the second system and the backup power supply for the first system after passing through the second electronic fuse; the protection action thresholds of the first and second electronic fuses are configured by the protection action threshold configuration method or the protection action threshold configuration system of the valve control device power supply.

[0024] Specifically, refer to Figure 1 The power supply structure of the valve control device includes electronic system A and electronic system B, namely... Figure 1The dashed box in system A contains the power supply and common-mode filter 1, and other structures. Adaptive eFuse1 is the first electronic fuse, and adaptive eFuse2 is the second electronic fuse. The A power supply system, after passing through the first electronic fuse and power conversion 1, uses diodes D1 and D2 to serve as the main power supply for the downstream circuit of the first system (i.e., system A) and the backup power supply for the downstream circuit of the second system (i.e., system B) in the valve control device. Similarly, the B power supply system, after passing through the second electronic fuse and power conversion 2, uses diodes D3 and D4 to serve as the main power supply for the downstream circuit of the second system (i.e., system B) and the backup power supply for the downstream circuit of the first system (i.e., system A) in the valve control device. When the valve control device is working normally, diodes D3 and D2 in front of the backup power supplies of systems A and B will not conduct. Therefore, the power supplies of the A and B power supply systems in systems A and B supply power their respective systems. Assuming that when power supply system A fails, the downstream diode D3 will conduct, and power supply system B will provide backup power to system A through this redundant link, ensuring the stable operation of system A. The same applies when power supply system B fails. In other words, in this valve control device power supply, when one power supply system fails, the other power supply system will automatically supply power to the downstream load connected to the failed power supply system, ensuring continuous and stable system operation and improving system availability and fault tolerance.

[0025] In this embodiment, the method for configuring the protection action threshold of the valve control device power supply for configuring the protection action threshold of the first and second electronic fuses specifically includes the following when the protection action threshold is an overcurrent protection action threshold: The real-time power supply status of the A and B power supply systems in the power supply of the monitoring valve control device is monitored; from the pre-stored correlation between working environment information and protection action threshold under different power supply statuses, the correlation corresponding to the real-time power supply status is selected, and the protection action threshold is configured according to the selected correlation and the current working environment information. The power supply status includes the following: both power supply systems A and B are operating normally; only power supply system A is malfunctioning; and only power supply system B is malfunctioning.

[0026] Therefore, based on the operating environment information and power supply status, the overcurrent protection threshold of the electronic fuse connected to the valve control device's power supply is adaptively adjusted. This enables the dynamic adjustment of the threshold to a larger current protection value when the active system power supply fails, causing a sudden increase in the backup system current. This avoids the problem of setting a high-margin protection threshold for compatibility with main / backup power supply switching, which reduces sensitivity to overcurrent anomalies. Furthermore, when the valve control system faces extreme operating environments, the overcurrent protection threshold of the electronic fuse connected to the valve control device's power supply can also be adaptively adjusted to prevent risks such as overcurrent short circuits, overheating damage, or malfunctions due to mismatches between the overcurrent protection threshold and the current operating environment.

[0027] In this embodiment, the current working environment information includes temperature and humidity information in the current working environment; The methods for determining the correlation between operating environment information and protection action thresholds under different power supply conditions include: For each power supply state, the temperature and humidity are divided into two or more intervals. The valve control device is placed in each of the divided temperature and humidity intervals. By adjusting the power supply current, the overcurrent protection action threshold corresponding to different temperature and humidity intervals under this state is obtained, so as to determine the correlation between the working environment information and the protection action threshold under different power supply states.

[0028] In one specific embodiment, the correlation between the operating environment information and the protection action threshold under different power supply states is specifically represented by different temperature and humidity-action threshold curves corresponding to different power supply states, such as... Figure 2As shown; in other embodiments, it can also be represented by tables, setting index values, etc.; when the protection action threshold is the overcurrent protection action threshold, the temperature and humidity-action threshold curve corresponding to each power supply state describes the overcurrent protection action threshold of eFuse in different temperature / humidity ranges under that power supply state; for the case where the protection action threshold is the overcurrent protection action threshold, in the process of determining the temperature and humidity-action threshold curve, firstly, referring to the high and low temperature test range of the valve control device, the temperature and humidity are divided into several ranges; then, for the overcurrent protection threshold, it is necessary to comprehensively consider the working state of the power supply of systems A and B, and in each power supply state (the power supply state includes the power supply of systems A and B working normally, the power supply of only system A being abnormal, and the power supply of only system B being abnormal), the valve control device is placed in different divided temperature and humidity ranges for experiments, and by adjusting the power supply voltage, the process of obtaining the overcurrent action threshold of the valve control device in different ranges is obtained, so as to obtain the correlation between the working environment information and the overcurrent action threshold under each power supply state.

[0029] For overvoltage and undervoltage protection, since the impact of switching between the main and backup power supply systems is relatively small, the power supply status is not considered. The protection action threshold is adaptively adjusted mainly based on the operating environment information. Therefore, when the protection action threshold is the overvoltage or undervoltage protection action threshold, the configuration method for this protection action threshold includes: Monitor the real-time power supply status of the A and B power supply systems in the power supply of the monitoring valve control device; configure the protection action threshold based on the correlation between pre-stored working environment information and protection action threshold, combined with the current working environment information.

[0030] In one specific embodiment, the correlation between the determined working environment information and the protection action threshold is specifically represented by a temperature / humidity-action threshold curve. In other embodiments, it can also be represented by a table, setting index values, etc. For cases where the protection action threshold is an overvoltage or undervoltage protection action threshold, the temperature / humidity-action threshold curve describes the overvoltage or undervoltage protection action threshold of the eFuse in different temperature / humidity ranges. Regarding cases where the protection action threshold is an overvoltage or undervoltage protection action threshold, in the process of determining the temperature / humidity-action threshold curve, firstly, the curve is used to divide the temperature / humidity into several intervals based on the high and low temperature test range of the valve control device; then, the valve control device is placed in the aforementioned different temperature and humidity intervals to conduct experiments, and by adjusting the power supply voltage, the undervoltage or overvoltage values ​​of the valve control device in different intervals are obtained; finally, a first set percentage (20% in this embodiment) of working margin is reserved for the aforementioned undervoltage or overvoltage values ​​as the undervoltage or overvoltage protection action threshold for the corresponding temperature and humidity interval, resulting in... Figure 3The temperature and humidity-operation threshold curves shown are for overvoltage protection operation thresholds. Figure 4 The protection action threshold shown is the temperature and humidity-action threshold curve under the condition of undervoltage protection action threshold.

[0031] like Figure 3 As shown, for example, the current temperature is x If the current humidity is between 10% and 25%, the corresponding overvoltage protection threshold is: y 4; If the humidity is between 25% and 40%, the corresponding overvoltage protection threshold is: y 3; If the humidity is between 40% and 55%, the corresponding overvoltage protection threshold is: y 2; If the humidity is between 55% and 70%, the corresponding overvoltage protection threshold is: y 1. Figure 4 The same applies to the undervoltage protection action threshold.

[0032] The protection action threshold configuration system for the valve-controlled device power supply used to configure the protection action thresholds of the first and second electronic fuses specifically includes: a configuration module and a storage module for storing the protection action thresholds in the electronic fuses; in one specific embodiment, the storage module includes action threshold registers for storing different protection action thresholds (overcurrent, undervoltage, and overvoltage protection thresholds). Since the protection action thresholds of the electronic fuses can be configured according to actual operating conditions, it can be called an adaptive eFuse.

[0033] The configuration module is used to acquire the real-time power supply status of the A and B power supply systems in the monitored valve control device power supply when the protection action threshold is the overcurrent protection action threshold; it is also used to select the correlation relationship corresponding to the real-time power supply status from the pre-stored correlation relationship between the working environment information and the protection action threshold under different power supply statuses, and determine the corresponding protection action threshold based on the selected correlation relationship and the current working environment information, and send it to the storage module to configure the protection action threshold. The power supply status includes the following: both power supply systems A and B are operating normally; only power supply system A is malfunctioning; and only power supply system B is malfunctioning.

[0034] For the overcurrent protection action threshold, the configuration method is the same as the protection action threshold described above. The current working environment information includes the temperature and humidity information in the current working environment. The methods for determining the correlation between operating environment information and protection action thresholds (i.e., overcurrent protection action thresholds) under different power supply conditions include: For each power supply state, the temperature and humidity are divided into two or more intervals. The valve control device is placed in each of these intervals. By adjusting the power supply current, the overcurrent protection action threshold corresponding to each temperature and humidity interval under this state is obtained. This determines the correlation between the working environment information and the protection action threshold under different power supply states. Specifically, for each power supply state, the valve control device is placed in each of the defined temperature and humidity intervals. By adjusting the power supply current, the overcurrent value corresponding to each temperature and humidity interval under this power supply state is obtained. By reserving a second set percentage (20% in this embodiment) of working margin for the obtained overcurrent value, the overcurrent protection action threshold corresponding to each temperature and humidity interval under each power supply state is obtained. This determines the correlation between the working environment information and the protection action threshold under different power supply states.

[0035] Furthermore, the configuration module is also used to acquire the real-time power supply status of the A and B power supply systems in the monitored valve control device power supply when the protection action threshold is overvoltage or undervoltage. Based on the pre-stored correlation between the operating environment information and the protection action threshold, and combined with the current operating environment information, the module determines the corresponding protection action threshold and sends it to the storage module for configuration. The current operating environment information also needs to include temperature and humidity information. The method for determining the correlation between the operating environment information and the protection action threshold includes: The temperature and humidity are divided into two or more intervals. The valve control device is placed in the different temperature and humidity intervals. The undervoltage or overvoltage value of the valve control device in different temperature and humidity intervals is obtained by adjusting the power supply voltage. By reserving a set proportion of working margin for the obtained undervoltage or overvoltage value, the undervoltage or overvoltage protection action threshold corresponding to different temperature and humidity intervals is obtained, so as to determine the correlation between working environment information and protection action threshold.

[0036] In one specific embodiment, if the current working environment information includes temperature and humidity information, then the temperature and humidity information are acquired through a temperature acquisition module and a humidity acquisition module, respectively. The real-time power supply status is obtained based on monitoring signals from the power monitoring module.

[0037] To ensure timely detection of abnormal protection action threshold configurations, the protection action threshold configuration system in this embodiment also includes an IIC slave interface at the electronic fuse and an IIC master interface at the configuration module. These interfaces are used for data transmission from the configuration module to the electronic fuse, whereby the determined protection action threshold is sent. Furthermore, during the data transmission process, the system uses the standard IIC communication protocol to determine whether the electronic fuse has successfully received the protection action threshold. The configuration module is also used to repeatedly send the action threshold when the electronic fuse fails to receive it, until the electronic fuse successfully receives the protection action threshold. If the electronic fuse fails to receive the protection action threshold after a set number of consecutive attempts, the sending will stop and an electronic fuse anomaly will be reported. This set number of attempts is greater than or equal to 3. This ensures that the configured protection action threshold is sent to the electronic fuse as much as possible and that configuration anomalies are reported in a timely manner.

[0038] In addition, considering that during the program configuration and loading of the configuration module during the system power-on process, the configuration module cannot configure the protection action threshold of the electronic fuse through the IIC interface, this may cause the action threshold register inside the electronic fuse to be in an undefined state during power-on, thereby causing the electronic fuse to malfunction during power-on.

[0039] Therefore, in this embodiment, the configuration module has a built-in program for configuring the protection action threshold; the configuration module is also used to output a program loading signal. Before the program is successfully loaded in the configuration module, the program loading signal is low level, and after the program is successfully loaded in the configuration module, the program loading signal is high level; the protection action threshold configuration system also includes a MODE selection circuit for connecting the configuration signal of the configuration module to the MODE pin of the electronic fuse through a transistor. The MODE selection circuit is used to not conduct the transistor when the program loading signal is low level, so that the input of the MODE pin is high level, and the protection action threshold of the electronic fuse is obtained through an external functional module for configuring the protection action threshold; The MODE selection circuit is also used to turn on the transistor when the program loading signal is high, so that the input of the MODE pin is low, and the protection action threshold of the electronic fuse is obtained from the configuration module through the IIC interface.

[0040] In one specific embodiment, the configuration module is implemented through an FPGA; in other embodiments, it can also be implemented through other software or hardware controllers or processors. The IIC interface is the interface of the standard communication bus IIC (Inter-Integrated Circuit) circuit. The MODE selection circuit (i.e., the MODE selection circuit) is specifically implemented as follows: The FPGA loading completion pin "done" is connected to the adaptive eFuse's MODE pin via transistor D1. The level of the "done" pin is the program loading signal. During FPGA program loading, the "done" pin is low, transistor D1 is not conducting, and the MODE pin is pulled high by pull-up resistor R2. At this time, the adaptive eFuse's action threshold is determined by an external hardware-designed functional module for configuring the protection action threshold. When the FPGA program is loaded, the "done" pin is pulled high by pull-up resistor R1, transistor D1 conducts, and the adaptive eFuse's MODE pin is pulled low. Its action threshold can be adaptively configured by the FPGA through the IIC interface.

[0041] Reference Figure 5 In this embodiment, the structure of the external functional module for configuring protection action thresholds is the structure of the OVLO pin, UVLO pin, and ILIM pin of the electronic fuse. The overvoltage protection action threshold is determined by externally configuring pull-up and pull-down resistors R3 and R4 on the OVLO pin, the undervoltage protection action threshold is determined by externally configuring pull-up and pull-down resistors R5 and R6 on the UVLO pin, and the overcurrent protection action threshold is determined by externally configuring pull-down resistor R7 on the ILIM pin.

[0042] In this embodiment, the A / B system power supply monitor (i.e., the power supply monitoring module) monitors the operating status of the power supplies of systems A and B (i.e., A power supply system and B power supply system) in real time and feeds back the monitoring signals JS1 / JS2 to the FPGA. The FPGA determines whether the A / B system power supply is in normal or abnormal operating condition based on this. The temperature and humidity sensor monitors the ambient temperature and humidity in real time and feeds back the temperature and humidity signal JS3 to the FPGA. After receiving the signal from the temperature and humidity sensor, the FPGA, in conjunction with the real-time operating status of the A / B system power supply, maps the undervoltage / overvoltage / overcurrent protection action thresholds under the current environment according to the internally stored temperature and humidity-action threshold curves. Subsequently, the FPGA transmits the current protection action threshold to the adaptive eFuse through the IIC interface. After successfully receiving the signal, the adaptive eFuse stores the threshold in its internal register.

[0043] Then refer to Figure 6In this embodiment, the adaptive eFuse dynamically adjusts the action threshold according to the external working environment as follows: First, it determines the level of the done signal. If it is low, the overvoltage, undervoltage, or overcurrent action threshold takes the default value, i.e., the external hardware configuration value. If it is high, the FPGA queries the temperature and humidity-overvoltage protection action threshold curve and the temperature and humidity-undervoltage protection action threshold curve (e.g., based on the JS3 signal transmitted by the temperature and humidity sensor) based on the JS3 signal transmitted by the temperature and humidity sensor. Figure 3 and Figure 4 As shown in the figure, find the corresponding overvoltage and undervoltage protection action thresholds under the current temperature and humidity conditions.

[0044] Subsequently, the FPGA determines whether the valve control board's power supply is normal based on the JS1 / JS2 signals transmitted by the power monitoring circuit, i.e., it obtains the real-time power supply status. If normal (the power supplies in both power supply systems A and B are working normally), the FPGA queries the temperature and humidity-overcurrent protection action threshold curve 3 under normal operating conditions based on the temperature and humidity information transmitted by JS3, and finds the corresponding overcurrent protection action threshold under the current temperature and humidity state. If abnormal (only the power supply in power supply system A or only power supply system B is abnormal), the FPGA queries the temperature and humidity-overcurrent protection action threshold curve 3 under abnormal operating conditions based on the temperature and humidity information transmitted by JS3, and finds the corresponding overcurrent protection action threshold under the current temperature and humidity state. Finally, the FPGA writes the above overvoltage / undervoltage / overcurrent action thresholds into the adaptive eFuse internal register through the IIC interface. If the eFuse fails to receive the thresholds, the FPGA repeatedly sends the above action thresholds until the eFuse successfully receives them. If the FPGA sends the above action thresholds three times consecutively and the eFuse fails to receive them, the FPGA stops sending and reports an eFuse abnormality. Once the eFuse successfully receives the overvoltage / undervoltage / overcurrent action thresholds, it adjusts the undervoltage / overvoltage / overcurrent thresholds accordingly. This concludes the process of the adaptive eFuse dynamically adjusting the protection action thresholds.

[0045] Example of a method for configuring protection action thresholds for the power supply of a valve control device This embodiment provides a technical solution for configuring the protection action threshold of the power supply of a valve control device. By combining the working environment information with the power supply status, the protection action threshold of the electronic fuse connected to the power supply of the valve control device is adaptively adjusted, thereby taking into account both the reliability and sensitivity of the protection action.

[0046] Specifically, the method for configuring the protection action threshold of the power supply of the valve control device, when the protection action threshold is an overcurrent protection action threshold, specifically includes: The real-time power supply status of the A and B power supply systems in the power supply of the monitoring valve control device is monitored; from the pre-stored correlation between the working environment information and the protection action threshold under different power supply statuses, the correlation corresponding to the real-time power supply status is selected, and the protection action threshold is configured according to the selected correlation and the current working environment information. The power supply status includes the following: both power supply systems A and B are operating normally; only power supply system A is malfunctioning; and only power supply system B is malfunctioning.

[0047] Therefore, based on the operating environment information and power supply status, the overcurrent protection threshold of the electronic fuse connected to the valve control device's power supply is adaptively adjusted. This enables the dynamic adjustment of the threshold to a larger current protection value when the active system power supply fails, causing a sudden increase in the backup system current. This avoids the problem of setting a high-margin protection threshold for compatibility with main / backup power supply switching, which reduces sensitivity to overcurrent anomalies. Furthermore, when the valve control system faces extreme operating environments, the overcurrent protection threshold of the electronic fuse connected to the valve control device's power supply can also be adaptively adjusted to prevent risks such as overcurrent short circuits, overheating damage, or malfunctions due to mismatches between the overcurrent protection threshold and the current operating environment.

[0048] In this embodiment, the current working environment information includes temperature and humidity information in the current working environment; The methods for determining the correlation between operating environment information and protection action thresholds under different power supply conditions include: For each power supply state, the temperature and humidity are divided into two or more intervals. The valve control device is placed in each of the divided temperature and humidity intervals. By adjusting the power supply current, the overcurrent protection action threshold corresponding to different temperature and humidity intervals under this state is obtained, so as to determine the correlation between the working environment information and the protection action threshold under different power supply states.

[0049] In one specific embodiment, the correlation between the operating environment information and the protection action threshold under different power supply states is specifically represented by different temperature and humidity-action threshold curves corresponding to different power supply states, such as... Figure 2As shown; in other embodiments, it can also be represented by tables, setting index values, etc.; when the protection action threshold is the overcurrent protection action threshold, the temperature and humidity-action threshold curve corresponding to each power supply state describes the overcurrent protection action threshold of eFuse in different temperature / humidity ranges under that power supply state; for the case where the protection action threshold is the overcurrent protection action threshold, in the process of determining the temperature and humidity-action threshold curve, firstly, referring to the high and low temperature test range of the valve control device, the temperature and humidity are divided into several ranges; then, for the overcurrent protection threshold, it is necessary to comprehensively consider the working state of the power supply of systems A and B, and in each power supply state (the power supply state includes the power supply of systems A and B working normally, the power supply of only system A being abnormal, and the power supply of only system B being abnormal), the valve control device is placed in different divided temperature and humidity ranges for experiments, and by adjusting the power supply voltage, the process of obtaining the overcurrent action threshold of the valve control device in different ranges is obtained, so as to obtain the correlation between the working environment information and the overcurrent action threshold under each power supply state.

[0050] For overvoltage and undervoltage protection, since the impact of switching between the main and backup power supply systems is relatively small, the power supply status is not considered. The protection action threshold is adaptively adjusted mainly based on the operating environment information. Therefore, when the protection action threshold is the overvoltage or undervoltage protection action threshold, the configuration method for this protection action threshold includes: Monitor the real-time power supply status of the A and B power supply systems in the power supply of the monitoring valve control device; configure the protection action threshold based on the correlation between pre-stored working environment information and protection action threshold, combined with the current working environment information.

[0051] In one specific embodiment, the correlation between the determined working environment information and the protection action threshold is specifically represented by a temperature-humidity-action threshold curve. In other embodiments, it can also be represented by a table, setting index values, etc. For the case where the protection action threshold is an overvoltage or undervoltage protection action threshold, the temperature-humidity-action threshold curve describes the overvoltage or undervoltage protection action threshold of the eFuse in different temperature / humidity ranges. In the process of determining the temperature-humidity-action threshold curve for the case where the protection action threshold is an overvoltage or undervoltage protection action threshold, firstly, the curve is divided into several temperature / humidity ranges with reference to the high and low temperature test range of the valve control device. Then, the valve control device is placed in the above-mentioned different temperature and humidity ranges to carry out experiments. By adjusting the power supply voltage, the undervoltage or overvoltage value of the valve control device in different ranges is obtained. Finally, a working margin of a predetermined proportion (20% in this embodiment) is reserved for the above-mentioned undervoltage or overvoltage value as the undervoltage or overvoltage protection action threshold of the corresponding temperature and humidity range, thus obtaining the temperature-humidity-action threshold curve when the protection action threshold is the overvoltage protection action threshold and the temperature-humidity-action threshold curve when the protection action threshold is the undervoltage protection action threshold.

[0052] Example of a protection action threshold configuration system for valve control device power supply This embodiment provides a technical solution for configuring the protection action threshold of a valve control device power supply. The method uses a configuration module to adaptively update the protection action threshold of the electronic fuse connected to the valve control device power supply by combining the working environment information with the power supply status, thereby ensuring that the electronic fuse takes into account both the reliability and sensitivity of the protection action.

[0053] Since the specific content, working principle and implementation of this system have been described in detail in the above-described power supply implementation of the valve control device, they will not be repeated here.

[0054] It should be understood that the above-described specific embodiments of the present invention are merely illustrative or explanatory of the principles of the present invention, and do not constitute a limitation thereof.

Claims

1. A method for configuring the protection action threshold of a power supply for a valve control device, wherein the power supply for the valve control device is a cross-redundant power supply, characterized in that, When the protection action threshold is the overcurrent protection action threshold, the method includes: The real-time power supply status of the A and B power supply systems in the power supply of the monitoring valve control device is monitored; from the pre-stored correlation between working environment information and protection action threshold under different power supply statuses, the correlation corresponding to the real-time power supply status is selected, and the protection action threshold is configured according to the selected correlation and the current working environment information. The power supply status includes the following: both power supply systems A and B are operating normally; only power supply system A is malfunctioning; and only power supply system B is malfunctioning.

2. The method for configuring the protection action threshold of the power supply of the valve control device according to claim 1, characterized in that, The current working environment information includes temperature and humidity information in the current working environment; The methods for determining the correlation between operating environment information and protection action thresholds under different power supply conditions include: For each power supply state, the temperature and humidity are divided into two or more intervals. The valve control device is placed in each of the divided temperature and humidity intervals. By adjusting the power supply current, the overcurrent protection action threshold corresponding to different temperature and humidity intervals under this state is obtained, so as to determine the correlation between the working environment information and the protection action threshold under different power supply states.

3. The method for configuring the protection action threshold of the power supply of the valve control device according to claim 1, characterized in that, When the protection action threshold is the overvoltage or undervoltage protection action threshold, the method includes: Monitor the real-time power supply status of the A and B power supply systems in the power supply of the monitoring valve control device; configure the protection action threshold based on the correlation between pre-stored working environment information and protection action threshold, combined with the current working environment information.

4. The method for configuring the protection action threshold of the power supply of the valve control device according to claim 3, characterized in that, The current working environment information includes temperature and humidity information in the current working environment; The methods for determining the correlation between working environment information and protection action thresholds include: The temperature and humidity are divided into two or more intervals. The valve control device is placed in the different temperature and humidity intervals. The undervoltage or overvoltage value of the valve control device in different temperature and humidity intervals is obtained by adjusting the power supply voltage. By reserving a set proportion of working margin for the obtained undervoltage or overvoltage value, the undervoltage or overvoltage protection action threshold corresponding to different temperature and humidity intervals is obtained, so as to determine the correlation between working environment information and protection action threshold.

5. A protection action threshold configuration system for a valve control device power supply, wherein the valve control device power supply is a cross-redundant power supply, characterized in that, It includes a configuration module and a storage module for storing protection action thresholds set in the electronic fuse; The configuration module is used to acquire the real-time power supply status of the A power supply system and the B power supply system in the monitored valve control device power supply when the protection action threshold is the overcurrent protection action threshold; it is also used to select the correlation relationship corresponding to the real-time power supply status from the pre-stored correlation relationship between the working environment information and the protection action threshold under different power supply statuses, and determine the corresponding protection action threshold based on the selected correlation relationship and the current working environment information, and send it to the storage module to configure the protection action threshold. The power supply status includes the following: both power supply systems A and B are operating normally; only power supply system A is malfunctioning; and only power supply system B is malfunctioning.

6. The protection action threshold configuration system for the power supply of the valve control device according to claim 5, characterized in that, The current working environment information includes temperature and humidity information in the current working environment; The methods for determining the correlation between operating environment information and protection action thresholds under different power supply conditions include: For each power supply state, the temperature and humidity are divided into two or more intervals. The valve control device is placed in each of the divided temperature and humidity intervals. By adjusting the power supply current, the overcurrent protection action threshold corresponding to different temperature and humidity intervals under this state is obtained, so as to determine the correlation between the working environment information and the protection action threshold under different power supply states.

7. The protection action threshold configuration system for the power supply of the valve control device according to claim 5, characterized in that, The configuration module is also used to obtain the real-time power supply status of the A and B power supply systems in the monitored valve control device power supply when the protection action threshold is the overvoltage or undervoltage protection action threshold; based on the pre-stored correlation between the working environment information and the protection action threshold, combined with the current working environment information, to determine the corresponding protection action threshold and send it to the storage module for configuring the protection action threshold.

8. The protection action threshold configuration system for the power supply of the valve control device according to claim 5, characterized in that, The current working environment information includes temperature and humidity information in the current working environment; The methods for determining the correlation between working environment information and protection action thresholds include: The temperature and humidity are divided into two or more intervals. The valve control device is placed in the different temperature and humidity intervals. The undervoltage or overvoltage value of the valve control device in different temperature and humidity intervals is obtained by adjusting the power supply voltage. By reserving a set proportion of working margin for the obtained undervoltage or overvoltage value, the undervoltage or overvoltage protection action threshold corresponding to different temperature and humidity intervals is obtained, so as to determine the correlation between working environment information and protection action threshold.

9. The protection action threshold configuration system for the power supply of the valve control device according to claim 5, characterized in that, It also includes the IIC slave interface at the electronic fuse and the IIC master interface at the configuration module, which are used for data transmission from the configuration module to the electronic fuse by sending the determined protection action threshold. It is also used to determine whether the electronic fuse has successfully received the protection action threshold during the data transmission process in which the configuration module sends the determined protection action threshold to the electronic fuse using the standard IIC communication protocol; The configuration module is also used to repeatedly send the action threshold when the electronic fuse fails to receive it, until the electronic fuse successfully receives the protection action threshold. If the electronic fuse fails to receive the protection action threshold after a set number of consecutive transmissions, the transmission will stop and an electronic fuse malfunction will be reported; the set number of transmissions is greater than or equal to 3.

10. The protection action threshold configuration system for the power supply of the valve control device according to claim 9, characterized in that, The configuration module has a built-in program for configuring protection action thresholds. The configuration module also outputs a program loading signal, which is low before the program is successfully loaded and high after successful loading. The protection action threshold configuration system also includes a MODE selection circuit that connects the configuration signal from the configuration module to the MODE pin of the electronic fuse via a transistor. This MODE selection circuit prevents the transistor from conducting when the program loading signal is low, thus making the input of the MODE pin high. The protection action threshold of the electronic fuse is obtained through an external function module for configuring the protection action threshold. The MODE selection circuit is also used to turn on the transistor when the program loading signal is high, so that the input of the MODE pin is low, and the protection action threshold of the electronic fuse is obtained from the configuration module through the IIC interface.

11. A power supply for a valve control device, wherein the power supply for the valve control device is a cross-redundant power supply, characterized in that, In the power supply of the valve control device, electronic system A is used as the main power supply for the first system and the backup power supply for the second system after passing through the first electronic fuse; electronic system B is used as the main power supply for the second system and the backup power supply for the first system after passing through the second electronic fuse; the protection action thresholds of the first and second electronic fuses are configured by the protection action threshold configuration method of the power supply of the valve control device according to any one of claims 1-4 or the protection action threshold configuration system of the power supply of the valve control device according to any one of claims 5-10.

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