Virtual synthesis device for double sets of control and protection devices and data processing method of virtual synthesis device

Abstract

The invention relates to the technical field of flexible direct current control and protection devices, in particular to a virtual synthesis device of double sets of control and protection devices and a data processing method thereof, the virtual synthesis device comprises a first control and protection device and a second control and protection device, and the virtual synthesis device further comprises a data processing module used for obtaining data of the double sets of control and protection devices, processing the data to obtain synthetic data; the on-duty state judgment module is used for automatically judging the on-duty state of the double sets of control and protection devices based on the information of the double sets of control and protection devices and storing the on-duty state in an on-duty state field of the switch knife switch model; and the remote control operation association module is used for acquiring a remote control instruction and performing remote control operation on the control and protection device in the on-duty state based on the remote control instruction and the on-duty state. According to the method, the operation process is simplified, the possibility of human errors is reduced, the automation degree and the response speed of the system are improved, and the method is suitable for the double-set configuration scene of the control and protection device in the flexible direct-current power transmission system.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible direct current control and protection devices, and in particular to a dual-set control and protection device virtual synthesis device and a data processing method thereof. Background Art

[0002] In flexible DC transmission systems, dual configuration of control and protection devices is a common practice. Dual configuration means there are two independent control and protection devices, one of which is the main duty device, responsible for real-time monitoring and precise control of the system; the other is the backup device, which maintains a high alert state and is ready to seamlessly take over the work of the duty device at any time to ensure the continuous and stable operation of the system.

[0003] The original intention of the dual configuration design is to improve the reliability and redundancy of the system. However, in actual applications, how to achieve efficient and accurate switching between the duty and standby devices has become an urgent problem to be solved. At present, most dual configuration control and protection devices often rely on cumbersome logical judgment processes or require direct human intervention when switching states. This dependence not only greatly increases the complexity and difficulty of operation, but also inevitably introduces the risk of human error, which in turn affects the overall automation level and response efficiency of the system.

[0004] Specifically, complex logical judgment mechanisms may cause the switching process to be prolonged, increasing the instability of the system; while manual intervention may further aggravate the vulnerability of the system due to untimely response or operational errors. Summary of the invention

[0005] The purpose of the present invention is to provide a dual-set control and protection device virtual synthesis device and a data processing method thereof in order to solve at least one of the above-mentioned technical problems, aiming to fundamentally solve the problems of complex switching and low degree of automation existing in the prior art, and provide more solid technical support for the stable operation of the flexible direct current transmission system.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A dual-set control and protection device virtual synthesis device, comprising a first control and protection device and a second control and protection device, the virtual synthesis device further comprising:

[0008] A data processing module is used to obtain data from the dual sets of control and protection devices and process the data to obtain synthetic data;

[0009] A duty status judgment module, used for automatically judging the duty status of the dual-set control and protection devices based on the information of the dual-set control and protection devices, and storing the duty status in the duty status field of the switch knife switch model;

[0010] The remote control operation association module is used to obtain remote control instructions, and perform remote control operations on the control and protection device in the duty state based on the remote control instructions and the duty state.

[0011] Furthermore, the duty status field is used to identify in real time whether the control and protection device is currently in a duty state or a standby state.

[0012] Furthermore, the duty status field is displayed on the human-computer interaction interface in a visual manner.

[0013] Furthermore, the visualization method includes at least one of the following: a status indicator light and a color code.

[0014] Furthermore, the data structure stored in the data processing module is consistent with the data structure stored in the dual sets of control and protection devices.

[0015] Furthermore, automatically judging the duty status of the dual sets of control and protection devices based on the information of the dual sets of control and protection devices includes:

[0016] Acquire the status information of the first security control device and the second security control device in real time,

[0017] Based on the status information and preset rules, the control and protection devices in the duty state are judged; the preset rules are pre-set by experts according to the characteristics of the system and historical data, and are used to evaluate the operating status of the equipment or system.

[0018] Furthermore, the status information includes: working status, fault status, and performance parameters.

[0019] Furthermore, the preset rules include:

[0020] Determine the duty status determination mode of the virtual synthesis device;

[0021] When the virtual synthesis device is in the DCB duty status judgment mode, it is judged whether the communication status of the first control and protection device and the second control and protection device is normal; if the communication status of one of the control and protection devices is abnormal, the control and protection device with normal communication status is set to be in the duty status; if the communication status of both control and protection devices is normal, the duty status of the control and protection devices is read, and the control and protection device in the duty status is kept in the duty status;

[0022] When the virtual synthesis device is in the SAC self-judgment mode, determine whether the communication status of the first control and protection device and the second control and protection device is normal; if the communication status of one of the control and protection devices is abnormal, set the control and protection device with normal communication status to be on duty; if the communication status of both sets of control and protection devices is normal, determine whether the health status of both sets of control and protection devices is normal; if the health status of one of the control and protection devices is abnormal, set the control and protection device with normal health status to be on duty; if the health status of both sets of control and protection devices is normal, set the first control and protection device to be on duty.

[0023] Further, the control and protection device in the duty state is remotely controlled based on the remote control instruction and the duty state, including: judging the control and protection device in the duty state based on the duty state field value of the dual sets of control and protection devices, and the user remotely controls the control and protection device in the duty state based on the remote control instruction;

[0024] or,

[0025] The user does not distinguish the control and security devices in the duty state and directly sends the remote control instruction to the virtual synthesis device, and the virtual synthesis device directly remotely controls the control and security devices in the duty state.

[0026] A data processing method for a dual-set control and protection device virtual synthesis device is applied to any of the dual-set control and protection device virtual synthesis devices as described above, and the method comprises the following steps:

[0027] Obtain data from two sets of control and protection devices, and process the data to obtain synthetic data;

[0028] Automatically determine the duty status of the dual-set control and protection devices based on the information of the dual-set control and protection devices, and store the duty status in the duty status field of the switch knife switch model;

[0029] A remote control instruction is obtained, and based on the remote control instruction and the duty status, a remote control operation is performed on the control and protection device in the duty status.

[0030] The beneficial effects of the present invention are:

[0031] The present invention proposes a virtual synthesis device of a double set of control and protection devices based on duty status judgment and a data processing method thereof; by expanding the switch knife model, a new duty status field is introduced, thereby constructing an efficient and reliable virtual synthesis device data model; by adding a service program for judging the duty status and closely associating the remote control operation with the virtual synthesis device, accurate automatic judgment of the duty and standby status of the double set of control and protection devices and efficient remote control operation are realized.

[0032] The present invention significantly improves the operating efficiency and reliability of the flexible DC control and protection device under the dual-set configuration. It can not only judge the duty status of the control and protection device in real time and accurately, but also automatically perform remote control operations according to the duty status, thereby greatly reducing manual intervention and improving the automation level and response speed of the system. This is of great significance for ensuring the stable operation of the flexible DC transmission system and improving the efficiency of power transmission and distribution in occasions such as wind farm grid connection, island power supply, and urban microgrid.

[0033] The present invention realizes intelligent judgment and efficient remote control operation of the duty and standby status of the dual sets of control and protection devices, provides solid technical support for the stable operation of the flexible DC transmission system, and also provides a more efficient and reliable solution for power transmission and distribution in related fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of a virtual synthesis device of a dual-set control and protection device according to an embodiment of the present invention;

[0035] Figure 2 A logical diagram of a virtual synthesis device of a dual set of control and protection devices according to an embodiment of the present invention;

[0036] Figure 3 It is a schematic diagram of the principle of a virtual synthesis device of a dual set of control and protection devices according to an embodiment of the present invention;

[0037] Figure 4 A flowchart of a service procedure for judging the duty status of a virtual synthesis device of a dual-set control and protection device according to an embodiment of the present invention;

[0038] Figure 5 A schematic diagram of remote control operation of a picture synthesis measuring point of a virtual synthesis device of a dual-set control and protection device according to an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of the preset logic rules for the duty status of the virtual synthesis device of the dual-set control and protection device according to one embodiment of the present invention;

[0040] Figure 7 The present invention is a flowchart of a data processing method for a virtual synthesis device of a dual set of control and protection devices according to an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The content of the present invention will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are only to enable those skilled in the art to better understand and thus implement the content of the present invention, rather than implying any limitation on the scope of the present invention.

[0042] As used herein, the term “including” and variations thereof are to be interpreted as open-ended terms meaning “including, but not limited to.” The term “based on” is to be interpreted as “based, at least in part, on.” The terms “one embodiment” and “an embodiment” are to be interpreted as “at least one embodiment.”

[0043] Embodiment 1

[0044] Figure 1 This is a schematic diagram of the structure of a virtual synthesis device of a dual-set control and protection device according to an embodiment of the present invention. Figure 2 This is a logic diagram of a virtual synthesis device of a dual set of control and protection devices according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the principle of a virtual synthesis device of a dual set of control and protection devices according to an embodiment of the present invention. Figure 1-3 As shown, according to an embodiment of the present invention, a dual-set control and protection device virtual synthesis device includes a first control and protection device and a second control and protection device, and further includes:

[0045] The data processing module 10 is used to obtain data from the dual sets of control and protection devices and process the data to obtain synthetic data;

[0046] A duty status judgment module 20, used to automatically judge the duty status of the dual-set control and protection devices based on the information of the dual-set control and protection devices, and store the duty status in the duty status field of the switch knife model;

[0047] The remote control operation association module 30 is used to obtain remote control instructions, and perform remote control operations on the control and protection device in the duty state based on the remote control instructions and the duty state.

[0048] Preferably, the duty status field is used to identify in real time whether the control and protection device is currently in a duty state or a standby state.

[0049] Preferably, the duty status field is displayed on the human-computer interaction interface in a visual manner.

[0050] Preferably, the visualization method includes at least one of the following: a status indicator light, a color code.

[0051] Preferably, the data structure stored in the data processing module 10 is consistent with the data structure stored in the dual sets of control and protection devices.

[0052] In this embodiment, the dual-set control and protection device virtual synthesis device integrates the first control and protection device and the second control and protection device, and the virtual synthesis device includes a data processing module 10, a duty status judgment module 20 and a remote control operation association module 30.

[0053] The data processing module 10 is responsible for acquiring and processing the data of the dual sets of control and protection devices to generate synthetic data. The duty status judgment module 20 automatically judges the duty status of the dual sets of control and protection devices based on the information, and stores the duty status in real time in the duty status field of the extended switch knife model. The duty status field clearly displays whether each control and protection device is in duty or standby status on the human-computer interaction interface through visualization methods such as status indicator lights and color coding. The extended switch knife model not only includes a duty status field for recording the duty / standby status of the switch knife, but also includes other necessary status fields, such as current, voltage, etc., to ensure the comprehensiveness of the information.

[0054] The virtual synthesis device of the dual-set control and protection device constructs a virtual synthesis device data model that matches the extended switch knife switch model. The virtual synthesis device data model and the dual-set control and protection device adopt a unified data structure, which can receive, process and transmit the data information of each control and protection device. Since the virtual synthesis device data model is compatible with the original data models of each control and protection device, the coordinated operation of the overall system can be achieved. The virtual synthesis device data model not only includes the duty status field, but also has a built-in data processing module 10 for synthesizing the dual-set control and protection device signal and a duty status judgment module 20 for judging the duty status. The service program in the duty status judgment module 20 automatically judges the duty status of the dual-set control and protection device by receiving the real-time status information of the dual-set control and protection device, system operation data or other relevant parameters, and updates the duty status field.

[0055] The remote control operation association module 30 associates the remote control operation function in the human-computer interaction interface with the virtual synthetic device, ensuring that when the operator issues a remote control command, he can select the control and protection device in the duty state based on the value of the duty status field for remote control operation, thereby realizing the intelligent management and efficient operation of the dual sets of control and protection devices.

[0056] The dual-set control and protection device virtual synthesis device of the present invention reduces the possibility of human operation errors and improves the system's automation level and response speed by adding a duty status field and automatically performing remote control operations based on the duty status. The dual-set control and protection device virtual synthesis device of the present invention is suitable for the dual-set configuration scenario of the control and protection device in the flexible DC transmission system.

[0057] Figure 4 This is a flowchart of the on-duty status judgment service program of the virtual synthesis device of the dual-set control and protection device in one embodiment of the present invention. Figure 4 As shown, according to an embodiment of the present invention, automatically judging the duty status of the dual-set control and protection device based on the information of the dual-set control and protection device includes:

[0058] Real-time acquisition of status information of the first control and protection device and the second control and protection device,

[0059] Based on the status information and preset rules, the control and protection devices in the duty state are judged; the preset rules are set in advance by experts according to the characteristics of the system and historical data, and are used to evaluate the operating status of the equipment or system.

[0060] Preferably, the status information includes: working status, fault status, and performance parameters.

[0061] In this embodiment, the data processing module 10 includes a synthesis logic unit, which generates synthetic data through a preset synthesis algorithm based on the real-time data of the dual control and protection devices, and outputs the synthetic data to the corresponding control actuator. The duty status judgment module 20 judges the control and protection device in the duty state based on the status information of the dual control and protection devices and the preset rules. The status information includes real-time data (such as physical quantities such as voltage, current, frequency, temperature, etc.), equipment status data (such as the operating status of the equipment, switch status, fault code, etc.), historical data (system operation records for a period of time in the past, used to analyze trends and make more accurate judgments), environmental data (such as external temperature, humidity, power grid load conditions, etc., which may also affect the operating status of the system), etc., to accurately judge whether the control and protection device is in the communication, maintenance, shutdown, standby, check-in and other states.

[0062] Preset rules are set in advance by experts based on the characteristics and historical data of the system to evaluate the operating status of the equipment or system. Preset rules may include thresholds, logical rules, time windows, etc. Among them, the threshold is for different parameters of the system to define its normal operating range; for example, for voltage, a minimum and maximum value can be defined, and exceeding this range is considered abnormal. Logical rules include conditions and logical relationships, defining reactions under different states; for example, "if the temperature of the equipment exceeds 80°C and lasts for more than 5 minutes, it is judged as a warning state." The time window is for some rules that may involve the analysis of data within a period of time in order to detect trend problems; for example, if the voltage fluctuates more than 10 times within one minute, it is an unstable state. The operating status of the equipment or system is evaluated by obtaining the normal operating threshold, fault status code, etc. of the control and protection device.

[0063] The present invention obtains the status information of the dual sets of control and protection devices in real time, accurately determines the duty status of the control and protection devices based on preset expert rules, and uses a synthetic logic unit to generate synthetic data, thereby improving the automation level and operation efficiency of the flexible DC transmission system and ensuring the stable operation of the system.

[0064] According to one embodiment of the present invention, the preset rules include:

[0065] Determine the duty status determination mode of the virtual synthesis device;

[0066] When the virtual synthesis device is in the DCB duty status judgment mode, it is judged whether the communication status of the first control and protection device and the second control and protection device is normal; if the communication status of one of the control and protection devices is abnormal, the control and protection device with normal communication status is set to be in the duty status; if the communication status of both control and protection devices is normal, the duty status of the control and protection device is read, and the control and protection device in the duty status is kept in the duty status;

[0067] When the virtual synthesis device is in the SAC self-judgment mode, determine whether the communication status of the first control and protection device and the second control and protection device is normal; if the communication status of one of the control and protection devices is abnormal, set the control and protection device with normal communication status to be on duty; if the communication status of both sets of control and protection devices is normal, determine whether the health status of both sets of control and protection devices is normal; if the health status of one of the control and protection devices is abnormal, set the control and protection device with normal health status to be on duty; if the health status of both sets of control and protection devices is normal, set the first control and protection device to be on duty.

[0068] The present invention sets preset rules, including a virtual synthetic device's duty status judgment mode and a SAC self-judgment mode, and intelligently selects a control and protection device on duty according to the communication status and health status of the control and protection device, ensuring that there is a set of reliable control and protection devices in operation under any circumstances, thereby improving the stability and reliability of the system.

[0069] Figure 5 This is a schematic diagram of remote control operation of the screen synthesis measuring point of the virtual synthesis device of the dual-set control and protection device in one embodiment of the present invention. Figure 5 As shown, according to an embodiment of the present invention, remotely controlling a security device in a duty state based on a remote control instruction and a duty state includes: judging the security device in a duty state based on the duty state field value of the dual security devices, and the user remotely controlling the security device in the duty state based on the remote control instruction;

[0070] or,

[0071] The user does not distinguish the control and protection devices in the duty state and directly sends remote control instructions to the virtual synthetic device, and the virtual synthetic device directly remotely controls the control and protection devices in the duty state.

[0072] In this embodiment, in the remote control operation function of the human-machine interface, the remote control operation is associated with the virtual synthesis device, and according to the value of the duty status field, the device in the duty state is automatically selected for remote control operation or the remote control operation of the synthesized data is performed through the virtual synthesis device. The remote control operation association module 30 associates the remote control operation function in the human-machine interface with the virtual synthesis device, so that when the operator issues a remote control instruction, the system can automatically select the device in the duty state for remote control operation according to the value of the duty status field, or perform the remote control operation of the synthesized data through the virtual synthesis device.

[0073] The present invention associates remote control operations with virtual synthesis devices and automatically selects or executes remote control instructions according to the duty status of the control and protection devices, thereby achieving accurate and efficient remote control operations of the control and protection devices in the duty status, and improving the operational convenience and operational flexibility of the system.

[0074] Embodiment 2

[0075] like Figure 1-6 As shown, according to one embodiment of the present invention, a dual-set control and protection device virtual synthesis device includes:

[0076] 1. Expand the switch model of primary equipment

[0077] In the original switch model, a duty status field is added. This field is displayed on the human-machine interface through a status indicator, color coding or other visual methods to identify in real time whether the device is currently in duty status or standby status. In this way, the operator can intuitively understand the status of the dual-set control and protection devices and make correct operating decisions.

[0078] 2. Establish a virtual synthesis device data model

[0079] A new virtual synthesis device data model is created, which maintains structural and data consistency with the data model of the dual control and protection devices. The virtual synthesis device data model includes a duty status field and a synthesis logic module for synthesizing the dual control and protection device signals. The synthesis logic module generates synthetic data based on the real-time data of the dual control and protection devices through a preset synthesis algorithm and outputs the synthetic data to the corresponding control actuator. In this way, even when the duty device fails, the continuous operation of the system can be guaranteed through the virtual synthesis device.

[0080] 3. Add a service program to determine the duty status

[0081] A service program is added to the system to determine the duty status of the dual control and protection devices in real time. The service program automatically determines the duty status of the dual control and protection devices by receiving the real-time status information of the dual control and protection devices, system operation data or other relevant parameters, and stores the determination result in the duty status field. In this way, the system can automatically select the control and protection device in the duty state for remote control operation according to the value of the duty status field, or perform remote control operation of synthetic data through a virtual synthetic device.

[0082] 1) Method for judging duty status

[0083] The judgment of the duty status mainly depends on a service program, which monitors the status of the two sets of control and protection devices in real time and determines which set of control and protection devices is in the duty state according to the preset logical rules. The following are the main methods for judging the duty status:

[0084] Real-time status monitoring: The service program continuously collects real-time status information from the dual sets of control and protection devices, including the working status, fault status, performance parameters, etc. of the control and protection devices.

[0085] Preset rule matching: Based on the collected status information, the service program matches the preset rules. These rules may include the normal operation threshold of the device, fault status code, etc.

[0086] Duty status determination: If the status information of a set of control and protection devices meets the duty status conditions defined in the preset rules (for example, the control and protection device is in normal operation and the performance parameters meet the requirements), then the control and protection device is determined to be in duty status.

[0087] Status update and notification: Once the duty status is determined, the service program will update the value of the duty status field and display it to the operator through the human-machine interface. At the same time, the program may also trigger relevant notifications or log records for subsequent auditing or troubleshooting.

[0088] 2) The process of judging the duty status

[0089] Start the service program: When the system is started or initialized, the duty status judgment service program is also started.

[0090] Collect status information: The service program collects status information from the dual sets of control and protection devices periodically or in real time.

[0091] Rule matching: The collected status information is matched with the preset rules.

[0092] Duty status determination: Based on the matching results, the service program determines which set of control and protection devices meets the duty status conditions.

[0093] Status update: The service program updates the value of the duty status field to ensure that the latest status information is displayed on the human-machine interface.

[0094] Notification and Recording: As needed, the service program sends notifications to the operator and records relevant logs.

[0095] Circular monitoring: The service program continues to return to the "collect status information" step and continuously monitors the status of the two sets of control and protection devices to ensure the real-time and accuracy of the duty status judgment.

[0096] This method and process ensures that the system always knows which control and protection device is on duty, so that it can make correct remote control operation or synthetic data decisions.

[0097] 4. Core logic for automatically determining duty status

[0098] The core logic of automatic judgment of duty status is based on multiple factors such as equipment operating status, environmental parameters and system scheduling requirements, and is implemented through a series of preset rules, algorithms or machine learning models. The automatic judgment process involves multi-dimensional information processing and analysis, rather than simply relying on fixed values ​​set by humans.

[0099] The details of the judgment logic include:

[0100] 1) Data collection and monitoring

[0101] First, the operating status of the equipment, environmental parameters (such as temperature, humidity, pressure, etc.) and other external data that may affect the status of the equipment are collected in real time through data collection and log systems. The monitoring system also needs to collect information such as the equipment's operating logs, historical fault data, and current system tasks or scheduling requirements.

[0102] 2) Setting of judgment criteria

[0103] Based on preset rules or algorithms, the criteria for determining different states are defined. For example, the states of a device such as standby, running, or fault can be represented by different operating parameter ranges.

[0104] For dual control and protection devices, the working status of the two control and protection devices is recorded separately, and the operation status of the two control and protection devices is compared to determine whether they need to be synthesized. For example, one control and protection device can be set as the main device and the other control and protection device as the backup device in advance; when the main device fails or its performance degrades, whether the backup device can take over seamlessly.

[0105] 3) Weight and priority allocation

[0106] Different weights are set for different data sources to ensure that key data has a greater impact on the judgment results. For example, the weight of equipment operating status parameters is larger, while the weight of environmental parameters is smaller.

[0107] For different types of tasks or operating environments, set priorities to determine whether the current system uses the main device to process tasks or needs to switch to the backup device.

[0108] 4) Anomaly detection and fault prediction

[0109] With the help of fault prediction models or anomaly detection algorithms (such as machine learning models based on historical data), it is determined whether the equipment has potential failure risks. If the system detects that the main equipment has potential failure, it will actively issue an early warning and start the preparation of the backup equipment.

[0110] Realize dynamic status judgment and adjust the judgment results in real time according to changes in equipment performance or system scheduling.

[0111] 5) Status synthesis of two devices

[0112] The states of the two sets of equipment are synthesized, that is, a final synthesized state is generated according to the current operating states of the two sets of equipment and the system requirements. This synthesized state is not just a simple superposition of the two, but an optimized synthesis based on system tasks and equipment priorities.

[0113] For example, the main device is slightly lower than the backup device in some performance indicators, but if the current load of the main device is more suitable for system requirements, it is determined that the main device continues to undertake the task without switching.

[0114] 6) Automatic decision making and switching

[0115] The system automatically makes decisions based on the current status. For example, if the system determines that the main device needs to be shut down, it will immediately start the backup device, ensuring seamless switching of data and tasks.

[0116] Decisions can be triggered based on preset thresholds, trend analysis, predictive models, and more.

[0117] The following are two application scenarios.

[0118] Scenario 1: The primary device is overloaded and the backup device is in good condition

[0119] The operating log of the main device shows that its temperature and load are close to critical values. After analysis by the fault prediction model, it is suggested that performance degradation or downtime may occur. The system judges through state synthesis that the backup device can take over seamlessly, so it starts the backup device in advance to complete the task switch.

[0120] Scenario 2: Both devices are in good condition and no switching is required

[0121] Both the main device and the backup device are in good condition. Based on the scheduling requirements and the current task load, the system determines that there is no need to switch devices and continues to use the main device to process the current task.

[0122] 5. Use the preset rule set to match and analyze the received status information

[0123] Matching and analyzing the received status information with a preset set of rules means comparing and analyzing the real-time status data collected from the system through a set of pre-defined judgment criteria or algorithms to identify the system's operating status, potential problems or abnormal conditions. This process is usually automated and can provide a basis for the system's control decisions.

[0124] Here is a detailed description of the process:

[0125] 1) Preset of rule set

[0126] The rule set is set in advance by experts based on the characteristics of the system and historical data to evaluate the operating status of the device or system. The rule set usually consists of the following elements:

[0127] Threshold: Define the normal operating range for different system parameters. For example, for voltage, you can define a minimum and maximum value, and if it exceeds the range, it is considered abnormal.

[0128] Logical rules: include conditions and logical relationships, and define responses under different states. For example, "if the device temperature exceeds 80°C and lasts for more than 5 minutes, it is considered to be in a warning state."

[0129] Time window: Some rules may involve analyzing data over a period of time to detect trending issues. For example, voltage fluctuations more than 10 times within one minute are considered unstable.

[0130] 2) Collection of status information

[0131] The status information collected from the system or device usually includes the following types of data:

[0132] Real-time data: such as voltage, current, frequency, temperature and other physical quantities.

[0133] Equipment status data: such as equipment operating status, switch status, fault code, etc.

[0134] Historical data: System operation records over a period of time in the past, used to analyze trends and make more accurate judgments.

[0135] Environmental data: such as external temperature, humidity, grid load conditions, etc. These data may also affect the operating status of the system.

[0136] 3) Matching analysis process

[0137] The matching analysis process can be divided into several key steps:

[0138] Data preprocessing, including:

[0139] Data cleaning: Process the collected status information, remove noise data or invalid data, and ensure that the data input into the rule set is valid.

[0140] Data conversion: Standardize data from different sources and in different formats. For example, convert parameters in different units such as temperature and pressure into the same standard to facilitate rule matching.

[0141] Rule matching, including:

[0142] Single parameter matching: Compare the collected single parameter with the threshold or range defined in the rule set. If the parameter exceeds the range, an early warning or alarm will be triggered.

[0143] Multi-parameter matching: In many cases, the fluctuation of a single parameter is not sufficient to determine whether the system is abnormal. The system will conduct a combined analysis of multiple parameters.

[0144] Analysis of the time dimension, including:

[0145] Some state judgments need to be based on data over a period of time rather than instantaneous values. For example, voltage fluctuations over a short period of time may be normal, but if the voltage fluctuations are frequent and last for more than one minute, the system will judge it as an unstable state. At this time, the time window rule in the rule set will be triggered.

[0146] Dynamic adjustment and self-learning, including:

[0147] As the system runs for a long time, the thresholds and matching conditions in the rule set can be dynamically adjusted based on historical data and trends. For example, if it is found that the device is near the critical value for a long time without any problems, the system can automatically adjust the threshold to avoid frequent false alarms.

[0148] At the same time, it can be combined with machine learning technology to train models based on historical data and automatically optimize the rule set to make it more adaptable.

[0149] 4) Output and decision of matching results

[0150] The results of matching analysis can usually be divided into the following categories:

[0151] Normal state: All parameters are within the preset range, the system determines that the current state is normal and maintains the existing operation strategy.

[0152] Warning status: Some parameters are close to critical values ​​but within the allowable range. The system may enter observation mode or reduce equipment load to take advance measures.

[0153] Alarm status: When certain key parameters exceed the preset safety range, the system decides whether to switch to the backup device, reduce the load, or directly shut down for protection based on the logic in the rule set.

[0154] Trend analysis: Based on historical data, the system can output the operating trend for a period of time in the future. For example, if a parameter gradually increases, the system may predict that it will exceed the standard in the next few hours and take measures in advance.

[0155] In the flexible DC transmission system, the control and protection devices need to perform real-time monitoring and matching analysis on a large amount of status information.

[0156] 6.Maintenance and optimization of rule sets

[0157] The preset rule set needs to be regularly checked and optimized based on the system's operating conditions. For example, new equipment or environmental conditions may require threshold adjustments; as equipment ages and the probability of failure increases, the rule set may need to introduce more early warning mechanisms.

[0158] By matching and analyzing the received status information with the preset rule set, the system can quickly and accurately judge the status, predict faults or abnormal conditions in advance, and make corresponding decisions based on the matching results. This process can improve the stability of the system, reduce the occurrence of faults, and ensure that the system can switch to the backup device or take other protective measures in time when a fault occurs.

[0159] 7. Remote control operation associated with virtual synthesis device

[0160] In the remote control function of the human-machine interface, the remote control operation is associated with the virtual synthetic device. When the operator issues a remote control command, the system will automatically select the device in the duty state for remote control operation according to the value of the duty state field, or perform remote control operation of synthetic data through the virtual synthetic device. In this way, the operator does not need to care about the specific status of the dual control and protection devices, and only needs to issue remote control commands to achieve control of the system.

[0161] 8. Testing and Optimization

[0162] The above implementation methods are tested and optimized to ensure the stability and reliability of the system. Through actual testing and verification, the system is continuously improved and optimized to improve its performance and efficiency.

[0163] Through the above specific implementation methods, a virtual synthesis device and a synthetic data processing method of a dual set of control and protection devices based on duty status judgment can be effectively realized, the system structure can be simplified, the response speed and reliability of the system can be improved, and a new solution can be provided for the technical development and application in the field of flexible DC control and protection devices.

[0164] The implementation of the present invention can significantly improve the efficiency and reliability of the dual-set configuration of the flexible DC control and protection device. By expanding the switch knife model, establishing a virtual synthetic device data model, adding a service program for judging the duty status, and associating the remote control operation with the virtual synthetic device, the automatic judgment and remote control operation of the duty and standby status of the dual-set control and protection device are realized. This not only simplifies the operation process and reduces the possibility of human error, but also improves the automation level and response speed of the system. At the same time, the present invention also has the advantages of simple structure, easy implementation, low cost, etc., and has broad application prospects and market value.

[0165] The present invention improves the efficiency and reliability of the dual configuration of flexible DC control and protection devices: by expanding the switch knife model to incorporate visual indications of the duty status, constructing a virtual synthetic device data model that is consistent with the data of the dual control and protection devices, and adding a service program for automatically judging the duty status; the present invention realizes accurate and real-time judgment of the duty and standby status of the dual control and protection devices, and successfully integrates remote control operation with the virtual synthetic device, which not only simplifies the operating process and significantly reduces the risk of human operating errors, but also greatly improves the automation level and response speed of the system.

[0166] The present invention provides a new solution for the technological progress and application expansion in the field of flexible DC control and protection devices by virtue of its reasonable structural design, convenient implementation and significant cost-effectiveness, showing broad application prospects and huge market potential.

[0167] Embodiment 3

[0168] Figure 7 This is a flow chart of a data processing method for a virtual synthesis device of a dual set of control and protection devices according to an embodiment of the present invention. Figure 7 As shown, according to an embodiment of the present invention, a data processing method for a dual-set control and protection device virtual synthesis device is applied to any dual-set control and protection device virtual synthesis device of the present invention, and the method comprises the following steps:

[0169] Step S102, obtaining data from two sets of control and protection devices, and processing the data to obtain synthetic data;

[0170] Step S104, automatically determining the duty status of the dual-set control and protection devices based on the information of the dual-set control and protection devices, and storing the duty status in the duty status field of the switch knife switch model;

[0171] Step S106, obtaining a remote control instruction, and performing remote control operation on the control and protection device in the duty state based on the remote control instruction and the duty state.

[0172] In this embodiment, the data processing method of the virtual synthesis device of the dual-set control and protection device is mainly applied to the virtual synthesis device of the dual-set control and protection device of the present invention; the entire processing flow is divided into three core steps: first, the system will collect data from the dual-set control and protection device, and perform a series of processing on the data to generate synthetic data, which is the basis for subsequent operations; secondly, based on the specific information of the dual-set control and protection device, the system will automatically determine the duty status of each set of devices, and accurately store this status information in the duty status field of the corresponding switch model, so that subsequent operations can accurately identify the current duty equipment; finally, the system will receive remote control instructions, and according to the instruction content and the previously determined and stored duty status, perform corresponding remote control operations on the control and protection device in the duty state to ensure the safe and stable operation of the power grid.

[0173] The present invention realizes efficient virtual synthesis and precise control of dual sets of control and protection devices through automated and intelligent data processing and status judgment, which can not only improve the reliability and safety of power grid operation, but also simplify the operation process, reduce manual intervention, and improve the intelligent level of power grid operation and maintenance. The present invention ensures the accuracy of remote control operation by updating duty status information in real time, effectively avoids power grid accidents caused by misoperation, and provides a strong guarantee for the safe and stable operation of the power grid.

[0174] Embodiment 4

[0175] A data processing method for a virtual synthesis device of a dual set of control and protection devices comprises the following steps:

[0176] By extending the duty status field of the switch model, the duty status and standby status of the dual sets of control and protection devices can be identified in real time;

[0177] Establish a virtual synthetic device data model that is consistent with the dual-set control and protection device data model, including the duty status field and synthetic logic module;

[0178] The service program for judging the duty status receives the status information of the dual control and protection devices, the system operation data and other relevant parameters in real time, judges the duty status of the dual control and protection devices, and stores the judgment result in the duty status field;

[0179] In the human-machine interface, the remote control function is associated with the virtual synthesis device, and according to the value of the duty status field, the control and protection device in the duty state is automatically selected for remote control operation, or the remote control operation of the synthesis data is performed through the virtual synthesis device;

[0180] The synthesis logic module generates synthetic data through a preset synthesis algorithm according to the real-time data of the dual sets of control and protection devices, and outputs the synthetic data to the corresponding control actuator to realize the control and protection of the flexible DC transmission system.

[0181] Preferably, when the service program for judging the duty status detects that the device in the duty status fails, it automatically switches to the control and protection device in the standby status, or performs remote control operation of the synthesized data through a virtual synthesis device to ensure the continuous operation of the system.

[0182] In this implementation, the status information of the two sets of control and protection devices is collected in real time through the service program; the collected status information is matched with the preset rule set; based on the matching result, it is automatically determined which set of devices meets the duty status conditions; the judgment result is stored in the duty status field, the value of the duty status field is updated to reflect the determined duty status, and synchronized to the human-machine interface; when it is determined that the duty control and protection device has changed, the updated duty status information is displayed to the operator, a notification is sent to the operator, and relevant logs are recorded.

[0183] The present invention realizes real-time identification and intelligent management of the duty status and standby status of the dual-set control and protection devices by extending the duty status field of the switch knife model and establishing a virtual synthetic device data model consistent with the dual-set control and protection device data model; the present invention has the following significant technical effects:

[0184] Improve system reliability: Through multi-dimensional judgment and dynamic adjustment mechanism, the duty status of the dual sets of control and protection devices can be accurately and timely judged, and automatically switch to the backup device when a fault is detected in the duty status device, ensuring the continuous operation of the system and effectively improving the reliability and stability of the power grid.

[0185] Intelligent equipment scheduling: not only pays attention to the status of a single device, but also considers the overall coordination of the two sets of control and protection devices. Through intelligent synthesis and decision-making logic, it automatically selects the optimal control and protection device for remote control operation, reducing the possibility of human error and improving the system's degree of automation and response speed.

[0186] Fault prediction and prevention: Introducing intelligent algorithms such as machine learning to predict equipment failure risks in advance and conduct proactive scheduling, effectively avoiding power grid accidents caused by equipment failures and further improving the safety and reliability of the system.

[0187] Simplify the operation process: associate the remote control operation function with the virtual synthetic device, and automatically select the control and protection device for remote control operation according to the value of the duty status field, which simplifies the operation process and reduces the operation difficulty and workload of operation and maintenance personnel.

[0188] Strong applicability: This method is suitable for the dual-set configuration scenario of control and protection devices in the flexible DC transmission system, and can also be promoted and applied to other power systems that require dual or multiple sets of equipment configuration. It has broad application prospects and practical value.

[0189] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the method described above can refer to the corresponding process in the aforementioned virtual synthesis device embodiment, and will not be repeated here.

[0190] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

[0191] It should be understood that the size of the serial numbers of each step in the content of the invention and the embodiments of the present invention does not absolutely mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

Claims

1. A dual-set control and protection device virtual synthesis device, comprising a first control and protection device and a second control and protection device, characterized in that: The virtual synthesis device also includes: A data processing module is used to obtain data from the dual sets of control and protection devices and process the data to obtain synthetic data; A duty status judgment module, used for automatically judging the duty status of the dual-set control and protection devices based on the information of the dual-set control and protection devices, and storing the duty status in the duty status field of the switch knife switch model; The remote control operation association module is used to obtain remote control instructions, and perform remote control operations on the control and protection device in the duty state based on the remote control instructions and the duty state.

2. The dual-set control and protection device virtual synthesis device according to claim 1 is characterized in that: The duty status field is used to identify in real time whether the control and protection device is currently in a duty state or a standby state.

3. The dual-set control and protection device virtual synthesis device according to claim 1 is characterized in that: The duty status field is displayed on the human-computer interaction interface in a visual manner.

4. The dual-set control and protection device virtual synthesis device according to claim 3 is characterized in that: The visualization method includes at least one of the following: a status indicator light and a color code.

5. The dual-set control and protection device virtual synthesis device according to claim 1, characterized in that: The data structure stored in the data processing module is consistent with the data structure stored in the dual sets of control and protection devices.

6. The dual-set control and protection device virtual synthesis device according to claim 1, characterized in that: Automatically determine the duty status of the dual control and protection devices based on the information of the dual control and protection devices, including: Acquire the status information of the first security control device and the second security control device in real time, Based on the status information and preset rules, the control and protection devices in the duty state are judged; the preset rules are pre-set by experts according to the characteristics of the system and historical data, and are used to evaluate the operating status of the equipment or system.

7. The dual-set control and protection device virtual synthesis device according to claim 6 is characterized in that: The status information includes: working status, fault status, and performance parameters.

8. The dual-set control and protection device virtual synthesis device according to claim 7 is characterized in that: The preset rules include: Determine a duty status determination mode of the virtual synthesis device; When the virtual synthesis device is in the DCB duty status judgment mode, it is judged whether the communication status of the first control and protection device and the second control and protection device is normal; if the communication status of one of the control and protection devices is abnormal, the control and protection device with normal communication status is set to be in the duty status; if the communication status of both control and protection devices is normal, the duty status of the control and protection devices is read, and the control and protection device in the duty status is kept in the duty status; When the virtual synthesis device is in the SAC self-judgment mode, determine whether the communication status of the first control and protection device and the second control and protection device is normal; if the communication status of one of the control and protection devices is abnormal, set the control and protection device with normal communication status to be on duty; if the communication status of both sets of control and protection devices is normal, determine whether the health status of both sets of control and protection devices is normal; if the health status of one of the control and protection devices is abnormal, set the control and protection device with normal health status to be on duty; if the health status of both sets of control and protection devices is normal, set the first control and protection device to be on duty.

9. The dual-set control and protection device virtual synthesis device according to claim 7, characterized in that: The method comprises: determining the control and protection device in the duty state based on the duty state field value of the dual sets of control and protection devices, and the user remotely controls the control and protection device in the duty state based on the remote control command; or, The user does not distinguish the control and security devices in the duty state and directly sends the remote control instruction to the virtual synthesis device, and the virtual synthesis device directly remotely controls the control and security devices in the duty state.

10. A data processing method for a dual-set control and protection device virtual synthesis device, applied to the dual-set control and protection device virtual synthesis device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Obtain data from two sets of control and protection devices, and process the data to obtain synthetic data; Automatically determine the duty status of the dual-set control and protection devices based on the information of the dual-set control and protection devices, and store the duty status in the duty status field of the switch knife switch model; A remote control instruction is obtained, and based on the remote control instruction and the duty status, a remote control operation is performed on the control and protection device in the duty status.

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