Rotor one-point grounding protection control method and related device

Abstract

The invention discloses a control method, a control device, control equipment and a computer readable storage medium for rotor one-point grounding protection, and the method comprises the steps: setting a first set of protection device and a second set of protection device to be in an open state, and setting the first set of protection device to be in a running state; acquiring operation parameters of the first set of protection device and operation parameters of the second set of protection device; wherein the operation parameters comprise a resistance value to ground of a rotor, action time of a protection device and a communication state of the protection device; judging whether the first set of protection device or the second set of protection device is in an abnormal state or not based on the operation parameters; if yes, a protection device switching instruction is sent according to the operation parameters of the first protection device and the operation parameters of the second protection device, and switching process data are recorded. According to the device, one-point grounding protection automatic switching of the phase modifier rotor is realized, and the reliability and the safety of equipment operation are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power equipment, and more specifically, relates to a control method, a control device, a control equipment, and a computer-readable storage medium for rotor single-point grounding protection. Background Art

[0002] Phase regulators are important equipment in power systems, and their rotor single-point grounding protection is crucial to the safe operation of the equipment. According to relevant regulations, phase regulators need to be equipped with two sets of rotor single-point grounding protection devices, but only one set of protection is allowed to be put into operation during normal operation. Normally, protection 1 is selected for operation; when protection 1 cannot operate normally, it is necessary to switch to protection 2; if both protection 1 and protection 2 cannot operate normally, the protected equipment needs to be shut down. In order to reduce the possibility of phase regulator shutdown, it is necessary to ensure that at least one of protection 1 and protection 2 can operate normally as much as possible.

[0003] In the related art, the main problem with the phase-converter rotor single-point grounding protection device is that the two sets of protection devices cannot be switched automatically. When an abnormality occurs in one of the protection devices in operation, the protection device cannot be quickly removed; even if the other set of protection devices is in good condition, it cannot be quickly put into operation. In this case, if the faulty protection device cannot be removed in time, the accident may expand, posing a hidden danger to the safe operation of the power system.

[0004] Therefore, how to realize the automatic switching of the phase regulator rotor single-point grounding protection device and improve the reliability and safety of equipment operation is a key issue that technical personnel in this field are concerned about. Summary of the invention

[0005] The purpose of the present application is to provide a control method, a control device, a control equipment, and a computer-readable storage medium for rotor single-point grounding protection, so as to realize a device for automatic switching of phase-converter rotor single-point grounding protection and improve the reliability and safety of equipment operation.

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a control method for rotor single-point grounding protection, comprising:

[0007] Setting both the first set of protection devices and the second set of protection devices to an on state, and setting the first set of protection devices to an operating state;

[0008] Obtaining operating parameters of the first set of protection devices and operating parameters of the second set of protection devices; wherein the operating parameters include: rotor-to-ground resistance value, action time of the protection device, and communication status of the protection device;

[0009] Determining whether the first set of protection devices or the second set of protection devices is in an abnormal state based on the operating parameters;

[0010] If so, a protection device switching instruction is sent according to the operating parameters of the first protection device and the operating parameters of the second protection device, and the switching process data is recorded.

[0011] Optionally, sending a protection device switching instruction according to an operating parameter of the first protection device and an operating parameter of the second protection device includes:

[0012] When the first protection device is abnormal, switching to the second protection device for operation;

[0013] When the second protection device is abnormal, sending a protection device maintenance message;

[0014] When both the first protection device and the second protection device are abnormal, a protection device alarm message is sent.

[0015] Optionally, also include:

[0016] Classify the abnormality of the first protection device and the abnormality of the second protection device according to the operating parameters to obtain abnormality levels; wherein the abnormality levels include: communication abnormality, measurement abnormality, and protection action abnormality;

[0017] Different switching delay times are set according to the abnormality level; when a communication abnormality occurs, a first delay time is set; when a measurement abnormality occurs, a second delay time is set; when a protection action abnormality occurs, a third delay time is set; the first delay time is greater than the second delay time and greater than the third delay time.

[0018] Optionally, obtaining the operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices includes:

[0019] The operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices are obtained through sensors.

[0020] Optionally, also include:

[0021] Establishing an automatic switching database, and recording the switching process data in the automatic switching database;

[0022] Monitor the working environment parameters of the protection device;

[0023] An abnormality prediction is performed based on the switching process data and the working environment parameters to obtain a prediction result.

[0024] The prediction result is sent to a preset terminal.

[0025] The present application also provides a control device for rotor single-point grounding protection, comprising:

[0026] A state-on module, used to set both the first set of protection devices and the second set of protection devices to an on state, and to set the first set of protection devices to an operating state;

[0027] An operating parameter acquisition module, used to acquire the operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices; wherein the operating parameters include: rotor-to-ground resistance value, action time of the protection device, and communication status of the protection device;

[0028] an abnormal judgment module, used for judging whether the first set of protection devices or the second set of protection devices is in an abnormal state based on the operating parameters;

[0029] The protection device switching module is used to send a protection device switching instruction according to the operating parameters of the first protection device and the operating parameters of the second protection device when an abnormal state occurs, and record the switching process data.

[0030] Optionally, the protection device switching module is specifically used to switch to the second protection device when an abnormality occurs in the first protection device; to send a protection device maintenance message when an abnormality occurs in the second protection device; and to send a protection device alarm message when abnormalities occur in both the first protection device and the second protection device.

[0031] Optionally, also include:

[0032] An abnormality classification module is used to classify the abnormalities of the first protection device and the second protection device according to the operating parameters to obtain abnormality levels; wherein the abnormality levels include: communication abnormality, measurement abnormality, and protection action abnormality; different switching delay times are set according to the abnormality levels; wherein, when a communication abnormality occurs, a first delay time is set; when a measurement abnormality occurs, a second delay time is set; when a protection action abnormality occurs, a third delay time is set; wherein, the first delay time is greater than the second delay time and greater than the third delay time.

[0033] The present application also provides a control device, comprising:

[0034] Memory for storing computer programs;

[0035] A processor is used to implement the steps of the control method described above when executing the computer program.

[0036] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the control method described above are implemented.

[0037] The present application provides a control method for single-point grounding protection of a rotor, comprising: setting both a first set of protection devices and a second set of protection devices to an on state, and setting the first set of protection devices to an operating state; obtaining operating parameters of the first set of protection devices and the second set of protection devices; wherein the operating parameters include: rotor-to-ground resistance value, action time of the protection device, and communication status of the protection device; judging whether the first set of protection devices or the second set of protection devices is in an abnormal state based on the operating parameters; if so, sending a protection device switching instruction according to the operating parameters of the first protection device and the operating parameters of the second protection device, and recording the switching process data.

[0038] It has the following beneficial effects:

[0039] By keeping both protection devices in the started state and monitoring the operating status of the protection devices in real time, the protection devices can be quickly switched when an abnormality occurs, which can minimize the time when the phase regulator loses protection due to failure of the protection device, reduce the risk of equipment damage, and realize automatic switching of the phase regulator rotor single-point grounding protection device, thereby improving the reliability and safety of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0041] Figure 1 A flow chart of a control method for rotor single-point grounding protection provided in an embodiment of the present application;

[0042] Figure 2 A schematic diagram of the structure of a control device for rotor single-point grounding protection provided in an embodiment of the present application;

[0043] Figure 3 A schematic diagram of the structure of the control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] The purpose of the present application is to provide a control method, a control device, a control equipment, and a computer-readable storage medium for rotor single-point grounding protection, so as to realize a device for automatic switching of phase-converter rotor single-point grounding protection and improve the reliability and safety of equipment operation.

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] A control method for rotor single-point grounding protection provided by the present application is described below through an embodiment.

[0047] Please refer to Figure 1 , Figure 1 A flow chart of a control method for rotor single-point ground fault protection provided in an embodiment of the present application.

[0048] In this embodiment, the method may include:

[0049] S101, setting both the first set of protection devices and the second set of protection devices to an open state, and setting the first set of protection devices to an operating state;

[0050] In this step, in order to achieve the coordinated work of the two sets of protection devices and ensure that when one set of protection devices has a problem, the other set can take over in time, it is necessary to prepare them both first, with one set in operation to undertake the main protection task and the other set in standby status to be on standby at any time.

[0051] When the phase regulator system is started or initialized, the power supply of the first and second protection devices is turned on or the relevant program is started through the control circuit or software instruction to make them enter the open state. Then, the operation flag or control signal of the first protection device is set separately to make it start to perform the monitoring and protection function of the rotor grounding condition, while the second protection device is in a waiting state and does not take active protection action, but maintains the ability to monitor its own operating parameters.

[0052] The setting method in this step enables the system to have redundant protection capabilities and improves the overall reliability. Once the first set of protection devices in operation fails, the second set of protection devices can be put into use quickly, reducing the possibility of the expansion of phase-converter rotor failures due to the failure of the protection devices and ensuring the stable operation of the power system.

[0053] S102, obtaining operating parameters of the first set of protection devices and operating parameters of the second set of protection devices; wherein the operating parameters include: rotor-to-ground resistance value, action time of the protection device, and communication status of the protection device;

[0054] Based on S101, this step determines whether the protection device is working properly, and it is necessary to obtain key data that can reflect its working status, which are operating parameters. The rotor-to-ground resistance value is directly related to whether there is a risk of ground fault in the rotor. The action time of the protection device can reflect whether its response speed to the fault meets the requirements. The communication status determines whether the protection device can normally exchange information with other related equipment, such as sending fault alarm information in time or receiving control instructions.

[0055] In this step, the rotor-to-ground resistance value is obtained by installing a sensor inside the protection device or in a circuit related to the rotor. The sensor converts the resistance value into an electrical signal and transmits it to the control unit. For the action time of the protection device, the built-in timer can be used to record the time from detecting the fault signal to issuing the protection action command. The monitoring of the communication status is achieved through the communication interface circuit and communication protocol. The protection device continuously sends and receives test data packets, and determines whether the communication is normal based on the transmission and response of the data packets, such as whether there is packet loss, excessive delay, etc.

[0056] It can be seen that the comprehensive and accurate acquisition of operating parameters in this step provides a reliable basis for the subsequent judgment of the working status of the protection device. Timely detection of abnormal resistance values ​​can prevent rotor grounding faults in advance, reasonable action time can ensure the timeliness of protection, and good communication status can help realize remote monitoring and collaborative work between systems, thereby improving the intelligent management level and safety of the entire power system.

[0057] S103, judging whether the first set of protection devices or the second set of protection devices is in an abnormal state based on the operating parameters;

[0058] Based on S102, this step compares the acquired operating parameters with the pre-set normal parameter range or standard. If the parameters deviate from the normal range, it may mean that there is a problem with the protection device and it is in an abnormal state. For example, if the rotor-to-ground resistance value is lower than the normal threshold, it may indicate that there is a grounding hazard in the rotor; if the action time of the protection device is too long or too short, it may be that its internal circuit or algorithm is faulty; poor communication status may result in the inability to transmit control instructions or report fault information, etc.

[0059] In this step, the normal range of the rotor-to-ground resistance value is set in the control device or software, such as 100kΩ-10MΩ (the specific value depends on the parameters of the phase-shifting device). When the obtained resistance value is lower than 100kΩ or higher than 10MΩ, it is judged to be abnormal. For the action time, set a reasonable time interval, such as 10ms-100ms (also based on the equipment requirements). Exceeding this interval is considered abnormal. The communication status is judged based on indicators such as the packet loss rate and delay time specified in the communication protocol. If the packet loss rate exceeds 5% or the delay time exceeds 100ms, it is considered a communication abnormality. These parameters are compared and analyzed one by one through a logical judgment circuit or software algorithm to determine whether the protection device is abnormal.

[0060] It can be seen that this step accurately determines the abnormal state of the protection device, which can timely discover potential risks and avoid further development of faults. For example, when the rotor grounding resistance value has just become abnormal but has not yet caused a serious fault, it can be detected and measures can be taken to prevent the grounding fault from expanding and causing equipment damage. Timely detection of abnormal action time can avoid adverse effects on the operation of the phase regulator due to untimely protection or malfunction, and ensure stable power supply of the power system.

[0061] S104: If yes, send a protection device switching instruction according to the operating parameters of the first protection device and the operating parameters of the second protection device, and record the switching process data.

[0062] Based on S103, when this step finds that the protection device is in an abnormal state, in order to ensure the continuous protection of the phase regulator, it is necessary to switch or issue a corresponding notification according to the situation. If the first set of protection devices is abnormal, switch to the second set of protection devices to ensure that the protection function is not interrupted; if the second set of protection devices is abnormal, notify the maintenance personnel to carry out maintenance; if both sets are abnormal, send an alarm signal to remind the operator to take emergency measures, and record the switching process data for subsequent analysis of the cause of the fault and optimization of the system.

[0063] In this step, when it is determined that the first set of protection devices is abnormal, the operating state is switched to the second set of protection devices through the control circuit or software instructions, including switching the power supply, signal transmission channel, etc., so that the second set of protection devices begins to assume the protection task of single-point grounding of the rotor. If the second set of protection devices is abnormal, a maintenance message is sent to the terminal of the monitoring center or the maintenance personnel through the communication interface, and the message contains information such as the abnormal type and related parameters. If both sets are abnormal, the alarm device (such as an audible and visual alarm) is triggered to send an alarm signal, and the alarm information is sent to the relevant monitoring system. During the entire switching process, the data recording module is used to record data such as switching time, abnormal parameter values, and the status of the protection device before and after switching, and store them in the local storage or upload them to the remote server.

[0064] It can be seen that the rapid switching of the protection device in this step can minimize the time when the phase regulator loses protection due to the failure of the protection device and reduce the risk of equipment damage. Timely notification of maintenance personnel for maintenance can improve the availability of equipment and reduce downtime. The alarm information can enable operators to know the serious fault situation in time and take emergency response measures, such as shutdown inspection, to ensure the safety of the power system. The recorded switching process data provides detailed information for fault analysis, which helps to improve the performance and reliability of the protection system.

[0065] In summary, this embodiment keeps both protection devices in the started state and monitors the operating status of the protection devices in real time. When an abnormality occurs, the protection devices can be quickly switched, which can minimize the time when the phase regulator loses protection due to a failure of the protection device, reduce the risk of equipment damage, and realize automatic switching of the phase regulator rotor single-point grounding protection device, thereby improving the reliability and safety of equipment operation.

[0066] Optionally, sending a protection device switching instruction according to an operating parameter of the first protection device and an operating parameter of the second protection device includes:

[0067] Step 1: When the first protection device is abnormal, switch to the second protection device for operation;

[0068] Step 2: When an abnormality occurs in the second protection device, a protection device maintenance message is sent;

[0069] Step 3: When both the first protection device and the second protection device are abnormal, a protection device alarm message is sent.

[0070] In this optional solution, when the subsequent operation needs to be determined based on the operating parameters of the first protection device and the second protection device, different response strategies are formulated according to the abnormal situations of different protection devices. The principle is to ensure that when the protection device is abnormal, the most reasonable measures can be taken to maintain the effectiveness of the phase-converter rotor single-point grounding protection, so as to avoid equipment failure caused by protection failure due to abnormal conditions.

[0071] It achieves accurate response according to different abnormal situations. When the first protection device is abnormal, it switches to the second protection device, ensuring the continuity of the protection function, effectively reducing the risk of the phase-converter rotor grounding fault not being protected in time due to the failure of the protection device, and improving the reliability of the system. When the second protection device is abnormal, a maintenance message is sent, which helps to timely discover and solve potential problems, reduce equipment downtime, and improve equipment availability. When both sets of protection devices are abnormal, an alarm message is sent, which allows operators to quickly know the serious fault situation, take emergency measures to avoid the expansion of the accident, and ensure the safe and stable operation of the power system.

[0072] Optionally, also include:

[0073] Step 1: classify the abnormality of the first protection device and the abnormality of the second protection device according to the operating parameters to obtain abnormality levels; wherein the abnormality levels include: communication abnormality, measurement abnormality, and protection action abnormality;

[0074] Step 2, setting different switching delay times according to the abnormality level; when a communication abnormality occurs, set it to the first delay time; when a measurement abnormality occurs, set the second delay time; when a protection action abnormality occurs, set the third delay time; wherein the first delay time is greater than the second delay time and greater than the third delay time.

[0075] In this optional solution, by classifying the abnormal conditions of the protection device, different switching delay times are set according to the severity and impact range of different types of abnormalities. The principle is to avoid frequent switching of the protection device due to short-term abnormal fluctuations or non-critical abnormalities while ensuring the timely response of the protection function, thereby improving the stability and reliability of the system. For example, communication abnormalities may only be short-term signal interference, which may not immediately affect the realization of the protection function; while protection action abnormalities may be directly related to the safety of the phase regulator, requiring faster switching.

[0076] In this optional solution, the type of abnormality is determined based on the communication status, measurement data (such as rotor-to-ground resistance measurement) and protection action in the operating parameters. When it is determined to be a communication abnormality, a first delay time is set in the control program or hardware circuit, such as 5 seconds (the specific value can be adjusted according to the actual situation), and the communication status is continuously monitored during this period. If the communication returns to normal within the delay time, no switching is performed; if it is still not restored after the timeout, the corresponding switching or notification operation is performed. For measurement abnormalities, a second delay time is set, such as 2 seconds. Also, during the delay period, observe whether the measurement data returns to normal. If the abnormality persists, it is processed. When a protection action abnormality occurs, a third delay time is set, such as immediate switching, quickly switching the protection device or taking emergency measures, because the protection action abnormality poses a greater threat to equipment safety. The setting of these delay times can be achieved through a timer circuit or the timing function in the software.

[0077] In this optional solution, the stability and adaptability of the system are improved. Reasonable delay settings avoid unnecessary switching due to short-term abnormalities and reduce interference with the normal operation of the system. At the same time, different delay strategies are adopted for abnormalities of different severity, ensuring rapid response when critical abnormalities occur, ensuring the safe operation of the phase regulator, extending the service life of the protection device, and reducing maintenance costs.

[0078] Optionally, obtaining the operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices includes:

[0079] The operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices are obtained through sensors.

[0080] In this optional solution, in order to obtain the operating parameters of the protection device, it is necessary to use sensors to measure physical quantities and convert signals. The sensor can convert physical parameters such as the rotor-to-ground resistance value and the protection device action time into electrical signals so that the control device or system can recognize and process this information, thereby realizing the monitoring and control of the operating status of the protection device.

[0081] In this optional solution, for the measurement of the rotor-to-ground resistance value, a high-precision resistance sensor or insulation resistance monitor is used, which is installed in the rotor grounding loop. The sensor monitors the change of the resistance value in real time, and converts it into a voltage or current signal, which is transmitted to the control unit. The action time of the protection device can be obtained by setting a timer circuit in the control circuit inside the protection device. When a fault signal is detected to trigger the protection action, the timer starts timing. When the protection action is completed (such as the relay action is completed), the timer stops timing and converts the timing result into a digital signal and transmits it to the control unit. Data is transmitted between the sensor and the control unit through wired (such as shielded cable) or wireless (such as Bluetooth, ZigBee and other wireless communication modules, selected according to the actual application scenario) communication methods.

[0082] In this optional solution, accurate acquisition of operating parameters is the key to the entire control method. Sensors can monitor the operating status of the protection device in real time and accurately, providing reliable data support for subsequent judgment and control. This helps to promptly discover potential problems with the protection device, improves the reliability and effectiveness of the protection system, ensures that the phase regulator operates in a safe state, and also facilitates the maintenance and management of the equipment.

[0083] Optionally, also include:

[0084] Step 1, establish an automatic switching database, and record the switching process data in the automatic switching database;

[0085] Step 2, monitoring the working environment parameters of the protection device;

[0086] Step 3: Perform abnormal prediction based on the switching process data and working environment parameters to obtain the prediction result.

[0087] Step 4: Send the prediction result to the preset terminal.

[0088] In this optional solution, an automatic switching database is established to store the switching process data so that the operation of the protection device can be analyzed and evaluated later. The working environment parameters of the protection device (such as temperature, humidity, electromagnetic interference, etc.) are monitored because these environmental factors may affect the performance and reliability of the protection device. Combining them with the switching process data can comprehensively determine the cause of the abnormality of the protection device and predict possible problems in the future. Through data analysis and processing, the abnormality of the protection device can be predicted, and measures can be taken in advance to avoid failures.

[0089] In this optional solution, a database management system is configured in the control device or system to create an automatic switching database. When the protection device switches, the switching time, the state of the protection device before switching, the state of the protection device after switching, abnormal parameters and other data are recorded in the database. Environmental monitoring equipment such as temperature sensors, humidity sensors, and electromagnetic interference monitors are installed near the protection device to obtain the working environment parameters in real time and transmit them to the control unit. The control unit uses a data analysis algorithm (such as regression analysis and classification algorithms in machine learning algorithms) to conduct a comprehensive analysis of the switching process data and working environment parameters to establish an abnormality prediction model. When a possible abnormality is predicted, the prediction result is sent to a preset terminal (such as a computer in the monitoring center, a maintenance personnel's mobile phone, etc.) through a communication interface, and notification can be made by SMS, email, or push notification of dedicated monitoring software.

[0090] In this optional solution, the automatic switching database provides a detailed record of the operating history of the protection device, which facilitates fault tracing and system performance analysis, and helps optimize protection strategies and system design. The monitoring of working environment parameters and the comprehensive analysis of switching data can detect potential risks in advance, implement preventive maintenance, reduce equipment downtime, and improve the reliability and economy of the power system. The transmission of prediction results enables maintenance personnel to take timely measures, which improves the initiative and timeliness of equipment maintenance.

[0091] A control device for rotor single-point ground fault protection provided in an embodiment of the present application is introduced below. The control device for rotor single-point ground fault protection and a control method for rotor single-point ground fault protection described below can refer to each other.

[0092] Please refer to Figure 2 , Figure 2 A schematic diagram of the structure of a control device for rotor single-point grounding protection provided in an embodiment of the present application.

[0093] In this embodiment, the device may include:

[0094] A state activation module 100, used to set both the first set of protection devices and the second set of protection devices to an activation state, and to set the first set of protection devices to an operating state;

[0095] The operating parameter acquisition module 200 is used to acquire the operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices; wherein the operating parameters include: the rotor-to-ground resistance value, the action time of the protection device, and the communication status of the protection device;

[0096] An abnormality determination module 300 is used to determine whether the first set of protection devices or the second set of protection devices is in an abnormal state based on the operating parameters;

[0097] The protection device switching module 400 is used to send a protection device switching instruction according to the operating parameters of the first protection device and the operating parameters of the second protection device when an abnormal state occurs, and record the switching process data.

[0098] Optionally, the protection device switching module 400 is specifically used to switch to the second protection device when an abnormality occurs in the first protection device; send a protection device maintenance message when an abnormality occurs in the second protection device; and send a protection device alarm message when an abnormality occurs in both the first protection device and the second protection device.

[0099] Optionally, also include:

[0100] The abnormality classification module is used to classify the abnormalities of the first protection device and the second protection device according to the operating parameters to obtain the abnormality level; wherein the abnormality level includes: communication abnormality, measurement abnormality, protection action abnormality; different switching delay times are set according to the abnormality level; wherein, when a communication abnormality occurs, it is set to the first delay time; when a measurement abnormality occurs, the second delay time is set; when a protection action abnormality occurs, the third delay time is set; wherein the first delay time is greater than the second delay time and greater than the third delay time.

[0101] This application also provides control equipment, please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a control device provided in an embodiment of the present application. The control device may include:

[0102] Memory for storing computer programs;

[0103] The processor is used to implement the steps of any one of the above-mentioned control methods for rotor single-point ground fault protection when executing a computer program.

[0104] like Figure 3 , which is a schematic diagram of the structure of the control device, the control device may include: a processor 10, a memory 11, a communication interface 12 and a communication bus 13. The processor 10, the memory 11 and the communication interface 12 communicate with each other through the communication bus 13.

[0105] In the embodiment of the present application, the processor 10 may be a central processing unit (CPU), an application specific integrated circuit, a digital signal processor, a field programmable gate array or other programmable logic devices.

[0106] The processor 10 may call a program stored in the memory 11. Specifically, the processor 10 may execute operations in an embodiment of the abnormal IP identification method.

[0107] The memory 11 is used to store one or more programs, which may include program codes, and the program codes include computer operation instructions. In the embodiment of the present application, the memory 11 at least stores programs for implementing the following functions:

[0108] Setting both the first set of protection devices and the second set of protection devices to an on state, and setting the first set of protection devices to an operating state;

[0109] Obtaining operating parameters of the first set of protection devices and operating parameters of the second set of protection devices; wherein the operating parameters include: rotor-to-ground resistance value, action time of the protection device, and communication status of the protection device;

[0110] Determine whether the first set of protection devices or the second set of protection devices is in an abnormal state based on the operating parameters;

[0111] If so, a protection device switching instruction is sent according to the operating parameters of the first protection device and the operating parameters of the second protection device, and the switching process data is recorded.

[0112] In a possible implementation, the memory 11 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function, etc.; the data storage area may store data created during use.

[0113] In addition, the memory 11 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device or other volatile solid-state storage device.

[0114] The communication interface 12 may be an interface of a communication module, and is used to connect to other devices or systems.

[0115] Of course, it should be noted that Figure 3 The structure shown does not constitute a limitation on the control device in the embodiment of the present application. In actual applications, the control device may include Figure 3 More or fewer components than shown, or combinations of certain components.

[0116] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of any of the above-mentioned control methods for single-point ground fault protection of a rotor can be implemented.

[0117] The computer-readable storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0118] For an introduction to the computer-readable storage medium provided in this application, please refer to the above method embodiment, and this application will not go into details here.

[0119] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0120] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0121] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0122] The above is a detailed introduction to a control method, control device, control equipment, and computer-readable storage medium for rotor single-point grounding protection provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A control method for rotor single-point grounding protection, characterized in that: include: Setting both the first set of protection devices and the second set of protection devices to an on state, and setting the first set of protection devices to an operating state; Obtaining operating parameters of the first set of protection devices and operating parameters of the second set of protection devices; wherein the operating parameters include: rotor-to-ground resistance value, action time of the protection device, and communication status of the protection device; Determining whether the first set of protection devices or the second set of protection devices is in an abnormal state based on the operating parameters; If so, a protection device switching instruction is sent according to the operating parameters of the first protection device and the operating parameters of the second protection device, and the switching process data is recorded.

2. The control method according to claim 1, characterized in that: Sending a protection device switching instruction according to the operating parameters of the first protection device and the operating parameters of the second protection device includes: When the first protection device is abnormal, switching to the second protection device for operation; When the second protection device is abnormal, sending a protection device maintenance message; When both the first protection device and the second protection device are abnormal, a protection device alarm message is sent.

3. The control method according to claim 1, characterized in that: Also includes: Classify the abnormality of the first protection device and the abnormality of the second protection device according to the operating parameters to obtain abnormality levels; wherein the abnormality levels include: communication abnormality, measurement abnormality, and protection action abnormality; Different switching delay times are set according to the abnormality level; when a communication abnormality occurs, a first delay time is set; when a measurement abnormality occurs, a second delay time is set; when a protection action abnormality occurs, a third delay time is set; the first delay time is greater than the second delay time and greater than the third delay time.

4. The control method according to claim 1, characterized in that: Obtaining the operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices includes: The operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices are obtained through sensors.

5. The control method according to claim 1, characterized in that: Also includes: Establishing an automatic switching database, and recording the switching process data in the automatic switching database; Monitor the working environment parameters of the protection device; Perform abnormality prediction based on the switching process data and the working environment parameters to obtain a prediction result; The prediction result is sent to a preset terminal.

6. A control device for rotor single-point grounding protection, characterized in that: include: A state-on module, used to set both the first set of protection devices and the second set of protection devices to an on state, and to set the first set of protection devices to an operating state; An operating parameter acquisition module, used to acquire the operating parameters of the first set of protection devices and the operating parameters of the second set of protection devices; wherein the operating parameters include: rotor-to-ground resistance value, action time of the protection device, and communication status of the protection device; an abnormal judgment module, used for judging whether the first set of protection devices or the second set of protection devices is in an abnormal state based on the operating parameters; The protection device switching module is used to send a protection device switching instruction according to the operating parameters of the first protection device and the operating parameters of the second protection device when an abnormal state occurs, and record the switching process data.

7. The control device according to claim 6, characterized in that: The protection device switching module is specifically used to switch to the second protection device when an abnormality occurs in the first protection device; to send a protection device maintenance message when an abnormality occurs in the second protection device; and to send a protection device alarm message when an abnormality occurs in both the first protection device and the second protection device.

8. The control device according to claim 7, characterized in that: Also includes: An abnormality classification module is used to classify the abnormalities of the first protection device and the second protection device according to the operating parameters to obtain abnormality levels; wherein the abnormality levels include: communication abnormality, measurement abnormality, and protection action abnormality; different switching delay times are set according to the abnormality levels; wherein, when a communication abnormality occurs, a first delay time is set; when a measurement abnormality occurs, a second delay time is set; when a protection action abnormality occurs, a third delay time is set; wherein, the first delay time is greater than the second delay time and greater than the third delay time.

9. A control device, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the steps of the control method according to any one of claims 1 to 5 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the control method according to any one of claims 1 to 5 are implemented.

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