Direct-current line protection action recognition method and device, computer equipment, readable storage medium and program product

Abstract

The invention relates to a direct-current line protection action recognition method and device, computer equipment, a readable storage medium and a program product, and is applied to the technical field of big data, and the method comprises the steps: obtaining the power grid operation and maintenance information of a power grid system; if the power grid operation and maintenance information comprises line protection instruction information, screening target operation and maintenance information from the power grid operation and maintenance information according to information generation time corresponding to the line protection instruction information; and according to the target operation and maintenance information, identifying a DC line protection action of the power grid system to obtain protection action identification information. By adopting the method, the power grid DC line protection action recognition efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the field of big data technology, and in particular to a method, device, computer equipment, computer-readable storage medium and computer program product for identifying DC line protection actions. Background Art

[0002] When a fault occurs in the DC line of a power grid, the power grid equipment will send out DC line protection action information and perform DC line protection action. This process will be recorded in the power grid operation and maintenance information of the power grid system. The operation and maintenance personnel can identify the DC line protection action of the power grid equipment by querying the power grid operation and maintenance information. When the amount of information in the power grid operation and maintenance information is large, it may take a long time to query and identify, resulting in low efficiency in identifying the DC line protection action of the power grid. Summary of the invention

[0003] Based on this, it is necessary to provide a DC line protection action identification method, device, computer equipment, computer-readable storage medium and computer program product that can improve the efficiency of DC line protection action identification in order to solve the above technical problems.

[0004] In a first aspect, the present application provides a DC line protection action identification method, comprising:

[0005] Obtain grid operation and maintenance information of the grid system;

[0006] If the power grid operation and maintenance information includes line protection instruction information, then according to the information generation time corresponding to the line protection instruction information, the target operation and maintenance information is filtered out from the power grid operation and maintenance information;

[0007] According to the target operation and maintenance information, a DC line protection action of the power grid system is identified to obtain protection action identification information.

[0008] In a second aspect, the present application also provides a DC line protection action recognition device, comprising:

[0009] An acquisition module, used to acquire power grid operation and maintenance information of the power grid system;

[0010] a screening module, configured to screen target operation and maintenance information from the power grid operation and maintenance information according to information generation time corresponding to the line protection instruction information if the power grid operation and maintenance information includes line protection instruction information;

[0011] The identification module is used to identify the DC line protection action of the power grid system according to the target operation and maintenance information to obtain protection action identification information.

[0012] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0013] Obtain grid operation and maintenance information of the grid system;

[0014] If the power grid operation and maintenance information includes line protection instruction information, then according to the information generation time corresponding to the line protection instruction information, the target operation and maintenance information is filtered out from the power grid operation and maintenance information;

[0015] According to the target operation and maintenance information, a DC line protection action of the power grid system is identified to obtain protection action identification information.

[0016] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0017] Obtain grid operation and maintenance information of the grid system;

[0018] If the power grid operation and maintenance information includes line protection instruction information, then according to the information generation time corresponding to the line protection instruction information, the target operation and maintenance information is filtered out from the power grid operation and maintenance information;

[0019] According to the target operation and maintenance information, a DC line protection action of the power grid system is identified to obtain protection action identification information.

[0020] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0021] Obtain grid operation and maintenance information of the grid system;

[0022] If the power grid operation and maintenance information includes line protection instruction information, then according to the information generation time corresponding to the line protection instruction information, the target operation and maintenance information is filtered out from the power grid operation and maintenance information;

[0023] According to the target operation and maintenance information, a DC line protection action of the power grid system is identified to obtain protection action identification information.

[0024] The above-mentioned DC line protection action identification method, device, computer equipment, computer-readable storage medium and computer program product obtain power grid operation and maintenance information of the power grid system; if the power grid operation and maintenance information includes line protection instruction information, then according to the information generation time corresponding to the line protection instruction information, the target operation and maintenance information is screened from the power grid operation and maintenance information; according to the target operation and maintenance information, the DC line protection action of the power grid system is identified to obtain protection action identification information, and the information generation time corresponding to the line protection instruction information is used as the basis for screening the target operation and maintenance information, and the target operation and maintenance information is the identification source of the DC line protection action, which can reduce the amount of data that needs to be identified to a certain extent, so as to reduce the time required for the DC line protection action identification, thereby improving the identification efficiency of the power grid DC line protection action. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A diagram showing an application environment of a DC line protection action identification method in one embodiment;

[0027] Figure 2 A diagram showing an application environment of a DC line protection action identification method in another embodiment;

[0028] Figure 3 A schematic diagram of a flow chart of a DC line protection action identification method in one embodiment;

[0029] Figure 4 A flowchart of steps for identifying a DC line protection action of the power grid system according to the target operation and maintenance information to obtain protection action identification information in an embodiment;

[0030] Figure 5 It is a flowchart of a step of selecting target operation and maintenance information from the power grid operation and maintenance information according to the information generation time corresponding to the line protection instruction information in an embodiment;

[0031] Figure 6 is a structural block diagram of a DC line protection action identification device in one embodiment;

[0032] Figure 7 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application 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 application and are not used to limit the present application.

[0034] It should be noted that the information (for example, power grid operation and maintenance information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the acquisition, transmission, storage, use and processing of relevant data are in compliance with the relevant provisions of national laws and regulations. For content pushed to users (for example, protection action recognition information, etc.), users can refuse or conveniently refuse content push, etc. In the embodiments of this application, certain software, components, models and other existing solutions in the industry may be mentioned, and they should be regarded as exemplary. Their purpose is only to illustrate the feasibility of the implementation of the technical solution of this application, but it does not mean that the applicant has or will necessarily use the solution.

[0035] The DC line protection action recognition method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be integrated on the server 104, or it can be placed on the cloud or other network servers. The server 104 obtains the power grid operation and maintenance information of the power grid system; if the power grid operation and maintenance information includes line protection instruction information, the target operation and maintenance information is filtered from the power grid operation and maintenance information according to the information generation time corresponding to the line protection instruction information; according to the target operation and maintenance information, the DC line protection action of the power grid system is identified to obtain the protection action identification information. The server 104 can also push the protection action identification information to the terminal 102. Among them, the terminal 102 can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart car devices, projection devices, etc. Portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. The head-mounted device can be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc. The server 104 may be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides cloud computing services.

[0036] The DC line protection action identification method provided in the embodiment of the present application can also be applied to Figure 2In the application environment shown. The power grid system 20 includes a storage component 21, a control component 22 and a display component 23. The storage component 21 is used to store data that the control component 22 needs to process. The control component 22 obtains the power grid operation and maintenance information of the power grid system 20 from the storage component 21; if the power grid operation and maintenance information includes line protection instruction information, the target operation and maintenance information is filtered from the power grid operation and maintenance information according to the information generation time corresponding to the line protection instruction information; according to the target operation and maintenance information, the DC line protection action of the power grid system is identified to obtain the protection action identification information, and the control component 22 controls the display component 23 to display the protection action identification information.

[0037] In an exemplary embodiment, Figure 3 As shown, a DC line protection action identification method is provided, and the method is applied to Figure 1 The server 104 in the example is used as an example to illustrate, including the following steps 302 to 306. Among them:

[0038] Step 302: Obtain power grid operation and maintenance information of the power grid system.

[0039] The power grid operation and maintenance information in step 302 includes information generated during the operation and maintenance of the power grid, and the power grid operation and maintenance information includes at least one of information generation time, information type, information issuing device, operation and maintenance type and information content; the information type includes at least one of instruction type and execution action type; the information issuing device includes at least one of protection device and control device; the operation and maintenance type is used to characterize the operation logic adopted in the operation and maintenance process; the information content includes at least one of line protection instruction, received line protection instruction, power grid execution action and DC line protection action; the line protection instruction is initiated by the station, and the received line protection instruction is the line protection instruction initiated by the receiving station, and the line protection instruction includes at least one of traveling wave protection action instruction, voltage mutation protection action instruction and line longitudinal differential protection instruction; the power grid execution action includes at least one of locking action, triggering recording action and opening action, and the triggering recording action includes at least one of triggering line recording action, triggering fault recording action and triggering protection device recording action; the DC line protection action includes at least one of requesting phase shift action, requesting voltage reduction action and phase shift locking action.

[0040] Exemplarily, step 302 includes: querying power grid operation and maintenance information from a storage component of the power grid system.

[0041] Step 304: If the power grid operation and maintenance information includes line protection instruction information, target operation and maintenance information is filtered from the power grid operation and maintenance information according to the information generation time corresponding to the line protection instruction information.

[0042] Optionally, before step 304, the method also includes: if there is information in the power grid operation and maintenance information whose information content includes line protection instructions, then determining that the power grid operation and maintenance information includes line protection instruction information; if there is no information in the power grid operation and maintenance information whose information content includes line protection instructions, then determining that the power grid operation and maintenance information does not include line protection instruction information.

[0043] Exemplarily, based on the information generation time corresponding to the line protection instruction information, before filtering the target operation and maintenance information from the power grid operation and maintenance information, the method also includes: determining the information generation time corresponding to the information including the line protection instruction information in the information content existing in the power grid operation and maintenance information as the information generation time corresponding to the line protection instruction information.

[0044] Exemplarily, according to the information generation time corresponding to the line protection instruction information, target operation and maintenance information is filtered from the power grid operation and maintenance information, including: determining the filtering time range according to the information generation time corresponding to the line protection instruction information, and filtering the target operation and maintenance information from the power grid operation and maintenance information according to the filtering time range.

[0045] Step 306: Identify the DC line protection action of the power grid system according to the target operation and maintenance information to obtain protection action identification information.

[0046] Exemplarily, step 306 includes: identifying the restart status and restart times of the power grid system according to the target operation and maintenance information, obtaining restart status information and the number of successful restarts, and determining protection action identification information according to the restart status information and the number of successful restarts.

[0047] In the above-mentioned DC line protection action identification method, the power grid operation and maintenance information of the power grid system is obtained; if the power grid operation and maintenance information includes line protection instruction information, the target operation and maintenance information is screened from the power grid operation and maintenance information according to the information generation time corresponding to the line protection instruction information; according to the target operation and maintenance information, the DC line protection action of the power grid system is identified to obtain protection action identification information, and the information generation time corresponding to the line protection instruction information is used as the basis for screening the target operation and maintenance information, and the target operation and maintenance information is the identification source of the DC line protection action, which can reduce the amount of data that needs to be identified to a certain extent, so the time required for the DC line protection action identification is reduced, thereby improving the identification efficiency of the power grid DC line protection action.

[0048] In an exemplary embodiment, Figure 4 As shown, in order to provide a method for accurately identifying the DC line protection action, the DC line protection action of the power grid system is identified according to the target operation and maintenance information, and the protection action identification information is obtained, including steps 402 to 408. Among them:

[0049] Step 402: Filter various types of DC protection action information from the target operation and maintenance information.

[0050] The various types of DC protection action information in step 402 include at least one of request phase shift action information and request voltage reduction action information.

[0051] Exemplarily, step 402 includes: filtering various types of DC protection action information including DC line protection actions from the target operation and maintenance information.

[0052] As an embodiment, various types of DC protection action information including DC line protection actions are filtered out from the target operation and maintenance information, including: request voltage reduction action information including request voltage reduction action is filtered out from the target operation and maintenance information, and request phase shift action information including request phase shift action is filtered out from the target operation and maintenance information.

[0053] It can be understood that, when the target operation and maintenance information does not contain information including requesting a voltage reduction action, it means that the target operation and maintenance information does not include information requesting a voltage reduction action; and when the target operation and maintenance information does not contain information including requesting a phase shift action, it means that the target operation and maintenance information does not include information requesting a phase shift action.

[0054] Step 404: Generate the restart times of the power grid system according to various DC protection action information.

[0055] The number of restarts in step 404 includes the number of full-pressure restarts and the number of reduced-pressure restarts.

[0056] Exemplarily, step 404 includes: determining the full-pressure restart number according to the requested phase shift action information and the full-pressure restart number threshold, and determining the reduced-pressure restart number according to the requested voltage reduction action information and the reduced-pressure restart number threshold.

[0057] As an embodiment, step 404 includes: determining the number of restarts as a first preset integer; an adjustment step: increasing the number of restarts; if various types of DC protection action information include information that the number of requests is consistent with the number of restarts, then when the number of restarts is less than the restart number threshold, return to execute the adjustment step, and when the number of restarts is not less than the restart number threshold, output the number of restarts; if various types of DC protection action information do not include information that the number of requests is consistent with the number of restarts, then reduce the number of restarts and output the reduced number of restarts.

[0058] The first preset integer can be 0 or other values, which are not limited here.

[0059] As an embodiment, the first preset integer is set to be smaller, for example, the first preset integer is set to 0.

[0060] In this way, it is ensured that the number of restarts can be gradually increased through the adjustment steps during the cycle until it matches the actual number of restarts of the power grid system, avoiding the situation where the first preset integer is set to a large value and the number of restarts needs to be reduced in subsequent cycles, resulting in the final output number of restarts not matching the actual number of restarts of the power grid system, thereby improving the output accuracy of the number of restarts.

[0061] As an embodiment, a first preset integer is determined according to a historical restart number of the power grid system, wherein the first preset integer is less than or equal to the historical restart number.

[0062] In this way, it is ensured that the number of restarts can be gradually increased through the adjustment steps during the cycle until it meets the actual number of restarts of the power grid system. Since the first preset integer is determined by the historical number of restarts, it is highly likely that the difference between the first preset integer and the actual number of restarts of the power grid system is not large, and the number of cycles can be reduced to a certain extent. Therefore, under the premise of ensuring the output accuracy of the number of restarts, the output efficiency of the number of restarts is improved.

[0063] The adjustment value of the restart times (including the increase value and the decrease value) can be any integer and is not limited here.

[0064] As an embodiment, the adjustment value of the restart times is set to 1.

[0065] In this way, the adjustment value is set to a smaller value, and each increase and decrease value are set to the same, which can ensure that the number of restarts can be gradually adjusted during the cycle until it meets the actual number of restarts of the power grid system, avoiding the situation where the adjustment value is set too large, resulting in excessive adjustment and requiring repeated cycles, and can reduce the number of cycles to a certain extent. Therefore, under the premise of ensuring the output accuracy of the restart number, the output efficiency of the restart number is improved.

[0066] Further, each type of DC protection action information includes at least one of request phase shift action information and request voltage reduction action information, the number of restarts includes the number of full-voltage restarts and the number of voltage reduction restarts, and the first preset integer includes the first preset sub-integer and the second preset sub-integer; step 404 includes: determining the number of full-voltage restarts as the first preset sub-integer, and determining the number of voltage reduction restarts as the second preset sub-integer; a first adjustment step: increasing the number of full-voltage restarts; if the various types of DC protection action information include request phase shift action information whose request number matches the number of full-voltage restarts, then when the number of full-voltage restarts is less than the full-voltage restart number threshold, return to execute the first adjustment step, and when the number of full-voltage restarts is not less than the full-voltage restart number threshold, output the full-voltage restart. times; if the various types of DC protection action information do not include the requested phase-shifting action information whose request times are consistent with the full-voltage restart times, then reduce the full-voltage restart times and output the reduced full-voltage restart times; the second adjustment step: increase the step-down restart times; if the various types of DC protection action information include the requested step-down action information whose request times are consistent with the step-down restart times, then when the step-down restart times are less than the step-down restart times threshold, return to execute the second adjustment step, and when the step-down restart times are not less than the step-down restart times threshold, output the step-down restart times; if the various types of DC protection action information do not include the requested step-down action information whose request times are consistent with the step-down restart times, then reduce the step-down restart times and output the reduced step-down restart times.

[0067] It is understandable that, considering that the execution logic of the power grid protection action is as follows: when the phase shift action is not requested, the voltage reduction action is usually not requested either.

[0068] Optionally, the method also includes: if various types of DC protection action information do not include request phase shift action information, then using a second preset integer as the output value of the number of voltage reduction restarts, and using a second preset integer as the output value of the number of full-voltage restarts, wherein the second preset integer is less than or equal to the first preset integer, and the second preset integer can be 0.

[0069] In this way, taking into account the execution logic of the power grid protection action, when the various types of DC protection action information do not include the requested phase shift action information, it means that the power grid system has not performed the requested phase shift action. Therefore, there is no need to make subsequent judgments on the requested voltage reduction action information. The second preset integer is directly used as the output value of the voltage reduction restart number, and the second preset integer is used as the output value of the full-voltage restart number, thereby improving the output efficiency of the restart number.

[0070] As another embodiment, step 404 includes: determining a first request number for requesting phase shift action information in various types of DC protection action information, and a second request number for requesting voltage reduction action information; when the first request number is greater than a full-voltage restart number threshold, the full-voltage restart number threshold is determined as the full-voltage restart number, and when the first request number is not greater than the full-voltage restart number threshold, the first request number is determined as the full-voltage restart number; when the second request number is greater than the voltage reduction restart number threshold, the voltage reduction restart number threshold is determined as the voltage reduction restart number, and when the first request number is not greater than the voltage reduction restart number threshold, the first request number is determined as the voltage reduction restart number.

[0071] In this way, by directly accumulating the first request number and the second request number, and determining the full-pressure restart number by the size relationship between the first request number and the full-pressure restart number threshold, and determining the step-down restart number by the size relationship between the second request number and the step-down restart number threshold, the output efficiency of the restart number is improved.

[0072] Optionally, the method further includes: acquiring system information of the power grid system; evaluating the tolerable number of restarts of the power grid system based on the system information; and determining a restart number threshold based on the tolerable number of restarts.

[0073] Furthermore, the tolerable number of restarts includes a tolerable number of full-pressure restarts and a tolerable number of reduced-pressure restarts. A restart number threshold is determined based on the tolerable number of restarts, including: determining a full-pressure restart number threshold based on the tolerable number of full-pressure restarts, and determining a reduced-pressure restart number threshold based on the tolerable number of reduced-pressure restarts.

[0074] The system information includes at least one of system structure information, line parameter information and circuit load information, and the line parameter information includes at least one of line current information and line voltage information.

[0075] Furthermore, based on the system information, the tolerable number of restarts of the power grid system is evaluated, including: based on the system information, the bearing capacity of the power grid system is evaluated to obtain the bearing capacity information, and based on the bearing capacity information, the tolerable full-pressure restart number and the tolerable reduced-voltage restart number of the power grid system are generated, wherein the stronger the bearing capacity of the power grid system represented by the bearing capacity information, the more full-pressure restart number and the tolerable reduced-voltage restart number of the power grid system are generated.

[0076] In this way, the generated tolerable full-voltage restart times and tolerable reduced-voltage restart times of the power grid system are matched with the tolerable capacity of the power grid system, thereby improving the accuracy of determining the tolerable full-voltage restart times and the tolerable reduced-voltage restart times.

[0077] Step 406: If there is phase shift locking information in the target operation and maintenance information, protection action identification information is determined according to the first restart state information and the restart number, wherein the first restart state information is used to characterize the restart failure state of the power grid system.

[0078] The information content of the first restart status information in step 406 may include restart failure or restart trip, which is not limited here.

[0079] As an embodiment, determining the protection action identification information according to the first restart state information and the restart number includes: concatenating the first restart state information and the restart number to obtain the protection action identification information.

[0080] Step 408: If there is no phase shift locking information in the target operation and maintenance information, protection action identification information is determined according to the second restart state information and the restart number, wherein the second restart state information is used to represent the restart success state of the power grid system.

[0081] As an embodiment, determining the protection action identification information according to the second restart state information and the restart number includes: concatenating the second restart state information and the restart number to obtain the protection action identification information.

[0082] Optionally, the method also includes: if the target operation and maintenance information contains information whose information content includes phase-shift locking action, then determining that the target operation and maintenance information contains phase-shift locking information; if the target operation and maintenance information does not contain information whose information content includes phase-shift locking action, then determining that the target operation and maintenance information does not contain phase-shift locking information.

[0083] In this embodiment, various types of DC protection action information are screened from the target operation and maintenance information; the number of restarts of the power grid system is generated according to the various types of DC protection action information; if there is phase shift locking information in the target operation and maintenance information, the protection action identification information is determined according to the first restart status information and the number of restarts, wherein the first restart status information is used to characterize the restart failure state of the power grid system; if there is no phase shift locking information in the target operation and maintenance information, the protection action identification information is determined according to the second restart status information and the number of restarts, wherein the second restart status information is used to characterize the restart success state of the power grid system, and the number of restarts and the restart status information are used as the basis for determining the protection action identification information, so that the generated protection action identification information can characterize the restart number and restart state of the power grid system, thereby improving the information content richness of the protection action identification information.

[0084] In an exemplary embodiment, Figure 5 As shown, in order to provide a method for accurately screening target operation and maintenance information, screening target operation and maintenance information from power grid operation and maintenance information includes steps 502 to 506 according to the information generation time corresponding to the line protection instruction information. Among them:

[0085] Step 502: Determine protection action time information of the power grid system.

[0086] Exemplarily, step 502 includes: obtaining historical power grid operation and maintenance information of the power grid system, filtering information whose information content belongs to the protection action process from the historical power grid operation and maintenance information, determining the time range composed of the information generation time of the above information as each protection action time range, and determining the protection action time information of the power grid system according to the time length corresponding to each protection action time range.

[0087] As one embodiment, the protection action time information of the power grid system is determined according to the duration corresponding to each protection action time range, including: determining the average value of the duration corresponding to each protection action time range as the protection action time information of the power grid system, or determining the maximum value of the duration corresponding to each protection action time range as the protection action time information of the power grid system.

[0088] Step 504: Generate a screening time range according to the protection action time information and the information generation time corresponding to the line protection instruction information.

[0089] The protection action time information in step 504 includes the protection action duration.

[0090] Exemplarily, step 504 includes: determining the information generation time corresponding to the line protection instruction information as the initial time, and determining the sum of the protection action duration and the information generation time corresponding to the line protection instruction information as the termination time. For example, the protection action duration is 2s, and the information generation time corresponding to the line protection instruction information is 1:02 (1 minute and 2 seconds), then 1:02+2=1:22 (1 minute and 22 seconds): the time range composed of the initial time and the termination time is determined as the screening time range.

[0091] It is understandable that since the power grid operation and maintenance information is recorded after each device initiates various information contents, and the device needs to send the recorded power grid operation and maintenance information to the storage component of the power grid system so that the storage component can integrate the power grid operation and maintenance information sent by each device, the recorded power grid operation and maintenance information may have a communication delay.

[0092] As an embodiment, the information generation time corresponding to the line protection command information is determined as the initial time, including: obtaining the communication delay between each device of the power grid system, and determining the difference between the information generation time corresponding to the line protection command information and the communication delay as the initial time. For example, when the communication delay is 0.2s and the information generation time corresponding to the line protection command information is 1:02, 1:02-0.2=1 (1 minute) is used as the initial time.

[0093] In this way, considering that there may be communication delays in the recorded power grid operation and maintenance information, the initial time is set earlier to ensure that the target operation and maintenance information obtained by filtering the filtering time range generated based on the initial time can represent the complete power grid protection action information, thereby improving the accuracy of setting the initial time.

[0094] Step 506: Filter target operation and maintenance information from the power grid operation and maintenance information according to the filtering time range.

[0095] Exemplarily, step 506 includes: determining information in the power grid operation and maintenance information whose information generation time is within the screening time range as target operation and maintenance information.

[0096] In this embodiment, the protection action time information of the power grid system is determined; a screening time range is generated according to the information generation time corresponding to the protection action time information and the line protection command information; and the target operation and maintenance information is screened from the power grid operation and maintenance information according to the screening time range. Considering that the protection action time information can represent the time required for the power grid system to perform the protection action, it is ensured that the target operation and maintenance information screened out by the screening time range generated by the information generation time corresponding to the protection action time information and the line protection command information can represent the complete power grid protection action information, thereby improving the screening accuracy of the target operation and maintenance information.

[0097] As a detailed embodiment, grid operation and maintenance information of a grid system is obtained; if the grid operation and maintenance information includes line protection instruction information, protection action time information of the grid system is determined; a screening time range is generated according to information generation time corresponding to the protection action time information and the line protection instruction information; target operation and maintenance information is screened from the grid operation and maintenance information according to the screening time range; various types of DC protection action information are screened from the target operation and maintenance information; the number of restarts is determined as a first preset integer; an adjustment step is performed: the number of restarts is increased; if various types of DC protection action information include information that the number of requests is consistent with the number of restarts, then when the number of restarts is less than the restart number threshold, the adjustment step is returned to execute. , when the number of restarts is not less than the restart number threshold, output the number of restarts; if various types of DC protection action information do not include information that the request number is consistent with the restart number, then reduce the number of restarts and output the reduced number of restarts; various types of DC protection action information include at least one of request phase shift action information and request voltage reduction action information, and the number of restarts includes full-voltage restart times and voltage reduction restart times; obtain system information of the power grid system; based on the system information, evaluate the tolerable full-voltage restart times and voltage reduction restart times of the power grid system; determine the full-voltage restart number threshold based on the tolerable full-voltage restart times, and, based on the tolerable voltage reduction restart times, determine the voltage reduction restart number threshold.

[0098] Furthermore, if each type of DC protection action information does not include request phase shift action information, the second preset integer is determined as the number of full-voltage restarts, and the second preset integer is determined as the number of reduced-voltage restarts, wherein the second preset integer is less than or equal to the first preset integer; if there is phase shift lockout information in the target operation and maintenance information, the protection action identification information is determined based on the first restart status information and the number of restarts, wherein the first restart status information is used to characterize the restart failure state of the power grid system; if there is no phase shift lockout information in the target operation and maintenance information, the protection action identification information is determined based on the second restart status information and the number of restarts, wherein the second restart status information is used to characterize the restart success state of the power grid system.

[0099] In this way, the power grid operation and maintenance information of the power grid system is obtained; if the power grid operation and maintenance information includes line protection instruction information, the target operation and maintenance information is screened from the power grid operation and maintenance information according to the information generation time corresponding to the line protection instruction information; according to the target operation and maintenance information, the DC line protection action of the power grid system is identified to obtain protection action identification information, and the information generation time corresponding to the line protection instruction information is used as the basis for screening the target operation and maintenance information, and the target operation and maintenance information is the identification source of the DC line protection action, which can reduce the amount of data that needs to be identified to a certain extent, so the time required for the identification of the DC line protection action is reduced, thereby improving the identification efficiency of the power grid DC line protection action.

[0100] Furthermore, the number of restarts and the restart status information are used as the basis for determining the protection action identification information, so that the generated protection action identification information can characterize the number of restarts and the restart status of the power grid system, thereby improving the information richness of the protection action identification information; and, considering that the protection action time information can characterize the time required for the power grid system to perform a protection action, the information generation time corresponding to the protection action time information and the line protection instruction information is ensured, and the target operation and maintenance information filtered out within the generated screening time range can characterize the complete power grid protection action information, thereby improving the screening accuracy of the target operation and maintenance information.

[0101] It should be understood that, although the steps in the flowcharts involved in the above embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above embodiments may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0102] Based on the same inventive concept, the embodiment of the present application also provides a DC line protection action recognition device for implementing the DC line protection action recognition method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more DC line protection action recognition device embodiments provided below can refer to the limitations of the DC line protection action recognition method above, and will not be repeated here.

[0103] In an exemplary embodiment, Figure 6 As shown, a DC line protection action recognition device 600 is provided, comprising: an acquisition module 602, a screening module 604 and an identification module 606, wherein:

[0104] An acquisition module 602 is used to acquire power grid operation and maintenance information of the power grid system;

[0105] A screening module 604 is configured to screen target operation and maintenance information from the power grid operation and maintenance information according to information generation time corresponding to the line protection instruction information if the power grid operation and maintenance information includes line protection instruction information;

[0106] The identification module 606 is used to identify the DC line protection action of the power grid system according to the target operation and maintenance information to obtain protection action identification information.

[0107] In one of the embodiments, the identification module 606 is also used to filter various types of DC protection action information from the target operation and maintenance information; generate the number of restarts of the power grid system based on the various types of DC protection action information; if there is phase shift locking information in the target operation and maintenance information, the protection action identification information is determined based on the first restart status information and the number of restarts, wherein the first restart status information is used to characterize the restart failure state of the power grid system; if there is no phase shift locking information in the target operation and maintenance information, the protection action identification information is determined based on the second restart status information and the number of restarts, wherein the second restart status information is used to characterize the restart success state of the power grid system.

[0108] In one of the embodiments, the identification module 606 is also used to determine the number of restarts as a first preset integer; adjustment step: increase the number of restarts; if various types of DC protection action information include information that the number of requests is consistent with the number of restarts, then when the number of restarts is less than the restart number threshold, return to execute the adjustment step, and when the number of restarts is not less than the restart number threshold, output the number of restarts; if various types of DC protection action information do not include information that the number of requests is consistent with the number of restarts, then reduce the number of restarts and output the reduced number of restarts.

[0109] In one of the embodiments, each type of DC protection action information includes at least one of request phase shift action information and request voltage reduction action information, and the number of restarts includes the number of full-voltage restarts and the number of voltage reduction restarts; the identification module 606 is also used to determine the second preset integer as the number of full-voltage restarts and the second preset integer as the number of voltage reduction restarts if the various types of DC protection action information do not include the request phase shift action information, wherein the second preset integer is less than or equal to the first preset integer.

[0110] In one of the embodiments, the identification module 606 is further configured to obtain system information of the power grid system; evaluate the tolerable number of restarts of the power grid system according to the system information; and determine a restart number threshold according to the tolerable number of restarts.

[0111] In one embodiment, the screening module 604 is also used to determine the protection action time information of the power grid system; generate a screening time range according to the information generation time corresponding to the protection action time information and the line protection instruction information; and screen the target operation and maintenance information from the power grid operation and maintenance information according to the screening time range.

[0112] Each module in the above-mentioned DC line protection action recognition device can be implemented in whole or in part by software, hardware and their combination. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0113] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 7As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a DC line protection action recognition method is realized. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0114] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0115] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0116] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0117] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0118] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0119] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0120] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A DC line protection action identification method, characterized in that: The method comprises: Obtain grid operation and maintenance information of the grid system; If the power grid operation and maintenance information includes line protection instruction information, then according to the information generation time corresponding to the line protection instruction information, the target operation and maintenance information is filtered out from the power grid operation and maintenance information; According to the target operation and maintenance information, a DC line protection action of the power grid system is identified to obtain protection action identification information.

2. The method according to claim 1, characterized in that The step of identifying the DC line protection action of the power grid system according to the target operation and maintenance information to obtain protection action identification information includes: Filtering various types of DC protection action information from the target operation and maintenance information; Generating the restart times of the power grid system according to the various types of DC protection action information; If there is phase shift locking information in the target operation and maintenance information, determining protection action identification information according to the first restart state information and the restart number, wherein the first restart state information is used to characterize the restart failure state of the power grid system; If the phase shift locking information does not exist in the target operation and maintenance information, the protection action identification information is determined according to the second restart state information and the restart number, wherein the second restart state information is used to represent the restart success state of the power grid system.

3. The method according to claim 2, characterized in that Generating the restart times of the power grid system according to the various types of DC protection action information includes: Determine the restart number as a first preset integer; Adjustment steps: Increase the number of restarts; If the various types of DC protection action information include information that the request number is consistent with the restart number, then when the restart number is less than the restart number threshold, return to execute the adjustment step, and when the restart number is not less than the restart number threshold, output the restart number; If the various types of DC protection action information do not include information indicating that the number of requests matches the number of restarts, the number of restarts is reduced and the reduced number of restarts is output.

4. The method according to claim 3, characterized in that: The various types of DC protection action information include at least one of request phase shift action information and request voltage reduction action information, and the number of restarts includes the number of full voltage restarts and the number of voltage reduction restarts; the method further includes: If the various types of DC protection action information do not include the requested phase shift action information, the second preset integer is determined as the full-voltage restart number, and the second preset integer is determined as the reduced-voltage restart number, wherein the second preset integer is less than or equal to the first preset integer.

5. The method according to claim 3, characterized in that: The method further comprises: Acquiring system information of the power grid system; According to the system information, evaluating the tolerable restart times of the power grid system; The restart number threshold is determined according to the tolerable restart number.

6. The method according to any one of claims 1 to 5, characterized in that The step of filtering target operation and maintenance information from the power grid operation and maintenance information according to the information generation time corresponding to the line protection instruction information includes: Determining protection action time information of the power grid system; Generate a screening time range according to the protection action time information and the information generation time corresponding to the line protection instruction information; Target operation and maintenance information is filtered from the power grid operation and maintenance information according to the filtering time range.

7. A DC line protection action recognition device, characterized in that: The device comprises: An acquisition module, used to acquire power grid operation and maintenance information of the power grid system; a screening module, configured to screen target operation and maintenance information from the power grid operation and maintenance information according to information generation time corresponding to the line protection instruction information if the power grid operation and maintenance information includes line protection instruction information; The identification module is used to identify the DC line protection action of the power grid system according to the target operation and maintenance information to obtain protection action identification information.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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