CN112418593A - Power system protection action analysis report generation method and device and wave recorder - Google Patents

Power system protection action analysis report generation method and device and wave recorder Download PDF

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CN112418593A
CN112418593A CN202011009928.8A CN202011009928A CN112418593A CN 112418593 A CN112418593 A CN 112418593A CN 202011009928 A CN202011009928 A CN 202011009928A CN 112418593 A CN112418593 A CN 112418593A
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fault
protection action
protection
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information
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李永恒
郑润蓝
王其林
吴少林
张文
王勋江
童斯琦
张瑞
周建建
陈文广
徐玄浩
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Shenzhen Power Supply Bureau Co Ltd
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Abstract

The application relates to a method and a device for generating a protection action analysis report of a power system and a wave recorder. The method comprises the following steps: acquiring a fault recording file; restoring the fault information and the execution process of the protection action according to the fault recording file; analyzing the executing process of the protection action according to the fault recording file and the fault information, and generating a protection action analysis result; and generating a protection action analysis report according to the protection action analysis result. By adopting the method, the protection action can be automatically reproduced and analyzed, and a protection action analysis report can be generated, thereby being beneficial to improving the efficiency.

Description

Power system protection action analysis report generation method and device and wave recorder
Technical Field
The present application relates to the field of elastic power system technologies, and in particular, to a method and an apparatus for generating a protection action analysis report of a power system, and a wave recorder.
Background
With the rapid development of national economy, the requirements on the stability of the power system are continuously improved. Generally, after a power system fails, a protection device is used to perform protection operation to avoid local problem enlargement, and then, a failed element is repaired to recover normal operation of the power system. Therefore, the execution of the protective action is critical for fault recovery of the power system.
However, in the conventional method for generating the analysis report of the protection action of the power system, after the power system fails, the operation and maintenance personnel need to arrive at the wave recording file copied from the site where the wave recorder is located, print the protection action information, analyze and record the protection action information, and make the analysis report of the protection action, which has many steps and large workload.
Therefore, the conventional method for generating the electric power system protection operation analysis report has a problem of low efficiency.
Disclosure of Invention
In view of the above, it is desirable to provide a method and an apparatus for generating an analysis report of a protection operation of a power system, and a wave recorder, which improve efficiency.
In a first aspect, a power system protection action analysis report generation method is provided, and the method includes:
acquiring a fault recording file;
restoring the fault information and the execution process of the protection action according to the fault recording file;
analyzing the executing process of the protection action according to the fault recording file and the fault information, and generating a protection action analysis result;
and generating a protection action analysis report according to the protection action analysis result.
In one embodiment, the process of restoring the fault information and performing the protection action according to the fault recording file includes:
acquiring wave recording data before and after a fault according to the fault wave recording file;
determining fault information according to the recording data before and after the fault;
acquiring wave recording data before and after the execution of the protection action according to the fault wave recording file;
and determining the execution process of the protection action according to the recording data before and after the execution of the protection action.
In one embodiment, the wave recording data includes phase-to-phase current, the fault information includes a fault phase, and determining the fault information according to the wave recording data before and after the fault includes:
acquiring interphase current break variables before and after a fault according to recording data before and after the fault;
and determining the fault phase according to the magnitude relation of the interphase current sudden change.
In one embodiment, the execution of the protection action includes action time, action element, and action phase.
In one embodiment, analyzing the execution process of the protection action according to the fault recording file and the fault information, and generating a protection action analysis result, includes:
and acquiring wave recording data before the execution of the protection action according to the fault wave recording file, and generating an analysis result that the protection action is correct when the wave recording data before the execution of the protection action meets the execution condition of the protection action and the fault information is matched with the execution process of the protection action.
In one embodiment, generating a protection action analysis report according to the protection action analysis result includes:
determining basic information of a protection event according to fault information and the execution process of the protection action;
and generating a protection action analysis report according to the protection action analysis result and the basic information of the protection event.
In one embodiment, generating a protection action analysis report according to the protection action analysis result includes:
determining the operation conditions of the power system before the fault and after the protection action is executed according to the switch displacement information of the power system before the fault and after the protection action is executed;
determining the configuration condition of the protection device according to the configuration information of the protection device;
and generating a protection action analysis report according to the protection action analysis result, the operation condition of the power system before the fault and after the protection action is executed and the configuration condition of the protection device.
In one embodiment, after generating the protection action analysis report, the method further includes:
and sending the protection action analysis report to a wave recording master station and/or terminal equipment.
In a second aspect, there is provided an electric power system protection action analysis report generation apparatus, including:
the file acquisition module is used for acquiring a fault recording file;
the information reduction module is used for reducing the execution process of the fault information and the protection action according to the fault recording file;
the action analysis module is used for analyzing the execution process of the protection action according to the fault recording file and the fault information and generating a protection action analysis result;
and the report generating module is used for generating a protection action analysis report according to the protection action analysis result.
In a third aspect, a wave recorder is provided, which includes a collector and a controller, wherein the collector is connected with the controller; the collector is used for collecting fault recording data and generating a fault recording file; the controller is used for realizing the steps of the method.
According to the method and the device for generating the protection action analysis report of the power system and the wave recorder, the fault information and the execution process of the protection action are restored through the acquired fault wave recording file, the execution process of the protection action is analyzed, and the protection action analysis report is generated according to the analysis result. The whole process does not need human intervention, can automatically reproduce and analyze the protection action, and generate a protection action analysis report, thereby being beneficial to improving the efficiency.
Drawings
FIG. 1 is a flow diagram illustrating a method for generating an analysis report of protection actions of a power system according to an embodiment;
FIG. 2 is a flowchart illustrating a process of executing the recovery fault information and the protection action according to the fault recording file in one embodiment;
FIG. 3 is a schematic flow chart illustrating the process of determining fault information according to the recording data before and after the fault in one embodiment;
FIG. 4 is a flow diagram that illustrates the generation of a protection action analysis report based on the protection action analysis result, according to an embodiment;
FIG. 5 is a flow chart illustrating the generation of a protection action analysis report according to the protection action analysis result in another embodiment;
FIG. 6 is a flowchart illustrating the generation of a protection action analysis report based on the protection action analysis result in yet another embodiment;
FIG. 7 is a flowchart illustrating a method for generating an analysis report of protection actions of a power system according to another embodiment;
fig. 8 is a block diagram showing a configuration of a power system protection action analysis report generation device according to an embodiment;
fig. 9 is a block diagram showing a configuration of a power system protection operation analysis report generation device according to another embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
In one embodiment, as shown in fig. 1, there is provided a power system protection action analysis report generation method applied to a power system installed with a wave recorder, the method including:
step S100: and acquiring a fault recording file.
Wherein, the wave recording file is a file generated by the wave recorder. When the power system runs, the oscillograph automatically monitors various electric parameter change conditions in the running process of the power system, records the change conditions and generates a oscillograph file. Further, these electrical quantities include voltage, current and impedance. When the power system breaks down, the protection device executes protection action. The recording file recorded by the wave recorder in the period from before the power system fault to after the protection action is executed is called as a fault recording file. After the protection action is executed, the fault recording file may be directly extracted, or may be passively received.
Step S200: and restoring the fault information and the executing process of the protection action according to the fault recording file.
The fault information is information used for describing characteristics of the power system fault, and comprises fault current, fault voltage, fault phase, fault distance measurement and the like. The protection operation is an operation performed by the protection device for a fault after the power system has failed. The protection principle is classified, and common protection types include current differential protection, pilot distance protection, overvoltage protection, low voltage protection, reclosing protection, breaker failure protection and the like. The execution process of the protection actions includes which protection actions are executed and the execution sequence of the protection actions.
Specifically, the change condition of the electrical parameter during the fault period of the power system can be obtained according to the fault recording file, and the fault information and the execution process of the protection action can be restored by analyzing the change condition of the electrical parameter during the fault period of the power system.
Step S300: and analyzing the executing process of the protection action according to the fault recording file and the fault information, and generating a protection action analysis result.
Specifically, according to the recording file and the fault information, the execution process of the protection action can be analyzed, whether the protection device correctly executes the protection action according to the fault condition or not is judged, whether the protection action is mistaken or refused in the execution process of the protection action or not is judged, and whether the analysis result of the protection action is correct or not is generated.
Step S400: and generating a protection action analysis report according to the protection action analysis result.
Specifically, after the analysis result of the protection action is generated, a protection action analysis report is generated according to a preset template. The protection action analysis report can include fault information and an execution process of the protection action, and a fault recording file can be used as an accessory of the protection action analysis report, so that operation and maintenance personnel can conveniently and accurately carry out follow-up work arrangement according to the protection action analysis report.
According to the method for generating the protection action analysis report of the power system, the fault information and the execution process of the protection action are restored through the acquired fault recording file, the execution process of the protection action is analyzed, and the protection action analysis report is generated according to the analysis result. The whole process does not need human intervention, can automatically reproduce and analyze the protection action, generates a protection action analysis report, is favorable for improving the generation efficiency of the protection action analysis report after the fault, enables operation and maintenance personnel not to analyze the protection action and make the analysis report, only needs to directly arrange follow-up work according to the report, and is favorable for improving the power restoration efficiency.
In one embodiment, referring to fig. 2, step S200 includes steps S210 to S240.
Step S210: and acquiring wave recording data before and after the fault according to the fault wave recording file.
Step S220: and determining fault information according to the recording data before and after the fault.
As described above, the fault recording file refers to a recording file recorded by the recorder during a period from before the power system fault to after the protection action is executed. The recording data refers to the change condition of the electrical parameter within a certain time. It will be appreciated that after a fault occurs, the protection device will take some reaction time before the protection action is performed. Therefore, the recording data before the fault refers to the recording data when the power system normally operates before the fault occurs; the recording data after the fault refers to the recording data after the fault occurs and before the protection action is executed.
Specifically, the change conditions of the electrical parameters before and after the fault can be obtained according to the fault recording file, and the fault current, the fault voltage, the fault phase, the fault distance measurement and the like can be determined according to the change conditions of the electrical parameters before and after the fault.
Step S230: and acquiring wave recording data before and after the execution of the protection action according to the fault wave recording file.
Step S240: and determining the execution process of the protection action according to the recording data before and after the execution of the protection action.
Similarly, the recording data before the execution of the protection action refers to the recording data after the occurrence of the fault and before the execution of the protection action; the recording data after the protection operation is executed is recording data after the protection device executes the protection operation. According to the fault recording file, the change conditions of the electrical parameters before and after the execution of the protection actions can be obtained, and the protection actions can be determined according to the change conditions of the electrical parameters before and after the execution of the protection actions, the execution sequence of different protection actions and the like.
In one embodiment, the execution of the protection action includes action time, action element, and action phase.
As is well known, the alternating current produced, transmitted and distributed in the power system in China is the three-phase alternating current due to the advantages of the three-phase alternating current. Wherein, three phases of the three-phase alternating current refer to three alternating current potentials which have the same frequency and the same amplitude and are mutually different by 120 degrees in sequence. The action phase refers to a corresponding phase when the protection element performs the protection action. Specifically, when a power system fails, the action elements and actions for performing the protection actions are different according to the failure conditions. The number of the action elements may be one or multiple, and each action element may execute the protection actions simultaneously or sequentially according to a certain order. When there are a plurality of action elements, the action time refers to the corresponding starting time when each action element executes each protection action, and correspondingly, the action phase refers to the action phase corresponding to each protection action.
In the above embodiment, the fault information is determined by analyzing the recording data before and after the fault, and the execution process of the protection action is determined by analyzing the recording data before and after the protection action is executed, so that the fault information and the execution process of the protection action can be accurately restored, a basis is provided for the subsequent protection action analysis, and the accuracy of the analysis result of the protection action is improved.
In one embodiment, the recording data includes phase-to-phase current, and the fault information includes a fault phase, please refer to fig. 3, wherein step S220 includes step S221 and step S222.
Step S221: and acquiring the inter-phase current break variable before and after the fault according to the recording data before and after the fault.
The inter-phase current refers to a current between different phases in a power system. The interphase current transient refers to the amount of change in interphase current. According to the recording data before and after the fault, the inter-phase current after the fault and the corresponding inter-phase current before the fault can be obtained, and the inter-phase current break variable can be obtained by calculating the difference of the inter-phase current after the fault and the corresponding inter-phase current before the fault.
Step S222: and determining the fault phase according to the magnitude relation of the interphase current sudden change.
Specifically, three phases can be represented by A, B and C, and Δ IAB、△IBCAnd Δ IACRepresenting the magnitude of the inter-phase current burst with the larger, larger and smaller representing the magnitude of the inter-phase current burst. When Δ IABAnd Δ IACLarge and Δ IBCWhen the fault phase is smaller, determining that the fault phase is A; when Δ IABAnd Δ IBCLarge and Δ IACWhen the fault phase is smaller, determining that the fault phase is B; when Δ IACAnd Δ IBCLarge and Δ IABWhen the phase is smaller, determining that the fault phase is C; when Δ IABUltra large and delta IBCAnd Δ IACWhen the fault phase is larger, determining the fault phase as A and B; when Δ IBCUltra large and delta IABAnd Δ IACWhen the fault phase is larger, determining that the fault phase is B and C; when Δ IACUltra large and delta IABAnd Δ IBCWhen the fault phase is larger, determining the fault phases as A and C; when Δ IAB、△IBCAnd Δ IACWhen the fault is too large, the fault phase is determined to be A, B and C.
Furthermore, the sudden change phase selection element can be adopted to judge the fault phase at the initial fault stage after the sudden change starting. After the non-abrupt change amount is started or the abrupt change amount starting time exceeds a preset threshold value, the steady-state sequence component phase selection element can be adopted to judge the fault phase, wherein the preset threshold value can be 20 ms. When the fault current characteristics are not obvious, the fault phase can be judged by combining the low-voltage and impedance phase selection elements.
In the above embodiment, the inter-phase current break variable before and after the fault is obtained according to the recording data before and after the fault, and the fault phase can be accurately determined by analyzing the magnitude of the inter-phase current break variable, so that a basis is provided for subsequent protection action analysis, and the accuracy of a protection action analysis result is improved.
In one embodiment, step S300 includes step S310.
Step S310: and acquiring wave recording data before the execution of the protection action according to the fault wave recording file, and generating an analysis result that the protection action is correct when the wave recording data before the execution of the protection action meets the execution condition of the protection action and the fault information is matched with the execution process of the protection action.
Specifically, when different types of faults occur in the power system, the electrical parameter characteristics are different, and different types of protection actions need to be taken according to different electrical parameter characteristics. According to the fault recording file, the recording data before the execution of the protection action can be obtained, the electrical parameter characteristics before the execution of the protection action are obtained, and whether the electrical parameter characteristics meet the execution conditions of the protection action or not can be judged. For example, the overcurrent protection is performed in a condition that the fault current is greater than the start-up setting value. The current comprises the variable quantity of the interphase current, the self-generating and external zero sequence current, the negative sequence current and the like.
The fault information is matched with the execution process of the protection action, and means that the fault phase, the fault current and the action phase, the action element and the execution sequence of the protection action of each action element are matched. Further, the execution result of the protection action can be determined according to the recording data after the protection action is executed. For example, when the fault phase is C and the protection action is C-phase trip protection, the C-phase current is zero after the protection action is executed, which indicates that the protection action is successfully executed.
And when the recording data before the execution of the protection action meets the execution condition of the protection action and the fault information is matched with the execution process of the protection action, generating an analysis result with correct protection action, otherwise, generating an analysis result with incorrect protection action.
In the above embodiment, the analysis result of the protection action is generated according to the matching condition between the recording data before the protection action is executed and the execution condition of the protection action, and the matching condition between the fault information and the execution process of the protection action. Under the condition that the protection action is correct, the operation and maintenance personnel do not need to analyze the protection action any more; under the condition that the protection action is incorrect, operation and maintenance personnel can judge the fault condition of the protection device by combining the wave recording information and the analysis result of other protection actions, the workload of the operation and maintenance personnel can be reduced, and the efficiency is improved.
In one embodiment, referring to fig. 4, step S400 includes step S410 and step S420.
Step S410: and determining basic information of the protection event according to the fault information and the execution process of the protection action.
Step S420: and generating a protection action analysis report according to the protection action analysis result and the basic information of the protection event.
A process in which a power system fails and a protection device performs a protection action against the failure to avoid the local problem from being enlarged is referred to as a primary protection event. The basic information of the protection event includes fault interval, fault phase, fault current, fault distance measurement, protection action time, action element, fault influence and the like. Specifically, in a substation, there are incoming line intervals, outgoing line intervals, main incoming intervals, and the like, and two frameworks are separated into one interval, and generally named as intervals according to the device usage between the frameworks. After the analysis result of the protection action is generated, a protection action analysis report can be generated according to a preset template by combining the basic information of the protection event. The basic information of the protection event may be in the text of the protection action analysis report or in the attachment, and in short, the specific presentation manner of the basic information of the protection event is not limited in this embodiment.
In the above embodiment, the basic information of the protection event is listed in the protection action analysis report, so that the operation and maintenance personnel can conveniently obtain the specific information of the protection event, the operation and maintenance personnel can conveniently perform subsequent work arrangement based on the information, and the work efficiency is improved.
In one embodiment, referring to fig. 5, step S400 includes steps S430 to S450.
Step S430: and determining the operation conditions of the power system before the fault and after the protection action is executed according to the switch displacement information of the power system before the fault and after the protection action is executed.
The operation condition of the power system refers to a switch operation condition of the power system, that is, an operation mode of a main connection of the power system. According to the switch displacement information of the power system before the fault and after the protection action is executed, the operation conditions of the power system before the fault and after the protection action is executed can be determined.
Step S440: and determining the configuration condition of the protection device according to the configuration information of the protection device.
The protection device comprises a relay protection device, and the configuration information of the protection device comprises a configuration scheme, an equipment manufacturer, a model, a version number, a CT (current transformer) transformation ratio, a production date, a scheduled inspection development condition and the like of the protection device. Specifically, the types of the protective devices include PCS-943, PCS-931, PCS-923 and the like.
Step S450: and generating a protection action analysis report according to the protection action analysis result, the operation condition of the power system before the fault and after the protection action is executed and the configuration condition of the protection device.
After the analysis result of the protection action is generated, a protection action analysis report can be generated according to a preset template by combining the operation condition of the power system and the configuration condition of the protection device before the fault and after the protection action is executed. The operation condition of the power system and the configuration condition of the protection device before the fault and after the protection action are executed can be in the text of the protection action analysis report, or can be in the accessory, or one of the operation condition and the configuration condition can be in the text and the other one can be in the accessory. In short, the present embodiment does not limit the specific presentation manner of the operation condition of the power system and the configuration condition of the protection device before the fault and after the protection action is performed.
In the above embodiment, the operation conditions of the power system and the configuration conditions of the protection device before the fault and after the protection action is executed are listed in the protection action analysis report, so that the operation and maintenance personnel can conveniently obtain more information related to the protection event, the operation and maintenance personnel can conveniently perform subsequent work arrangement based on the information, and the work efficiency is improved.
In one embodiment, referring to fig. 6, step S400 includes step S410, step S430, step S440, and step S460.
Step S410: and determining basic information of the protection event according to the fault information and the execution process of the protection action.
Step S430: and determining the operation conditions of the power system before the fault and after the protection action is executed according to the switch displacement information of the power system before the fault and after the protection action is executed.
Step S440: and determining the configuration condition of the protection device according to the configuration information of the protection device.
Step S460: and generating a protection action analysis report according to the protection action analysis result, the basic information of the protection event, the operation condition of the power system before the fault and after the protection action is executed and the configuration condition of the protection device.
For specific limitations of step S410, step S430 and step S440, reference may be made to the above embodiments, which are not described herein again. After the analysis result of the protection action is generated, a protection action analysis report can be generated according to a preset template by combining the basic information of the protection event, the operation condition of the power system before the fault and after the protection action is executed and the configuration condition of the protection device. Accordingly, the present embodiment does not limit the specific presentation manner of the basic information of the protection event, the operation condition of the power system before the fault and after the protection action is performed, and the configuration condition of the protection device.
Further, the protection device constant value sheet can be listed as an accessory in the protection action analysis report.
In the embodiment, the information related to the protection event is listed in the protection action analysis report, so that the operation and maintenance personnel can conveniently obtain more information related to the protection event, the operation and maintenance personnel can conveniently perform subsequent work arrangement based on the information, and the work efficiency is improved.
In an embodiment, referring to fig. 7, after step S400, step S500 is further included.
Step S500: and sending the protection action analysis report to the wave recording master station and/or the terminal equipment.
The wave recording master station refers to a site for remotely monitoring and managing intelligent equipment of the whole power system. The terminal includes various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices. The wave recorder and the wave recording master station, and the wave recorder and the terminal equipment are communicated through a network. The protection action analysis report can be directly sent to the wave recording master station and/or the terminal equipment, or the protection action analysis report can be uploaded to a client or a website, and then the wave recording master station and/or the terminal equipment is reminded to download and check the report. In short, the present embodiment does not limit the specific transmission method of the protection action analysis report.
In the above embodiment, the protection action analysis report is sent to the wave recording master station and/or the terminal device, so that operation and maintenance personnel can conveniently and accurately obtain the relevant information of the protection event in time, arrangement of subsequent work can be quickly performed according to the execution condition of the protection action, and improvement of the power restoration efficiency is facilitated.
It should be understood that although the various steps in the flow charts of fig. 1-7 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-8 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In an embodiment, please refer to fig. 8, which provides an analysis report generating apparatus for power system protection actions, including a file obtaining module 100, an information restoring module 200, an action analyzing module 300, and a report generating module 400. The file obtaining module 100 is configured to obtain a fault recording file; the information restoration module 200 is configured to restore the execution process of the fault information and the protection action according to the fault recording file; the action analysis module 300 is used for analyzing the execution process of the protection action and generating a protection action analysis result; and a report generating module 400, configured to generate a protection action analysis report according to the protection action analysis result.
In one embodiment, the information restoration module 200 includes a failure information determination unit and a protection action determination unit. The fault information determining unit is used for acquiring recording data before and after a fault according to a fault recording file and determining fault information according to the recording data before and after the fault; the protection action determining unit is used for acquiring wave recording data before and after the execution of the protection action according to the fault wave recording file, and determining the execution process of the protection action according to the wave recording data before and after the execution of the protection action.
In one embodiment, the recording data includes phase-to-phase current, the fault information includes a fault phase, and the fault information determining unit is specifically configured to: acquiring interphase current break variables before and after a fault according to recording data before and after the fault; and determining the fault phase according to the magnitude relation of the interphase current sudden change.
In one embodiment, the action analysis module 300 is specifically configured to: and acquiring wave recording data before the execution of the protection action according to the fault wave recording file, and generating an analysis result that the protection action is correct when the wave recording data before the execution of the protection action meets the execution condition of the protection action and the fault information is matched with the execution process of the protection action.
In one embodiment, the report generation module 400 includes a basic information determination unit and a report generation unit. The basic information determining unit is used for determining the basic information of the protection event according to the fault information and the execution process of the protection action; and the report generating unit is used for generating a protection action analysis report according to the protection action analysis result and the basic information of the protection event.
In one embodiment, the report generation module 400 includes an operational condition determination unit, a configuration information determination unit, and a report generation unit. The operation condition determining unit is used for determining the operation conditions of the power system before the fault and after the protection action is executed according to the switch displacement information of the power system before the fault and after the protection action is executed; the configuration information determining unit is used for determining the configuration condition of the protection device according to the configuration information of the protection device; and the report generating unit is specifically used for generating a protection action analysis report according to the protection action analysis result, the operation condition of the power system before the fault and after the protection action is executed and the configuration condition of the protection device.
In one embodiment, the report generation module 400 includes a basic information determination unit, an operating condition determination unit, and a configuration information determination unit. The basic information determining unit is used for determining the basic information of the protection event according to the fault information and the execution process of the protection action; the operation condition determining unit is used for determining the operation conditions of the power system before the fault and after the protection action is executed according to the switch displacement information of the power system before the fault and after the protection action is executed; the configuration information determining unit is used for determining the configuration condition of the protection device according to the configuration information of the protection device; and the report generating unit is specifically used for generating a protection action analysis report according to the protection action analysis result, the basic information of the protection event, the operation condition of the power system before the fault and after the protection action is executed and the configuration condition of the protection device.
In an embodiment, please refer to fig. 9, an apparatus for generating a protection action analysis report of a power system further includes a report sending module 500, configured to send the protection action analysis report to a wave recording master station and/or a terminal device.
For specific limitations of the power system protection action analysis report generation apparatus, reference may be made to the above limitations of the power system protection action analysis report generation method, which is not described herein again. The modules in the power system protection action analysis report generation device may be implemented in whole or in part by software, hardware, or a combination thereof. The modules can be embedded in a controller in a wave recorder in a hardware form or independent of the controller in the wave recorder, and can also be stored in a memory in the wave recorder in a software form, so that the controller can call and execute the corresponding operations of the modules.
In one embodiment, a wave recorder is provided and comprises a collector and a controller, wherein the collector is connected with the controller. The collector is used for collecting fault recording data and generating a fault recording file; the controller is configured to implement the steps of any of the method embodiments described above.
Specifically, the collector collects fault recording data, generates a fault recording file, and sends the fault recording file to the controller. And the controller analyzes the fault information and the protection action execution process according to the fault recording file and generates a protection action analysis report. Furthermore, the wave recorder also comprises a memory, and the installation failure time and the failure category of the protection action analysis report can be stored, so that subsequent statistics and analysis are facilitated.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A power system protection action analysis report generation method, the method comprising:
acquiring a fault recording file;
restoring the executing process of fault information and protection actions according to the fault recording file;
analyzing the executing process of the protection action according to the fault recording file and the fault information, and generating a protection action analysis result;
and generating a protection action analysis report according to the protection action analysis result.
2. The method according to claim 1, wherein the process of restoring fault information and performing protection actions according to the fault recording file comprises:
acquiring wave recording data before and after a fault according to the fault wave recording file;
determining fault information according to the recording data before and after the fault;
acquiring wave recording data before and after the execution of the protection action according to the fault wave recording file;
and determining the execution process of the protection action according to the recording data before and after the execution of the protection action.
3. The method of claim 2, wherein the recording data includes phase-to-phase current, the fault information includes a fault phase, and the determining the fault information from the recording data before and after the fault includes:
acquiring interphase current break variables before and after a fault according to recording data before and after the fault;
and determining the fault phase according to the magnitude relation of the interphase current sudden change.
4. The method of claim 1, wherein the execution of the protection action comprises action time, action element, and action phase.
5. The method according to claim 1, wherein the analyzing the execution process of the protection action according to the fault recording file and the fault information and generating a protection action analysis result comprises:
and acquiring wave recording data before the execution of the protection action according to the fault wave recording file, and generating an analysis result that the protection action is correct when the wave recording data before the execution of the protection action meets the execution condition of the protection action and the fault information is matched with the execution process of the protection action.
6. The method of claim 1, wherein generating a protection action analysis report based on the protection action analysis result comprises:
determining basic information of a protection event according to the fault information and the execution process of the protection action;
and generating a protection action analysis report according to the protection action analysis result and the basic information of the protection event.
7. The method of claim 1, wherein generating a protection action analysis report based on the protection action analysis result comprises:
determining the operation conditions of the power system before the fault and after the protection action is executed according to the switch displacement information of the power system before the fault and after the protection action is executed;
determining the configuration condition of the protection device according to the configuration information of the protection device;
and generating a protection action analysis report according to the protection action analysis result, the operation condition of the power system before the fault and after the protection action is executed and the configuration condition of the protection device.
8. The method according to any one of claims 1-7, wherein after generating the protection action analysis report, further comprising:
and sending the protection action analysis report to a wave recording master station and/or terminal equipment.
9. A power system protection action analysis report generation device is characterized by comprising
The file acquisition module is used for acquiring a fault recording file;
the information reduction module is used for reducing the fault information and the execution process of the protection action according to the fault recording file;
the action analysis module is used for analyzing the execution process of the protection action according to the fault recording file and the fault information and generating a protection action analysis result;
and the report generating module is used for generating a protection action analysis report according to the protection action analysis result.
10. The wave recorder is characterized by comprising a collector and a controller, wherein the collector is connected with the controller; the collector is used for collecting fault recording data and generating a fault recording file; the controller is configured to implement the steps of the method of any one of claims 1 to 8.
CN202011009928.8A 2020-09-23 2020-09-23 Power system protection action analysis report generation method and device and wave recorder Pending CN112418593A (en)

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