Power grid fault intelligent analysis method and system

Abstract

The invention is suitable for the technical field of power grid supply fault analysis, and provides a power grid fault intelligent analysis method and system, and the method comprises the steps: generating a target power change broken line graph through monitoring the working power change condition of target power equipment in a specific power continuous rising stage in real time; and analyzing whether there is an abnormal change break point in the target power change broken line graph. When the power equipment is in the continuous power rising stage, and when the instantaneous power rising is insufficient, whether the power equipment is caused by the fault of continuous insufficient power supply of the power grid can be accurately judged. In the subsequent working process of the power equipment, the moment when power supply is insufficient in the continuous power rising stage can be recognized in advance, proper power supplement is allocated to the power grid, and the problems of starting interruption or discontinuous working and the like of the power equipment are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power grid supply fault analysis, and in particular relates to a power grid fault intelligent analysis method and system. Background Art

[0002] As the infrastructure for powering industrial equipment, the reliability and stability of the power grid are crucial to the continuity and safety of industrial production. In modern industry, many devices require high-power power supply, especially during the startup and load increase stages, when these devices have particularly strict requirements on power supply. At present, when powering high-power industrial equipment, the power grid usually relies on preset power supply plans and load forecasts. However, with the diversification and complexity of industrial equipment, the power grid faces many challenges in the actual power supply process.

[0003] Existing technologies mainly meet the power demand of high-power equipment through load forecasting and conventional power supply scheduling. However, these methods have obvious shortcomings when facing the stage of continuous power increase of high-power equipment. Specifically, when industrial equipment is in the stage of continuous power increase, due to the lack of flexibility and real-time performance of the power supply plan of the power grid, it is often impossible to adjust the power supply in time, resulting in insufficient power supply to the power equipment during the instantaneous power increase process. This insufficient power supply will not only affect the normal startup and operation of the equipment, but may also cause frequent equipment shutdowns, reduced production efficiency, and even cause safety hazards.

[0004] In addition, in the existing technology, the power grid lacks accurate real-time calculation methods when allocating power to industrial equipment. Even if the power shortage can be identified, it is difficult to achieve accurate power replenishment, which often leads to either failure to solve the power shortage or excessive power allocation, increasing the burden and operating costs of the power grid. Summary of the invention

[0005] The purpose of the present invention is to provide a method and system for intelligent analysis of power grid faults, aiming to solve the problems raised in the background technology.

[0006] The present invention is implemented as follows: a method for intelligent analysis of power grid faults, the method comprising:

[0007] Monitor the working power changes of target power equipment in a specific power continuous rising stage in real time, generate a target power change line graph, and analyze whether there are abnormal change inflection points in the target power change line graph;

[0008] If it is determined that there is an abnormal inflection point in the target power change line graph, the power receiving situation of the target power equipment in the specific power continuous rising stage is obtained, and a power data change line graph is generated according to the power receiving situation;

[0009] Determine the calibration time point corresponding to the abnormal inflection point, and analyze whether the fluctuations corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent. If they are consistent, determine that the calibration time point is the power pre-replenishment time point;

[0010] Determine the amount of power replenishment required at the power pre-replenishment time point, and mark the target power equipment. When the power of the subsequent target power equipment is in a specific power continuous rising stage, allocate the required power replenishment amount for it at the power pre-replenishment time point.

[0011] As a further limitation of the technical solution of the embodiment of the present invention, the steps of real-time monitoring the working power change of the target power equipment in a specific power continuous rising stage, generating a target power change line graph, and analyzing whether there is an abnormal change inflection point in the target power change line graph include:

[0012] Real-time acquisition of the working power value of the target power equipment in a specific power continuous rising stage, and integration of all the working power values ​​acquired in the specific power continuous rising stage to obtain a target power change line graph;

[0013] Retrieving a preset power change line graph, and comparing the target power change line graph with the preset power change line graph;

[0014] When a point significantly lower than the preset power change line graph appears in the target power change line graph, it is determined that there is an abnormal change point in the target power change line graph.

[0015] As a further limitation of the technical solution of the embodiment of the present invention, if it is determined that there is an abnormal inflection point in the target power change line graph, the steps of obtaining the power receiving situation of the target power equipment in a specific power continuous rising stage, and generating a power data change line graph according to the power receiving situation include:

[0016] If it is determined that there is an abnormal inflection point in the target power change line graph, the power receiving value of the target power equipment in the specific power continuous rising stage is obtained;

[0017] Integrate all power receiving values ​​obtained during the specific power continuous rising stage to obtain a power data change line graph;

[0018] The target power change line graph and the power data change line graph are both XY axis line graphs, and the X axis of the target power change line graph and the power data change line graph is the time when the target power equipment is in a specific power continuous rising stage, and the Y axis of the target power change line graph and the power data change line graph is the working power value and the power receiving value respectively.

[0019] As a further limitation of the technical solution of the embodiment of the present invention, determining the calibration time point corresponding to the abnormal inflection point, and analyzing whether the fluctuation conditions corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent, if consistent, determining the calibration time point as the power pre-replenishment time point includes:

[0020] Determine the calibration time point corresponding to the mutation turning point;

[0021] Intercepting partial graphs of a preset time period before and after a marked time point in the target power change line graph and the power data change line graph, and obtaining a first comparison line graph and a second comparison line graph;

[0022] Analyze the similarity between the first comparison line graph and the second comparison line graph. If the similarity is greater than a preset threshold, determine that the fluctuations corresponding to the calibrated time points in the target power change line graph and the power data change line graph are consistent, and determine that the calibrated time points are the power pre-replenishment time points.

[0023] As a further limitation of the technical solution of the embodiment of the present invention, the step of determining the amount of power replenishment required at the power pre-replenishment time point, marking the target power equipment, and allocating the required amount of power replenishment for the target power equipment at the power pre-replenishment time point when the power of the target power equipment is in a specific power continuous rising stage subsequently includes:

[0024] Determine the operating time length of the target power equipment from the specific power continuous rising stage to the calibration time point, and analyze the preset power value corresponding to the operating time length in the preset power change line graph;

[0025] Respectively obtain the working power value and the power receiving value corresponding to the power pre-replenishment time point in the target power change line graph and the power data change line graph;

[0026] Retrieve the calculation formula for the amount of electricity replenishment and calculate the amount of electricity replenishment required at the time point of pre-electricity replenishment;

[0027] The target power equipment is marked and continuously monitored, and during the subsequent operation of the target power equipment, when it is found that the power of the target power equipment is in a specific power continuous rising stage, the required power replenishment amount is allocated to it at the power pre-replenishment time point.

[0028] As a further limitation of the technical solution of the embodiment of the present invention, the calculation formula of the electric power supplement amount is:

[0029]

[0030] Where S is the amount of power replenishment required at the power pre-replenishment time point when the target power equipment is in a specific power continuous increase stage, P 预is the preset power value corresponding to the running time length in the preset power change line graph, P 工 is the working power value corresponding to the power pre-supplement time point in the target power change line chart, Q 工 It is the power receiving value corresponding to the power pre-replenishment time point in the power data change line graph.

[0031] A power grid fault intelligent analysis system, the system comprising: an abnormal change inflection point determination module, a power data change line graph generation module, a power pre-replenishment time point determination module and a power replenishment amount determination module, wherein:

[0032] The abnormal change inflection point determination module is used to monitor the working power change of the target power equipment in a specific power continuous rising stage in real time, generate a target power change line graph, and analyze whether there is an abnormal change inflection point in the target power change line graph;

[0033] A power data change line graph generation module is used to obtain the power receiving situation of the target power equipment in a specific power continuous rising stage if it is determined that there is an abnormal change inflection point in the target power change line graph, and generate a power data change line graph according to the power receiving situation;

[0034] The power pre-supplement time point determination module is used to determine the calibration time point corresponding to the abnormal change inflection point, and analyze whether the fluctuation conditions corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent. If they are consistent, the calibration time point is determined to be the power pre-supplement time point;

[0035] The power replenishment amount determination module is used to determine the power replenishment amount required at the power pre-replenishment time point and mark the target power equipment. When the power of the subsequent target power equipment is in a specific power continuous rising stage, the required power replenishment amount is allocated to it at the power pre-replenishment time point.

[0036] As a further limitation of the technical solution of the embodiment of the present invention, the mutation inflection point determination module specifically includes:

[0037] A target power variation line graph generating unit is used to obtain the working power value of the target power equipment in a specific power continuous rising stage in real time, and integrate all the working power values ​​obtained in the specific power continuous rising stage to obtain a target power variation line graph;

[0038] A line graph comparison unit, used to retrieve a preset power change line graph, and compare the target power change line graph with the preset power change line graph;

[0039] The abnormal change inflection point determination unit is used to determine that there is an abnormal change inflection point in the target power change line graph when a inflection point significantly lower than a preset power change line graph appears in the target power change line graph.

[0040] As a further limitation of the technical solution of the embodiment of the present invention, the power data change line graph generation module specifically includes:

[0041] A power receiving value acquisition unit, configured to acquire a power receiving value of a target power device in a specific power continuous rising stage if it is determined that there is an abnormal change inflection point in the target power change line graph;

[0042] A power data change line graph generating unit is used to integrate all power receiving values ​​obtained in a specific power continuous rising stage to obtain a power data change line graph;

[0043] The target power change line graph and the power data change line graph are both XY axis line graphs, and the X axis of the target power change line graph and the power data change line graph is the time when the target power equipment is in a specific power continuous rising stage, and the Y axis of the target power change line graph and the power data change line graph is the working power value and the power receiving value respectively.

[0044] As a further limitation of the technical solution of the embodiment of the present invention, the power pre-replenishment time point determination module specifically includes:

[0045] A calibration time point determination unit, used to determine the calibration time point corresponding to the mutation turning point;

[0046] A local graph interception unit, used to intercept the local graphs of the target power change line graph and the power data change line graph in a preset time period before and after the marked time point, and obtain a first comparison line graph and a second comparison line graph;

[0047] The graphic comparison unit is used to analyze the similarity between the first comparison line graph and the second comparison line graph. If the similarity is greater than a preset threshold, it is determined that the fluctuations corresponding to the calibrated time points in the target power change line graph and the power data change line graph are consistent, and the calibrated time points are determined to be the power pre-replenishment time points.

[0048] Compared with the prior art, the present invention generates a target power change line graph by real-time monitoring the working power change of the target power equipment in a specific power continuous rising stage, and analyzes whether there is an abnormal change inflection point in the target power change line graph; if it is determined that there is an abnormal change inflection point in the target power change line graph, the power reception situation of the target power equipment in the specific power continuous rising stage is obtained, and a power data change line graph is generated according to the power reception situation; the calibration time point corresponding to the abnormal change inflection point is determined, and the fluctuation situation corresponding to the calibration time point in the target power change line graph and the power data change line graph is analyzed to be consistent, if consistent, the calibration time point is determined to be the power pre-supplement time point; the power replenishment amount required at the power pre-supplement time point is determined, and the target power equipment is marked, and when the power of the subsequent target power equipment is in a specific power continuous rising stage, the required power replenishment amount is allocated to it at the power pre-supplement time point. When the power equipment is in the power continuous rising stage, when the instantaneous power boost is insufficient, it can accurately determine whether it is caused by the failure of insufficient power supply in the power grid. In the subsequent operation of the power equipment, it is possible to identify in advance the moment of insufficient power supply during the continuous power increase stage, and allocate appropriate power to the power grid to avoid problems such as startup interruption or discontinuous operation of the power equipment. In addition, the amount of power replenishment allocated to the power grid is pre-calculated so that the amount of power replenishment can just meet the needs of the power equipment and will not overflow and increase the burden on the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A flowchart of a method provided by an embodiment of the present invention;

[0050] Figure 2 A flow chart of analyzing whether there is an abnormal change inflection point in the target power change line graph in the method provided by the embodiment of the present invention;

[0051] Figure 3 A flow chart of generating a power data change line graph according to power receiving conditions in the method provided in an embodiment of the present invention;

[0052] Figure 4 A flow chart of determining a time point for pre-supplementing electricity in a method provided in an embodiment of the present invention;

[0053] Figure 5 A flow chart of determining the amount of power replenishment required at a power pre-replenishment time point in the method provided in an embodiment of the present invention;

[0054] Figure 6 An application architecture diagram of a system provided by an embodiment of the present invention;

[0055] Figure 7 A structural block diagram of a mutation inflection point determination module in a system provided by an embodiment of the present invention;

[0056] Figure 8 A structural block diagram of a power data change line graph generation module in a system provided by an embodiment of the present invention;

[0057] Fig. 9 This is a structural block diagram of a module for determining a time point for pre-supplying electric power in a system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0059] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script.

[0060] Figure 1 A flow chart of a method provided by an embodiment of the present invention is shown.

[0061] Specifically, a method for intelligent analysis of power grid faults includes the following steps:

[0062] Step S100, real-time monitoring of the working power change of the target power equipment in a specific power continuous rising stage, generating a target power change line graph, and analyzing whether there is an abnormal change inflection point in the target power change line graph.

[0063] Specifically, Figure 2 A flow chart is shown for analyzing whether there is an abnormal inflection point in the target power variation line graph.

[0064] Among them, real-time monitoring of the working power change of the target power equipment in a specific power continuous rising stage, generating a target power change line graph, and analyzing whether there is an abnormal change inflection point in the target power change line graph specifically includes the following steps:

[0065] Step S101, obtaining in real time the working power value of the target power equipment in a specific power continuous rising stage, and integrating all the working power values ​​obtained in the specific power continuous rising stage to obtain a target power change line graph;

[0066] Step S102, calling a preset power change line graph, and comparing the target power change line graph with the preset power change line graph;

[0067] Step S103, when a point significantly lower than the preset power change line graph appears in the target power change line graph, it is determined that there is an abnormal change point in the target power change line graph.

[0068] In the embodiment of the present invention, the specific power continuous rising stage of the target power equipment generally refers to the startup stage of the target power equipment, or the working stage of entering a high-power process from a low-power process. It can be understood that under the ideal power supply state, the working power of the target power equipment in the specific power continuous rising stage rises steadily in a curve shape;

[0069] The target electric power equipment is equipped with a power detector, and the power detector can continuously monitor the real-time working power value of the target electric power equipment.

[0070] The preset power change line graph is pre-set by a person skilled in the art, based on the power change record of the target power equipment in the specific power continuous rising stage under the ideal power supply state, and the recording time length of the preset power change line graph is the same as that of the target power change line graph;

[0071] The abnormal inflection point indicates that the difference between the working power value at a certain moment in the target power change line graph and the preset working power value at the same moment in the preset power change line graph is greater than the preset value, and the preset value is pre-set by the staff.

[0072] Furthermore, the power grid fault intelligent analysis method further comprises the following steps:

[0073] Step S200, if it is determined that there is an abnormal inflection point in the target power change line graph, the power receiving situation of the target power device in a specific power continuous rising stage is obtained, and a power data change line graph is generated according to the power receiving situation.

[0074] Specifically, Figure 3 A flow chart for generating a power data variation line graph according to the power receiving situation is shown.

[0075] If it is determined that there is an abnormal inflection point in the target power change line graph, obtaining the power receiving situation of the target power equipment in a specific power continuous rising stage, and generating a power data change line graph according to the power receiving situation specifically includes the following steps:

[0076] Step S201, if it is determined that there is an abnormal inflection point in the target power change line graph, the power receiving value of the target power equipment in a specific power continuous rising stage is obtained;

[0077] Step S202, integrating all power receiving values ​​obtained during the specific power continuous rising stage to obtain a power data change line graph.

[0078] The target power change line graph and the power data change line graph are both XY axis line graphs, and the X axis of the target power change line graph and the power data change line graph is the time when the target power equipment is in a specific power continuous rising stage, and the Y axis of the target power change line graph and the power data change line graph is the working power value and the power receiving value respectively.

[0079] In an embodiment of the present invention, the target power device is equipped with a power monitor, and the power monitor is used to continuously monitor the power receiving value received by the target power device when it is working, and the recording time length of the power data change line graph and the target power change line graph is the same;

[0080] It can be understood that when the power supply of the power grid where the target power equipment is located is in an ideal state, as the target power equipment continues to work in the specific power continuous increase stage, the power data change line graph corresponding to the target power equipment should also rise steadily in the shape of a curve.

[0081] Furthermore, the power grid fault intelligent analysis method further comprises the following steps:

[0082] Step S300, determine the calibration time point corresponding to the abnormal inflection point, and analyze whether the fluctuation conditions corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent. If they are consistent, determine that the calibration time point is the power pre-replenishment time point.

[0083] Specifically, Figure 4 A flow chart for determining the electricity pre-replenishment time point is shown.

[0084] Among them, determining the calibration time point corresponding to the abnormal inflection point, and analyzing whether the fluctuation conditions corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent, if they are consistent, determining the calibration time point as the power pre-replenishment time point specifically includes the following steps:

[0085] Step S301, determining the calibration time point corresponding to the mutation turning point;

[0086] Step S302, intercepting partial graphs of a preset time period before and after a marked time point in the target power change line graph and the power data change line graph, and obtaining a first comparison line graph and a second comparison line graph;

[0087] Step S303, analyze the similarity between the first comparison line graph and the second comparison line graph. If the similarity is greater than a preset threshold, determine that the fluctuations corresponding to the calibrated time points in the target power change line graph and the power data change line graph are consistent, and determine that the calibrated time points are the power pre-replenishment time points.

[0088] In the embodiment of the present invention, when observing the working process of multiple specific power continuous rising stages of the target power equipment, those skilled in the art found that the insufficient instantaneous power boost of the target power equipment is usually caused by insufficient continuous power supply of the power grid where the target power equipment is located, that is, the power grid where the target power equipment is located has a fault defect of insufficient continuous power supply. In the present application, by comparing the local graphs of the target power change line graph and the power data change line graph in the preset time period before and after the marked time point, it can be determined whether the reason for the insufficient instantaneous power boost of the target power equipment is insufficient continuous power supply;

[0089] Specifically, mature graphic comparison technology in the prior art (such as mean square error) can be used to compare the similarity between the first comparison line graph and the second comparison line graph. If the similarity between the two is greater than a preset threshold, it is determined that the fluctuations corresponding to the calibrated time point in the target power change line graph and the power data change line graph are consistent, and the calibrated time point is determined to be the power pre-replenishment time point.

[0090] Furthermore, the power grid fault intelligent analysis method further comprises the following steps:

[0091] Step S400, determine the power replenishment amount required at the power pre-replenishment time point, and mark the target power equipment, and when the power of the subsequent target power equipment is in a specific power continuous rising stage, allocate the required power replenishment amount for it at the power pre-replenishment time point.

[0092] Specifically, Figure 5 A flow chart for determining the amount of electric power replenishment required at the electric power pre-replenishment time point is shown.

[0093] Among them, determining the amount of power replenishment required at the power pre-replenishment time point, marking the target power equipment, and when the power of the subsequent target power equipment is in a specific power continuous rising stage, allocating the required power replenishment amount for it at the power pre-replenishment time point specifically includes the following steps:

[0094] Step S401, determining the operating time length of the target power equipment from the specific power continuous rising stage to the calibration time point, and analyzing the preset power value corresponding to the operating time length in the preset power change line graph;

[0095] Step S402, respectively obtaining the working power value and the power receiving value corresponding to the power pre-replenishment time point in the target power change line graph and the power data change line graph;

[0096] Step S403, calling the electric power replenishment amount calculation formula, and calculating the electric power replenishment amount required at the electric power pre-replenishment time point;

[0097] Step S404, marking and continuously monitoring the target power equipment, and in the subsequent operation process of the target power equipment, when it is found that the power of the target power equipment is in a specific power continuous rising stage, the required power replenishment amount is allocated to it at the power pre-replenishment time point.

[0098] The calculation formula for the amount of electricity replenishment is:

[0099] Where S is the amount of power replenishment required at the power pre-replenishment time point when the target power equipment is in a specific power continuous increase stage, P 预 is the preset power value corresponding to the running time length in the preset power change line graph, P 工 is the working power value corresponding to the power pre-supplement time point in the target power change line chart, Q 工 It is the power receiving value corresponding to the power pre-replenishment time point in the power data change line graph.

[0100] In the embodiment of the present invention, when the target power equipment is in a specific power continuous rising stage, the amount of power replenishment required at the power pre-replenishment time point can be determined by the degree of change of the target power change line graph and the abnormal change inflection point in the preset power change line graph. Specifically, the degree of decrease of the working power value corresponding to the abnormal change inflection point relative to the preset working power value corresponding to the power pre-replenishment time point in the preset power change line graph is the degree of decrease of the power value that the target power equipment should receive at the power pre-replenishment time point and the power value actually received;

[0101] According to the above basis, through the power replenishment calculation formula, combined with the target power change line chart, the preset power change line chart and the power data change line chart, the power replenishment required by the target power equipment at the power pre-replenishment time point in the specific power continuous rise stage is calculated. And in the subsequent working process of the target power equipment, it is continuously monitored for power. When it is found that the power change of the target power equipment is in line with the trend of the target power change line chart, a power allocation request is made to the power grid in advance to provide the target power equipment with the required power replenishment at the power pre-replenishment time point.

[0102] Through the above technical solution, when the power equipment is in the stage of continuous power increase, when the instantaneous power increase is insufficient, it can be accurately judged whether it is due to the failure of insufficient continuous power supply in the power grid. In the subsequent operation of the power equipment, it can pre-identify the moment of insufficient power supply in the stage of continuous power increase, and allocate appropriate power supplement to the power grid to avoid problems such as startup interruption or discontinuous operation of the power equipment.

[0103] In addition, the amount of additional power allocated to the power grid is calculated in advance so that the amount of additional power can just meet the needs of the power equipment and will not overflow and increase the burden on the power grid.

[0104] Furthermore, Figure 6 The application architecture diagram of the system provided by the embodiment of the present invention is shown.

[0105] In another preferred embodiment of the present invention, a power grid fault intelligent analysis system includes:

[0106] The abnormal inflection point determination module 100 is used to monitor in real time the working power change of the target power equipment in a specific power continuous rising stage, generate a target power change line graph, and analyze whether there is an abnormal inflection point in the target power change line graph.

[0107] Specifically, Figure 7 The structure block diagram of the mutation inflection point determination module 100 in the system provided by an embodiment of the present invention is shown.

[0108] Among them, in the preferred embodiment provided by the present invention, the mutation turning point determination module 100 specifically includes:

[0109] The target power variation line graph generating unit 101 is used to obtain the working power value of the target power equipment in a specific power continuous rising stage in real time, and integrate all the working power values ​​obtained in the specific power continuous rising stage to obtain the target power variation line graph;

[0110] The line graph comparison unit 102 is used to retrieve a preset power change line graph and compare the target power change line graph with the preset power change line graph;

[0111] The abnormal change inflection point determination unit 103 is used to determine that there is an abnormal change inflection point in the target power change line graph when a inflection point significantly lower than the preset power change line graph appears in the target power change line graph.

[0112] In the embodiment of the present invention, the specific power continuous rising stage of the target power equipment generally refers to the startup stage of the target power equipment, or the working stage of entering a high-power process from a low-power process. It can be understood that under the ideal power supply state, the working power of the target power equipment in the specific power continuous rising stage rises steadily in a curve shape;

[0113] The target electric power equipment is equipped with a power detector, and the power detector can continuously monitor the real-time working power value of the target electric power equipment.

[0114] The preset power change line graph is pre-set by a person skilled in the art, based on the power change record of the target power equipment in the specific power continuous rising stage under the ideal power supply state, and the recording time length of the preset power change line graph is the same as that of the target power change line graph;

[0115] The abnormal inflection point indicates that the difference between the working power value at a certain moment in the target power change line graph and the preset working power value at the same moment in the preset power change line graph is greater than the preset value, and the preset value is pre-set by the staff.

[0116] Furthermore, the power grid fault intelligent analysis system also includes:

[0117] The power data change line graph generation module 200 is used to obtain the power receiving status of the target power device in a specific power continuous rising stage if it is determined that there is an abnormal change inflection point in the target power change line graph, and generate a power data change line graph based on the power receiving status.

[0118] Specifically, Figure 8 It shows a structural block diagram of the power data change line graph generating module 200 in the system provided by an embodiment of the present invention.

[0119] Among them, in the preferred embodiment provided by the present invention, the power data change line graph generating module 200 specifically includes:

[0120] The power receiving value acquisition unit 201 is used to acquire the power receiving value of the target power device in a specific power continuous rising stage if it is determined that there is an abnormal change inflection point in the target power change line graph;

[0121] The power data variation line graph generating unit 202 is used to integrate all power receiving values ​​obtained in the specific power continuous rising stage to obtain a power data variation line graph;

[0122] The target power change line graph and the power data change line graph are both XY axis line graphs, and the X axis of the target power change line graph and the power data change line graph is the time when the target power equipment is in a specific power continuous rising stage, and the Y axis of the target power change line graph and the power data change line graph is the working power value and the power receiving value respectively.

[0123] In an embodiment of the present invention, the target power device is equipped with a power monitor, and the power monitor is used to continuously monitor the power receiving value received by the target power device when it is working, and the recording time length of the power data change line graph and the target power change line graph is the same;

[0124] It can be understood that when the power supply of the power grid where the target power equipment is located is in an ideal state, as the target power equipment continues to work in the specific power continuous increase stage, the power data change line graph corresponding to the target power equipment should also rise steadily in the shape of a curve.

[0125] Furthermore, the power grid fault intelligent analysis system also includes:

[0126] The power pre-replenishment time point determination module 300 is used to determine the calibration time point corresponding to the abnormal change inflection point, and analyze whether the fluctuation conditions corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent. If they are consistent, the calibration time point is determined to be the power pre-replenishment time point;

[0127] The power replenishment amount determination module 400 is used to determine the power replenishment amount required at the power pre-replenishment time point and mark the target power equipment. When the power of the subsequent target power equipment is in a specific power continuous rising stage, the required power replenishment amount is allocated to it at the power pre-replenishment time point.

[0128] Specifically, Fig. 9 It shows a structural block diagram of the power pre-replenishment time point determination module 300 in the system provided by an embodiment of the present invention.

[0129] Among them, in the preferred embodiment provided by the present invention, the power pre-replenishment time point determination module 300 specifically includes:

[0130] The calibration time point determination unit 301 is used to determine the calibration time point corresponding to the mutation turning point;

[0131] The local graph interception unit 302 is used to intercept the local graphs of the target power change line graph and the power data change line graph in the preset time period before and after the marked time point, and obtain the first comparison line graph and the second comparison line graph;

[0132] The graphic comparison unit 303 is used to analyze the similarity between the first comparison line graph and the second comparison line graph. If the similarity is greater than a preset threshold, it is determined that the fluctuations corresponding to the calibrated time points in the target power change line graph and the power data change line graph are consistent, and the calibrated time points are determined to be the power pre-replenishment time points.

[0133] In the embodiment of the present invention, when observing the working process of multiple specific power continuous rising stages of the target power equipment, those skilled in the art found that the insufficient instantaneous power boost of the target power equipment is usually caused by insufficient continuous power supply of the power grid where the target power equipment is located, that is, the power grid where the target power equipment is located has a fault defect of insufficient continuous power supply. In the present application, by comparing the local graphs of the target power change line graph and the power data change line graph in the preset time period before and after the marked time point, it can be determined whether the reason for the insufficient instantaneous power boost of the target power equipment is insufficient continuous power supply;

[0134] Specifically, mature graphic comparison technology in the prior art (such as mean square error) can be used to compare the similarity between the first comparison line graph and the second comparison line graph. If the similarity between the two is greater than a preset threshold, it is determined that the fluctuations corresponding to the calibrated time point in the target power change line graph and the power data change line graph are consistent, and the calibrated time point is determined to be the power pre-replenishment time point.

[0135] When the target power equipment is in a specific power continuous rising stage, the amount of power replenishment required at the power pre-replenishment time point can be determined by the degree of change of the target power change line graph and the abnormal inflection point in the preset power change line graph. Specifically, the degree of decrease of the working power value corresponding to the abnormal inflection point relative to the preset working power value corresponding to the power pre-replenishment time point in the preset power change line graph is the degree of decrease of the power value that the target power equipment should receive at the power pre-replenishment time point and the power value actually received;

[0136] According to the above basis, through the power replenishment calculation formula, combined with the target power change line chart, the preset power change line chart and the power data change line chart, the power replenishment required by the target power equipment at the power pre-replenishment time point in the specific power continuous rise stage is calculated. And in the subsequent working process of the target power equipment, it is continuously monitored for power. When it is found that the power change of the target power equipment is in line with the trend of the target power change line chart, a power allocation request is made to the power grid in advance to provide the target power equipment with the required power replenishment at the power pre-replenishment time point.

[0137] Through the above technical solution, when the power equipment is in the stage of continuous power increase, when the instantaneous power increase is insufficient, it can be accurately judged whether it is due to the failure of insufficient continuous power supply in the power grid. In the subsequent operation of the power equipment, it can pre-identify the moment of insufficient power supply in the stage of continuous power increase, and allocate appropriate power supplement to the power grid to avoid problems such as startup interruption or discontinuous operation of the power equipment.

[0138] In addition, the amount of additional power allocated to the power grid is calculated in advance so that the amount of additional power can just meet the needs of the power equipment and will not overflow and increase the burden on the power grid.

[0139] It should be understood that, although each step in the flow chart of each embodiment of the present invention is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0140] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0141] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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 specification.

[0142] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0143] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for intelligent analysis of power grid faults, characterized in that: The method comprises: Monitor the working power changes of target power equipment in a specific power continuous rising stage in real time, generate a target power change line graph, and analyze whether there are abnormal change inflection points in the target power change line graph; If it is determined that there is an abnormal inflection point in the target power change line graph, the power receiving situation of the target power equipment in the specific power continuous rising stage is obtained, and a power data change line graph is generated according to the power receiving situation; Determine the calibration time point corresponding to the abnormal inflection point, and analyze whether the fluctuations corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent. If they are consistent, determine that the calibration time point is the power pre-replenishment time point; Determine the amount of power replenishment required at the power pre-replenishment time point, and mark the target power equipment. When the power of the subsequent target power equipment is in a specific power continuous rising stage, allocate the required power replenishment amount for it at the power pre-replenishment time point.

2. The method for intelligent analysis of power grid faults according to claim 1, characterized in that: The steps of real-time monitoring the working power change of the target power equipment in a specific power continuous rising stage, generating a target power change line graph, and analyzing whether there is an abnormal change inflection point in the target power change line graph include: Real-time acquisition of the working power value of the target power equipment in a specific power continuous rising stage, and integration of all the working power values ​​acquired in the specific power continuous rising stage to obtain a target power change line graph; Retrieving a preset power change line graph, and comparing the target power change line graph with the preset power change line graph; When a break point that is significantly lower than the preset power change line graph appears in the target power change line graph, it is determined that there is an abnormal break point in the target power change line graph.

3. The method for intelligent analysis of power grid faults according to claim 2, characterized in that: If it is determined that there is an abnormal inflection point in the target power change line graph, the steps of obtaining the power receiving situation of the target power equipment in a specific power continuous rising stage, and generating a power data change line graph according to the power receiving situation include: If it is determined that there is an abnormal inflection point in the target power change line graph, the power receiving value of the target power equipment in the specific power continuous rising stage is obtained; Integrate all power receiving values ​​obtained during the specific power continuous increase stage to obtain a power data change line graph; The target power change line graph and the power data change line graph are both XY axis line graphs, and the X axis of the target power change line graph and the power data change line graph is the time when the target power equipment is in a specific power continuous rising stage, and the Y axis of the target power change line graph and the power data change line graph is the working power value and the power receiving value respectively.

4. The method for intelligent analysis of power grid faults according to claim 3, characterized in that: Determine the calibration time point corresponding to the abnormal inflection point, and analyze whether the fluctuation conditions corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent. If they are consistent, the steps of determining the calibration time point as the power pre-replenishment time point include: Determine the calibration time point corresponding to the mutation turning point; Intercepting partial graphs of a preset time period before and after a marked time point in the target power change line graph and the power data change line graph, and obtaining a first comparison line graph and a second comparison line graph; Analyze the similarity between the first comparison line graph and the second comparison line graph. If the similarity is greater than a preset threshold, determine that the fluctuations corresponding to the calibrated time points in the target power change line graph and the power data change line graph are consistent, and determine that the calibrated time points are the power pre-replenishment time points.

5. The method for intelligent analysis of power grid faults according to claim 4, characterized in that: The steps of determining the amount of power replenishment required at the power pre-replenishment time point, marking the target power equipment, and allocating the required amount of power replenishment for the target power equipment at the power pre-replenishment time point when the power of the target power equipment is in a specific power continuous rising stage subsequently include: Determine the operating time length of the target power equipment from the specific power continuous rising stage to the calibration time point, and analyze the preset power value corresponding to the operating time length in the preset power change line graph; Respectively obtain the working power value and the power receiving value corresponding to the power pre-replenishment time point in the target power change line graph and the power data change line graph; Retrieve the calculation formula for the amount of electricity replenishment and calculate the amount of electricity replenishment required at the time point of pre-electricity replenishment; The target power equipment is marked and continuously monitored, and during the subsequent operation of the target power equipment, when it is found that the power of the target power equipment is in a specific power continuous rising stage, the required power replenishment amount is allocated to it at the power pre-replenishment time point.

6. The method for intelligent analysis of power grid faults according to claim 1, characterized in that: The calculation formula for the amount of electricity replenishment is: Where S is the amount of power replenishment required at the power pre-replenishment time point when the target power equipment is in a specific power continuous increase stage, P 预 is the preset power value corresponding to the running time length in the preset power change line graph, P 工 is the working power value corresponding to the power pre-supplement time point in the target power change line chart, Q 工 It is the power receiving value corresponding to the power pre-replenishment time point in the power data change line graph.

7. A power grid fault intelligent analysis system, characterized in that: The system comprises: an abnormal change inflection point determination module, an electric power data change line graph generation module, an electric power pre-replenishment time point determination module and an electric power replenishment amount determination module, wherein: The abnormal change inflection point determination module is used to monitor the working power change of the target power equipment in a specific power continuous rising stage in real time, generate a target power change line graph, and analyze whether there is an abnormal change inflection point in the target power change line graph; A power data change line graph generation module is used to obtain the power receiving situation of the target power equipment in a specific power continuous rising stage if it is determined that there is an abnormal change inflection point in the target power change line graph, and generate a power data change line graph according to the power receiving situation; The power pre-supplement time point determination module is used to determine the calibration time point corresponding to the abnormal change inflection point, and analyze whether the fluctuation conditions corresponding to the calibration time point in the target power change line graph and the power data change line graph are consistent. If they are consistent, the calibration time point is determined to be the power pre-supplement time point; The power replenishment amount determination module is used to determine the power replenishment amount required at the power pre-replenishment time point and mark the target power equipment. When the power of the subsequent target power equipment is in a specific power continuous rising stage, the required power replenishment amount is allocated to it at the power pre-replenishment time point.

8. The power grid fault intelligent analysis system according to claim 7, characterized in that: The mutation turning point determination module specifically includes: A target power variation line graph generating unit is used to obtain the working power value of the target power equipment in a specific power continuous rising stage in real time, and integrate all the working power values ​​obtained in the specific power continuous rising stage to obtain a target power variation line graph; A line graph comparison unit, used to retrieve a preset power change line graph, and compare the target power change line graph with the preset power change line graph; The abnormal change inflection point determination unit is used to determine that there is an abnormal change inflection point in the target power change line graph when a inflection point significantly lower than a preset power change line graph appears in the target power change line graph.

9. The power grid fault intelligent analysis system according to claim 8, characterized in that: The power data change line graph generation module specifically includes: A power receiving value acquisition unit, configured to acquire a power receiving value of a target power device in a specific power continuous rising stage if it is determined that there is an abnormal change inflection point in the target power change line graph; A power data change line graph generating unit is used to integrate all power receiving values ​​obtained in a specific power continuous rising stage to obtain a power data change line graph; The target power change line graph and the power data change line graph are both XY axis line graphs, and the X axis of the target power change line graph and the power data change line graph is the time when the target power equipment is in a specific power continuous rising stage, and the Y axis of the target power change line graph and the power data change line graph is the working power value and the power receiving value respectively.

10. The power grid fault intelligent analysis system according to claim 9, characterized in that: The power pre-supplement time point determination module specifically includes: A calibration time point determination unit, used to determine the calibration time point corresponding to the mutation turning point; A local graph interception unit, used to intercept the local graphs of the target power change line graph and the power data change line graph in a preset time period before and after the marked time point, and obtain a first comparison line graph and a second comparison line graph; The graphic comparison unit is used to analyze the similarity between the first comparison line graph and the second comparison line graph. If the similarity is greater than a preset threshold, it is determined that the fluctuations corresponding to the calibrated time points in the target power change line graph and the power data change line graph are consistent, and the calibrated time points are determined to be the power pre-replenishment time points.

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