CN112630597B - Fault determination method, device, equipment and storage medium - Google Patents
Fault determination method, device, equipment and storage medium Download PDFInfo
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- CN112630597B CN112630597B CN202011565557.1A CN202011565557A CN112630597B CN 112630597 B CN112630597 B CN 112630597B CN 202011565557 A CN202011565557 A CN 202011565557A CN 112630597 B CN112630597 B CN 112630597B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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Abstract
The invention discloses a fault determination method, a fault determination device, fault determination equipment and a storage medium. The method comprises the following steps: when a power failure triggering instruction is detected, determining the signal type of a current power failure signal; when the signal type is a preset signal type, screening according to the current lightning condition and a predetermined thunderstorm active area to obtain a candidate line lightning stroke point set; the candidate line lightning stroke point set is checked to obtain target line lightning stroke points; and determining the power failure fault direction according to the lightning stroke point of the target line. According to the embodiment of the invention, when the power failure is detected, the thunderstorm active area is screened by checking the current lightning condition near the line, the possible line lightning stroke point is determined, then the cloud flash part is removed, the rest ground flash point is subjected to key investigation, and the power failure fault direction corresponding to the target line lightning stroke point is determined, so that the power failure fault direction is simply and quickly determined, and the power transmission can be quickly replaced and recovered.
Description
Technical Field
The embodiment of the invention relates to a meteorological technology, in particular to a fault determination method, a fault determination device, fault determination equipment and a storage medium.
Background
With the continuous development of power supply technology, the range of power supply areas is also expanding. In actual power supply, part of branch lines in a power supply line are in mountain forest areas with higher pollution degree and are not transformed so far, the service life of an insulator is higher, and short-time ground faults caused by pollution flashover occur frequently during spring warming. The areas with larger annual electricity consumption and higher electricity consumption fluctuation are all at the tail end of the radius of line power supply, and the branch line is listed in the technical improvement plan although the operation and maintenance strength is enhanced, but the number of users still tends to rise when the average power failure occurs in recent years.
Aiming at the power failure condition, the current rush-repair mode still depends on the understanding degree of a zone manager in a fault region to the zone equipment to a large extent. After a power failure occurs, if the experience of a patch manager is not effective, the comprehensive isolation inspection needs to be paved when no fault point is found. Moreover, when a plurality of lightning grounding points are met, breakdown of the insulator is not obvious, and the unmanned aerial vehicle cannot play a role, grounding resistance shake measurement is often required to be carried out rod by rod, and whether grounding and grounding types are judged. Sometimes, in order to reduce the number of households in power failure, a certain section of line insulator in an isolation area has to be replaced completely, which is time-consuming, laborious and uneconomical, and is contrary to the current power grid operation and maintenance concept.
Disclosure of Invention
In view of the above, the present invention provides a failure determination method, apparatus, device, and storage medium that enable a power outage failure direction to be determined simply and quickly, so that power transmission can be replaced and resumed promptly.
In a first aspect, an embodiment of the present invention provides a fault determining method, including:
when a power failure triggering instruction is detected, determining the signal type of a current power failure signal;
when the signal type is a preset signal type, screening according to the current lightning condition and the predetermined thunderstorm active area to obtain a candidate line lightning stroke point set;
the candidate line lightning stroke point set is checked to obtain a target line lightning stroke point;
and determining the power failure fault direction according to the lightning stroke point of the target line.
In a second aspect, an embodiment of the present invention further provides a fault determining apparatus, including:
the first determining module is used for determining the signal type of the current power failure signal when the power failure triggering instruction is detected;
the screening module is used for screening and obtaining a candidate line lightning stroke point set according to the current lightning condition and the predetermined thunderstorm active area when the signal type is a preset signal type;
the investigation module is used for investigating the candidate line lightning strike point set to obtain a target line lightning strike point;
and the second determining module is used for determining the power failure fault direction according to the lightning stroke point of the target line.
In a third aspect, an embodiment of the present invention further provides a fault determining apparatus, including: a memory, and one or more processors;
the memory is used for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the fault determination method as described in any of the embodiments of the present invention.
In a fourth aspect, embodiments of the present invention further provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a fault determination method according to any of the embodiments of the present invention.
According to the embodiment of the invention, when the power failure triggering instruction is detected, the signal type of the current power failure signal is determined; when the signal type is a preset signal type, screening according to the current lightning condition and a predetermined thunderstorm active area to obtain a candidate line lightning stroke point set; the candidate line lightning stroke point set is checked to obtain target line lightning stroke points; and determining the power failure fault direction according to the lightning stroke point of the target line. According to the embodiment of the invention, when the power failure is detected, the thunderstorm active area is screened by checking the current lightning condition near the line, the possible line lightning stroke point is determined, then the cloud flash part is removed, the rest ground flash point is subjected to key investigation, and the power failure fault direction corresponding to the target line lightning stroke point is determined, so that the power failure fault direction is simply and quickly determined, and the power transmission can be quickly replaced and recovered.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a fault determination method provided by an embodiment of the present invention;
FIG. 2 is a flow chart of another fault determination method provided by an embodiment of the present invention;
FIG. 3 is a schematic view of a lightning arrester broken down by lightning provided by an embodiment of the invention;
fig. 4 is a schematic structural diagram of a fault determining apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fault determining apparatus according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In an embodiment, fig. 1 is a flowchart of a fault determining method according to an embodiment of the present invention, where the method may be implemented by a fault determining device according to an embodiment of the present invention, and the device may be implemented in software and/or hardware. Wherein the fault determining means may be integrated in the fault determining device. For example, the fault determining device may be a terminal device such as a personal computer, an iPad, a notebook computer, and the like. Wherein a doppler radar echo and a lightning location system are integrated in the fault determination device. It should be noted that the embodiment is applicable to a medium voltage line maintenance center with low self-healing and automation level for a power grid. As shown in fig. 1, the method specifically includes the following steps:
s110, when a power failure triggering instruction is detected, determining the signal type of a current power failure signal.
The power failure triggering instruction is used for representing instruction information of the power failure condition of a certain area. It is understood that when a power outage trigger command is detected, this means that a power outage occurs in a certain area. In the actual operation process, when a power failure occurs in a certain area, a dispatching department corresponding to the power distribution system receives a power failure signal, and the power distribution system analyzes the current power failure signal to determine the signal type of the current power failure signal. For example, the signal types of the power outage signal may include: overcurrent, ground, and leakage.
In an embodiment, the power outage triggering instruction occurs after the lightning passing through the jetty and lightning and the echo has covered a portion of the line. Before the power failure occurs in the jejunal line transit line, the lightning stroke point can be checked by the existing means, so that the correlation between the power failure and the fault can be determined; after a power outage occurs in a situation of passing through a lightning and an echo is covered on most lines, the determination difficulty of a lightning stroke point is improved because a power outage area is covered on most lines, and in order to determine the power outage direction in the scene conveniently, the signal type of the current power outage signal is determined.
And S120, screening to obtain a candidate line lightning stroke point set according to the current lightning condition and a predetermined thunderstorm active area when the signal type is a preset signal type.
In one embodiment, the predetermined signal type includes one of: an overcurrent class; and (3) grounding. In an embodiment, in the case that the signal type of the current power outage signal is an overcurrent type or a grounding type, the fault cause causing the power outage may be lightning. In the actual operation process, a lightning density diagram in a radar echo and lightning early warning system and a line distribution situation of a power distribution system can be combined, and the lightning situation near the line is checked, namely the current lightning situation is determined; the predetermined thunderstorm activity area is then screened based on the current lightning conditions to determine a set of possible candidate line lightning strike points. It will be appreciated that the lightning point corresponding to the current lightning situation may be contained in a predetermined thunderstorm active area.
In one embodiment, S120 includes S1201-S1202:
s1201, screening an initial line lightning strike point set from a thunderstorm active area according to the current lightning condition.
In an embodiment, the initial set of line lightning points refers to lightning points obtained by screening the thunderstorm active area according to the current flash point situation. The thunderstorm active area is an area which is predicted to possibly generate the thunderstorm according to a pre-established thunder and lightning early warning system. It is understood that a thunderstorm activity area is an area where a thunderstorm is likely to occur, which is theoretically obtained; while the current lightning situation refers to the area where lightning actually occurs. Of course, in practice, the area corresponding to the current lightning situation may not be within the thunderstorm active area, but may be located in the vicinity of the thunderstorm active area.
S1202, eliminating cloud lightning strike points in the initial line lightning strike point set to obtain a candidate line lightning strike point set.
In an embodiment, the initial set of line lightning points includes cloud flash points in addition to ground flash points. In order to facilitate the determination of the power failure fault direction, cloud flash lightning points in the initial line lightning point set are removed to obtain all the ground flash points, namely the candidate line lightning point set comprises all the ground flash points.
S130, checking the candidate line lightning stroke point set to obtain the target line lightning stroke point.
In the embodiment, the situation that the line equipment is struck by lightning can happen due to the ground flash points in the candidate line strike point set, and at the moment, the ground flash points in the candidate line strike point set are subjected to key investigation to determine the position where the power failure occurs. It is understood that the target line lightning strike point refers to the location where the power outage fault occurs.
S140, determining the power failure fault direction according to the lightning stroke point of the target line.
The lightning strike point of the target line is the direction of power failure. In an embodiment, the direction in which the target line lightning strike point is located is determined as the direction in which the power outage fault occurs.
According to the technical scheme, when the power failure is detected, the thunderstorm active area is screened by checking the current lightning condition near the line, the possible line lightning stroke point is determined, then the cloud flash part is removed, the rest ground flash point is subjected to key investigation, the power failure fault direction corresponding to the target line lightning stroke point is determined, the power failure fault direction is simply and rapidly determined, and accordingly power transmission can be quickly replaced and recovered.
In one embodiment, fig. 2 is a flowchart of another fault determination method according to an embodiment of the present invention. The embodiment is applied to early warning of lightning and determining the fault direction when power failure occurs. As shown in fig. 2, the present embodiment includes the steps of:
s210, acquiring current attribute information of the convection cloud cluster in the target aerial image.
In one embodiment, the current attribute information of the stream cloud includes one of: mobility tendency, polarity of strong charge, intensity of strong charge, and distribution of strong charge. Wherein, the movement trend refers to the movement trend of the convection cloud. In the embodiment, when the thundercloud is used for temporary, the intensity of the atmospheric electric field can be changed, and the occurrence time, the azimuth, the intensity, the moving direction and the like of the lightning disaster can be early warned in advance by monitoring the polarity, the intensity, the distribution and the development and the evolution of strong charges in the thundercloud.
S220, determining a thunderstorm active area according to the current attribute information of the convection cloud cluster.
In the embodiment, the identification, tracking and movement trend estimation are carried out on the convection cloud cluster in the sequence meteorological cloud image, so that the thunderstorm activity development prediction with a large scale level is realized. By analyzing the distribution characteristics of the lightning activity time and space, the lightning is scattered and random in the actual process, but the time and space distribution is still regular and circulated in a large area. The thunderstorm groups in different time periods can be analyzed, the movement track of the thunderstorm groups is obtained, the movement track of the thunderstorm groups is predicted, and mesoscale lightning activity trend prediction is realized, so that the thunderstorm activity area is determined.
S230, when the power failure triggering instruction is detected, determining the signal type of the current power failure signal.
And S240, screening to obtain a candidate line lightning stroke point set according to the current lightning condition and a predetermined thunderstorm active area when the signal type is a preset signal type.
S250, checking the candidate line lightning stroke point set to obtain the target line lightning stroke point.
S260, determining the power failure fault direction according to the lightning stroke point of the target line.
S270, isolating the position of the lightning strike point of the target line.
In an embodiment, in order to facilitate rapid determination of the location of the power outage fault, after the lightning strike point of the target line is determined, the direction in which the lightning strike point of the target line is located is rapidly isolated and focused on investigation.
It should be noted that, the execution sequence of S260 and S270 is not limited, that is, the power failure fault direction may be determined first, and then the location where the lightning strike point of the target line is located is isolated; the position of the lightning stroke point of the target line can be isolated firstly, and then the power failure fault direction is determined; the power failure fault direction can be determined at the same time, and the position of the lightning stroke point of the target line is isolated.
According to the technical scheme, an atmospheric electric field instrument is utilized to detect an atmospheric electric field, and a multistage alarm value is set by combining the installation position of the electric field instrument, local terrain conditions and other factors, so that accurate short-time early warning of small-scale lightning can be realized; and when the power failure occurs, the cloud flash points are removed, the direction in which the ground flash points are located is rapidly isolated and focused to be checked, so that the power failure direction is simply and rapidly determined, and the power transmission can be rapidly replaced and recovered.
In one embodiment, the process of lightning early warning and fault determination is described using the example of eastern Guangdong. The Minguangqiong province is a region with most concentrated domestic lightning because the ocean warm and humid and large Liu Lenggao compression holding period is relatively long every year. By way of example, the lightning early warning process will be described using the power supply station a. The power supply station A is located in the southern area of Guangdong and is in subtropical monsoon climate. According to the weather background of lightning, lightning in the eastern Guangdong region mainly exists in three types: the first is the strongly convective weather that occurs when cold air that permeates from north to south meets the southwest warm wet from west to east, characterized by the presence of a significant line that crosses from west to east. The weather background is before the gradual strong cold air or the burst of ocean wind, so the lightning is more frequently generated in spring and summer intersections and autumn and winter intersections; the second type is local vertical convection burst after the afternoon in summer, the weather background is generally that the subtropical high pressure thoroughly controls the south China area, and is generally under the control of the equal pressure line of the lower layer 588hpa in the troposphere, so that sinking airflow is strong; the third category is that when the western Pacific ocean approaches the southern sea typhoon, the external circulation of typhoon occurs. In the weather background of high lightning, the first class and the third class have remarkable and stable movement of the lightning line passing types, namely the first class and the third class are taken as examples to describe lightning early warning. The high-voltage fault in the east mountain can be characterized in that the high-voltage fault basically occurs in 4-9 months all the year round, namely, the high-weather is more in spring and summer and is obviously positively correlated with the local high-weather high-occurrence time period.
In the prior art, various Doppler radar early warning systems have appeared, and in the embodiment, lightning early warning and positioning are described by the fact that a weather monitoring-lightning positioning system of a Shenzhen weather platform is fake. Doppler radar echoes are obtained by carrying out Doppler speed resolution on weather echoes, so that the distribution conditions of various air turbulence motions in atmosphere layers with different heights can be obtained, and relevant weather information is obtained and converted by utilizing a visualization technology. In popular terms, rainfall in the atmosphere can be detected through the intensity of signals reflected by rain drops, so that the rainfall serves as a reference of convection intensity. The intensity of the signal depends on various factors, in general, the larger and more raindrops in the air, the stronger the reflected signal, and the more lightning is more than 30dB in intensity, but the lightning is generated without being strong in convection, so that the lightning is generated with more complex weather condition constraint, and the lightning early warning level is judged according to the lightning density.
And acquiring high-resolution imager data by using a meteorological satellite cloud image receiving and processing system, and outputting image products related to the object of interest in real time by combining the high-resolution imager data with the geographic coordinates of the power transmission line of the power grid. And carrying out serialization processing on the large-scale satellite cloud image data according to time, establishing a rapid real-time thunderstorm prediction model, and carrying out identification, tracking and movement trend estimation on the convection cloud cluster in the sequence meteorological cloud image so as to realize the development prediction of the thunderstorm activity of a large-scale level. By analyzing the temporal and spatial distribution characteristics of lightning activity, the temporal and spatial distribution is still regularly circulated over a large area, although the lightning occurrence is discrete and random. The motion trail of the thunderstorm group is obtained by analyzing the thunderstorm group in different time periods, and the motion trail of the thunderstorm group is predicted, so that mesoscale lightning activity trend prediction is realized. When the thundercloud is temporary, the intensity of the atmospheric electric field can change, and the occurrence time, the azimuth, the intensity, the moving direction and the like of the lightning disaster can be early warned in advance by monitoring the polarity, the intensity, the distribution and the development and the evolution of strong charges in the thundercloud. The atmospheric electric field instrument is utilized to detect the atmospheric electric field, and the multistage alarm value is set by combining the installation position of the electric field instrument, the local terrain condition and other factors, so that accurate short-time early warning of small-scale lightning can be realized.
Because the lightning generation mode in the local area is concentrated on the first and third weather backgrounds in the Guangdong area described in the embodiment, namely, the weather backgrounds come along with the lines and are restrained around the advancing direction of the convection echo, the reference radar echo and the lightning positioning can be used as technical references for a first-line rush-repair staff to quickly determine the power failure fault direction (the dispatch center feeds back to be of the overcurrent and grounding fault type), so that the radar echo early warning instantaneity is high and the interval is short.
In the actual operation process, the fault point positioning method comprises the following steps: when the radar echo early warning system determines that the violent weather is close (the moving direction of the line echo can be observed within 10-20 km), the lightning early warning system of the weather desk is concerned immediately and the power distribution system is started, and when power failure occurs, if the power failure signals fed back by the dispatching department are overcurrent and grounding, the power failure signals can be caused by lightning. At this time, the lightning density diagram in the lightning early warning system and the line distribution condition of the power distribution system should be combined, the lightning condition near the line is checked to screen and determine possible line lightning strike points (i.e. the initial line strike point set in the above embodiment), the cloud flash part is removed, the rest of the ground flash points (i.e. the candidate line strike point set in the above embodiment) can generate the condition that the line equipment is struck by lightning, and the direction should be rapidly isolated and focused. If the power failure occurs before the line passes through the border line, the positioning success rate of the faults is highest, the correlation between the power failure and the faults is easier to determine, once the line and the lightning pass through the border and the echo cover most of the lines, the difficulty in determining the lightning stroke fault point is improved, and the lightning stroke fault point cannot be accurately determined through a thunderstorm prediction model.
The fault determination method in this embodiment will be described by taking a power failure occurring in the power supply station a of 57 minutes at 2018, 8, 2, and 10 as an example. Wherein, 57 minutes of 10 days of 2018 and 08 are respectively, the power supply station A has power failure, and the reason is unknown. The radar echo and lightning early warning system is used for rapidly isolating the line which is crossed by the squall line, has lightning strike and has faults, the lightning strike point is accurately isolated only 16 minutes, namely 14 minutes at 08 month 02 day 11, and the line in the non-fault area is recovered to transmit power (or transfer power). And then, screening out three ground flash points according to the distribution condition of the distribution system line, checking the ground flash points, and finally finding out a lightning arrester broken down by lightning on a transformer rack of one of the three ground flash points, and quickly replacing and recovering the duplicate electricity. Fig. 3 is a schematic view of a lightning arrester broken down by lightning according to an embodiment of the invention. As shown in fig. 3, the position of the circled breakdown hole is the position of the lightning arrester that is broken down by lightning. The ground flash points in all lightning points are removed to obtain a candidate line lightning point set, and then all line lightning points in the candidate line lightning point set are subjected to key investigation to obtain target line lightning points so as to rapidly determine the power failure fault direction.
The conditions of thunderstorm cloud clusters, lightning activity trends, in-cloud discharge activities and the like are reflected from different angles, the gradual early warning from thick to thin is realized, and the three are organically combined by the comprehensive early warning method for the lightning of the power grid, so that the highest accuracy and the optimal near early warning effect on the lightning activity are realized. In the actual operation process, in order to realize thunderstorm early warning, the following functions are added in a meteorological monitoring-lightning positioning system: 1) Visualization of strong thunderstorm activity near the transmission line: the future 30min, the line passing mode and the thunder and lightning activity forecast can be checked, and the echo passing process can be traced back; 2) Real-time line early warning profile: and displaying the current lightning early warning condition of the line focused by the user, and representing the current lightning early warning condition with different colors according to the lightning early warning level. Counting the total early warning of the real-time line according to 10min, wherein a user can see the lightning early warning information statistics of every 10min in 24h each day (namely, the number of lines involved in different color early warning is displayed); 3) Real-time line overall early warning is counted according to days: the user can see lightning early warning information statistics of 1 month before the current time every day; 4) Historical moment line overall lightning early warning profile: a user can inquire the overall lightning early warning profile of the line in any historical time through a time control; 5) Historical line overall early warning is counted according to 10 minutes: the user can see lightning early warning information statistics of every 10 minutes in the current day at the historical moment; 6) Historical line overall early warning is counted according to days: the user can see lightning early warning information statistics of 1 month before the historical time every day; 7) Map display of line lightning early warning: the line distribution and the corresponding lightning early warning distribution diagram are displayed on the map in a total way, and a user can intuitively see which places have stronger lightning activities; 8) And (5) counting in lightning early warning areas: the line lightning early warning is classified according to the administrative region where the line lightning early warning is located, and a user can directly see whether a specific administrative region has strong thunderstorm activity or not and whether a concerned line is involved or not; 9) Single line early warning details: the user can view the lightning early warning section of the line on the map, and meanwhile, the user interface can view the detailed description of the dangerous section, including the line section number, the lightning early warning details, the weather forecast conditions and the like. Single line early warning statistics: the lightning early warning statistical condition of every 10min in 1 day of the line can be checked; 10 Line early warning section positioning: the user can click the early warning section (marked by different colors) by a mouse, and the map is directly amplified and positioned to the dangerous section area. Line lightning strike inquiry: the user can search the lightning activity of the line at the time of lightning stroke early warning, the search condition is preset, the time is the current early warning release time, and the users with the buffer radius of 1, 2 and 5km can click and select. Line lightning early warning history playback: when a user checks the lightning early warning of a single line, the lightning activity and the corresponding lightning early warning condition in 30 minutes before the line can be checked by switching the user tab form so as to verify the lightning early warning effect.
According to the technical scheme, functions of rolling visual Doppler radar echo prediction, real-time lightning landing point data query, power transmission line fault risk grading early warning, line lightning landing point reference, short message pushing and the like are provided through a weather monitoring-lightning positioning system. Meanwhile, the system can send out an alarm to a power transmission channel and a high-risk section of a line area, which are subjected to lightning strike in a period of time, and the power failure loss and personnel injury caused by the lightning are reduced to the minimum through the linkage active dynamic protection measures such as scheduling, operation, maintenance and overhaul, emergency and the like, so that the active defending level of the lightning damage of the power grid is improved.
In an embodiment, fig. 4 is a schematic structural diagram of a fault determining apparatus according to an embodiment of the present invention. As shown in fig. 4, the failure determination device specifically includes: a first determination module 310, a screening module 320, an investigation module 330, and a second determination module 340.
The first determining module is used for determining the signal type of the current power failure signal when the power failure triggering instruction is detected;
the screening module is used for screening and obtaining a candidate line lightning stroke point set according to the current lightning condition and a predetermined thunderstorm active area when the signal type is a preset signal type;
the investigation module is used for investigating the candidate line lightning stroke point set to obtain a target line lightning stroke point;
and the second determining module is used for determining the power failure fault direction according to the lightning stroke point of the target line.
According to the technical scheme, when the power failure is detected, the thunderstorm active area is screened by checking the current lightning condition near the line, the possible line lightning stroke point is determined, then the cloud flash part is removed, the rest ground flash point is subjected to key investigation, the power failure fault direction corresponding to the target line lightning stroke point is determined, the power failure fault direction is simply and rapidly determined, and accordingly power transmission can be quickly replaced and recovered.
On the basis of the above embodiment, the failure determination apparatus further includes:
the acquisition module is used for acquiring current attribute information of the convection cloud cluster in the target weather map before determining the signal type of the current power failure signal when the power failure triggering instruction is detected;
and the third determining module is used for determining a thunderstorm active area according to the current attribute information of the flow cloud cluster.
On the basis of the above embodiment, the failure determination apparatus further includes:
and the isolation module is used for isolating the position of the lightning stroke point of the target line after the candidate line lightning stroke point set is subjected to investigation to obtain the lightning stroke point of the target line.
On the basis of the above embodiment, the screening module includes:
the screening unit is used for screening and obtaining an initial line lightning stroke point set from the thunderstorm active area according to the current lightning condition;
the removing unit is used for removing cloud lightning strike points in the initial line lightning strike point set to obtain a candidate line lightning strike point set.
On the basis of the above embodiments, the power outage triggering command occurs after the lightning passing of the jetty and lightning and the echo has covered part of the line.
On the basis of the above embodiment, the preset signal type includes one of the following: an overcurrent class; and (3) grounding.
On the basis of the above embodiment, the current attribute information of the flow cloud includes one of the following: mobility tendency, polarity of strong charge, intensity of strong charge, and distribution of strong charge.
The fault determining device provided by the embodiment can execute the fault determining method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the fault determining method.
In an embodiment, fig. 5 is a schematic structural diagram of a fault determining apparatus according to an embodiment of the present invention. As shown in fig. 5, the apparatus includes a processor 410, a memory 420, an input device 430, and an output device 440; the number of processors 410 in the device may be one or more, one processor 410 being taken as an example in fig. 5; the processor 410, memory 420, input means 430 and output means 440 in the device may be connected by a bus or other means, for example by a bus connection in fig. 5. The fault determining device can be a terminal device such as a personal computer, an iPad, a notebook computer, a smart phone and the like.
The memory 420 is used as a computer readable storage medium for storing software programs, computer executable programs, and modules, such as program modules corresponding to the fault determination method in the embodiment of the present invention (for example, the first determination module 810, the screening module 820, the troubleshooting module, and the second determination module 830 in the fault determination device). The processor 410 executes various functional applications of the device and data processing, i.e., implements the fault determination methods described above, by running software programs, instructions, and modules stored in the memory 420.
Memory 420 may include primarily a program storage area and a data storage area, wherein the program storage area may store an operating system, at least one application program required for functionality; the storage data area may store data created according to the use of the terminal, etc. In addition, memory 420 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 420 may further include memory located remotely from processor 410, which may be connected to the device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input means 430 may be used to receive entered numeric or character information and to generate key signal inputs related to user settings and function control of the device. The output 440 may include a display device such as a display screen.
Embodiments of the present invention also provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a fault determination method comprising: when a power failure triggering instruction is detected, determining the signal type of a current power failure signal; when the signal type is a preset signal type, screening according to the current lightning condition and a predetermined thunderstorm active area to obtain a candidate line lightning stroke point set; the candidate line lightning stroke point set is checked to obtain target line lightning stroke points; and determining the power failure fault direction according to the lightning stroke point of the target line.
Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present invention is not limited to the above method operations, and may also perform the related operations in the fault determination method provided in any embodiment of the present invention.
From the above description of embodiments, it will be clear to a person skilled in the art that the present invention may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, although in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, etc., including several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to execute the method of the embodiments of the present invention.
It should be noted that, in the embodiment of the generating device of the model tree structure, each unit and module included are only divided according to the functional logic, but are not limited to the above-mentioned division, so long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (8)
1. A fault determination method, comprising:
when a power failure triggering instruction is detected, determining the signal type of a current power failure signal;
when the signal type is a preset signal type, screening according to the current lightning condition and a predetermined thunderstorm active area to obtain a candidate line lightning stroke point set;
the candidate line lightning stroke point set is checked to obtain a target line lightning stroke point;
determining a power failure fault direction according to the lightning stroke point of the target line;
the screening to obtain a candidate line lightning strike point set according to the current lightning condition and the predetermined thunderstorm active area comprises the following steps:
screening and obtaining an initial line lightning stroke point set from the thunderstorm active area according to the current lightning condition;
removing cloud lightning strike points in the initial line lightning strike point set to obtain a candidate line lightning strike point set;
when the power failure triggering instruction is detected, before determining the signal type of the current power failure signal, the method further comprises the following steps:
acquiring current attribute information of a convection cloud cluster in a target aerial image;
determining a thunderstorm active area according to the current attribute information of the convection cloud;
determining a thunderstorm activity area according to the current attribute information of the convection cloud, wherein the method comprises the following steps:
identifying, tracking and moving the trend of the convection cloud cluster in the sequence meteorological cloud image, and predicting the development of the thunderstorm activity in a large scale level;
and analyzing the thunderstorm groups in different time periods, obtaining a thunderstorm group movement track, and predicting the thunderstorm group movement track to perform mesoscale lightning activity trend prediction so as to determine the thunderstorm activity area.
2. The method of claim 1, further comprising, after said examining the set of candidate line lightning strikes, obtaining a target line lightning strike:
and isolating the position of the lightning stroke point of the target line.
3. The method of claim 1, wherein the power outage trigger command occurs after the line and lightning pass and the echo has covered a portion of the line.
4. The method of claim 1, wherein the predetermined signal type comprises one of: an overcurrent class; and (3) grounding.
5. The method of claim 1, wherein the current attribute information of the convective cloud comprises one of: mobility tendency, polarity of strong charge, intensity of strong charge, and distribution of strong charge.
6. A fault determination apparatus, comprising:
the first determining module is used for determining the signal type of the current power failure signal when the power failure triggering instruction is detected;
the screening module is used for screening and obtaining a candidate line lightning stroke point set according to the current lightning condition and a predetermined thunderstorm active area when the signal type is a preset signal type;
the investigation module is used for investigating the candidate line lightning strike point set to obtain a target line lightning strike point;
the second determining module is used for determining a power failure fault direction according to the lightning stroke point of the target line;
wherein, screening module includes:
the screening unit is used for screening and obtaining an initial line lightning strike point set from the thunderstorm active area according to the current lightning condition;
the rejecting unit is used for rejecting cloud lightning strike points in the initial line lightning strike point set to obtain the candidate line lightning strike point set;
the fault determining apparatus further includes:
the acquisition module is used for acquiring current attribute information of the convection cloud cluster in the target weather map before determining the signal type of the current power failure signal when the power failure triggering instruction is detected;
a third determining module, configured to determine the thunderstorm active area according to current attribute information of the convection cloud cluster;
the third determining module is specifically configured to identify, track and move the trend according to the convective cloud cluster in the sequence meteorological cloud image, and predict the development of the thunderstorm activity in a large scale level; and analyzing the thunderstorm groups in different time periods, obtaining a thunderstorm group movement track, and predicting the thunderstorm group movement track to perform mesoscale lightning activity trend prediction so as to determine the thunderstorm activity area.
7. A failure determination apparatus, characterized by comprising: a memory, and one or more processors;
the memory is used for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the fault determination method of any of claims 1-5.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the fault determination method as claimed in any one of claims 1-5.
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| CN104200281B (en) * | 2014-08-25 | 2017-09-22 | 清华大学 | The Forecasting Methodology and system of thunder cloud mobile route based on lightning location system |
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| CN104698341A (en) * | 2015-03-10 | 2015-06-10 | 广东电网有限责任公司佛山供电局 | Method and system for positioning lightning strike fault point of distribution line |
| CN108537368A (en) * | 2018-03-20 | 2018-09-14 | 国家气象中心 | A kind of lightning method for early warning, apparatus and system |
| CN109738970B (en) * | 2018-12-07 | 2021-02-02 | 国网江苏省电力有限公司电力科学研究院 | Method, device and storage medium for realizing lightning early warning based on lightning data mining |
| CN110221180B (en) * | 2019-07-01 | 2021-07-06 | 国网四川省电力公司电力科学研究院 | 10kV distribution line lightning stroke fault recognition and positioning method |
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