CN113051423B - Intelligent online monitoring method for state of power transmission line of intelligent power grid based on big data analysis - Google Patents
Intelligent online monitoring method for state of power transmission line of intelligent power grid based on big data analysis Download PDFInfo
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Abstract
The invention discloses an intelligent online monitoring method for the state of a power transmission line of an intelligent power grid based on big data analysis, which comprises the steps of dividing the power transmission line in a power distribution network into sections of power transmission sub-lines, acquiring insulation skin surface images of the sections of the power transmission sub-lines in the power distribution network, acquiring insulation skin damaged areas in the insulation skin surface images of the sections of the power transmission sub-lines in the power distribution network, calculating the actual damaged areas of the insulation skin surfaces of the sections of the power transmission sub-lines in the power distribution network, acquiring the number of broken wires in the sections of the power transmission sub-lines in the power distribution network, measuring the line height at the central point position of the sections of the power transmission sub-lines in the power distribution network, comparing and analyzing the line height difference value at the central point position of the sections of the power transmission sub-lines in the power distribution network, calculating the comprehensive safety influence coefficient of the sections of the power transmission sub-lines in the power distribution network, analyzing whether the sections of the power transmission sub-lines are in dangerous stages or not, and maintaining or replacing the sections of the power transmission sub-lines in the dangerous stages, thereby the safe power supply of guarantee distribution network.
Description
Technical Field
The invention relates to the technical field of line safety monitoring, in particular to an intelligent online monitoring method for the state of a power transmission line of an intelligent power grid based on big data analysis.
Background
With the development of the smart grid technology and the continuous progress of the automatic construction of the power system, how to effectively monitor and safely prevent the abnormal state of the power transmission line in the power distribution network becomes a new demand point and a hot topic of research on the power transmission line state monitoring technology in the smart grid.
At present, the existing power transmission line state monitoring technology in the power distribution network mostly adopts manual monitoring, namely, the state of the power transmission line in the power distribution network is manually monitored in a timing mode, the potential safety hazard of the power transmission line in the power distribution network is searched, so that a large amount of manpower resources are wasted, but also has the problems of inconsistent knowledge reserves, experience abilities and reference standards of personnel, which causes the accuracy of monitoring data to be reduced, thereby reducing the power supply reliability of the power distribution network, simultaneously, the broken strand state of the electric wire in the power transmission line in the power distribution network can not be monitored through manual visual inspection, the hysteresis of monitoring information exists, thereby leading to the failure of effective and targeted treatment on the power transmission line in time and affecting the safe power supply guarantee of the power distribution network, and further, the power consumption requirements of people cannot be met, and in order to solve the problems, an intelligent power grid power transmission line state online intelligent monitoring method based on big data analysis is designed.
Disclosure of Invention
The invention aims to provide an intelligent online monitoring method for the state of a power transmission line of an intelligent power grid based on big data analysis, which divides the power transmission line in a power distribution network into sections of power transmission sub-lines, collects insulation skin surface images of the sections of the power transmission sub-lines in the power distribution network, performs image normalization processing, simultaneously obtains the insulation skin damaged area in the insulation skin surface images of the sections of the power transmission sub-lines in the power distribution network, calculates the actual damaged area of the insulation skin surface of the sections of the power transmission sub-lines in the power distribution network, scans the sections of the power transmission sub-lines in the power distribution network, obtains the broken wire number in the sections of the power transmission sub-lines in the power distribution network, simultaneously measures the line height at the central point position of the sections of the power transmission sub-lines in the power distribution network, contrasts and analyzes the line height difference value at the central point position of the sections of the power transmission sub-lines in the power distribution network, calculates the comprehensive safety influence coefficient of the sections of the power transmission sub-lines in the power distribution network, whether each section of the power transmission sub-circuit is in a dangerous stage or not is analyzed, and each section of the power transmission sub-circuit in the dangerous stage is maintained or replaced, so that the problems in the background technology are solved.
The purpose of the invention can be realized by the following technical scheme:
an intelligent power grid transmission line state online intelligent monitoring method based on big data analysis comprises the following steps:
s1, dividing the power transmission line in the power distribution network into sections of power transmission sub-lines, and numbering the sections in sequence according to a set sequence;
s2, simultaneously acquiring insulation skin surface images of each section of power transmission sub-circuit in the power distribution network, and performing image normalization processing;
s3, obtaining damaged areas of the insulating skins in the insulating skin surface images of all sections of power transmission sub-circuits in the power distribution network, and calculating the actual damaged areas of the insulating skin surfaces of all sections of power transmission sub-circuits in the power distribution network;
s4, scanning each section of power transmission sub-circuit in the power distribution network simultaneously to obtain the number of broken strands of wires in each section of power transmission sub-circuit in the power distribution network;
s5, measuring the line height at the central point position of each section of the power transmission sub-line in the power distribution network, and comparing and analyzing the line height difference at the central point position of each section of the power transmission sub-line in the power distribution network;
s6, calculating the comprehensive safety influence coefficient of each section of power transmission sub-circuit in the power distribution network, analyzing whether each section of power transmission sub-circuit is in a dangerous stage, and maintaining or replacing each section of power transmission sub-circuit in the dangerous stage;
the intelligent power grid power transmission line state online intelligent monitoring method based on big data analysis uses an intelligent power grid power transmission line state online intelligent monitoring system based on big data analysis, and comprises a line dividing module, a line image acquisition module, a line image processing module, a damaged area acquisition module, a damaged area analysis module, a broken strand number statistics module, a line height measurement module, a line height analysis module, an analysis server, a cloud monitoring platform and a storage database;
the system comprises a line image acquisition module, a line image dividing module, a line image processing module, a damaged area acquisition module, a line height measurement module, an analysis server and a storage database, wherein the line image acquisition module is respectively connected with the line dividing module and the line image processing module;
the line dividing module is used for dividing the power transmission line in the power distribution network, dividing the power transmission line in the power distribution network into a plurality of sections of power transmission sub-lines according to the positions of electric poles erected on the power transmission line, numbering the sections of power transmission sub-lines in the power distribution network in sequence according to a set sequence, wherein the numbers of the sections of power transmission sub-lines in the power distribution network are respectively 1,2, a.
The line image acquisition module is used for receiving the serial numbers of all sections of transmission sub-lines in the power distribution network sent by the line division module, acquiring images of the insulating skin surfaces of all sections of transmission sub-lines in the power distribution network, counting the insulating skin surface images of all sections of transmission sub-lines in the power distribution network, and forming an insulating skin surface image set P (P) of all sections of transmission sub-lines in the power distribution network1,p2,...,pi,...,pn)，piThe insulation skin surface images are expressed as insulation skin surface images of the ith section of power transmission sub-line in the power distribution network, and the insulation skin surface images of all sections of power transmission sub-lines in the power distribution network are sent to the line image processing module in a set mode;
the line image processing module is used for receiving the insulation skin surface image set of each section of power transmission sub-line in the power distribution network sent by the line image acquisition module, carrying out image processing on the received insulation skin surface image of each section of power transmission sub-line in the power distribution network, counting the processed insulation skin surface image of each section of power transmission sub-line in the power distribution network, and sending the processed insulation skin surface image of each section of power transmission sub-line in the power distribution network to the damaged area acquisition module;
the damaged area acquisition module is used for receiving the processed insulation skin surface images of all sections of transmission sub-lines in the power distribution network sent by the line image processing module, extracting the standard insulation skin surface images of the transmission lines in the power distribution network stored in the storage database, matching the received insulation skin surface images of all sections of transmission sub-lines in the power distribution network with the standard insulation skin surface images, acquiring the damaged area of the insulation skin in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network, counting the damaged area of the insulation skin in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network, and forming an insulation skin damaged area set S (S) in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network (S)1,s2,...,si,...,sn)，siRepresenting the damaged area of the insulation skin in the insulation skin surface image of the ith section of power transmission sub-line in the power distribution network, and transmitting power in each section of the power distribution networkThe damaged area set of the insulating skin in the insulating skin surface image of the sub-line is sent to a damaged area analysis module;
the damaged area analysis module is used for receiving a set of damaged areas of the insulating skin in the insulating skin surface image of each section of power transmission sub-line in the power distribution network sent by the damaged area acquisition module, extracting a proportional coefficient of image data and actual data in a standard form stored in a storage database, calculating the actual damaged area of the insulating skin surface of each section of power transmission sub-line in the power distribution network, counting the actual damaged area of the insulating skin surface of each section of power transmission sub-line in the power distribution network, and sending the actual damaged area of the insulating skin surface of each section of power transmission sub-line in the power distribution network to the analysis server;
the number statistics module for broken strands comprises an X-ray detector which is used for counting the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, scanning each section of transmission sub-line in the power distribution network through the X-ray detector to obtain the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, counting the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, and forming a set X (X) of the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network1,x2,...,xi,...,xn)，xiThe number of broken strands of the electric wires in the ith section of the transmission sub-line in the power distribution network is represented, and the number of broken strands of the electric wires in each section of the transmission sub-line in the power distribution network is collectively sent to an analysis server;
the line height measuring module is used for measuring the line height at the central point position of each section of power transmission sub-line in the power distribution network, counting the line height at the central point position of each section of power transmission sub-line in the power distribution network, and forming a line height set H (H) at the central point position of each section of power transmission sub-line in the power distribution network1,h2,...,hi,...,hn)，hiThe line height is expressed as the line height at the central point position of the ith section of power transmission sub-line in the power distribution network, and the line height set at the central point position of each section of power transmission sub-line in the power distribution network is sent to a line height analysis module;
the line height analysis module is usedReceiving the line height set at the central point position of each section of the power transmission sub-line in the power distribution network sent by the line height measuring module, extracting the standard line height of the power transmission line in the power distribution network stored in the storage database, and comparing the received line height at the central point position of each section of the power transmission sub-line in the power distribution network with the standard line height to obtain a line height difference set delta H (delta H) at the central point position of each section of the power transmission sub-line in the power distribution network1,Δh2,...,Δhi,...,Δhn)，ΔhiThe difference value is expressed as a comparison difference value between the height of the line at the central point position of the ith section of the power transmission sub-line in the power distribution network and the height of the standard line, and the line height difference value set at the central point position of each section of the power transmission sub-line in the power distribution network is sent to an analysis server;
the analysis server is used for receiving the actual damaged area of the insulating skin surface of each section of transmission sub-line in the power distribution network sent by the damaged area analysis module, receiving the collection of the number of broken strands of the electric wires in each section of transmission sub-line in the power distribution network sent by the broken strand number statistics module, receiving the collection of the line height difference value at the position of the central point of each section of transmission sub-line in the power distribution network sent by the line height analysis module, respectively extracting and storing the maximum wind speed and wind direction angle of the area where the power distribution network is located in recent years, the safety influence proportion coefficient of the damaged area of the insulating skin surface in the power transmission line and the number of broken strands of the electric wires, and the influence coefficient of the line height and the wind power size on the safety of the power transmission line, calculating the comprehensive safety influence coefficient of each section of transmission sub-line in the power distribution network, and counting the comprehensive safety influence coefficient of each section of transmission sub-line in the power distribution network, meanwhile, extracting standard safety influence coefficients of power transmission lines in the power distribution network stored in the storage database, comparing the comprehensive safety influence coefficients of all sections of power transmission sub-lines in the power distribution network with the standard safety influence coefficients, if the comprehensive safety influence coefficients of a certain section of power transmission sub-lines in the power distribution network are smaller than the standard safety influence coefficients, indicating that the section of power transmission sub-lines is in a safety stage, if the comprehensive safety influence coefficients of a certain section of power transmission sub-lines in the power distribution network are larger than or equal to the standard safety influence coefficients, indicating that the section of power transmission sub-lines is in a dangerous stage, counting the numbers of all power transmission sub-lines in the dangerous stage in the power distribution network, and sending the numbers of all power transmission sub-lines in the dangerous stage in the power distribution network to a cloud monitoring platform;
the cloud monitoring platform is used for receiving the number of each power transmission sub-line in the dangerous stage in the power distribution network sent by the analysis server and informing relevant personnel to maintain or replace each power transmission sub-line in the dangerous stage;
the storage database is used for storing a standard insulation skin surface image of the power transmission line in the power distribution network, and simultaneously storing a proportionality coefficient k of image data in a standard form and actual data and a standard line height h of the power transmission line in the power distribution networkSign boardStoring the maximum wind speed v occurring in the region of the distribution network in recent yearsmaxAnd a wind direction angle theta, and safety influence proportional coefficients of the surface damage area of the insulating sheath and the number of broken strands of the electric wire in the power transmission line are stored and recorded as lambda respectivelys,λxAnd simultaneously storing the influence coefficients of the height of the line and the wind power on the safety of the power transmission line, respectively recording as mu and eta, and storing the standard safety influence coefficients of the power transmission line in the power distribution network.
Furthermore, the line image acquisition module comprises a high-definition camera, wherein the high-definition camera is installed on the unmanned aerial vehicle, the unmanned aerial vehicle is controlled to carry out all-dimensional shooting on the insulating leather surface of each section of the power transmission sub-line in the power distribution network, each azimuth insulating leather surface sub-image of each section of the power transmission sub-line in the power distribution network is acquired, each azimuth insulating leather surface sub-image of each section of the power transmission sub-line in the power distribution network is integrated, and the insulating leather surface image of each section of the power transmission sub-line in the power distribution network is acquired.
Further, the image processing in the line image processing module is normalization processing, and is used for normalizing the insulation skin surface images of each section of power transmission sub-line in the power distribution network, converting the images into the insulation skin surface images in a fixed standard form, and performing filtering and noise reduction processing on the converted insulation skin surface images.
Furthermore, the calculation formula of the actual damaged area of the surface of the insulating layer of each section of the power transmission sub-circuit in the power distribution network is si′＝k*si，si' is expressed asThe actual damaged area of the surface of the insulating layer of the i-th section of the power transmission sub-line in the power grid is expressed by k, which is the proportionality coefficient of image data and actual data in a standard form, siThe area of damaged insulation sheath in the insulation sheath surface image of the i-th section of the power transmission sub-line in the power distribution network is shown.
Furthermore, the line height measuring module comprises a laser range finder, the laser range finder is installed on the unmanned aerial vehicle, the unmanned aerial vehicle is controlled to stop at the horizontal height of the central point position of each section of the power transmission sub-line in the power distribution network respectively, a fine laser beam is emitted to the ground at the central point position of the corresponding section of the power transmission sub-line, the photoelectric element receives the laser beam reflected on the ground at the central point position of the corresponding section of the power transmission sub-line respectively, the time from emitting to receiving of each laser beam is counted, and the line height at the central point position of each section of the power transmission sub-line in the power distribution network is obtained through analysis.
Further, the comprehensive safety influence coefficient calculation formula of each section of power transmission sub-circuit in the power distribution network is
ψiExpressed as the comprehensive safety influence coefficient of the i-th section of the power transmission sub-circuit in the power distribution network, e is expressed as a natural number which is equal to 2.718, and lambdas,λxThe safety influence proportionality coefficient s respectively expressed as the surface damage area of the insulating sheath and the number of broken strands of the electric wire in the electric transmission linei' expressed as the actual damaged area, x, of the insulation skin surface of the i-th section of the power transmission sub-line in the distribution networkiThe number of broken strands of the electric wires in the ith section of the power transmission sub-line in the power distribution network is represented, mu and eta are respectively represented as the influence coefficients of the height of the line and the wind power on the safety of the power transmission line, and delta hiExpressed as the comparison difference value h between the line height at the central point position of the ith section of the power transmission sub-line in the power distribution network and the standard line heightSign boardExpressed as the standard line height of the transmission line in the distribution network, rho is expressed as the air density in the atmosphere and is equal to 1.293kg/m3，vmaxAnd theta is respectively expressed as the maximum wind speed and the wind direction angle in the region of the power distribution network in recent years.
Has the advantages that:
(1) the invention provides an intelligent online monitoring method for the state of a power transmission line of a smart power grid based on big data analysis, which divides the power transmission line in a power distribution network into sections of power transmission sub-lines, collects insulating skin surface images of the sections of the power transmission sub-lines in the power distribution network, performs image normalization processing, thereby reducing the time and the task amount required by image analysis, simultaneously obtains the damaged area of an insulating skin in the insulating skin surface images of the sections of the power transmission sub-lines in the power distribution network, calculates the actual damaged area of the insulating skin surface of the sections of the power transmission sub-lines in the power distribution network, thereby saving a large amount of human resources, avoiding the problems of inconsistent knowledge reserve, experience capability and reference standard of personnel, improving the accuracy of monitoring data, increasing the power supply reliability of the power distribution network, scans the inside of the sections of the power transmission sub-lines in the power distribution network, and obtains the number of broken strands of the electric wires in the sections of the power transmission sub-lines in the power distribution network, therefore, the hysteresis of monitoring information is avoided, the line height at the central point position of each section of power transmission sub-circuit in the power distribution network is measured, the line height difference at the central point position of each section of power transmission sub-circuit in the power distribution network is contrastively analyzed, and reliable reference data are provided for calculating the comprehensive safety influence coefficient of each section of power transmission sub-circuit in the power distribution network in the later period.
(2) According to the invention, whether each section of the power transmission sub-circuit is in a dangerous stage or not is analyzed by calculating the comprehensive safety influence coefficient of each section of the power transmission sub-circuit in the power distribution network, and each section of the power transmission sub-circuit in the dangerous stage is maintained or replaced, so that the power transmission line in the power distribution network can be effectively treated in a targeted manner in time, the safe power supply of the power distribution network is ensured, and the power consumption requirements of people are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the method steps of the present invention;
fig. 2 is a schematic view of a module connection structure according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an online intelligent monitoring method for the transmission line state of the smart grid based on big data analysis includes the following steps:
s1, dividing the power transmission line in the power distribution network into sections of power transmission sub-lines, and numbering the sections in sequence according to a set sequence;
s2, simultaneously acquiring insulation skin surface images of each section of power transmission sub-circuit in the power distribution network, and performing image normalization processing;
s3, obtaining damaged areas of the insulating skins in the insulating skin surface images of all sections of power transmission sub-circuits in the power distribution network, and calculating the actual damaged areas of the insulating skin surfaces of all sections of power transmission sub-circuits in the power distribution network;
s4, scanning each section of power transmission sub-circuit in the power distribution network simultaneously to obtain the number of broken strands of wires in each section of power transmission sub-circuit in the power distribution network;
s5, measuring the line height at the central point position of each section of the power transmission sub-line in the power distribution network, and comparing and analyzing the line height difference at the central point position of each section of the power transmission sub-line in the power distribution network;
and S6, calculating the comprehensive safety influence coefficient of each section of the power transmission sub-circuit in the power distribution network, analyzing whether each section of the power transmission sub-circuit is in a dangerous stage, and maintaining or replacing each section of the power transmission sub-circuit in the dangerous stage.
Referring to fig. 2, the intelligent online monitoring method for the state of the power transmission line of the smart power grid based on big data analysis uses an intelligent online monitoring system for the state of the power transmission line of the smart power grid based on big data analysis, and comprises a line dividing module, a line image acquisition module, a line image processing module, a damaged area acquisition module, a damaged area analysis module, a broken strand number statistics module, a line height measurement module, a line height analysis module, an analysis server, a cloud monitoring platform and a storage database.
The line image acquisition module is respectively connected with the line dividing module and the line image processing module, the damaged area acquisition module is respectively connected with the line image processing module, the damaged area analysis module and the storage database, the line height analysis module is respectively connected with the line height measurement module, the analysis server and the storage database, and the analysis server is respectively connected with the damaged area analysis module, the broken stock quantity counting module, the cloud monitoring platform and the storage database.
The line division module is used for dividing the power transmission lines in the power distribution network, dividing the power transmission lines in the power distribution network into a plurality of sections of power transmission sub-lines according to the positions of all electric poles erected on the power transmission lines, numbering the sections of power transmission sub-lines in the power distribution network in sequence according to a set sequence, wherein the numbers of the sections of power transmission sub-lines in the power distribution network are respectively 1,2, a.
The line image acquisition module comprises a high-definition camera, wherein the high-definition camera is installed on an unmanned aerial vehicle and used for receiving the serial numbers of all sections of transmission sub-lines in the power distribution network, the serial numbers of all sections of transmission sub-lines in the power distribution network are sent by the line division module, the unmanned aerial vehicle is controlled to carry out all-dimensional shooting on the insulating skin surfaces of all sections of transmission sub-lines in the power distribution network, all-position insulating skin surface sub-images of all sections of transmission sub-lines in the power distribution network are acquired, all-position insulating skin surface sub-images of all sections of transmission sub-lines in the power distribution network are integrated, the insulating skin surface images of all sections of transmission sub-lines in the power distribution network are obtained, the insulating skin surface images of all sections of transmission sub-lines in the power distribution network are counted, and an insulating skin surface image set P (P) of all sections of transmission sub-lines in the power distribution network is formed1,p2,...,pi,...,pn)，piRepresenting the insulation skin surface image of the ith section of the power transmission sub-circuit in the power distribution networkAnd transmitting the insulating skin surface image set of each section of power transmission sub-line in the network to a line image processing module.
The line image processing module is used for receiving the insulation skin surface image set of each section of power transmission sub-line in the power distribution network sent by the line image acquisition module, normalizing the received insulation skin surface images of each section of power transmission sub-line in the power distribution network, converting the images into insulation skin surface images in a fixed standard form, and filtering and denoising the converted insulation skin surface images, so that the time and the task amount required by image analysis are reduced, the processed insulation skin surface images of each section of power transmission sub-line in the power distribution network are counted, and the processed insulation skin surface images of each section of power transmission sub-line in the power distribution network are sent to the damaged area acquisition module.
The damaged area acquisition module is used for receiving the processed insulation skin surface images of all sections of transmission sub-lines in the power distribution network sent by the line image processing module, extracting the standard insulation skin surface images of the transmission lines in the power distribution network stored in the storage database, matching the received insulation skin surface images of all sections of transmission sub-lines in the power distribution network with the standard insulation skin surface images, acquiring the damaged area of the insulation skin in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network, counting the damaged area of the insulation skin in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network, and forming an insulation skin damaged area set S (S) in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network (S)1,s2,...,si,...,sn)，siAnd the damaged area of the insulation skin in the insulation skin surface image of the ith section of the power transmission sub-line in the power distribution network is represented, and the damaged area of the insulation skin in the insulation skin surface image of each section of the power transmission sub-line in the power distribution network is collectively sent to a damaged area analysis module.
The damaged area analysis module is used for receiving the set of damaged areas of the insulating coatings in the insulating coating surface images of all sections of power transmission sub-lines in the power distribution network sent by the damaged area acquisition module, extracting the proportional coefficient of the image data and the actual data in the standard form stored in the storage database, and calculating the insulating coating surface of all sections of power transmission sub-lines in the power distribution networkActual area of damage si′＝k*si，siThe method is characterized in that the actual damaged area of the surface of an insulating coating of an i-th section of power transmission sub-line in the power distribution network is expressed, k is a proportionality coefficient of image data and actual data in a standard form, and siThe method is characterized in that the damaged area of the insulation skin in the insulation skin surface image of the ith section of power transmission sub-line in the power distribution network is represented, and the actual damaged area of the insulation skin surface of each section of power transmission sub-line in the power distribution network is counted, so that a large amount of human resources are saved, the problems of inconsistent knowledge reserve, experience capability and reference standard of personnel are avoided, the accuracy of monitoring data is improved, the power supply reliability of the power distribution network is improved, and the actual damaged area of the insulation skin surface of each section of power transmission sub-line in the power distribution network is sent to an analysis server.
The number statistics module for broken strands comprises an X-ray detector which is used for counting the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, scanning each section of transmission sub-line in the power distribution network through the X-ray detector to obtain the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, counting the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, and forming a set X (X) of the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network1,x2,...,xi,...,xn)，xiThe number of broken strands of the electric wires in the ith section of the power transmission sub-line in the power distribution network is represented, and the number of broken strands of the electric wires in each section of the power transmission sub-line in the power distribution network is collectively sent to the analysis server, so that the hysteresis of monitoring information is avoided.
The line height measuring module comprises a laser range finder, wherein the laser range finder is installed on an unmanned aerial vehicle and used for measuring the line height of the central point position of each section of power transmission sub-line in the power distribution network, the horizontal height of the central point position of each section of power transmission sub-line in the power distribution network is controlled by controlling the unmanned aerial vehicle to respectively stay at the horizontal height of the central point position of each section of power transmission sub-line in the power distribution network, a fine laser beam is emitted to the ground of the central point position of the corresponding section of power transmission sub-line, the laser beams reflected on the ground of the central point position of the corresponding section of power transmission sub-line are respectively received by a photoelectric element, the time from emission to reception of each laser beam is counted, and the central point position of each section of power transmission sub-line in the power distribution network is obtained through analysisCalculating the line height at the central point of each section of the power transmission sub-line in the power distribution network to form a line height set H (H) at the central point of each section of the power transmission sub-line in the power distribution network1,h2,...,hi,...,hn)，hiThe line height is expressed as the line height at the central point position of the ith section of the power transmission sub-line in the power distribution network, and the line height set at the central point position of each section of the power transmission sub-line in the power distribution network is sent to the line height analysis module.
The line height analysis module is used for receiving the line height set at the central point position of each section of power transmission sub-line in the power distribution network sent by the line height measurement module, extracting the standard line height of the power transmission line in the power distribution network stored in the storage database, and comparing the received line height at the central point position of each section of power transmission sub-line in the power distribution network with the standard line height to obtain the line height difference set delta H (delta H) at the central point position of each section of power transmission sub-line in the power distribution network1,Δh2,...,Δhi,...,Δhn)，ΔhiThe method comprises the steps of representing the comparison difference value between the height of the line at the central point position of the ith section of power transmission sub-line in the power distribution network and the height of the standard line, sending the line height difference value set at the central point position of each section of power transmission sub-line in the power distribution network to an analysis server, and providing reliable reference data for calculating the comprehensive safety influence coefficient of each section of power transmission sub-line in the power distribution network in the later period.
The analysis server is used for receiving the actual damaged area of the insulating skin surface of each section of transmission sub-line in the power distribution network sent by the damaged area analysis module, receiving the collection of the number of broken strands of the electric wires in each section of transmission sub-line in the power distribution network sent by the broken strand number statistics module, receiving the collection of the line height difference value at the position of the central point of each section of transmission sub-line in the power distribution network sent by the line height analysis module, respectively extracting and storing the maximum wind speed and wind direction angle of the area of the power distribution network in the recent years, the safety influence proportion coefficient of the damaged area of the insulating skin surface and the number of broken strands of the electric wires in the power transmission line, and the influence coefficient of the line height and the wind power size on the safety of the power transmission line, and calculating the comprehensive damaged area of each section of transmission sub-line in the power distribution networkCoefficient of safety impact
ψiExpressed as the comprehensive safety influence coefficient of the i-th section of the power transmission sub-circuit in the power distribution network, e is expressed as a natural number which is equal to 2.718, and lambdas,λxThe safety influence proportionality coefficient s respectively expressed as the surface damage area of the insulating sheath and the number of broken strands of the electric wire in the electric transmission linei' expressed as the actual damaged area, x, of the insulation skin surface of the i-th section of the power transmission sub-line in the distribution networkiThe number of broken strands of the electric wires in the ith section of the power transmission sub-line in the power distribution network is represented, mu and eta are respectively represented as the influence coefficients of the height of the line and the wind power on the safety of the power transmission line, and delta hiExpressed as the comparison difference value h between the line height at the central point position of the ith section of the power transmission sub-line in the power distribution network and the standard line heightSign boardExpressed as the standard line height of the transmission line in the distribution network, rho is expressed as the air density in the atmosphere and is equal to 1.293kg/m3，vmaxTheta is respectively expressed as the maximum wind speed and the maximum wind direction angle in the area of the power distribution network in recent years, and the comprehensive safety influence coefficient of each section of the power transmission sub-circuit in the power distribution network is counted;
meanwhile, the analysis server extracts the standard safety influence coefficient of the power transmission line in the power distribution network stored in the storage database, compares the comprehensive safety influence coefficient of each section of power transmission sub-line in the power distribution network with the standard safety influence coefficient, if the comprehensive safety influence coefficient of a certain section of power transmission sub-line in the power distribution network is smaller than the standard safety influence coefficient, the section of power transmission sub-line is in a safety stage, if the comprehensive safety influence coefficient of a certain section of power transmission sub-line in the power distribution network is larger than or equal to the standard safety influence coefficient, the section of power transmission sub-line is in a dangerous stage, counts the number of each power transmission sub-line in the dangerous stage in the power distribution network, and sends the number of each power transmission sub-line in the dangerous stage in the power distribution network to the cloud monitoring platform.
The cloud monitoring platform is used for receiving the serial numbers of the power transmission sub-circuits in the dangerous stage in the power distribution network sent by the analysis server and informing related personnel to maintain or replace the power transmission sub-circuits in the dangerous stage, so that the power transmission sub-circuits in the power distribution network can be timely and effectively subjected to targeted processing, the safe power supply of the power distribution network is guaranteed, and the power consumption requirements of people are met.
The storage database is used for storing a standard insulation skin surface image of the power transmission line in the power distribution network, and simultaneously storing a proportionality coefficient k of image data in a standard form and actual data and a standard line height h of the power transmission line in the power distribution networkSign boardStoring the maximum wind speed v occurring in the region of the distribution network in recent yearsmaxAnd a wind direction angle theta, and safety influence proportional coefficients of the surface damage area of the insulating sheath and the number of broken strands of the electric wire in the power transmission line are stored and recorded as lambda respectivelys,λxAnd simultaneously storing the influence coefficients of the height of the line and the wind power on the safety of the power transmission line, respectively recording as mu and eta, and storing the standard safety influence coefficients of the power transmission line in the power distribution network.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (2)
1. A smart grid power transmission line state online intelligent monitoring method based on big data analysis is characterized in that: the method comprises the following steps:
s1, dividing the power transmission line in the power distribution network into sections of power transmission sub-lines, and numbering the sections in sequence according to a set sequence;
s2, simultaneously acquiring insulation skin surface images of each section of power transmission sub-circuit in the power distribution network, and performing image normalization processing;
s3, obtaining damaged areas of the insulating skins in the insulating skin surface images of all sections of power transmission sub-circuits in the power distribution network, and calculating the actual damaged areas of the insulating skin surfaces of all sections of power transmission sub-circuits in the power distribution network;
s4, scanning each section of power transmission sub-circuit in the power distribution network simultaneously to obtain the number of broken strands of wires in each section of power transmission sub-circuit in the power distribution network;
s5, measuring the line height at the central point position of each section of the power transmission sub-line in the power distribution network, and comparing and analyzing the line height difference at the central point position of each section of the power transmission sub-line in the power distribution network;
s6, calculating the comprehensive safety influence coefficient of each section of power transmission sub-circuit in the power distribution network, analyzing whether each section of power transmission sub-circuit is in a dangerous stage, and maintaining or replacing each section of power transmission sub-circuit in the dangerous stage;
the intelligent power grid power transmission line state online intelligent monitoring method based on big data analysis uses an intelligent power grid power transmission line state online intelligent monitoring system based on big data analysis, and comprises a line dividing module, a line image acquisition module, a line image processing module, a damaged area acquisition module, a damaged area analysis module, a broken strand number statistics module, a line height measurement module, a line height analysis module, an analysis server, a cloud monitoring platform and a storage database;
the system comprises a line image acquisition module, a line image dividing module, a line image processing module, a damaged area acquisition module, a line height measurement module, an analysis server and a storage database, wherein the line image acquisition module is respectively connected with the line dividing module and the line image processing module;
the line dividing module is used for dividing the power transmission line in the power distribution network, dividing the power transmission line in the power distribution network into a plurality of sections of power transmission sub-lines according to the positions of electric poles erected on the power transmission line, numbering the sections of power transmission sub-lines in the power distribution network in sequence according to a set sequence, wherein the numbers of the sections of power transmission sub-lines in the power distribution network are respectively 1,2, a.
The line image acquisition module is used for receiving the serial numbers of the sections of the power transmission sub-lines in the power distribution network sent by the line division module and acquiring images of the surfaces of the insulating skins of the sections of the power transmission sub-lines in the power distribution network,counting the insulation skin surface images of each section of power transmission sub-line in the power distribution network to form an insulation skin surface image set P (P) of each section of power transmission sub-line in the power distribution network1,p2,...,pi,...,pn)，piThe insulation skin surface images are expressed as insulation skin surface images of the ith section of power transmission sub-line in the power distribution network, and the insulation skin surface images of all sections of power transmission sub-lines in the power distribution network are sent to the line image processing module in a set mode;
the line image processing module is used for receiving the insulation skin surface image set of each section of power transmission sub-line in the power distribution network sent by the line image acquisition module, carrying out image processing on the received insulation skin surface image of each section of power transmission sub-line in the power distribution network, counting the processed insulation skin surface image of each section of power transmission sub-line in the power distribution network, and sending the processed insulation skin surface image of each section of power transmission sub-line in the power distribution network to the damaged area acquisition module;
the damaged area acquisition module is used for receiving the processed insulation skin surface images of all sections of transmission sub-lines in the power distribution network sent by the line image processing module, extracting the standard insulation skin surface images of the transmission lines in the power distribution network stored in the storage database, matching the received insulation skin surface images of all sections of transmission sub-lines in the power distribution network with the standard insulation skin surface images, acquiring the damaged area of the insulation skin in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network, counting the damaged area of the insulation skin in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network, and forming an insulation skin damaged area set S (S) in the insulation skin surface images of all sections of transmission sub-lines in the power distribution network (S)1,s2,...,si,...,sn)，siRepresenting the damaged area of the insulation skin in the insulation skin surface image of the ith section of power transmission sub-line in the power distribution network, and sending the damaged area set of the insulation skin in the insulation skin surface image of each section of power transmission sub-line in the power distribution network to a damaged area analysis module;
the damaged area analysis module is used for receiving a set of damaged areas of the insulating skin in the insulating skin surface image of each section of power transmission sub-line in the power distribution network sent by the damaged area acquisition module, extracting a proportional coefficient of image data and actual data in a standard form stored in a storage database, calculating the actual damaged area of the insulating skin surface of each section of power transmission sub-line in the power distribution network, counting the actual damaged area of the insulating skin surface of each section of power transmission sub-line in the power distribution network, and sending the actual damaged area of the insulating skin surface of each section of power transmission sub-line in the power distribution network to the analysis server;
the number statistics module for broken strands comprises an X-ray detector which is used for counting the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, scanning each section of transmission sub-line in the power distribution network through the X-ray detector to obtain the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, counting the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network, and forming a set X (X) of the number of broken strands of electric wires in each section of transmission sub-line in the power distribution network1,x2,...,xi,...,xn)，xiThe number of broken strands of the electric wires in the ith section of the transmission sub-line in the power distribution network is represented, and the number of broken strands of the electric wires in each section of the transmission sub-line in the power distribution network is collectively sent to an analysis server;
the line height measuring module is used for measuring the line height at the central point position of each section of power transmission sub-line in the power distribution network, counting the line height at the central point position of each section of power transmission sub-line in the power distribution network, and forming a line height set H (H) at the central point position of each section of power transmission sub-line in the power distribution network1,h2,...,hi,...,hn)，hiThe line height is expressed as the line height at the central point position of the ith section of power transmission sub-line in the power distribution network, and the line height set at the central point position of each section of power transmission sub-line in the power distribution network is sent to a line height analysis module;
the line height analysis module is used for receiving the line height set at the central point position of each section of power transmission sub-line in the power distribution network sent by the line height measurement module, extracting the standard line height of the power transmission line in the power distribution network stored in the storage database, and comparing the received line height at the central point position of each section of power transmission sub-line in the power distribution network with the standard line height to obtain the medium-level height of each section of power transmission sub-line in the power distribution networkSet of line height differences Δ H (Δ H) at the location of the center point1,Δh2,...,Δhi,...,Δhn)，ΔhiThe difference value is expressed as a comparison difference value between the height of the line at the central point position of the ith section of the power transmission sub-line in the power distribution network and the height of the standard line, and the line height difference value set at the central point position of each section of the power transmission sub-line in the power distribution network is sent to an analysis server;
the analysis server is used for receiving the actual damaged area of the insulating skin surface of each section of transmission sub-line in the power distribution network sent by the damaged area analysis module, receiving the collection of the number of broken strands of the electric wires in each section of transmission sub-line in the power distribution network sent by the broken strand number statistics module, receiving the collection of the line height difference value at the position of the central point of each section of transmission sub-line in the power distribution network sent by the line height analysis module, respectively extracting and storing the maximum wind speed and wind direction angle of the area where the power distribution network is located in recent years, the safety influence proportion coefficient of the damaged area of the insulating skin surface in the power transmission line and the number of broken strands of the electric wires, and the influence coefficient of the line height and the wind power size on the safety of the power transmission line, calculating the comprehensive safety influence coefficient of each section of transmission sub-line in the power distribution network, and counting the comprehensive safety influence coefficient of each section of transmission sub-line in the power distribution network, meanwhile, extracting standard safety influence coefficients of power transmission lines in the power distribution network stored in the storage database, comparing the comprehensive safety influence coefficients of all sections of power transmission sub-lines in the power distribution network with the standard safety influence coefficients, if the comprehensive safety influence coefficients of a certain section of power transmission sub-lines in the power distribution network are smaller than the standard safety influence coefficients, indicating that the section of power transmission sub-lines is in a safety stage, if the comprehensive safety influence coefficients of a certain section of power transmission sub-lines in the power distribution network are larger than or equal to the standard safety influence coefficients, indicating that the section of power transmission sub-lines is in a dangerous stage, counting the numbers of all power transmission sub-lines in the dangerous stage in the power distribution network, and sending the numbers of all power transmission sub-lines in the dangerous stage in the power distribution network to a cloud monitoring platform;
the cloud monitoring platform is used for receiving the number of each power transmission sub-line in the dangerous stage in the power distribution network sent by the analysis server and informing relevant personnel to maintain or replace each power transmission sub-line in the dangerous stage;
the storage database is used for storing a standard insulation skin surface image of the power transmission line in the power distribution network, and simultaneously storing a proportionality coefficient k of image data in a standard form and actual data and a standard line height h of the power transmission line in the power distribution networkSign boardStoring the maximum wind speed v occurring in the region of the distribution network in recent yearsmaxAnd a wind direction angle theta, and safety influence proportional coefficients of the surface damage area of the insulating sheath and the number of broken strands of the electric wire in the power transmission line are stored and recorded as lambda respectivelys,λxSimultaneously storing the influence coefficients of the line height and the wind power on the safety of the power transmission line, respectively recording as mu and eta, and storing the standard safety influence coefficients of the power transmission line in the power distribution network;
the line image acquisition module comprises a high-definition camera, wherein the high-definition camera is installed on the unmanned aerial vehicle, the unmanned aerial vehicle is controlled to carry out all-dimensional shooting on the surface of the insulating skin of each section of the power transmission sub-line in the power distribution network, sub-images of the surfaces of all the positions of the insulating skins of each section of the power transmission sub-line in the power distribution network are acquired, and the sub-images of all the positions of the surfaces of all the positions of the insulating skins of each section of the power transmission sub-line in the power distribution network are integrated to obtain the surface images of the insulating skin of each section of the power transmission sub-line in the power distribution network;
the line image processing module is used for processing the images of the insulating skin surface of each section of the power transmission sub-line in the power distribution network into images of the insulating skin surface in a fixed standard form, and filtering and denoising the converted images of the insulating skin surface;
the calculation formula of the actual damaged area of the surface of the insulating layer of each section of the power transmission sub-line in the power distribution network is s'i＝k*si，s′iExpressed as the actual damaged area of the surface of the insulating layer of the i-th section of the power transmission sub-line in the power distribution network, k is expressed as the proportionality coefficient of image data and actual data in a standard form, and siThe area of damaged insulation skin in an insulation skin surface image of the ith section of the power transmission sub-line in the power distribution network is represented;
the comprehensive safety influence coefficient calculation formula of each section of power transmission sub-circuit in the power distribution network is
ψiExpressed as the comprehensive safety influence coefficient of the i-th section of the power transmission sub-circuit in the power distribution network, e is expressed as a natural number which is equal to 2.718, and lambdas,λxSafety influence proportionality coefficients s 'respectively expressed as insulation sheath surface damage area and wire broken strand number in power transmission line'iExpressed as the actual damaged area, x, of the insulation skin surface of the i-th section of the power transmission sub-line in the distribution networkiThe number of broken strands of the electric wires in the ith section of the power transmission sub-line in the power distribution network is represented, mu and eta are respectively represented as the influence coefficients of the height of the line and the wind power on the safety of the power transmission line, and delta hiExpressed as the comparison difference value h between the line height at the central point position of the ith section of the power transmission sub-line in the power distribution network and the standard line heightSign boardExpressed as the standard line height of the transmission line in the distribution network, rho is expressed as the air density in the atmosphere and is equal to 1.293kg/m3，vmaxTheta is respectively expressed as the maximum wind speed and the maximum wind direction angle in the region of the power distribution network in recent years;
dividing a power transmission line in a power distribution network into sections of power transmission sub-lines, acquiring insulation skin surface images of the sections of power transmission sub-lines in the power distribution network, carrying out image normalization processing, simultaneously acquiring insulation skin damaged areas in the insulation skin surface images of the sections of power transmission sub-lines in the power distribution network, calculating the actual damaged areas of the insulation skin surfaces of the sections of power transmission sub-lines in the power distribution network, scanning the sections of power transmission sub-lines in the power distribution network, acquiring the number of broken wires in the sections of power transmission sub-lines in the power distribution network, simultaneously measuring the line height at the central point position of the sections of power transmission sub-lines in the power distribution network, carrying out comparative analysis on the line height difference at the central point position of the sections of power transmission sub-lines in the power distribution network, and carrying out the comparison analysis on the line height difference at the central point position of the power transmission sub-lines in the power distribution network according to the actual damaged areas, the number of broken wires in the sections of power transmission sub-lines, the line height difference at the central point position of the sections of the power transmission sub-lines and the maximum wind speed and wind direction angle in the area of the power distribution network in recent years, And calculating the comprehensive safety influence coefficient of each section of the power transmission sub-circuit in the power distribution network by the safety influence proportional coefficient of the surface damage area of the insulating sheath in the power transmission line and the number of the broken strands of the electric wire, the influence coefficient of the height of the circuit and the wind power on the safety of the power transmission line.
2. The online intelligent monitoring method for the transmission line state of the smart grid based on big data analysis according to claim 1, characterized in that: the line height measuring module comprises a laser range finder, the laser range finder is installed on an unmanned aerial vehicle, the unmanned aerial vehicle is controlled to stop at the horizontal height of the central point position of each section of power transmission sub-line in the power distribution network respectively, a beam of thin laser is emitted to the ground at the central point position of the corresponding section of power transmission sub-line, the photoelectric element receives laser beams reflected on the ground at the central point position of the corresponding section of power transmission sub-line respectively, the time from emission to reception of each laser beam is counted, and the line height at the central point position of each section of power transmission sub-line in the power distribution network is obtained through analysis.
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