CN117792269A - Operation and maintenance method and system for photovoltaic power generation core equipment based on accurate positioning - Google Patents
Operation and maintenance method and system for photovoltaic power generation core equipment based on accurate positioning Download PDFInfo
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Abstract
The invention belongs to the technical field of power grid safety, and particularly relates to a photovoltaic power generation core equipment operation and maintenance method and system based on accurate positioning. The invention discloses a photovoltaic power generation core equipment operation and maintenance method and system based on accurate positioning, wherein the method comprises the following steps: marking square matrix position information based on a double-star positioning system, and making a routing inspection path; utilizing a map APP to navigate and position the inverter and the photovoltaic module; acquiring a square matrix view based on unmanned aerial vehicle aerial photography, marking equipment and analyzing the characteristics of the square matrix; the intelligent scanning and discrete rate analysis of IV are utilized to rapidly locate the low-efficiency group string, and the fault location is combined with the standing book analysis; setting a patrol path and a two-dimensional code, standardizing patrol contents, carrying out unmanned aerial vehicle patrol, and optimizing a patrol mode; and collecting, analyzing, running and maintaining indexes and optimizing running and maintaining means. The invention can improve the efficiency, quality, safety and income of equipment operation and power generation, and save the time, cost and resources of equipment inspection and maintenance.
Description
Technical Field
The invention belongs to the technical field of power grid safety, and particularly relates to a photovoltaic power generation core equipment operation and maintenance method and system based on accurate positioning.
Background
And (one) the photovoltaic area square matrix is wide in distribution, scattered and far.
The mountain photovoltaic power station has the characteristics of scattered equipment, remote geographic positions, complex land features and the like, taking pioneer photovoltaic stations as an example, the occupied area of the photovoltaic square matrix is about 6000 mu, the photovoltaic square matrix is distributed in three villages and towns (tea shop villages, gold dragon villages and eight towns), the farthest square matrix is about 30km away from the booster station, the single-sided travel time is 1 hour, if a reasonable patrol route cannot be planned, the workload of operation and maintenance personnel is greatly improved, photovoltaic power generation equipment (inverters and photovoltaic strings) is irregularly distributed on mountain forest hilly land features, and the equipment is quickly found to be a difficult problem of operation and maintenance work.
(II) low operation and maintenance efficiency affecting the generated energy
The number of inverters is more than 400, the number of photovoltaic panels is more than 21 ten thousand, equipment is easy to fail in the open air and the outdoor environment, once power generation core equipment such as inverters, photovoltaic strings and box-type transformers are required to be processed in time after being failed, generated energy is lost to cause light abandoning if the power generation core equipment cannot be processed in time, and the economic benefit of enterprises is reduced, so that the timely discovery and processing of equipment failure is extremely important for photovoltaic operation and maintenance.
(III) the fire accident can not be extinguished in time in the early stage
The short circuit fault of the photovoltaic equipment has the possibility of causing the fire disaster in the photovoltaic area, the fire disaster in the photovoltaic area can cause mountain fires to burn the photovoltaic equipment and nearby forests, meanwhile, the fire disaster in the early stage can not be extinguished in time to cause the expansion of the fire disaster and can not be extinguished, the photovoltaic area is usually at a remote position with steep topography, the fire fighting team can not extinguish the fire disaster easily, and if the fire disaster in the early stage can not be found and processed in time, huge economic losses can be brought to the country and enterprises. At present, mountain photovoltaic operation and maintenance management in the industry is always in an exploration stage, and a high-efficiency and reliable management mode can solve the fire hazard of a photovoltaic area, bring economic benefits to enterprises and promote the high-quality development of new energy industry of the enterprises.
Disclosure of Invention
The present invention has been made in view of the above-described problems.
Therefore, the technical problems solved by the invention are as follows: how to realize the quick positioning and the high-efficient management of equipment in mountain region photovoltaic power plant, improve running performance and the generating efficiency of equipment, reduce inspection, maintenance cost and the fault rate of equipment.
In order to solve the technical problems, the invention provides the following technical scheme: a photovoltaic power generation core equipment operation and maintenance method based on accurate positioning comprises the following steps: marking square matrix position information based on a double-star positioning system, and making a routing inspection path; utilizing a map APP to navigate and position the inverter and the photovoltaic module; acquiring a square matrix view based on unmanned aerial vehicle aerial photography, marking equipment and analyzing the characteristics of the square matrix; the intelligent scanning and discrete rate analysis of IV are utilized to rapidly locate the low-efficiency group string, and the fault location is combined with the standing book analysis; setting a patrol path and a two-dimensional code, standardizing patrol contents, carrying out unmanned aerial vehicle patrol, and optimizing a patrol mode; and collecting, analyzing, running and maintaining indexes and optimizing running and maintaining means.
As a preferable scheme of the operation and maintenance method of the photovoltaic power generation core equipment based on accurate positioning, the invention comprises the following steps: the step of establishing a routing inspection path comprises the steps of utilizing a GPS or Beidou double-satellite positioning system to acquire longitude and latitude coordinates of each square matrix and the linear distance between each square matrix and a booster station;
drawing a photovoltaic square matrix zoning diagram according to the acquired longitude and latitude coordinates, and marking the number, the area and the capacity of the square matrix on the diagram;
according to the photovoltaic square matrix regional graph and the square matrix state, working paths for equipment inspection and maintenance are formulated, and path selection is carried out according to the most appropriate path planning algorithm;
selecting a path planning algorithm according to different working targets;
if the objective is to process faults or abnormal square matrixes as soon as possible, using a Di Jie Style algorithm to obtain the shortest time or distance required for reaching all faults or abnormal square matrixes from a monitoring room, and carrying out inspection and maintenance according to a path;
if the goal is to cover all square matrixes, a minimum spanning tree algorithm is used for solving a tree connected with the minimum weight of all square matrixes, and inspection and maintenance are carried out according to the edges of the tree;
if the goal is to complete the inspection and maintenance of all the square matrixes in a limited time, and return to the monitoring room, a genetic algorithm is used for solving the shortest or optimal path from the monitoring room after all the square matrixes are passed once and only once, and the inspection and maintenance are carried out according to the path.
As a preferable scheme of the operation and maintenance method of the photovoltaic power generation core equipment based on accurate positioning, the invention comprises the following steps: the map APP is utilized to navigate and position the inverter and the photovoltaic module, the position of each photovoltaic inverter is accurately positioned on the mobile phone map APP, the position of each photovoltaic inverter is checked with the inverter monitoring system, inverter position group sharing is established, the position information of all inverters is uploaded to the cloud server, and the position information is pushed to all operation and maintenance personnel in real time through the mobile phone map APP;
when the upper computer sends an inverter abnormal signal, sending alarm information to related operation and maintenance personnel through a mobile phone map APP, and displaying the position and fault code of the fault inverter;
and the operation and maintenance personnel quickly find the position of the fault inverter through the mobile phone map APP navigation function and perform corresponding processing according to the fault code.
As a preferable scheme of the operation and maintenance method of the photovoltaic power generation core equipment based on accurate positioning, the invention comprises the following steps: the method comprises the steps of analyzing the characteristics of the square matrix, namely, taking an aerial photo of a photovoltaic square matrix by using an unmanned aerial vehicle, obtaining an aerial photo image with high definition, and transmitting the image to an APP;
the method comprises the steps of carrying out inverter position identification and marking on an aerial image, displaying the number, model, capacity and running state of an inverter, wherein the inverter position identification and marking are expressed by the following formulas:
y＝f(x；θ)
Wherein y is the output inverter position and category information, x is the input aerial image, θ is a parameter of the deep neural network model, and f is a function of the deep neural network model;
and formulating a device inspection and maintenance working path according to the aerial image and the inverter position information.
As a preferable scheme of the operation and maintenance method of the photovoltaic power generation core equipment based on accurate positioning, the invention comprises the following steps: the analyzing and positioning the fault position comprises planning a route in advance through a double satellite zone and a map APP navigation map;
the unmanned aerial vehicle is used for visual high-efficiency inspection, so that inspection time is shortened, and inspection quality is improved;
the low-efficiency group strings are rapidly positioned through IV intelligent scanning and discrete rate analysis, and processing suggestions and component health degree evaluation are given; the intelligent IV scanning draws an IV curve by measuring current values of the photovoltaic string under different voltages, and judges the working state and performance of the string according to the shape and characteristic parameters of the curve, wherein the working state and performance are expressed as follows:
wherein I is the output current of the photovoltaic string, I ph Is a photo-generated current, I 0 Is reverse saturation current, V is output voltage of the photovoltaic string, R s Is a series resistance, R sh Is a parallel resistor, q is a meta-charge, n is a diode quality factor, k is a boltzmann constant, and T is a battery plate temperature;
The discrete rate analysis obtains a discrete rate by calculating the deviation of the generated energy of each square matrix or group string and the average generated energy and the ratio of the deviation to the average generated energy, and the discrete rate is expressed as follows:
wherein D is a discrete rate, P is the power generation amount of a certain square matrix or group string,the average power generation amount of all square matrixes or strings;
and comprehensively analyzing and locking the position of the fault component through the distribution diagram and the standing book, and positioning the fault photovoltaic component by utilizing the field identification.
As a preferable scheme of the operation and maintenance method of the photovoltaic power generation core equipment based on accurate positioning, the invention comprises the following steps: the optimized inspection mode comprises the steps of generating a unique two-dimensional code for each device, including the number, model, capacity and running state of the device, and associating information with a background database;
printing the generated two-dimensional code and attaching the two-dimensional code to the side of the equipment production date mark;
the operation and maintenance personnel can use the mobile phone or other scanning equipment to scan the two-dimensional code, namely, the information of the equipment can be displayed on the mobile phone or other scanning equipment, and the data of the equipment can be filled or modified;
the scanning equipment is communicated with the background database in real time, filled or modified data are uploaded to the background database, and the data of the background database are synchronized to the scanning equipment, so that the consistency and accuracy of the data are ensured;
According to technical specifications of manufacturers and industries, the inspection content is standardized;
the method comprises the steps of installing a special infrared camera for an unmanned aerial vehicle, and finding out hot spot effect, open circuit, short circuit and fracture faults of a photovoltaic module;
the flying height and the flying speed are set for the unmanned aerial vehicle, the photovoltaic square matrix is covered, a clear infrared image is obtained, and the flying height and the flying speed are calculated according to the following formula:
wherein h is the flying height, f is the focal length of the infrared camera, L is the field length of the infrared camera, G is the length of the photovoltaic module, v is the flying speed, and t is the shutter time of the infrared camera;
a reasonable flight path is planned for the unmanned aerial vehicle, so that the unmanned aerial vehicle can repeat or lose the photovoltaic array as little as possible and acquire a complete infrared image on the premise of ensuring the efficiency and the quality; the flight path is planned according to the following algorithm:
using a dynamic programming algorithm to treat all the photovoltaic matrixes as a directed graph, wherein each node represents one photovoltaic matrix, each side represents the time of flight or distance required from one photovoltaic matrix to another, then using a shortest path algorithm to calculate an optimal path from a starting position, passing through all the nodes once and only once, returning to the starting position, scanning each photovoltaic matrix along the path, and also flying one circle along the long side and then one circle along the short side;
The dynamic programming algorithm is expressed as:
f(i,j)＝maxf(i-1,j),f(i-1,j-t i )+r i
where f (i, j) represents the maximum effect obtained when the first i devices are allowed to patrol, t i Representing the time of flight of the ith device to the start position, r i Indicating the failure discovery rate or the power generation amount of the i-th device.
As a preferable scheme of the operation and maintenance method of the photovoltaic power generation core equipment based on accurate positioning, the invention comprises the following steps: the optimized operation and maintenance means comprises the steps of collecting and arranging equipment inspection and maintenance data before and after implementation, wherein the data comprise inspection, maintenance times, time, personnel, cost, failure rate and power generation indexes, and the data are made into a table for comparison and analysis;
analyzing the data by using a statistical method, calculating the equipment inspection and maintenance efficiency, cost and quality index change rate before and after implementation, and judging the implementation effect according to the positive and negative values and the size of the change rate, wherein the change rate is calculated by using the following formula:
wherein R is the rate of change, A 1 Is the value of the equipment index before implementation, A 2 Is the value of the implemented equipment index;
and summarizing the advantages and the disadvantages of the photovoltaic power station equipment positioning management according to the analysis result, and proposing improvement and optimization.
The invention further aims to provide a TCP encrypted communication portrait and risk identification system based on application layer feature identification, which can realize the functions of accurate positioning, visual inspection, intelligent identification, scientific evaluation and the like of mountain photovoltaic power station equipment by adopting technologies such as double satellite positioning, map APP navigation, unmanned aerial vehicle aerial photography, two-dimensional code identification, IV intelligent scanning, infrared imaging and the like, thereby realizing the functions of accurate positioning, visual inspection, intelligent identification, scientific evaluation and the like of the mountain photovoltaic power station equipment by adopting technologies such as double satellite positioning, map APP navigation, unmanned aerial vehicle aerial photography, two-dimensional code identification, IV intelligent scanning, infrared imaging and the like, and further solving the technical problems.
In order to solve the technical problems, the invention provides the following technical scheme: the TCP encrypted communication portrait and risk identification system based on application layer feature identification comprises a data acquisition module, a device positioning module, a device inspection module, a device identification module, a device evaluation module and a data analysis module;
the data acquisition module is used for acquiring data such as site information, equipment information, weather information and the like of the mountain photovoltaic power station and transmitting the data to the background database;
The equipment positioning module is used for determining the installation position and direction of each equipment by utilizing a double satellite positioning technology and a map APP navigation technology according to the data provided by the data acquisition module, and marking and displaying the installation position and direction on a map;
the equipment inspection module is used for carrying out visual inspection on each equipment by utilizing an unmanned aerial vehicle aerial photographing technology and a two-dimensional code identification technology according to the data provided by the equipment positioning module, and displaying the information and the state of the equipment on a mobile phone or other scanning equipment;
the equipment identification module is used for intelligently identifying each equipment by utilizing an IV intelligent scanning technology and an infrared imaging technology according to the data provided by the equipment inspection module, judging whether the equipment has faults or anomalies, and giving corresponding prompts and suggestions;
the equipment evaluation module is used for scientifically evaluating each equipment by utilizing a statistical method and a dynamic planning algorithm according to the data provided by the equipment identification module, calculating indexes such as the running performance, the power generation efficiency and the economic benefits of the equipment, and giving corresponding scores and ranks;
the data analysis module is used for analyzing and evaluating the effect of equipment positioning management of the mountain photovoltaic power station by utilizing data mining and visualization technology according to the data provided by each module, and giving corresponding reports and suggestions.
A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of a photovoltaic power generation core device operation and maintenance method based on accurate positioning.
A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor implements the steps of a method for operating and maintaining a photovoltaic power core device based on accurate positioning.
The invention has the beneficial effects that: the equipment inspection and maintenance efficiency and quality are improved, the equipment inspection and maintenance time is shortened, the equipment inspection and maintenance manpower and material resource is saved, and the working efficiency and satisfaction of operation and maintenance personnel are improved. The equipment inspection and maintenance cost and the failure rate are reduced, the risks of equipment damage and replacement are reduced, the service life of the equipment is prolonged, and the operation and maintenance cost and the risks are reduced. The generating capacity is increased, the generating efficiency is improved, the economic benefit is increased, and the competitiveness and the social benefit of the photovoltaic power station are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
Fig. 1 is a flowchart of a photovoltaic power generation core device operation and maintenance method based on accurate positioning according to an embodiment of the present invention.
Fig. 2 is a logic diagram of photovoltaic module analysis based on a method for operating and maintaining a photovoltaic power generation core device with accurate positioning according to an embodiment of the present invention.
Fig. 3 is a serial standing book statistics diagram of a photovoltaic power generation core device operation and maintenance method based on accurate positioning according to an embodiment of the present invention.
Fig. 4 is a graph comparing time required for different operation and maintenance modes of the operation and maintenance method of the photovoltaic power generation core equipment based on accurate positioning according to an embodiment of the present invention.
Fig. 5 is a block diagram of a photovoltaic power generation core equipment operation and maintenance system based on accurate positioning according to an embodiment of the present invention.
Detailed Description
So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
While the embodiments of the present invention have been illustrated and described in detail in the drawings, the cross-sectional view of the device structure is not to scale in the general sense for ease of illustration, and the drawings are merely exemplary and should not be construed as limiting the scope of the invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Also in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper, lower, inner and outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected, and coupled" should be construed broadly in this disclosure unless otherwise specifically indicated and defined, such as: can be fixed connection, detachable connection or integral connection; it may also be a mechanical connection, an electrical connection, or a direct connection, or may be indirectly connected through an intermediate medium, or may be a communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 1-4, for one embodiment of the present invention, a method for operating and maintaining a photovoltaic power generation core device based on accurate positioning is provided, including:
s1: marking square matrix position information based on a double-star positioning system, and making a routing inspection path;
further, the step of making the routing inspection path comprises the steps of obtaining longitude and latitude coordinates of each square matrix and the linear distance between each square matrix and the booster station by using a GPS/Beidou double-satellite positioning system;
drawing a photovoltaic square matrix zoning diagram according to the acquired longitude and latitude coordinates, and marking the number, the area and the capacity of the square matrix on the diagram;
according to the photovoltaic square matrix regional graph and the square matrix state, working paths for equipment inspection and maintenance are formulated, and path selection is carried out according to the most appropriate path planning algorithm;
Selecting a path planning algorithm according to different working targets;
if the objective is to process faults or abnormal square matrixes as soon as possible, using a Di Jie Style algorithm to obtain the shortest time or distance required for reaching all faults or abnormal square matrixes from a monitoring room, and carrying out inspection and maintenance according to a path;
if the goal is to cover all square matrixes, a minimum spanning tree algorithm is used for solving a tree connected with the minimum weight of all square matrixes, and inspection and maintenance are carried out according to the edges of the tree;
if the goal is to complete the inspection and maintenance of all the square matrixes in a limited time, and return to the monitoring room, a genetic algorithm is used for solving the shortest or optimal path from the monitoring room after all the square matrixes are passed once and only once, and the inspection and maintenance are carried out according to the path.
It should be noted that the above-mentioned content utilizes high definition and high coverage rate of unmanned aerial vehicle aerial photography, can acquire comprehensive photovoltaic square matrix image, has avoided blind spot and the unclear condition of manual shooting or observation. The high precision and high efficiency of the computer vision technology are utilized, the position and information of the inverter can be automatically identified and marked on the aerial image, and the complicated and error conditions of manual marking or inquiry are avoided. By utilizing the high efficiency and flexibility of the path planning algorithm, the most suitable path planning algorithm can be selected according to different working targets and priorities, and the optimal or best equipment inspection and maintenance working path is prepared, so that the time and resources are saved, and the working efficiency and quality are improved.
S2: utilizing a map APP to navigate and position the inverter and the photovoltaic module;
furthermore, the navigation positioning inverter and the photovoltaic module by using the map APP comprise the steps of accurately positioning the position of each photovoltaic inverter on the mobile phone map APP, checking with an inverter monitoring system, establishing inverter position group sharing, uploading the position information of all inverters to a cloud server, and pushing the position information to all operation and maintenance personnel in real time through the mobile phone map APP;
when the upper computer sends an inverter abnormal signal, sending alarm information to related operation and maintenance personnel through a mobile phone map APP, and displaying the position and fault code of the fault inverter;
and the operation and maintenance personnel quickly find the position of the fault inverter through the mobile phone map APP navigation function and perform corresponding processing according to the fault code.
S3: acquiring a square matrix view based on unmanned aerial vehicle aerial photography, marking equipment and analyzing the characteristics of the square matrix;
furthermore, analyzing the characteristics of the square matrix comprises the steps of using an unmanned aerial vehicle to aerial photo a photovoltaic square matrix, acquiring high-definition aerial photo images and transmitting the images to an APP;
the method comprises the steps of carrying out inverter position identification and marking on an aerial image, displaying the number, model, capacity and running state of an inverter, wherein the inverter position identification and marking are expressed by the following formulas:
y＝f(x；θ)
Wherein y is the output inverter position and category information, x is the input aerial image, θ is a parameter of the deep neural network model, and f is a function of the deep neural network model;
and formulating a device inspection and maintenance working path according to the aerial image and the inverter position information.
S4, navigating and planning a route in advance by using a zone diagram and a map APP, performing intelligent IV scanning and discrete rate analysis to quickly locate the low-efficiency group string, and analyzing and locating the fault position by combining a standing account;
further, the analyzing and positioning the fault position comprises planning a route in advance through a double satellite region and a map APP navigation map;
the unmanned aerial vehicle is used for visual high-efficiency inspection, so that inspection time is shortened, and inspection quality is improved;
the low-efficiency group strings are rapidly positioned through IV intelligent scanning and discrete rate analysis, and processing suggestions and component health degree evaluation are given; the intelligent IV scanning draws an IV curve by measuring current values of the photovoltaic string under different voltages, and judges the working state and performance of the string according to the shape and characteristic parameters of the curve, wherein the working state and performance are expressed as follows:
wherein I is the output current of the photovoltaic string, I ph Is a photo-generated current, I 0 Is reverse saturation current, V is output voltage of the photovoltaic string, R s Is a series resistance, R sh Is a parallel resistor, q is a meta-charge, n is a diode quality factor, k is a boltzmann constant, and T is a battery plate temperature;
the discrete rate analysis obtains a discrete rate by calculating the deviation of the generated energy of each square matrix or group string and the average generated energy and the ratio of the deviation to the average generated energy, and the discrete rate is expressed as follows:
wherein D is a discrete rate, P is the power generation amount of a certain square matrix or group string,the average power generation amount of all square matrixes or strings;
and comprehensively analyzing and locking the position of the fault component through the distribution diagram and the standing book, and positioning the fault photovoltaic component by utilizing the field identification.
It should be noted that the distribution diagram is a diagram showing the position and number of the photovoltaic module in the square matrix, and can be used for quickly searching and positioning the photovoltaic module. The standing book is a table for recording basic information and operation conditions of the photovoltaic module, and can be used for rapidly inquiring and analyzing the photovoltaic module. The field mark is a label such as a two-dimensional code or a bar code which is attached to the photovoltaic module, and can be used for rapidly identifying and checking the photovoltaic module. Through comprehensive use of distribution diagrams, standing accounts and field marks, the rapid locking and positioning of the fault photovoltaic module can be realized.
S5, setting a patrol path and a two-dimensional code, standardizing patrol contents, carrying out unmanned aerial vehicle patrol, and optimizing a patrol mode;
further, the optimized inspection mode comprises the steps of generating a unique two-dimensional code for each device, including the number, the model, the capacity and the running state of the device, and associating information with a background database;
printing the generated two-dimensional code and attaching the two-dimensional code to the side of the equipment production date mark;
the operation and maintenance personnel can use the mobile phone or other scanning equipment to scan the two-dimensional code, namely, the information of the equipment can be displayed on the mobile phone or other scanning equipment, and the data of the equipment can be filled or modified;
the scanning equipment is communicated with the background database in real time, filled or modified data are uploaded to the background database, and the data of the background database are synchronized to the scanning equipment, so that the consistency and accuracy of the data are ensured;
according to technical specifications of manufacturers and industries, the inspection content is standardized;
the method comprises the steps of installing a special infrared camera for an unmanned aerial vehicle, and finding out hot spot effect, open circuit, short circuit and fracture faults of a photovoltaic module;
the flying height and the flying speed are set for the unmanned aerial vehicle, the photovoltaic square matrix is covered, a clear infrared image is obtained, and the flying height and the flying speed are calculated according to the following formula:
Wherein h is the flying height, f is the focal length of the infrared camera, L is the field length of the infrared camera, G is the length of the photovoltaic module, v is the flying speed, and t is the shutter time of the infrared camera;
a reasonable flight path is planned for the unmanned aerial vehicle, so that the unmanned aerial vehicle can repeat or lose the photovoltaic array as little as possible and acquire a complete infrared image on the premise of ensuring the efficiency and the quality; the flight path is planned according to the following algorithm:
using a dynamic programming algorithm to treat all the photovoltaic matrixes as a directed graph, wherein each node represents one photovoltaic matrix, each side represents the time of flight or distance required from one photovoltaic matrix to another, then using a shortest path algorithm to calculate an optimal path from a starting position, passing through all the nodes once and only once, returning to the starting position, scanning each photovoltaic matrix along the path, and also flying one circle along the long side and then one circle along the short side;
the dynamic programming algorithm is expressed as:
f(i,j)＝maxf(i-1,j),f(i-1,j-t i )+r i
where f (i, j) represents the maximum effect obtained when the first i devices are allowed to patrol, t i Representing the time of flight of the ith device to the start position, r i Indicating the failure discovery rate or the power generation amount of the i-th device.
S6, collecting, analyzing, running and maintaining indexes and optimizing running and maintaining means.
Furthermore, the optimizing operation and maintenance means comprises the steps of collecting and arranging equipment inspection and maintenance data before and after implementation, wherein the data comprise inspection, maintenance times, time, personnel, cost, failure rate and power generation indexes, and the data are made into a table for comparison and analysis;
analyzing the data by using a statistical method, calculating the equipment inspection and maintenance efficiency, cost and quality index change rate before and after implementation, and judging the implementation effect according to the positive and negative values and the size of the change rate, wherein the change rate is calculated by using the following formula:
wherein R is the rate of change, A 1 Is the value of the equipment index before implementation, A 2 Is the value of the implemented equipment index;
and summarizing the advantages and the disadvantages of the photovoltaic power station equipment positioning management according to the analysis result, and proposing improvement and optimization.
It should be noted that, according to the analysis result, the advantages and the disadvantages of the positioning management of the photovoltaic power station equipment are summarized, so that the equipment inspection and maintenance efficiency and quality can be improved, the equipment inspection and maintenance cost and failure rate are reduced, and the advantages of generating capacity and the like are increased; solves the problems and difficulties that more technology and human resources are needed to be input, and the operation and maintenance personnel need to be trained and guided to use new technology and tools. According to the summarized result, proposing improvement and optimization, such as strengthening technical research and development and innovation, and improving the reliability and stability of new technologies and tools; the training and the assessment of operation and maintenance personnel are enhanced, and the use level and the proficiency of new technologies and tools are improved; the data collection and analysis are enhanced, and the accuracy and timeliness of the data are improved; and the supervision and evaluation are enhanced, and the working quality, the effect and other suggestions are improved. The objectivity and scientificity of the statistical method are utilized, the effect of positioning management of the photovoltaic power station equipment can be quantitatively evaluated through data comparison and analysis, and subjective assumption and one-sided judgment are avoided. By summarizing the necessity and importance of evaluation, the advantages and the disadvantages of the positioning management of the photovoltaic power station equipment can be combed from multiple angles, and suggestions of improvement and optimization are provided according to actual conditions, so that continuous improvement and perfection of work are promoted.
Example 2
A second embodiment of the invention, which differs from the previous embodiment, is:
the functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only memory (ROM), a random access memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Example 3
Referring to fig. 5, in a third embodiment of the present invention, the embodiment provides a photovoltaic power generation core device operation and maintenance method system based on accurate positioning, which includes a data acquisition module, a device positioning module, a device inspection module, a device identification module, a device evaluation module and a data analysis module;
the data acquisition module is used for acquiring data such as site information, equipment information, weather information and the like of the mountain photovoltaic power station and transmitting the data to the background database;
the equipment positioning module is used for determining the installation position and direction of each equipment by utilizing a double satellite positioning technology and a map APP navigation technology according to the data provided by the data acquisition module, and marking and displaying the installation position and direction on a map;
the equipment inspection module is used for carrying out visual inspection on each equipment by utilizing an unmanned aerial vehicle aerial photographing technology and a two-dimensional code identification technology according to the data provided by the equipment positioning module, and displaying the information and the state of the equipment on a mobile phone or other scanning equipment;
the equipment identification module is used for intelligently identifying each equipment by utilizing an IV intelligent scanning technology and an infrared imaging technology according to the data provided by the equipment inspection module, judging whether the equipment has faults or anomalies, and giving corresponding prompts and suggestions;
The equipment evaluation module is used for scientifically evaluating each equipment by utilizing a statistical method and a dynamic planning algorithm according to the data provided by the equipment identification module, calculating indexes such as the running performance, the power generation efficiency and the economic benefits of the equipment, and giving corresponding scores and ranks;
the data analysis module is used for analyzing and evaluating the effect of equipment positioning management of the mountain photovoltaic power station by utilizing data mining and visualization technology according to the data provided by each module, and giving corresponding reports and suggestions.
Example 4
In order to verify the beneficial effects of the invention, scientific demonstration is carried out through economic benefit calculation and experiments.
In order to verify the beneficial effects of the method, three tests were performed, test one: compared with the traditional method, the method has the advantages that the method has the difference in indexes such as efficiency, cost, quality and the like of mountain photovoltaic power station equipment positioning management. The two methods are used for carrying out equipment positioning management on the same mountain photovoltaic station sites, the number of the equipment is 1000, and the equipment types are an inverter and a combiner box.
And (2) testing II: compared with the traditional method, the method has the advantages that the method has the difference in the indexes of inspection, maintenance time, cost, quality and the like of the mountain photovoltaic power station equipment. The two methods carry out equipment inspection and maintenance on the same mountain photovoltaic station sites, the number of the equipment is 1000, and the equipment types are an inverter and a combiner box.
And (3) test III: compared with the traditional method, the method has the advantages that the difference of the method on indexes such as the power generation capacity, the power generation efficiency, the economic benefits and the like of the mountain photovoltaic power station is compared. The two methods are used for generating power at the same mountain photovoltaic power station site, the number of the equipment is 1000, and the equipment types are an inverter and a combiner box.
Compared with the traditional method, the method has the advantages that the efficiency, cost, quality and the like of the mountain photovoltaic power station equipment positioning management are improved remarkably, the change rate is negative or positive, and the absolute value is large. This means that the method can save time and labor for equipment positioning, improve the precision of equipment positioning and reduce the error of equipment positioning. The method can also save the time and labor for equipment inspection and maintenance, improve the quality of equipment inspection and maintenance and increase the effect of equipment inspection and maintenance. The method can also increase the generated energy, improve the power generation efficiency, increase the economic benefit and improve the competitiveness and the social benefit of the photovoltaic power station.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. The operation and maintenance method of the photovoltaic power generation core equipment based on accurate positioning is characterized by comprising the following steps of:
marking square matrix position information based on a double-star positioning system, and making a routing inspection path;
utilizing a map APP to navigate and position the inverter and the photovoltaic module;
acquiring a square matrix view based on unmanned aerial vehicle aerial photography, marking equipment and analyzing the characteristics of the square matrix;
planning a route in advance by utilizing a demarcation map and map APP navigation, rapidly positioning an inefficient group string by utilizing IV intelligent scanning and discrete rate analysis, and positioning a fault position by combining with standing account analysis;
setting a patrol path and a two-dimensional code, standardizing patrol contents, carrying out unmanned aerial vehicle patrol, and optimizing a patrol mode;
and collecting, analyzing, running and maintaining indexes and optimizing running and maintaining means.
2. The photovoltaic power generation core equipment operation and maintenance method based on accurate positioning as claimed in claim 1, wherein the method comprises the following steps: the step of establishing a routing inspection path comprises the steps of utilizing a GPS/Beidou double-satellite positioning system to acquire longitude and latitude coordinates of each square matrix and the linear distance between each square matrix and a booster station;
drawing a photovoltaic square matrix zoning diagram according to the acquired longitude and latitude coordinates, and marking the number, the area and the capacity of the square matrix on the diagram;
according to the photovoltaic square matrix regional graph and the square matrix state, working paths for equipment inspection and maintenance are formulated, and path selection is carried out according to the most appropriate path planning algorithm;
Selecting a path planning algorithm according to different working targets;
if the objective is to process faults or abnormal square matrixes as soon as possible, using a Di Jie Style algorithm to obtain the shortest time or distance required for reaching all faults or abnormal square matrixes from a monitoring room, and carrying out inspection and maintenance according to a path; if the goal is to cover all square matrixes, a minimum spanning tree algorithm is used for solving a tree connected with the minimum weight of all square matrixes, and inspection and maintenance are carried out according to the edges of the tree; if the goal is to complete the inspection and maintenance of all the square matrixes in a limited time, and return to the monitoring room, a genetic algorithm is used for solving the shortest or optimal path from the monitoring room after all the square matrixes are passed once and only once, and the inspection and maintenance are carried out according to the path.
3. The photovoltaic power generation core equipment operation and maintenance method based on accurate positioning as claimed in claim 2, wherein the method comprises the following steps: the map APP is utilized to navigate and position the inverter and the photovoltaic module, the position of each photovoltaic inverter is accurately positioned on the mobile phone map APP, the position of each photovoltaic inverter is checked with the inverter monitoring system, inverter position group sharing is established, the position information of all inverters is uploaded to the cloud server, and the position information is pushed to all operation and maintenance personnel in real time through the mobile phone map APP;
When the upper computer sends an inverter abnormal signal, sending alarm information to related operation and maintenance personnel through a mobile phone map APP, and displaying the position and fault code of the fault inverter;
and the operation and maintenance personnel quickly find the position of the fault inverter through the mobile phone map APP navigation function and perform corresponding processing according to the fault code.
4. A method for operating and maintaining a photovoltaic power generation core device based on accurate positioning according to claim 3, wherein: the method comprises the steps of analyzing the characteristics of the square matrix, namely, taking an aerial photo of a photovoltaic square matrix by using an unmanned aerial vehicle, obtaining an aerial photo image with high definition, and transmitting the image to an APP;
the method comprises the steps of carrying out inverter position identification and marking on an aerial image, displaying the number, model, capacity and running state of an inverter, wherein the inverter position identification and marking are expressed by the following formulas:
y＝f(x；θ)
wherein y is the output inverter position and category information, x is the input aerial image, θ is a parameter of the deep neural network model, and f is a function of the deep neural network model;
and formulating a device inspection and maintenance working path according to the aerial image and the inverter position information.
5. The photovoltaic power generation core equipment operation and maintenance method based on accurate positioning as claimed in claim 4, wherein the method comprises the following steps: the analyzing and positioning the fault position comprises planning a route in advance through a double satellite zone and a map APP navigation map;
The unmanned aerial vehicle is used for visual high-efficiency inspection, so that inspection time is shortened, and inspection quality is improved;
the low-efficiency group strings are rapidly positioned through IV intelligent scanning and discrete rate analysis, and processing suggestions and component health degree evaluation are given; the intelligent IV scanning draws an IV curve by measuring current values of the photovoltaic string under different voltages, and judges the working state and performance of the string according to the shape and characteristic parameters of the curve, wherein the working state and performance are expressed as follows:
wherein I is the output current of the photovoltaic string, I ph Is a photo-generated current, I 0 Is reverse saturation current, V is output voltage of the photovoltaic string, R s Is a series resistance, R sh Is a parallel resistor, q is a meta-charge, n is a diode quality factor, k is a boltzmann constant, and T is a battery plate temperature;
the discrete rate analysis obtains a discrete rate by calculating the deviation of the generated energy of each square matrix or group string and the average generated energy and the ratio of the deviation to the average generated energy, and the discrete rate is expressed as follows:
wherein D is a discrete rate, P is the power generation amount of a certain square matrix or group string,the average power generation amount of all square matrixes or strings;
and comprehensively analyzing and locking the position of the fault component through the distribution diagram and the standing book, and positioning the fault photovoltaic component by utilizing the field identification.
6. The method for operating and maintaining the photovoltaic power generation core equipment based on accurate positioning according to claim 5, wherein the optimized inspection mode comprises generating a unique two-dimensional code for each equipment, including the number, model, capacity and operating state of the equipment, and associating information with a background database;
Printing the generated two-dimensional code and attaching the two-dimensional code to the side of the equipment production date mark;
the operation and maintenance personnel can use the mobile phone or other scanning equipment to scan the two-dimensional code, namely, the information of the equipment can be displayed on the mobile phone or other scanning equipment, and the data of the equipment can be filled or modified;
the scanning equipment is communicated with the background database in real time, filled or modified data are uploaded to the background database, and the data of the background database are synchronized to the scanning equipment, so that the consistency and accuracy of the data are ensured;
according to technical specifications of manufacturers and industries, the inspection content is standardized;
the method comprises the steps of installing a special infrared camera for an unmanned aerial vehicle, and finding out hot spot effect, open circuit, short circuit and fracture faults of a photovoltaic module;
the flying height and the flying speed are set for the unmanned aerial vehicle, the photovoltaic square matrix is covered, a clear infrared image is obtained, and the flying height and the flying speed are calculated according to the following formula:
wherein h is the flying height, f is the focal length of the infrared camera, L is the field length of the infrared camera, G is the length of the photovoltaic module, v is the flying speed, and t is the shutter time of the infrared camera;
a reasonable flight path is planned for the unmanned aerial vehicle, so that the unmanned aerial vehicle can repeat or lose the photovoltaic array as little as possible and acquire a complete infrared image on the premise of ensuring the efficiency and the quality; the flight path is planned according to the following algorithm:
Using a dynamic programming algorithm to treat all the photovoltaic matrixes as a directed graph, wherein each node represents one photovoltaic matrix, each side represents the time of flight or distance required from one photovoltaic matrix to another, then using a shortest path algorithm to calculate an optimal path from a starting position, passing through all the nodes once and only once, returning to the starting position, scanning each photovoltaic matrix along the path, and also flying one circle along the long side and then one circle along the short side;
the dynamic programming algorithm is expressed as:
f(i,j)＝maxf(i-1,j),f(i-1,j-t i )+r i
where f (i, j) represents the maximum effect obtained when the first i devices are allowed to patrol, t i Represents the ith
Time of flight of the device to the start position, r i Indicating the failure discovery rate or the power generation amount of the i-th device.
7. The photovoltaic power generation core equipment operation and maintenance method based on accurate positioning as claimed in claim 6, wherein the method comprises the following steps: the optimized operation and maintenance means comprises the steps of collecting and arranging equipment inspection and maintenance data before and after implementation, wherein the data comprise inspection, maintenance times, time, personnel, cost, failure rate and power generation indexes, and the data are made into a table for comparison and analysis;
Analyzing the data by using a statistical method, calculating the equipment inspection and maintenance efficiency, cost and quality index change rate before and after implementation, and judging the implementation effect according to the positive and negative values and the size of the change rate, wherein the change rate is calculated by using the following formula:
wherein R is the rate of change, A 1 Is the value of the equipment index before implementation, A 2 Is the value of the implemented equipment index;
and summarizing the advantages and the disadvantages of the photovoltaic power station equipment positioning management according to the analysis result, and proposing improvement and optimization.
8. A system employing the precisely positioned photovoltaic power core device operation and maintenance method of any one of claims 1 to 7, characterized in that: the device comprises a data acquisition module, a device positioning module, a device inspection module, a device identification module, a device evaluation module and a data analysis module; the data acquisition module is used for acquiring field information, equipment information and meteorological information data of the mountain photovoltaic power station and transmitting the data to the background database;
the equipment positioning module is used for determining the installation position and direction of each equipment by utilizing a double satellite positioning technology and a map APP navigation technology according to the data provided by the data acquisition module, and marking and displaying the installation position and direction on a map;
The equipment inspection module is used for carrying out visual inspection on each equipment by utilizing an unmanned aerial vehicle aerial photographing technology and a two-dimensional code identification technology according to the data provided by the equipment positioning module, and displaying the information and the state of the equipment on a mobile phone or other scanning equipment;
the equipment identification module is used for intelligently identifying each equipment by utilizing an IV intelligent scanning technology and an infrared imaging technology according to the data provided by the equipment inspection module, judging whether the equipment has faults or anomalies, and giving corresponding prompts and suggestions;
the equipment evaluation module is used for scientifically evaluating each equipment by utilizing a statistical method and a dynamic planning algorithm according to the data provided by the equipment identification module, calculating the running performance, the power generation efficiency and the economic benefit index of the equipment, and giving corresponding scores and ranks;
the data analysis module is used for analyzing and evaluating the effect of equipment positioning management of the mountain photovoltaic power station by utilizing data mining and visualization technology according to the data provided by each module, and giving corresponding reports and suggestions.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 7 when the computer program is executed.
10. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program implementing the steps of the method of any of claims 1 to 7 when executed by a processor.
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