CN114897852A - Electric field metering and collecting method and system - Google Patents
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Abstract
The invention discloses an electric field metering and collecting method, which comprises the following steps: monitoring equipment is arranged at each position in the electric field to collect test pictures of the electric meters in each part of the electric field; carrying out image preprocessing on the obtained monitoring equipment real-time recording ammeter image information to obtain a characteristic image; receiving and identifying the characteristic image by the electric field data terminal, and detecting data symbols and pattern characteristics in the characteristic image; according to the invention, the abnormal phenomenon in the electric field can be monitored in real time by using the metering and collecting system, the abnormal area is rapidly positioned, an abnormal warning is sent out or the circuit is directly cut off, meanwhile, the electric network operation data in the abnormal state is stored, and the abnormal data is reserved; in addition, historical retained data is applied, data collected at the position are analyzed and compared, the abnormal reason is directly determined, the abnormal analysis speed is improved, the collection system can rapidly locate the fault point and judge the range, and rush-repair personnel can rapidly respond, so that the fault rush-repair time is shortened.
Description
Technical Field
The invention relates to the technical field of measurement and acquisition, in particular to an electric field measurement and acquisition method and system.
Background
The power plant is a power plant which converts some form of original energy into electric energy for fixed facilities or transportation power, such as a thermal power plant, a hydraulic power plant, a steam plant, a diesel oil plant or a nuclear power plant, wherein thermal power generation is realized by using heat energy obtained by burning fuel, hydraulic power generation is realized by guiding river water, lake water or river water at a high position to a downstream position through flow guide to form a fall to push a hydraulic turbine to rotate to drive a generator to generate power, nuclear power generation is realized by slowly generating steam by using the heat energy released by nuclear fuel in a nuclear reactor and then driving the generator to rotate to generate power, a large blade constructed on the top of a tower is blown by wind power to drive the generator to generate power, and a power generation field consisting of a plurality of wind power generators, a dozen or even dozens of wind power generators is called as a wind power fission power generation field.
Electric field condition can only observe the detection record through the manual work in traditional electric field, reach measurement monitoring in the electric field and detect, or adopt control system, can't accomplish complete supervisory control, and data transmission analysis, make the security in the electric field difficult to guarantee, can't be rapid to unusual position make a response, can't accomplish to detect the electric field in real time, lead to electric field trouble staff to react slower, the unusual trouble that brings will cause bigger damage, we propose an electric field measurement collection method and system for this reason, solve above problem.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an electric field measurement acquisition method and system.
In order to achieve the purpose, the invention adopts the following technical scheme:
an electric field measurement and collection method comprises the following steps:
monitoring equipment is arranged at each position in the electric field to collect test pictures of the electric meters in each part of the electric field;
carrying out image preprocessing on the obtained monitoring equipment real-time recording ammeter image information to obtain a characteristic image;
receiving and identifying the characteristic image by the electric field data terminal, and detecting data symbols and pattern characteristics in the characteristic image;
comparing the detection data information with the database sample parameters according to the detection result;
according to the detection result and the data parameter comparison result, immediately judging the working condition in the electric field, and positioning and reminding the abnormal position;
summarizing data information, detection characteristic information and analysis calculation data in each link;
and generating a report form of the summarized data in a database, and displaying the report form on the terminal equipment.
Preferably, monitoring equipment is arranged at each position in the electric field to collect test pictures of electric meters in each part of the electric field, and the steps are as follows:
processing original metering data through system application requirements, wherein the processing comprises analysis, calculation, summarization, classification, management, storage, query and the like, and providing estimated parameters of the metering data of the task;
according to the original data processing result, the system is responsible for compiling the acquisition task, managing and executing the acquisition task, checking and evaluating the completion condition and the execution effect of the measurement acquisition task;
and controlling the monitoring peripheral probes at the relevant positions according to the compiled acquisition tasks, and transmitting the electric meter information at the positions.
Preferably, the image preprocessing is performed on the obtained monitoring equipment real-time recording ammeter image information, and the steps are as follows:
graying the acquired monitoring image, so that each pixel of the gray image only needs one byte to store a gray value, and the gray range is 0-255;
processing the acquired image through geometric transformations such as translation, transposition, mirror image, rotation, scaling and the like, and correcting errors of image acquisition and random errors of instrument positions;
calculating according to the transformation relation by using a gray interpolation algorithm, and mapping the pixels of the output image to non-integer coordinates of the input image;
the image is regarded as a two-dimensional signal by a frequency domain method, and the signal enhancement based on two-dimensional Fourier transform is carried out on the two-dimensional signal.
Filtering out high frequency components representing image edges, noise or steep changes, and only leaving low frequency components with gentle changes;
then the frequency domain is converted back to the time domain, namely, the image is subjected to smoothing treatment; in contrast, if the low frequency component is filtered out and only the high frequency component remains, the image is sharpened.
Preferably, the data symbol and pattern feature in the feature image are detected by the following steps:
standardizing the color space of the input image by using a Gamma correction method;
gradient capture contour information of each pixel of the image is calculated, and the interference of illumination is weakened;
dividing the image into small units, and counting a gradient histogram of each small unit;
forming each small unit into a block to obtain a characteristic block of the block;
and connecting the obtained feature blocks in series to obtain feature data which can be used for data extraction of the image.
The adopted electric meter and the high-precision electric meter can directly measure bidirectional active electric energy, reactive electric energy and four-quadrant reactive electric energy in multiple time periods and store data of the bidirectional active electric energy, reactive electric energy and four-quadrant reactive electric energy, the four-quadrant reactive electric energy can be combined and accumulated at will and displayed, the electric meter can be programmed so as to correspond to different primary side current and voltage parameters, the electric meter has a load curve recording function and at least provides two-intersection independent load curves, and the content recorded by a first set of load curve 15 min bottom codes comprises positive and reverse active total electric quantity, positive and reverse reactive electric quantity and four-quadrant reactive total electric quantity; voltage (A, B, C), current (A, B, C), active and reactive power, the first set of 15 minute base load curve storage time is at least 3 months; the second set of load curves records a forward and reverse active incremental load curve for 1 minute, and the data storage time is not less than 25 days; load curve information;
the wind power plant upgrades and reforms the 220kV and 35kV gateway table, upgrades the electric energy acquisition terminal and accesses and debugs a TMR trading system; and after the system is transformed, the power station has the technical service of uploading data mirror image interfaces. And will schedule one, two planes of communication access.
An electric field metrology collection system comprising:
a data acquisition unit: the electric meter monitoring system is used for collecting electric meter test pictures of all parts of an electric field through monitoring equipment arranged in each part of the electric field;
an image preprocessing unit: the monitoring equipment is used for recording the ammeter image information in real time and carrying out image preprocessing on the obtained ammeter image information to obtain a characteristic image;
an identification detection unit: the electric field data terminal is used for receiving and identifying the characteristic image and detecting the data symbol and the pattern characteristic in the characteristic image;
a data comparison unit: the database is used for comparing the detection data information with the database sample parameters according to the detection result;
a data judgment unit: the device is used for immediately judging the working condition in the electric field according to the detection result and the data parameter comparison result and carrying out positioning reminding on the abnormal part;
an information summarizing unit: the data processing system is used for summarizing data information, detection characteristic information and analysis calculation data in each link;
a report generation unit: generating a report form of the summarized data, storing the report form in a database, and displaying the report form on terminal equipment;
a database: the data storage device is used for storing various data in the working process;
preferably, the report generating unit includes:
a report format editing module: used for making report form files;
a configuration file editing module: the file configuration editing device is used for editing the file configuration;
a table configuration module: for editing the table configuration file;
a report name configuration module: the system is used for editing report name configuration files and recording the file names of all reports;
a time configuration module: the time configuration file is used for editing the time configuration file and determining the time of report output;
the report automatic generation module: the automatic report generation module is used for acquiring data from the specified real-time database according to the report configuration file and synthesizing the data and the report format file into a real report.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, a metering acquisition system is used for inputting pictures of acquisition electric meters at each position in an electric field, processing and extracting input image information to obtain data information in the image, and the acquisition system is used for analyzing abnormal data parts, so that abnormal phenomena in the electric field can be monitored in real time, abnormal areas can be rapidly positioned, abnormal warnings are given or circuits are directly cut off, abnormal power grid operation data are stored, and abnormal data are retained; in addition, historical retained data is applied, data collected at the position are analyzed and compared, the abnormal reason is directly determined, the abnormal analysis speed is improved, the collection system can rapidly locate the fault point and judge the range, and rush-repair personnel can rapidly respond, so that the fault rush-repair time is shortened.
Drawings
Fig. 1 is a schematic flow chart of an electric field measurement acquisition method and system 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.
Referring to fig. 1, an electric field measurement and collection method includes the following steps:
s1: the method comprises the following steps of collecting test pictures of electric meters in all parts of an electric field by arranging monitoring equipment in the electric field, wherein the test pictures comprise:
processing original metering data through system application requirements, wherein the processing comprises analysis, calculation, summarization, classification, management, storage, query and the like, and providing estimated parameters of the metering data of the task;
according to the original data processing result, the system is responsible for compiling the acquisition task, managing and executing the acquisition task, checking and evaluating the completion condition and the execution effect of the measurement acquisition task;
controlling the monitoring peripheral probes at the relevant positions according to the compiled acquisition tasks, and transmitting the data of the ammeter information at the positions;
s2: carrying out image preprocessing on the acquired monitoring equipment real-time recording ammeter image information to obtain a characteristic image, wherein the steps are as follows:
graying the acquired monitoring image, so that each pixel of the gray image only needs one byte to store a gray value, and the gray range is 0-255;
processing the acquired image through geometric transformations such as translation, transposition, mirroring, rotation, scaling and the like, and correcting errors of image acquisition and random errors of instrument positions;
calculating according to the transformation relation by using a gray interpolation algorithm, and mapping the pixels of the output image to non-integer coordinates of the input image;
the image is regarded as a two-dimensional signal by a frequency domain method, and the signal enhancement based on two-dimensional Fourier transform is carried out on the two-dimensional signal.
Filtering out high frequency components representing image edges, noise or steep changes, and only leaving low frequency components with gentle changes;
then the frequency domain is converted back to the time domain, namely, the image is subjected to smoothing treatment; conversely, if the low-frequency components are filtered out and only the high-frequency components are left, the image is sharpened;
the principle of frequency domain enhancement is quite simple, and the key problem of the application is how to select the filtering radius threshold. The mathematical expression of filtering is as follows:
G(u,v)＝F(u,v)H(u,v)
wherein G (x, y), H (u, v), and F (u, v) are fourier transforms of G (x, y), H (x, y), and F (x, y), respectively, and commonly used high-pass filters:
a ladder high-pass filter:
s3: the electric field data terminal receives and identifies the characteristic image, and detects the data symbol and the pattern characteristic in the characteristic image, and the steps are as follows:
standardizing the color space of the input image by using a Gamma correction method;
gradient capture contour information of each pixel of the image is calculated, and the interference of illumination is weakened;
dividing the image into small units, and counting a gradient histogram of each small unit;
forming each small unit into a block to obtain a characteristic block of the block;
connecting the obtained feature blocks in series to obtain feature data of an image for data extraction;
gamma compression formula:
I(x,y)＝I(x,y) gamma
gamma 1/2;
transforming the gray level of each pixel of the image to expand the gray level range of the image;
if the gray function f (x, y) of the design image is changed into a new image function g (x, y) through a transformation function T (), that is:
g(x,y)＝T(f(x,y))
the purpose of contrast enhancement is achieved through transformation;
the gray scale transformation method is mainly divided into a linear transformation method and a piecewise linear transformation method;
linear transformation assumes the gray scale range of the source image as [ a, b ], and hopes that the gray scale range of the transformed image is expanded to [ c, d ], and linear transformation is carried out;
expressed as:
g(x,y)＝[(d-c)/(b-a)]f(x,y)+c
if the gray levels of most pixels in the image are distributed in the interval [ a, b ], and a very small gray level exceeds the interval, to improve the enhancement effect, the following steps can be performed:
s4: comparing the detection data information with the database sample parameters according to the detection result;
s5: according to the detection result and the data parameter comparison result, immediately judging the working condition in the electric field, and positioning and reminding the abnormal position;
s6: summarizing data information, detection characteristic information and analysis calculation data in each link;
s7: and generating a report form of the summarized data in a database, and displaying the report form on the terminal equipment.
An electric field metrology collection system comprising:
a data acquisition unit: the electric meter monitoring system is used for collecting electric meter test pictures of all parts of an electric field through monitoring equipment arranged in each part of the electric field;
an image preprocessing unit: the monitoring equipment is used for recording the ammeter image information in real time and carrying out image preprocessing on the obtained ammeter image information to obtain a characteristic image;
an identification detection unit: the electric field data terminal is used for receiving and identifying the characteristic image and detecting the data symbol and the pattern characteristic in the characteristic image;
a data comparison unit: the database is used for comparing the detection data information with the database sample parameters according to the detection result;
a data judgment unit: the device is used for immediately judging the working condition in the electric field according to the detection result and the data parameter comparison result and carrying out positioning reminding on the abnormal part;
an information summarizing unit: the data processing system is used for summarizing data information, detection characteristic information and analysis calculation data in each link;
a report generation unit: generating a report form of the summarized data, storing the report form in a database, and displaying the report form on terminal equipment;
the report generation unit comprises:
a report format editing module: used for making report form files;
a configuration file editing module: the file configuration editing device is used for editing the file configuration;
a table configuration module: for editing the table configuration file;
a report name configuration module: the system is used for editing report name configuration files and recording the file names of all reports;
a time configuration module: the time configuration file is used for editing the time configuration file and determining the time of report output;
the report automatic generation module: the automatic report generation module is used for acquiring data from a specified real-time database according to the report configuration file and synthesizing the data and the report format file into a real report;
a database: the data storage device is used for storing various data in the working process;
an electric field measurement data acquisition device comprising a memory having terminal-readable instructions stored therein and a processor which, when executed, implements the steps of the electric field measurement acquisition method of any one of claims 1 to 4.
A terminal-readable storage medium having terminal-readable instructions stored thereon which, when executed by a processor, implement the steps of the electric field measurement acquisition method of any one of claims 1 to 4.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. An electric field measurement and collection method is characterized by comprising the following steps:
monitoring equipment is arranged at each position in the electric field to collect test pictures of the electric meters in each part of the electric field;
carrying out image preprocessing on the obtained monitoring equipment real-time recording ammeter image information to obtain a characteristic image;
receiving and identifying the characteristic image by the electric field data terminal, and detecting data symbols and pattern characteristics in the characteristic image;
comparing the detection data information with the database sample parameters according to the detection result;
according to the detection result and the data parameter comparison result, immediately judging the working condition in the electric field, and positioning and reminding the abnormal position;
summarizing data information, detection characteristic information and analysis calculation data in each link;
and generating a report form of the summarized data in a database, and displaying the report form on the terminal equipment.
2. The electric field metering collection method according to claim 1, wherein monitoring equipment is arranged at each position in the electric field to collect electric meter test pictures of each part of the electric field, and the method comprises the following steps:
processing original metering data through system application requirements, wherein the processing comprises analysis, calculation, summarization, classification, management, storage, query and the like, and providing estimated parameters of the metering data of the task;
according to the original data processing result, the system is responsible for compiling the acquisition task, managing and executing the acquisition task, checking and evaluating the completion condition and the execution effect of the measurement acquisition task;
and controlling the monitoring peripheral probes at the relevant positions according to the compiled acquisition tasks, and transmitting the electric meter information at the positions.
3. The electric field measurement acquisition method according to claim 1, wherein the image preprocessing is performed on the acquired monitoring equipment real-time recording electric meter image information, and the steps are as follows:
graying the acquired monitoring image, so that each pixel of the gray image only needs one byte to store a gray value, and the gray range is 0-255;
processing the acquired image through geometric transformations such as translation, transposition, mirroring, rotation, scaling and the like, and correcting errors of image acquisition and random errors of instrument positions;
calculating according to the transformation relation by using a gray interpolation algorithm, and mapping the pixels of the output image to non-integer coordinates of the input image;
the image is regarded as a two-dimensional signal by a frequency domain method, and the signal enhancement based on two-dimensional Fourier transform is carried out on the two-dimensional signal.
Filtering out high frequency components representing image edges, noise or steep changes, and only leaving low frequency components with gentle changes;
then the frequency domain is converted back to the time domain, namely, the image is subjected to smoothing treatment; in contrast, if the low frequency component is filtered out and only the high frequency component remains, the image is sharpened.
4. An electric field measurement collection method according to claim 1, wherein the data symbol and pattern feature in the feature image are detected by the following steps:
standardizing the color space of the input image by using a Gamma correction method;
gradient capture contour information of each pixel of the image is calculated, and the interference of illumination is weakened;
dividing the image into small units, and counting a gradient histogram of each small unit;
forming each small unit into a block to obtain a characteristic block of the block;
and connecting the obtained feature blocks in series to obtain feature data which can be used for data extraction of the image.
5. An electric field metrology collection system, comprising:
a data acquisition unit: the electric meter monitoring system is used for collecting electric meter test pictures of all parts of an electric field through monitoring equipment arranged in each part of the electric field;
an image preprocessing unit: the monitoring equipment is used for recording the ammeter image information in real time and carrying out image preprocessing on the obtained ammeter image information to obtain a characteristic image;
an identification detection unit: the electric field data terminal is used for receiving and identifying the characteristic image and detecting the data symbol and the pattern characteristic in the characteristic image;
a data comparison unit: the database is used for comparing the detection data information with the database sample parameters according to the detection result;
a data judgment unit: the device is used for immediately judging the working condition in the electric field according to the detection result and the data parameter comparison result and carrying out positioning reminding on the abnormal part;
an information summarizing unit: the data processing system is used for summarizing data information, detection characteristic information and analysis calculation data in each link;
a report generation unit: generating a report form of the summarized data, storing the report form in a database, and displaying the report form on terminal equipment;
a database: the data storage device is used for storing various data in the working process.
6. The electric field measurement and collection system according to claim 5, wherein the report generation unit comprises:
a report format editing module: used for making report form files;
a configuration file editing module: the file configuration editing device is used for editing the file configuration;
a table configuration module: for editing the table configuration file;
a report name configuration module: the system is used for editing report name configuration files and recording the file names of all reports;
a time configuration module: the time configuration file is used for editing the time configuration file and determining the time of report output;
the report automatic generation module: the automatic report generation module is used for acquiring data from the specified real-time database according to the report configuration file and synthesizing the data and the report format file into a real report.
7. An electric field measurement data acquisition device comprising a memory having terminal-readable instructions stored therein and a processor that when executed implements the steps of the electric field measurement acquisition method of any one of claims 1 to 4.
8. A terminal-readable storage medium, characterized in that it has stored thereon terminal-readable instructions which, when executed by a processor, implement the steps of the electric field measurement acquisition method according to any one of claims 1 to 4.
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| CN202210560720.8A CN114897852A (en) | 2022-05-20 | 2022-05-20 | Electric field metering and collecting method and system |
| LU503700A LU503700B1 (en) | 2022-05-20 | 2023-03-20 | An electric field metrology acquisition method and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117096877A (en) * | 2023-10-19 | 2023-11-21 | 国网山西省电力公司营销服务中心 | Multi-view-based regional dynamic electricity-carbon data electricity analysis method and system |
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