CN112286914A - Icing galloping early warning system and method based on microclimate online data of power transmission line - Google Patents
Icing galloping early warning system and method based on microclimate online data of power transmission line Download PDFInfo
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Abstract
The invention relates to an ice-coating galloping early warning system and method based on microclimate online data of a power transmission line, wherein the system comprises the following components: the meteorological data acquisition layer is used for acquiring original meteorological data of the microclimate online observation of the power transmission line and transmitting the original meteorological data to the meteorological data processing layer; the meteorological data processing layer is used for carrying out dirty data inspection and cleaning treatment on the original meteorological data to obtain clean meteorological data and transmitting the clean meteorological data to the data storage layer; the data storage layer is used for storing clean meteorological data and power transmission line operation experience data; and the early warning treatment layer for the icing galloping of the power transmission line is used for reading clean meteorological data and power transmission line operation experience data in the data storage layer, judging the early warning level of the icing galloping of the power transmission line and issuing early warning information of the icing galloping. The invention can detect and clean the meteorological data missing value and the meteorological data abnormal value, realize the early warning function of the icing galloping disaster weather, and effectively improve the safe operation of the transmission line equipment.
Description
Technical Field
The invention belongs to the technical field of power transmission lines, and particularly relates to an icing galloping early warning system and method based on microclimate online data of the power transmission lines.
Background
With the rapid development of national economy and the continuous improvement of the living standard of people, the scale of the national power grid keeps high-strength growth in recent years. People have more and more requirements on electric power, and the safe and stable operation of an electric power system is directly related to the development of national economy and the life of people. However, power transmission line accidents caused by natural disasters such as rain, snow, freezing and the like occur sometimes, and severe consequences caused by serious natural disasters cannot be ignored. In recent years, extreme severe meteorological conditions show a frequent trend, rain, snow and ice are frequent in weather, so that icing overload of power transmission equipment is extremely serious, galloping accidents and disasters of a power transmission line are frequent, and great threats are brought to safe and stable operation of a power grid.
In order to solve the problem of icing and waving of the power transmission line caused by the weather of the rain, snow and ice disasters, the power department of China also actively searches for effective methods for carrying out weather monitoring and disaster early warning on the weather disasters. At present, the adopted measures are mainly to install a microclimate online monitoring device on an overhead transmission line, monitor the surrounding meteorological change condition of the line in real time and try to perform early warning on disaster weather. However, due to the influence of power failure, faults, and equipment performance factors that may occur in the monitoring process of the on-line microclimate monitoring device for power transmission lines, and the emergency of the harsh environment around the device, the abnormal values (also called dirty data) such as missing, abnormal and the like of the monitored meteorological data are easily caused. In the prior art in the power field, the technical means for detecting and processing such dirty data is not mature, so that the unprocessed original meteorological data has a large deviation from the actual data, adverse effects are generated on the statistics, analysis, mining, diagnosis and other works of the later-stage meteorological data, and the timeliness and the accuracy of meteorological disaster early warning are also affected. Therefore, how to clean dirty data in the microclimate online data of the power transmission line and perform disaster early warning is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides an ice-coating galloping early warning system and method based on the microclimate online data of the power transmission line, can effectively clean dirty data in the microclimate online data of the power transmission line, and can carry out data analysis and diagnosis by using the cleaned clean data, thereby realizing the early warning function on the ice-coating galloping disaster weather.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
an icing galloping early warning system based on microclimate online data of a power transmission line comprises a meteorological data acquisition layer, a meteorological data processing layer, a meteorological data storage layer and a power transmission line icing galloping early warning disposal layer;
the meteorological data acquisition layer is used for acquiring original meteorological data of the microclimate online observation of the power transmission line and transmitting the original meteorological data to the meteorological data processing layer;
the meteorological data processing layer is used for carrying out dirty data inspection and cleaning treatment on the original meteorological data to obtain clean meteorological data and transmitting the clean meteorological data to the data storage layer;
the data storage layer is used for storing clean meteorological data and power transmission line operation experience data;
and the early warning treatment layer for the icing galloping of the power transmission line is used for reading clean meteorological data and power transmission line operation experience data in the data storage layer, judging the early warning level of the icing galloping of the power transmission line and issuing early warning information of the icing galloping.
Further, the meteorological data includes at least one of air temperature, wire temperature, air pressure, relative humidity, water vapor pressure, wind speed, wind direction, and precipitation; the power transmission line operation experience data comprises at least one of power transmission line historical icing galloping recording elements, line trend elements, microclimate monitoring devices and power transmission line position elements.
And, the meteorological data processing layer includes a meteorological data missing value inspection and cleaning processing module and a meteorological data abnormal value inspection and cleaning processing module, the dirty data includes meteorological data missing values and meteorological data abnormal values, the meteorological data missing value inspection and cleaning processing module inspects and cleans the meteorological data missing values, and the meteorological data abnormal value inspection and cleaning processing module inspects and cleans the meteorological data abnormal values.
Moreover, the meteorological data outlier test comprises at least one of a climatological boundary test, an internal consistency test, a temporal consistency test, and a spatial consistency test; the climatological boundary inspection means whether the observed meteorological data is within the climatological boundary range; the internal consistency check refers to the check whether the relation between meteorological element records observed at the same time conforms to a certain rule or not; the time consistency check refers to checking whether the change of the meteorological record has a specific rule within a certain time range; the spatial conformance test refers to a check whether the weather recording changes are consistent with the spatial characteristics of the monitored area.
The electric transmission line icing galloping early warning processing layer comprises an electric transmission line icing galloping judging module and an electric transmission line icing galloping warning processing module;
the power transmission line icing galloping judging module is used for reading meteorological data and operation data in the data storage layer and judging the early warning level of the power transmission line icing galloping according to a set rule;
and the power transmission line icing galloping alarm processing module is used for reading the judgment result in the power transmission line icing galloping judgment module and issuing icing galloping alarm information according to the judgment result.
And the electric transmission line icing galloping early warning disposal layer further comprises an electric transmission line icing type judgment module, the electric transmission line icing type judgment module classifies icing according to different weather types, and the icing types are divided into rime icing, wet snow icing and dry snow icing.
An early warning method of an ice-coating galloping early warning system based on microclimate online data of a power transmission line comprises the following steps:
step 1, a meteorological data acquisition layer acquires original meteorological data of the microclimate online observation of the power transmission line and transmits the original meteorological data to a meteorological data layer;
step 2, the meteorological data processing layer carries out dirty data inspection and cleaning treatment on the original meteorological data acquired by the meteorological data acquisition layer, and transmits the cleaned clean meteorological data to the data storage layer;
step 3, the data storage layer stores the received clean meteorological data;
and 4, reading meteorological data and operation data in the data storage layer by the early warning treatment layer of the icing galloping of the power transmission line, judging the early warning level of the icing galloping of the power transmission line and issuing early warning information of the icing galloping.
The step 2 cleaning method includes: the method comprises the following steps of carrying out data processing correction on dirty data checked and screened from original meteorological data, and replacing missing and abnormal numerical values with correct numerical values, wherein the processing process comprises the following steps:
setting a meteorological data set of meteorological elements in a certain time interval as { X1,…,Xa,Xb,Xc,…,XnThe corresponding time instants are set as t1,…,ta,tb,tc,…,tnIn which XbIs tbMissing values or abnormal values corresponding to the time;
if with XbNear previous time taCorresponding data XaAnd a later time tcCorresponding data XcIf it is not a missing or abnormal value, XbThe cleaning filling calculation formula is as follows:
if with XbNear previous time taCorresponding data XaAnd a later time tcCorresponding data XcIs a missing or abnormal value, XbThe cleaning filling calculation formula is as follows:
and the method for judging the early warning level of the icing galloping of the power transmission line in the step 4 comprises the following steps:
the method comprises the steps of reading clean meteorological data and transmission line operation experience data from a data storage layer, and establishing a meteorological element and operation experience element early warning data matrix related to an icing risk analysis model;
secondly, judging whether the humidity condition meets the basic condition for the formation of the ice coating galloping of the power transmission line, and if the humidity condition is not met, issuing an ice coating early warning level as a zero level; if the humidity condition is met, entering the next judgment;
thirdly, judging whether the temperature condition meets the basic condition for forming the ice coating galloping of the power transmission line, and if the temperature condition is not met, issuing an ice coating early warning level as a zero level; if the temperature condition is met, entering the next judgment;
fourthly, whether the wind speed condition is favorable for collision acquisition of the wire on the supercooled water drops is judged, if the wind speed is 0m/s and V is less than 3m/s, the capture rate of the wire on the supercooled water drops is judged to be small, the icing quality of the wire is low, the stage of issuing the icing early warning is one stage, if the wind speed is more than or equal to 25m/s and more than or equal to 3m/s, the included angle between the wind direction and the power transmission line is more than or equal to 90 degrees and more than or equal to 45 degrees, the capture rate of the wire on the supercooled water drops is judged to be large, the icing quality of;
fifthly, whether the duration of the humidity condition, the temperature condition and the wind speed condition is beneficial to aggravation of conductor icing is checked, if the duration is longer than or equal to 5 hours, the fact that the conductor icing is accumulated and increased is judged, and the warning level of issuing icing is three levels.
Further, the step 4 is followed by a step of classifying the ice coating:
when rainfall or fog weather exists, the air temperature T1 is less than or equal to minus 5 ℃, the ice coating is classified as rime, and the air temperature T1 is between minus 5 ℃ and 0 ℃, the ice coating is classified as rime;
when rainfall does not exist but snowfall weather exists, the air temperature T1 is near 0 ℃, the air temperature is classified as rime ice, the air temperature T1 is greater than 0 ℃, the air temperature is wet snow ice, the air temperature is less than or equal to 0 ℃, and the air temperature is dry snow ice.
The invention has the advantages and positive effects that:
1. the invention can effectively clean dirty data in the original meteorological data observed by the micrometeorology on-line monitoring device of the power transmission line by detecting and cleaning the meteorological data missing value and the meteorological data abnormal value through the meteorological data processing layer, solves the problem that the dirty data has adverse influence on the later-stage meteorological data statistics, analysis, mining, diagnosis and other works, and realizes the early warning function on the icing galloping disaster weather through the early warning processing layer of the power transmission line.
2. According to the invention, the early warning level of the icing galloping of the power transmission line is obtained and warning information is given out by analyzing and diagnosing the meteorological data and the operation data, so that an electric power department can take relevant emergency measures in advance aiming at disaster weather, and the safe operation of the power transmission line equipment is effectively promoted.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a flow chart of the pre-warning of icing galloping in accordance with the present invention;
fig. 3 is a flowchart of the ice coating type determination according to the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings.
An icing galloping early warning system based on microclimate online data of a power transmission line is shown in figure 1 and comprises a meteorological data acquisition layer, a meteorological data processing layer, a meteorological data storage layer and a power transmission line icing galloping early warning treatment layer. The following describes each part of the system:
(1) the meteorological data acquisition layer is used for acquiring original meteorological data observed in the electric transmission line microclimate online monitoring device. The original meteorological data mainly comprises air temperature, wire temperature, air pressure, relative humidity, water vapor pressure, wind speed, wind direction, precipitation and the like.
(2) And the meteorological data processing layer is used for carrying out dirty data inspection and cleaning treatment on the original meteorological data acquired by the meteorological data acquisition layer.
Dirty data to be processed in the original meteorological data includes both missing values of meteorological data and abnormal values of meteorological data.
The cleaning treatment is to carry out data processing correction on the dirty data checked and screened from the original meteorological data in the meteorological data acquisition layer through a certain cleaning rule, and replace missing and abnormal numerical values with correct and reasonable numerical values.
Missing values of meteorological data refer to the fact that the value of some attribute or attributes in the raw meteorological data is incomplete.
Meteorological data outliers refer to raw meteorological data in which the value of an attribute or attributes is anomalous, including data values that exceed climatological limits, data values that are inconsistent with the interior, data values that are inconsistent with time, and data values that are inconsistent with space.
The meteorological data processing layer comprises a meteorological data missing value checking and cleaning processing module and a meteorological data abnormal value checking and cleaning processing module. Wherein:
the meteorological data missing value inspection and cleaning processing module is used for carrying out meteorological data missing value inspection and inspecting whether the value of one or some attributes in the original meteorological data is complete or not and carrying out cleaning processing.
The meteorological data abnormal value inspection and cleaning processing module comprises a climatology limit inspection and cleaning process, an internal consistency inspection and cleaning process, a time consistency inspection and cleaning process and a space consistency inspection and cleaning process.
And (3) checking the climatological boundary: typically, the observed meteorological data should be within climatological limits. However, due to the unstable performance of the microclimate online monitoring device, abnormal conditions that the monitored data exceeds the climatology limit may occur sometimes, for example, the limit range of the air temperature in China is generally-50-50 ℃ from the climatology perspective, but the condition that the air temperature data at a certain moment monitored by the microclimate online monitoring device is 70 ℃ is not possible to occur and obviously exceeds the limit range of the climatology limit, and at this time, the climatology limit inspection and processing module judges that the air temperature data is an abnormal value. The climate limit range is defined as a table, when the monitoring data of the microclimate online monitoring device exceeds the climate limit range, the climate limit inspection and processing module judges that the data is an abnormal value, and cleaning processing is carried out.
TABLE 1 climatological limits allowable Range
| Serial number | Meteorological element | Allowable range |
| 1 | Air pressure | 870-1100hPa |
| 2 | Air temperature | -50-50℃ |
| 3 | Relative humidity | 0-100％ |
| 4 | Pressure of water vapour | 0-55hPa |
| 5 | Wind speed | 0-75m/s |
| 6 | Wind direction | 0-360° |
| 7 | Precipitation per minute | 0-40mm |
| 8 | Hourly precipitation | 0-600mm |
Internal consistency check: the relation between the meteorological element records observed at the same time must be checked according to a certain rule. For example, the consistency of the air temperature and precipitation, generally, if precipitation occurs, the solar radiation received by the ground is reduced, and the ground air temperature is also reduced because a large amount of heat is consumed by the evaporation of water on the ground surface and soil. If the temperature monitored by the micrometeorological online monitoring device at a certain moment is found to be 3 ℃, the precipitation at the moment is 20mm, the temperature at the previous moment is 0 ℃, and the precipitation at the moment is 0mm, the temperature data at the moment can be judged to be an abnormal value, and data cleaning can be carried out.
And (3) time consistency check: and checking whether the weather record changes within a certain time range according to a specific rule. For example, in 12 months in winter, the temperature is 30 ℃ at a certain moment, the requirement of time consistency is not met, the meteorological data is judged to be an abnormal value, and cleaning treatment is carried out.
And (3) checking the spatial consistency: checking whether the meteorological record changes are consistent with the spatial characteristics of the monitored area. For example, the temperature data observed in the third-generation region is-8 ℃, but the third-generation region belongs to a tropical marine monsoon climate region, the temperature is not lower than 0 ℃, the requirement of space consistency is not met, the meteorological data is judged to be an abnormal value, and cleaning treatment is carried out.
Cleaning treatment of the missing value and the abnormal value:
setting a meteorological data set of a meteorological element in a certain time interval as { X1,…,Xa,Xb,Xc,…,XnThe corresponding time instants are set as t1,…,ta,tb,tc,…,tnIn which X isbIs tbMissing values or abnormal values corresponding to the time.
If with XbNear previous time taCorresponding data XaAnd a later time tcCorresponding data XcIf it is not a missing or abnormal value, XbThe cleaning filling calculation formula is as follows:
if with XbNear previous time taCorresponding data XaAnd a later time tcCorresponding data XcIs a missing or abnormal value, XbThe cleaning filling calculation formula is as follows:
and storing the cleaned clean meteorological data into a target database in a meteorological data storage module of the data storage layer to finish the cleaning treatment and storage of the original meteorological data resources.
(3) The data storage layer is used for storing meteorological data and operation data. The stored meteorological data are clean meteorological data which are output after the original meteorological data are cleaned in a meteorological data processing layer, and the meteorological data comprise meteorological elements such as relative humidity, precipitation, air temperature, air speed and wind direction; the stored operation data is transmission line operation experience data, and comprises transmission line historical icing galloping recording elements, line trend elements, microclimate monitoring devices, transmission line position elements and the like.
(4) Layer is dealt with in early warning of transmission line icing galloping: setting threshold range intervals of all key elements at different early warning levels according to basic conditions generated by the icing galloping of the power transmission line, including key factors such as humidity, temperature, wind speed, wind direction and line trend, analyzing and judging whether all the weather elements are in the threshold ranges at different early warning levels by reading clean weather data after cleaning, finally issuing early warning and giving warning information according to judgment results. After the icing early warning is issued, the icing type classification module of the power transmission line classifies the icing according to different weather types, and the icing is referred to a power department, so that corresponding treatment measures are convenient to take.
The early warning and processing layer for the ice coating galloping of the power transmission line comprises a judging module for the ice coating galloping of the power transmission line, a warning and processing module for the ice coating galloping of the power transmission line and a judging module for the ice coating type of the power transmission line. Wherein:
and the power transmission line icing galloping judgment module is used for reading meteorological data and operation data in the data storage layer and judging the early warning level of the power transmission line icing galloping according to a set rule.
In this embodiment, the power transmission line icing galloping early warning level is divided into 4 early warning levels, namely a zero level, a first level, a second level and a third level, and the different early warning levels represent the following meanings:
the zero-level early warning indicates that the power transmission line cannot generate icing galloping;
the first-level early warning represents that 'slight icing of the power transmission line is possible';
the secondary early warning indicates that the possibility of the icing galloping of the power transmission line is high;
the three-stage early warning represents that the power transmission line has the ice coating galloping.
And the power transmission line icing galloping alarm processing module is used for reading the judgment result in the power transmission line icing galloping judgment module and issuing icing galloping alarm information according to the judgment result.
The judgment result in the judging module for the icing waving of the power transmission line is the following alarm information according to different early warning levels:
the zero-level early warning suggests normal monitoring without taking relevant measures;
the first-level early warning suggestion strengthens the monitoring;
the secondary early warning suggestion is closely monitored, related emergency personnel are arranged to make deicing preparation work, and related deicing equipment and devices can be enabled at any time;
and the third-level early warning suggestion arranges related emergency personnel to arrive at the site, and carries out deicing, ice melting and emergency repair work in due time according to the ice coating growth condition.
And the ice coating type judging module of the power transmission line is used for judging the ice coating type according to the meteorological data and the set rule. The ice coating types include: rime ice, wet ice, and dry ice.
Based on the ice coating galloping early warning system based on the microclimate online data of the power transmission line, the invention also provides an ice coating galloping early warning method based on the microclimate online data of the power transmission line, which comprises the following steps:
step 1, a meteorological data acquisition layer acquires original meteorological data observed by the electric transmission line micrometeorology on-line monitoring device and transmits the original meteorological data to a meteorological data layer.
And 2, the meteorological data processing layer performs dirty data inspection and cleaning treatment on the original meteorological data acquired by the meteorological data acquisition layer and transmits the cleaned clean meteorological data to the data storage layer.
And 3, storing the received clean meteorological data by the data storage layer.
And 4, reading meteorological data and operation data in the data storage layer by the early warning treatment layer of the icing galloping of the power transmission line, judging the early warning level of the icing galloping of the power transmission line, and issuing early warning information of the icing galloping.
An icing galloping early warning process;
as shown in fig. 2, the specific implementation method of this step includes the following steps:
(1) the method comprises the steps of reading cleaned meteorological data which are observed by a micrometeorological on-line monitoring device in real time from a meteorological data storage module in a data storage layer, wherein the meteorological data comprise meteorological elements such as relative humidity, precipitation, air temperature, air speed and wind direction, and the power transmission line operation experience data read from an operation experience storage module in the data storage layer comprise power transmission line historical icing galloping recording elements, line trend elements, micrometeorological monitoring devices and power transmission line position elements. And then establishing a meteorological element and operation experience element early warning data matrix related to the icing risk analysis model.
(2) And judging whether the humidity condition meets the basic condition for forming the ice-coating galloping of the power transmission line, namely the precipitation P is greater than 0 or the relative humidity H is greater than or equal to 75%. If the humidity condition is not met, issuing an icing early warning level as zero level, namely the power transmission line cannot generate icing galloping, and giving warning information of 'normal monitoring without taking relevant measures'; and if the humidity condition is met, the next judgment is carried out.
(3) Judging whether the temperature condition meets the basic conditions for forming the ice coating galloping of the power transmission line, namely the air temperature T1 is less than or equal to 1 ℃ and the lead temperature T2 is less than or equal to 1 ℃, if the temperature condition is not met, issuing the ice coating early warning level to be zero level, namely the power transmission line does not generate the ice coating galloping, and giving out the warning information of 'normal monitoring without taking related measures'; and if the temperature condition is met, the next judgment is carried out.
(4) Judging whether the wind speed condition is favorable for obtaining the supercooled water drops by the wire in a collision mode, if the wind speed is 0m/s < V <3m/s, judging that the capture rate of the supercooled water drops by the wire is low, the icing quality of the wire is low, issuing an icing early warning level to be one level, namely that slight icing possibly occurs on the power transmission line, and giving out alarm information for strengthening monitoring. If V is larger than or equal to 25m/s and larger than or equal to 3m/s and the included angle between the wind direction and the power transmission line is larger than or equal to 45 degrees, the capture rate of the supercooled water drops by the lead is judged to be larger, the icing quality of the lead is larger, the stage of issuing the icing early warning is two, namely the possibility of icing galloping of the power transmission line is larger, and the warning information of ' close monitoring ', arranging relevant emergency personnel to make deicing preparation work and ensuring that related equipment and devices for deicing can be started at any time ' is given out.
(5) And (3) checking whether the duration time of the humidity condition, the temperature condition and the wind speed condition is favorable for aggravation of conductor icing, if the duration time is more than or equal to 5 hours, judging that the conductor icing is accumulated and increased, issuing an icing early warning level to be three levels, namely that the power transmission line has icing galloping, and giving warning information of 'arranging relevant emergency personnel to arrive at the site and carrying out deicing operation work in due time according to the icing increasing condition'.
And 5, after the icing early warning is issued, the power transmission line icing type classification module classifies the icing according to different weather types.
As shown in fig. 3, the specific implementation method of this step is:
when rainfall or fog weather exists, the air temperature T1 is less than or equal to minus 5 ℃, the ice coating is classified as rime, and the air temperature T1 is between minus 5 ℃ and 0 ℃, the ice coating is classified as rime;
when rainfall does not exist but snowfall weather exists, the air temperature T1 is near 0 ℃, the air temperature is classified as rime ice, the air temperature T1 is greater than 0 ℃, the air temperature is wet snow ice, the air temperature is less than or equal to 0 ℃, and the air temperature is dry snow ice.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (10)
1. The utility model provides an icing galloping early warning system based on little meteorological on-line data of transmission line which characterized in that: the device comprises a meteorological data acquisition layer, a meteorological data processing layer, a meteorological data storage layer and a power transmission line icing galloping early warning treatment layer;
the meteorological data acquisition layer is used for acquiring original meteorological data of the microclimate online observation of the power transmission line and transmitting the original meteorological data to the meteorological data processing layer;
the meteorological data processing layer is used for carrying out dirty data inspection and cleaning treatment on the original meteorological data to obtain clean meteorological data and transmitting the clean meteorological data to the data storage layer;
the data storage layer is used for storing clean meteorological data and power transmission line operation experience data;
and the early warning treatment layer for the icing galloping of the power transmission line is used for reading clean meteorological data and power transmission line operation experience data in the data storage layer, judging the early warning level of the icing galloping of the power transmission line and issuing early warning information of the icing galloping.
2. The icing galloping early warning system based on the microclimate online data of the power transmission line according to claim 1, characterized in that: the meteorological data comprises at least one of air temperature, wire temperature, air pressure, relative humidity, water vapor pressure, wind speed, wind direction and precipitation; the power transmission line operation experience data comprises at least one of power transmission line historical icing galloping recording elements, line trend elements, microclimate monitoring devices and power transmission line position elements.
3. The icing galloping early warning system based on the microclimate online data of the power transmission line according to claim 1, characterized in that: the meteorological data processing layer comprises a meteorological data missing value checking and cleaning processing module and a meteorological data abnormal value checking and cleaning processing module, the dirty data comprises a meteorological data missing value and a meteorological data abnormal value, the meteorological data missing value checking and cleaning processing module checks and cleans the meteorological data missing value, and the meteorological data abnormal value checking and cleaning processing module checks and cleans the meteorological data abnormal value.
4. The icing galloping early warning system based on the microclimate online data of the power transmission line according to claim 3, characterized in that: the meteorological data outlier test comprises at least one of a climatological boundary test, an internal consistency test, a time consistency test and a space consistency test; the climatological boundary inspection means whether the observed meteorological data is within the climatological boundary range; the internal consistency check refers to the check whether the relation between meteorological element records observed at the same time conforms to a certain rule or not; the time consistency check refers to checking whether the change of the meteorological record has a specific rule within a certain time range; the spatial conformance test refers to a check whether the weather recording changes are consistent with the spatial characteristics of the monitored area.
5. The icing galloping early warning system based on the microclimate online data of the power transmission line according to claim 1, characterized in that: the electric transmission line icing galloping early warning processing layer comprises an electric transmission line icing galloping judgment module and an electric transmission line icing galloping warning processing module;
the power transmission line icing galloping judging module is used for reading meteorological data and operation data in the data storage layer and judging the early warning level of the power transmission line icing galloping according to a set rule;
and the power transmission line icing galloping alarm processing module is used for reading the judgment result in the power transmission line icing galloping judgment module and issuing icing galloping alarm information according to the judgment result.
6. The icing galloping early warning system based on the microclimate online data of the power transmission line according to any one of claims 1 to 5, characterized in that: the electric transmission line icing galloping early warning disposal layer further comprises an electric transmission line icing type judging module, the electric transmission line icing type judging module classifies icing according to different weather types, and the icing types are divided into rime icing, snow icing, wet snow icing and dry snow icing.
7. An early warning method of an ice-coating galloping early warning system based on microclimate online data of a power transmission line is characterized by comprising the following steps:
step 1, a meteorological data acquisition layer acquires original meteorological data of the microclimate online observation of the power transmission line and transmits the original meteorological data to a meteorological data layer;
step 2, the meteorological data processing layer carries out dirty data inspection and cleaning treatment on the original meteorological data acquired by the meteorological data acquisition layer, and transmits the cleaned clean meteorological data to the data storage layer;
step 3, the data storage layer stores the received clean meteorological data;
and 4, reading meteorological data and operation data in the data storage layer by the early warning treatment layer of the icing galloping of the power transmission line, judging the early warning level of the icing galloping of the power transmission line and issuing early warning information of the icing galloping.
8. The early warning method of the ice-coating galloping early warning system based on the microclimate online data of the power transmission line according to claim 7, characterized in that: the cleaning treatment method in the step 2 comprises the following steps: the method comprises the following steps of carrying out data processing correction on dirty data checked and screened from original meteorological data, and replacing missing and abnormal numerical values with correct numerical values, wherein the processing process comprises the following steps:
setting a meteorological data set of meteorological elements in a certain time interval as { X1,…,Xa,Xb,Xc,…,XnThe corresponding time instants are set as t1,…,ta,tb,tc,…,tnIn which XbIs tbMissing values or abnormal values corresponding to the time;
if with XbNear previous time taCorresponding data XaAnd a later time tcCorresponding data XcIf it is not a missing or abnormal value, XbThe cleaning filling calculation formula is as follows:
if with XbNear previous time taCorresponding data XaAnd a later time tcCorresponding data XcIs a missing or abnormal value, XbThe cleaning filling calculation formula is as follows:
9. the early warning method of the ice-coating galloping early warning system based on the microclimate online data of the power transmission line according to claim 7, characterized in that: the method for judging the early warning level of the icing galloping of the power transmission line in the step 4 comprises the following steps:
the method comprises the steps of reading clean meteorological data and transmission line operation experience data from a data storage layer, and establishing a meteorological element and operation experience element early warning data matrix related to an icing risk analysis model;
secondly, judging whether the humidity condition meets the basic condition for the formation of the ice coating galloping of the power transmission line, and if the humidity condition is not met, issuing an ice coating early warning level as a zero level; if the humidity condition is met, entering the next judgment;
thirdly, judging whether the temperature condition meets the basic condition for forming the ice coating galloping of the power transmission line, and if the temperature condition is not met, issuing an ice coating early warning level as a zero level; if the temperature condition is met, entering the next judgment;
fourthly, whether the wind speed condition is favorable for collision acquisition of the wire on the supercooled water drops is judged, if the wind speed is 0m/s and V is less than 3m/s, the capture rate of the wire on the supercooled water drops is judged to be small, the icing quality of the wire is low, the stage of issuing the icing early warning is one stage, if the wind speed is more than or equal to 25m/s and more than or equal to 3m/s, the included angle between the wind direction and the power transmission line is more than or equal to 90 degrees and more than or equal to 45 degrees, the capture rate of the wire on the supercooled water drops is judged to be large, the icing quality of;
fifthly, whether the duration of the humidity condition, the temperature condition and the wind speed condition is beneficial to aggravation of conductor icing is checked, if the duration is longer than or equal to 5 hours, the fact that the conductor icing is accumulated and increased is judged, and the warning level of issuing icing is three levels.
10. The early warning method of the early warning system of icing galloping based on the microclimate online data of the power transmission line according to any one of claims 7 to 9, characterized in that: the step 4 is followed by a step of classifying the ice coating:
when rainfall or fog weather exists, the air temperature T1 is less than or equal to minus 5 ℃, the ice coating is classified as rime, and the air temperature T1 is between minus 5 ℃ and 0 ℃, the ice coating is classified as rime;
when rainfall does not exist but snowfall weather exists, the air temperature T1 is near 0 ℃, the air temperature is classified as rime ice, the air temperature T1 is greater than 0 ℃, the air temperature is wet snow ice, the air temperature is less than or equal to 0 ℃, and the air temperature is dry snow ice.
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