CN111879275A - Online monitoring device and method for icing of power transmission line - Google Patents

Online monitoring device and method for icing of power transmission line Download PDF

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Publication number
CN111879275A
CN111879275A CN202010756936.2A CN202010756936A CN111879275A CN 111879275 A CN111879275 A CN 111879275A CN 202010756936 A CN202010756936 A CN 202010756936A CN 111879275 A CN111879275 A CN 111879275A
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icing
transmission line
power transmission
module
ice coating
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范松海
吴天宝
龚奕宇
刘益岑
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Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
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Electric Power Research Institute of State Grid Sichuan Electric Power Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
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Abstract

The invention discloses a device and a method for monitoring icing on line of a power transmission line, which comprises a sensor module, a power supply module, a communication module and an edge calculation module; the edge calculation module is used for acquiring sensing data and calculating in real time according to the sensing data to obtain early warning data and icing trend prediction data; the edge calculation module periodically carries out icing tension self-calibration, calculates the equivalent icing thickness of the power transmission line on site in real time according to the tension and the inclination angle of the suspension insulator string of the power transmission line, controls an information feedback strategy of the communication module, issues early warning information when the icing thickness exceeds a threshold value, and does not send a calculation result when no icing or light icing exists; meanwhile, the edge calculation module completes the prediction of the equivalent icing trend of the power transmission line according to the microclimate sensor data. The invention realizes real-time calculation and early warning, self calibration, icing trend prediction and data return control.

Description

Online monitoring device and method for icing of power transmission line
Technical Field
The invention relates to the technical field of disaster prevention and reduction of a power system, in particular to a device and a method for online monitoring of ice coating of a power transmission line.
Background
The climate in China is complex and various, the power transmission line is subjected to rain, snow and freezing weather every year, so that the power transmission line is iced, fault tripping, tower collapse disconnection and even large-range power failure are caused, 17 provinces such as Sichuan, Hunan, Hubei and the like are influenced, and the number of times of outage of the power transmission line caused by icing in recent years is counted to be 1/4 of the total number of times of outage.
The traditional ice coating observation of the power transmission line mainly takes manpower tour or standing ice observation, consumes a large amount of manpower and material resources, has high personal risk, and has the inherent defects of untimely and inaccurate observation, incapability of working at night and the like. With the development of the technology, the online monitoring application is continuously strengthened, but a reliable monitoring technology and a calculation model are lacked, and the problems of low reliability and large error exist in engineering application. In addition, most of the existing online monitoring devices only return original data of the sensor, the devices have large comprehensive power consumption due to real-time data return, the monitoring results cannot directly guide ice melting and ice resisting decisions of the power transmission line, the functions of ice coating thickness calculation, ice coating trend prediction and the like need to be realized by means of background software, and self-calibration of the monitoring results cannot be realized.
Disclosure of Invention
The invention aims to solve the technical problems that the prior art cannot realize real-time calculation and early warning of icing thickness, self calibration, icing trend prediction and high comprehensive power consumption, and aims to provide a device and a method for online monitoring of icing of a power transmission line, so as to solve the problems in the background art.
The invention is realized by the following technical scheme:
an ice coating on-line monitoring device for a power transmission line comprises a sensor module, a power supply module, a communication module and an edge calculation module;
the power module, the communication module and the sensor module are respectively connected with the edge calculation module; the power supply module is connected with the communication module;
the power supply module is used for supplying power to the sensor module, the edge calculation module and the communication module;
the sensor module is used for generating sensing data;
the edge calculation module is used for acquiring sensing data, calculating in real time according to the sensing data to obtain equivalent icing thickness, early warning data and icing trend prediction data, and executing an equivalent icing thickness self-calibration task;
the communication module is used for returning the early warning data and the icing trend prediction data and receiving the configuration of the remote control background to the edge calculation module.
The communication module can adopt 2G/3G/4G/5G public network communication, WiFi communication and satellite communication to realize data return and receive a configuration strategy of a remote control background (an internet of things management platform) to the edge computing module, and the communication mode is not limited.
Further, an online monitoring device for icing of power transmission line further comprises: an insulator string;
the sensor module includes: an insulator string icing tension sensor, an insulator string inclination angle sensor and a microclimate sensor;
the insulator string is provided with one end connected with the transmission line iron tower; the other end of the insulator string is connected with one end of an insulator string icing tension sensor and one end of an insulator string inclination angle sensor; the other ends of the insulator string ice-coating tension sensor and the insulator string inclination angle sensor are provided with one ends hung with the transmission conductors;
the microclimate sensor is connected with the edge calculation module.
Further, the on-line monitoring device for the icing of the power transmission line also comprises an on-line monitoring device shell;
the shell of the online monitoring device is used for accommodating the edge computing module, the power supply module and the communication module.
Further, the device for monitoring the icing on line of the power transmission line comprises an edge calculation module, wherein the equivalent icing thickness D of the power transmission line in the edge calculation moduleiThe real-time calculation adopts the following formula:
Figure BDA0002611871570000021
wherein, Delta F% is the overhang of the transmission lineThe percentage of increase of the tension of the insulator string before and after ice coating, alpha is the wind deflection angle of the suspension insulator string, and sigmacIs the linear density of the conductor, piTaking the density of ice as 0.9g/cm3，RcIs the wire diameter, g is the acceleration of gravity.
Further, the micro meteorological sensor is arranged at the cross arm of the power transmission tower; the microclimate sensor has the functions of monitoring wind speed, wind direction, temperature and humidity.
Further, the edge calculation module obtains an icing tension reference value when ice is not coated by periodically calculating the average value of the tension of the suspension insulator string of the power transmission line when ice is not coated, eliminates zero offset of the icing tension sensor caused by fatigue, aging and the like, realizes self calibration of equivalent ice coating thickness of the power transmission line, and the calibration strategy can be configured remotely.
Furthermore, the power module adopts a solar energy or storage battery or overhead ground wire induction energy taking mode.
The working principle of the invention is as follows: the edge calculation module regularly carries out icing tension self calibration, and calculates the equivalent icing thickness D of the power transmission line in real time on site according to the tension and the inclination angle of the suspension insulator string of the power transmission lineiAnd controlling the information feedback strategy of the communication module when the ice coating thickness DiWhen the ice coating thickness exceeds the early warning threshold value, the early warning information is issued, and when the ice coating is not formed or is light (the ice coating thickness D)iLess than 30% of the designed icing thickness), not sending the calculation result; meanwhile, the edge calculation module completes prediction of the equivalent icing trend of the power transmission line according to the temperature data, the humidity data and the wind speed data monitored by the microclimate sensor. The early warning threshold value and the early warning information format in the invention can be configured remotely.
An ice coating on-line monitoring method for a power transmission line comprises the following steps:
s1, generating sensing data by the insulator string ice-coating tension sensor and the insulator string inclination angle sensor and transmitting the sensing data to the edge calculation module;
s2, the edge calculation module calculates the equivalent icing thickness D of the power transmission line according to the sensing datai；
S3, the edge calculation module is used for calculating the equivalent icing thickness D of the power transmission lineiComparing the calculated thickness with the designed icing thickness of the monitored line section, and when the equivalent icing thickness D of the power transmission line is obtainediWhen the early warning threshold value is exceeded, releasing early warning information; when there is no ice coating or the thickness of ice coating DiWhen the thickness of the ice coating is less than 30% of the designed thickness, the calculation result is not sent; meanwhile, the edge calculation module completes prediction of the equivalent icing trend of the power transmission line according to the temperature data, the humidity data and the wind speed data monitored by the microclimate sensor.
Further, in a method for online monitoring of ice coating on a power transmission line, the sensing data in S1 includes: the percentage increase delta F of the tension of the suspension insulator string of the power transmission line before and after ice coating and the wind deflection angle alpha of the suspension insulator string;
the equivalent icing thickness D of the power transmission line in S2iThe following formula should be satisfied:
Figure BDA0002611871570000031
wherein, delta F% is the percentage increase of the pulling force before and after icing of the suspension insulator string of the power transmission line, alpha is the wind deflection angle of the suspension insulator string, and sigmacIs the linear density of the conductor, piTaking the density of ice as 0.9g/cm3，RcIs the wire diameter, g is the acceleration of gravity.
Further, in the method for on-line monitoring of ice coating on the power transmission line, the data monitored by the microclimate sensor in the step S3 specifically include temperature data, humidity data and wind speed data.
Further, in the method for online monitoring of ice coating on the power transmission line, the specific prediction rule for predicting the equivalent ice coating trend of the power transmission line in S3 is as follows:
a. when the temperature is-20-0 ℃, the humidity is more than 90%, and the wind speed is more than or equal to 1m/s, the trend prediction result is as follows: the icing is in a growing trend;
b. when the temperature is between-20 ℃ and 0 ℃, the humidity is less than or equal to 90 percent, and the wind speed is less than 1m/s, the trend prediction result is as follows: ice coating is kept stable;
c. when the temperature is 0 ℃ or less than-20 ℃, the humidity is any value and the wind speed is any value, the trend prediction result is as follows: ice coating is kept stable;
d. when the temperature value is more than 0 ℃, the humidity is an arbitrary value, and the wind speed is an arbitrary value, the trend prediction result is as follows: the icing tends to be ablated.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention improves the monitoring accuracy and timeliness. According to the monitoring data of the tension sensor and the inclination sensor of the suspension insulator string, other auxiliary monitoring parameters are not needed, the equivalent icing thickness of the power transmission line is directly calculated on site, and the calculation result is more timely.
2. The invention realizes the integration of early warning and prediction. The edge calculation module timely issues early warning information according to the ice coating thickness calculation result, and realizes prediction of equivalent ice coating trend of the power transmission line according to microclimate sensor data, so that integrated early warning and prediction of the ice coating thickness of the power transmission line are realized.
3. The invention realizes the self calibration of the monitoring result. The edge calculation module obtains an icing tension reference value when ice is not coated by periodically calculating the average value of the tension of the suspension insulator string of the power transmission line when ice is not coated, and eliminates zero point offset of the icing tension sensor caused by fatigue, aging and the like.
4. The invention reduces the power consumption of the on-line monitoring device. The edge calculation module controls data to be transmitted back according to the equivalent icing thickness calculation result of the power transmission line, and when the icing is not generated or the icing is light, the calculation result is not sent, so that the comprehensive power consumption of the online monitoring device is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a flow chart of the equivalent icing thickness calculation, early warning, prediction and self-calibration work of the power transmission line.
The names corresponding to the reference numbers in fig. 1 are: the device comprises 1-an insulator string icing tension sensor, 2-a microclimate sensor, 3-an edge calculation module, 4-a communication module, 5-a power module, 6-an online monitoring device shell, 7-an insulator string, 8-a transmission lead, 9-a transmission line iron tower and 10-an insulator string inclination angle sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
As shown in figure 1 of the drawings, in which,
an ice coating on-line monitoring device for a power transmission line comprises a sensor module, a power module 5, a communication module 4 and an edge calculation module 3;
the power module 5, the communication module 4 and the sensor module are respectively connected with the edge calculation module 3; the power module 5 is connected with the communication module 4;
the power supply module 5 is used for supplying power to the sensor module, the edge calculation module 3 and the communication module 4;
the sensor module is used for generating sensing data;
the edge calculation module 3 is used for collecting sensing data, calculating in real time according to the sensing data to obtain equivalent icing thickness, early warning data and icing trend prediction data, and executing an equivalent icing thickness self-calibration task;
the communication module 4 is used for returning the early warning data and the icing trend prediction data and receiving the configuration of the remote control background to the edge calculation module 3.
The communication module can adopt 2G/3G/4G/5G public network communication, WiFi communication and satellite communication to realize data return and receive a configuration strategy of a remote control background (an internet of things management platform) to the edge computing module, and the communication mode is not limited.
Further, an online monitoring device for icing of power transmission line further comprises: an insulator string 7;
the sensor module includes: the device comprises an insulator string icing tension sensor 1, an insulator string inclination angle sensor 10 and a microclimate sensor 2;
the insulator string 7 is provided with one end connected with the transmission line iron tower 9; the other end of the insulator string 7 is connected with one end of the insulator string ice-coating tension sensor 1 and one end of the insulator string inclination angle sensor 10; the other ends of the insulator string ice-coating tension sensor 1 and the insulator string inclination angle sensor 10 are provided with one ends which are hung with the transmission conductors 8;
the microclimate sensor 2 is connected with the edge calculation module 3.
Further, the on-line monitoring device for the icing of the power transmission line also comprises an on-line monitoring device shell 6;
the online monitoring device shell 6 is used for accommodating the edge calculation module 3, the power supply module 5 and the communication module 4.
Further, in the device for on-line monitoring of ice coating on the power transmission line, the equivalent ice coating thickness D of the power transmission line in the edge calculation module 3iThe real-time calculation adopts the following formula:
Figure BDA0002611871570000051
wherein, delta F% is the percentage increase of the pulling force before and after icing of the suspension insulator string of the power transmission line, alpha is the wind deflection angle of the suspension insulator string, and sigmacIs the linear density of the conductor, piTaking the density of ice as 0.9g/cm3，RcIs the wire diameter, g is the acceleration of gravity.
Edge calculation module completes equivalent icing thickness D of power transmission lineiAfter calculation, comparing the calculation result with the designed icing thickness of the monitored line section, and when the icing thickness D is reachediWhen the thickness of the ice coating is larger than the designed specific value of the ice coating thickness of the line, early warning information is issued; when the icing is not generated or is light (the icing thickness is less than the designed icing thickness by 30%), the calculation result is not sent so as to reduce the comprehensive power consumption of the on-line monitoring device. The early warning threshold value and the early warning information return frequency are not limited, and differential configuration can be performed according to different actual requirements of an application site.
Further, the micro meteorological sensor 2 is arranged at the cross arm of the power transmission tower; the microclimate sensor 2 has the functions of monitoring wind speed, wind direction, temperature and humidity.
Further, the edge calculation module obtains an icing tension reference value when ice is not coated by periodically calculating the average value of the tension of the suspension insulator string of the power transmission line when ice is not coated, eliminates zero offset of the icing tension sensor caused by fatigue, aging and the like, realizes self calibration of equivalent ice coating thickness of the power transmission line, and the calibration strategy can be configured remotely.
Further, the power module 5 adopts a solar energy or storage battery or overhead ground wire induction energy obtaining mode.
As shown in fig. 2, fig. 2 is a flow chart of the equivalent icing thickness calculation, early warning, prediction and self-calibration work of the power transmission line of the invention;
an ice coating on-line monitoring method for a power transmission line comprises the following steps:
s1, generating sensing data by the insulator string ice-coating tension sensor 1 and the insulator string inclination angle sensor 10 and transmitting the sensing data to the edge calculation module 3;
s2, the edge calculation module 3 calculates the equivalent icing thickness D of the power transmission line according to the sensing datai；
S3, the edge calculation module 3 is used for calculating the equivalent icing thickness D of the power transmission lineiComparing the calculated thickness with the designed icing thickness of the monitored line section, and when the equivalent icing thickness D of the power transmission line is obtainediWhen the early warning threshold value is exceeded, releasing early warning information; when there is no ice coating or the thickness of ice coating DiWhen the thickness of the ice coating is less than 30% of the designed thickness, the calculation result is not sent; meanwhile, the edge calculation module 3 completes the prediction of the equivalent icing trend of the power transmission line according to the data monitored by the microclimate sensor 2.
Further, in a method for online monitoring of ice coating on a power transmission line, the sensing data in S1 includes: the percentage increase delta F of the tension of the suspension insulator string of the power transmission line before and after ice coating and the wind deflection angle alpha of the suspension insulator string;
in said S2Equivalent icing thickness D of power transmission lineiThe following formula should be satisfied:
Figure BDA0002611871570000061
wherein, delta F% is the percentage increase of the pulling force before and after icing of the suspension insulator string of the power transmission line, alpha is the wind deflection angle of the suspension insulator string, and sigmacIs the linear density of the conductor, piTaking the density of ice as 0.9g/cm3，RcIs the wire diameter, g is the acceleration of gravity.
Further, in the method for on-line monitoring of ice coating on the power transmission line, the data monitored by the microclimate sensor 2 in the step S3 specifically include temperature data, humidity data and wind speed data.
Further, in the method for online monitoring of ice coating on the power transmission line, the specific prediction rule for predicting the equivalent ice coating trend of the power transmission line in S3 is as follows:
a. when the temperature is-20-0 ℃, the humidity is more than 90%, and the wind speed is more than or equal to 1m/s, the trend prediction result is as follows: the icing is in a growing trend;
b. when the temperature is between-20 ℃ and 0 ℃, the humidity is less than or equal to 90 percent, and the wind speed is less than 1m/s, the trend prediction result is as follows: ice coating is kept stable;
c. when the temperature is 0 ℃ or less than-20 ℃, the humidity is any value and the wind speed is any value, the trend prediction result is as follows: ice coating is kept stable;
d. when the temperature value is more than 0 ℃, the humidity is an arbitrary value, and the wind speed is an arbitrary value, the trend prediction result is as follows: the icing tends to be ablated.
The edge calculation module 3 realizes the prediction of the equivalent icing trend of the power transmission line according to the temperature, humidity and wind speed data monitored by the microclimate sensor 2, and returns the prediction result through the communication module, and the prediction rule is as follows:
Figure BDA0002611871570000062
when the next icing season comes, the edge calculation module obtains an icing tension reference value when the icing is not coated by periodically calculating the average value of the tension of the suspension insulator string of the power transmission line when the icing is not coated, eliminates zero offset of the icing tension sensor caused by fatigue, aging and the like, realizes self calibration of equivalent icing thickness of the power transmission line, and can remotely configure the number taking period and the data quantity of the tension value of the suspension insulator string of the power transmission line when the icing is not coated.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (6)

1. An ice coating on-line monitoring device for a power transmission line comprises a sensor module, a power supply module (5) and a communication module (4), and is characterized by further comprising an edge calculation module (3);
the power module (5), the communication module (4) and the sensor module are respectively connected with the edge calculation module (3); the power module (5) is connected with the communication module (4);
the power supply module (5) is used for supplying power to the sensor module, the edge calculation module (3) and the communication module (4);
the sensor module is used for generating sensing data;
the edge calculation module (3) is used for collecting sensing data, calculating in real time according to the sensing data to obtain equivalent icing thickness, early warning data and icing trend prediction data, and executing an equivalent icing thickness self-calibration task;
the communication module (4) is used for returning the early warning data and the icing trend prediction data and receiving the configuration of the remote control background to the edge calculation module (3).
2. The device for on-line monitoring of ice coating on power transmission line according to claim 1, wherein the equivalent ice coating thickness of power transmission line in the edge calculation module (3)Degree DiThe real-time calculation adopts the following formula:
Figure FDA0002611871560000011
wherein, delta F% is the percentage increase of the pulling force before and after icing of the suspension insulator string of the power transmission line, alpha is the wind deflection angle of the suspension insulator string, and sigmacIs the linear density of the conductor, piTaking the density of ice as 0.9g/cm3，RcIs the wire diameter, g is the acceleration of gravity.
3. The device for on-line monitoring of ice coating on the power transmission line according to claim 2, wherein the edge calculation module obtains a reference value of ice coating tension when ice coating is not performed by periodically calculating an average value of tension of a suspension insulator string of the power transmission line when ice coating is not performed, eliminates zero point offset of an ice coating tension sensor caused by fatigue, aging and the like, realizes self calibration of equivalent ice coating thickness of the power transmission line, and can remotely configure a calibration strategy.
4. An ice coating on-line monitoring method for a power transmission line is characterized by comprising the following steps:
s1, generating sensing data by the insulator string ice-coating tension sensor (1) and the insulator string inclination angle sensor (10) and transmitting the sensing data to the edge calculation module (3);
s2, the edge calculation module (3) calculates the equivalent icing thickness D of the power transmission line according to the sensing datai；
S3, the edge calculation module (3) is used for calculating the equivalent icing thickness D of the transmission lineiComparing the calculated thickness with the designed icing thickness of the monitored line section, and when the equivalent icing thickness D of the power transmission line is obtainediWhen the early warning threshold value is exceeded, releasing early warning information; when there is no ice coating or the thickness of ice coating DiWhen the thickness of the ice coating is less than 30% of the designed thickness, the calculation result is not sent; meanwhile, the edge calculation module (3) completes the prediction of the equivalent icing trend of the power transmission line according to the data monitored by the microclimate sensor (2).
5. The method for on-line monitoring of ice coating on power transmission line according to claim 4, wherein the sensing data in S1 includes: the percentage increase delta F of the tension of the suspension insulator string of the power transmission line before and after ice coating and the wind deflection angle alpha of the suspension insulator string;
the equivalent icing thickness D of the power transmission line in S2iThe following formula should be satisfied:
Figure FDA0002611871560000021
wherein, delta F% is the percentage increase of the pulling force before and after icing of the suspension insulator string of the power transmission line, alpha is the wind deflection angle of the suspension insulator string, and sigmacIs the linear density of the conductor, piTaking the density of ice as 0.9g/cm3，RcIs the wire diameter, g is the acceleration of gravity.
6. The online monitoring method for icing on the transmission line according to claim 4, wherein the specific prediction rule for predicting the equivalent icing trend of the transmission line in the S3 is as follows:
a. when the temperature is-20-0 ℃, the humidity is more than 90%, and the wind speed is more than or equal to 1m/s, the trend prediction result is as follows: the icing is in a growing trend;
b. when the temperature is between-20 ℃ and 0 ℃, the humidity is less than or equal to 90 percent, and the wind speed is less than 1m/s, the trend prediction result is as follows: ice coating is kept stable;
c. when the temperature is 0 ℃ or less than-20 ℃, the humidity is any value and the wind speed is any value, the trend prediction result is as follows: ice coating is kept stable;
d. when the temperature value is more than 0 ℃, the humidity is an arbitrary value, and the wind speed is an arbitrary value, the trend prediction result is as follows: the icing tends to be ablated.
CN202010756936.2A 2020-07-31 2020-07-31 Online monitoring device and method for icing of power transmission line Pending CN111879275A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113252115A (en) * 2021-06-24 2021-08-13 广东电网有限责任公司 Online monitoring system and method for power transmission line
CN114354050A (en) * 2021-12-07 2022-04-15 贵州电网有限责任公司 Method for monitoring deicing process of power transmission line
CN116255916A (en) * 2022-12-13 2023-06-13 杭州马太能源互联网技术有限公司 Device and method for monitoring icing of power transmission line

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Application publication date: 20201103