CN211014974U - Icing diagnostic device for overhead transmission line - Google Patents
Icing diagnostic device for overhead transmission line Download PDFInfo
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- CN211014974U CN211014974U CN201921296956.5U CN201921296956U CN211014974U CN 211014974 U CN211014974 U CN 211014974U CN 201921296956 U CN201921296956 U CN 201921296956U CN 211014974 U CN211014974 U CN 211014974U
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Abstract
The utility model discloses an overhead transmission line icing diagnostic device comprises host computer, communication module, camera, meteorological collection module, first energy storage unit, second energy storage unit, first charging unit, second charging unit, charge-discharge control module. The utility model discloses an overhead transmission line icing diagnostic device passes through meteorological data and judges certainly and controlled ice-melt module double mode of opening, has avoided equipment still to open ice-melt module when not freezing, leads to the problem that electric power is not enough on the contrary when needs are opened.
Description
Technical Field
The invention relates to an icing diagnosis device for an overhead transmission line, in particular to an icing diagnosis device for an overhead transmission line in the power industry.
Background
The ice coating of the transmission line easily causes the occurrence of power accidents and influences the normal operation of the line.
The ice coating of the transmission line can cause overlarge line load and large sag, and the ground wire can jump during ice melting, thereby seriously influencing the normal and reliable operation of the line.
The most direct damage of the ice coating of the line is the load of the ground wire, the hardware fitting and the tower body, and the load of the overhead line is also continuously increased along with the continuous increase of the ice coating thickness, so that the strand breakage/fracture of the ground wire and the damage of the hardware fitting can be seriously caused, and even the tower can collapse.
The sensor part of the icing monitoring device generally consists of a tension/inclination sensor, a meteorological sensor and a camera.
One of the technical schemes in the prior art is as follows:
currently, the icing of a conductor is generally monitored by a tension method, and the equivalent icing thickness of a line is measured through the change of the load of the insulator conductor. The common method is to produce an integrated tension sensor with the same connecting structure as the tower body hardware to replace the hardware between the insulator and the tower so as to realize the real-time monitoring of the insulator and the wire load.
Meanwhile, a camera matched with the device is used for observing the operation condition of the field line.
The technical scheme has the following defects: through the calculation of a data model, observation is not intuitive, and once icing occurs, a camera arranged in the device is often frozen, so that the on-site icing condition cannot be intuitively seen.
The sensor is easily influenced by the environment (temperature, strong magnetic field and the like), has high failure rate and needs to be replaced frequently.
The second technical scheme in the prior art is as follows:
the ice coating device can use GPRS network transmission based on the operator.
The technical scheme has the following defects: ice coating devices are generally equipped with a camera, but cannot transmit video because of bandwidth limitations, which only allow pictures to be transmitted.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the invention is as follows:
the invention discloses a diagnosis method and a diagnosis device which are different from conventional icing, solves the problem that the conventional icing cannot visually observe the field condition through a camera during icing, and simultaneously calculates the icing quality by adopting a mode of combining weather analysis and image analysis.
The invention discloses a technical scheme of an overhead transmission line icing diagnosis device, which comprises the following steps:
the device comprises a host, a communication module, a camera, a weather acquisition module, a first energy storage unit, a second energy storage unit, a first charging unit, a second charging unit and a charging and discharging control module.
The host consists of a core processing module, a network module, an acquisition circuit, a storage module and the like and is responsible for acquiring, storing and analyzing data, and the host also has the video coding and decoding functions and can transmit video data acquired by the camera back to a system background through the communication module.
The communication module adopts a 4G module or an optical fiber transmission module.
The camera adopts a spherical camera with an ice melting function, is provided with a tripod head, and is characterized in that the inner edge of the camera outer cover is covered with a heat conducting wire which can be controlled to open or close a heating mode.
The meteorological collection module can collect meteorological parameters such as temperature, humidity, wind speed, wind direction.
The first power supply unit consists of a first energy storage unit and a first charging unit, and the second power supply unit consists of a second energy storage unit and a second charging unit.
Under normal conditions, the icing diagnostic device is powered only by the first power supply unit. When the heating is required to be started, the heating part is powered by the second power supply unit, and the use of the first power supply unit is not influenced.
And when the first power supply unit enters a low-voltage protection state, the charging and discharging controller automatically switches to supply power to the icing diagnosis device by using the second power supply unit.
The energy storage unit is preferably a storage battery with good low-temperature performance, and the charging unit is preferably a solar photovoltaic power supply unit.
The camera is normally in a closed state and can be controlled or automatically started, and the ice melting function can be set to be remotely controlled to be started according to needs or automatically judges whether to start ice melting according to meteorological environmental conditions. The ice melting function is started, and the general meteorological conditions need to meet the conditions that the temperature is lower than 0 ℃, the humidity is more than 85% RH, and the wind speed is 0-15 m/s.
The invention discloses a technical scheme of an overhead transmission line icing diagnosis method, which comprises the following steps:
an icing diagnosis method for an overhead transmission line comprises the following steps:
A. the method comprises the following steps that when a camera is in a closed state, the camera is started to enter picture capturing or video watching operation, and whether ice melting needs to be started or not is automatically judged according to meteorological data, and the method specifically comprises the following steps:
A1. preliminarily judging the latest meteorological data measured by the meteorological sensor, and judging whether the average temperature is less than or equal to 0 ℃, the average humidity is more than or equal to 85% RH, the average wind speed is more than or equal to 1m/s, if so, entering the next step of collecting the meteorological data again for double verification, and if not, directly entering the step A4 of snapshotting pictures or watching videos by the camera;
A2. collecting current meteorological data, determining whether the conditions that the temperature is less than or equal to 0 ℃ and the humidity is more than or equal to 85% RH are met, and starting ice melting if the conditions are met. If not, the camera directly enters a step A4 of capturing pictures or watching videos;
A3. the main control sends a command of starting ice melting to the charge-discharge controller and the camera, the charge-discharge controller controls the second power supply unit to supply power to the ice melting module of the camera, the ice melting is started, and different ice melting time can be set according to meteorological temperature data:
the air temperature is ∈ (-4 ℃ to 0 ℃), the opening time is 1min,
the air temperature is ∈ (-10 ℃ to-4 ℃), the opening time is 3min,
the temperature is less than or equal to 10 ℃, the furnace is opened for 5min,
or directly set to a fixed on-time, such as 2 min;
A4. after the operation of the ice melting module is finished or the judgment of the starting condition of the ice melting module is not satisfied, the camera enters the operation of capturing pictures or watching videos;
B. the icing diagnosis process comprises the following specific steps:
B1. judging whether the latest meteorological data measured by the meteorological sensor meet the icing condition or not, wherein the icing meteorological condition is as follows:
the icing is divided into rime type, rime, mixed rime, white frost and snow according to the forming conditions;
weather conditions of rime type: in the low-altitude area, the air temperature is-2-0 ℃, the relative humidity of air is more than or equal to 85 percent RH, and the wind speed is more than or equal to 1 m/s; the relative air humidity is more than or equal to 85% RH at the temperature of-4-0 ℃ in the mountainous region, and the air speed is 5-15 m/s;
weather conditions for rime: the temperature is-13 to-8 ℃, the humidity is more than or equal to 85 percent RH, and the wind speed is more than or equal to 1 m/s;
meteorological conditions for mix freezing: in low-altitude areas, the temperature is-5-0 ℃, the humidity is more than or equal to 85 percent RH, and the wind speed is more than or equal to 1 m/s; the temperature of the mountain is-10 to-3 ℃, the humidity is more than or equal to 85 percent RH, and the wind speed is 5 to 15 m/s;
weather conditions of white frost: the temperature is lower than-10 ℃, and the weather is cold and calm;
snow accumulation: the snow is accumulated only when the air temperature is about 0 ℃ and the wind speed is very low;
if the ice coating quality does not meet the requirement, entering a stage B2, and if the ice coating quality does not meet the requirement, entering a stage B14;
B2. after the conditions are met, synchronously starting an icing analysis function when starting the camera for snapshot next time;
B3. performing icing analysis on the shot image, firstly dividing the lead into a plurality of unit leads with the same length, wherein the unit leads are defined as L;
B4. judging the current sectional area of each lead according to the number of pixel points of each lead in the camera;
B5. calculating the current sectional area of each section of wire:
the current sectional area-the sectional area of the lead body is equal to the ice sectional area;
b14, judging the ice section area, and turning to the ice section area less than or equal to 0; calculating the ice sectional area not less than 0;
B6. calculating all ice sectional areas meeting the conditions;
B7. calculating the ice coating volume:
ice coating volume (∑ eligible cross-sectional area) × units of length;
B8. judging the icing type according to the combination of meteorological conditions and picture AI intelligent analysis, wherein the meteorological conditions are detailed in B1 icing judgment conditions, and the AI intelligent analysis is based on a deep learning algorithm and is trained by a plurality of different types of icing pictures to obtain a corresponding judgment model;
B9. and taking the icing density rho according to the icing type obtained by analysis:
the density of the rime-type ice coating is about 0.8-0.9 g/cm3，
The density of the rime-type ice coating is about 0.3-0.6 g/cm3，
The density of the freezing mixed type ice coating is about 0.6 to 0.8g/cm3，
The density of the white frost type ice coating is about 0.05-0.03 g/cm3；
B10. Calculating the icing mass:
ice coating mass m-density ρ × (∑ cross-sectional area S1) × unit length L;
B11. judging whether the calculated quality exceeds a preset threshold value or not according to the calculated quality, if so, entering a stage B12, and if not, entering a stage B13;
B12. pushing ice coating alarm information and suggesting operation and maintenance personnel to start line ice melting operation;
B13. keeping the calculated data, but not pushing an alarm;
B14. ice coating calculation was not performed when the conditions were not satisfied.
The invention has the beneficial effects that:
the icing diagnosis device for the overhead transmission line can solve the problem that the field condition cannot be observed visually during icing, and provides a new idea and a new method for measuring the icing quality.
The invention provides a dual-power supply mode, a first power supply does not participate in the power supply of a camera ice melting module and is only used for normally supplying power to equipment, and a second power supply is only used for supplying power to the camera ice melting module at ordinary times, so that the problem that the power supply of the equipment is only enough for the equipment to use and not enough for the camera to melt ice in the past is solved. While the second power source may also be used temporarily as a backup power source when the first power source is depleted of power.
The ice-coating diagnosis device for the overhead transmission line disclosed by the invention has the advantages that the ice-melting module is started through the meteorological data self-judgment and controlled mode, and the problem that the equipment still starts the ice-melting module when the ice is not frozen, so that the power is insufficient when the equipment needs to be started is solved.
Drawings
FIG. 1: the invention discloses a structural schematic diagram of an overhead transmission line icing diagnosis device;
FIG. 2: the invention relates to a flow chart of an overhead transmission line icing diagnosis method;
FIG. 3: the invention relates to an ice melting module work flow chart of an overhead transmission line icing diagnosis device;
in the figure: the system comprises a host, a communication module, a camera, a weather acquisition module, a first power supply unit, a first energy storage unit, a first charging unit, a second power supply unit, a second energy storage unit, a second charging unit, a first charging unit, a second charging unit, a first power supply unit, a second charging unit, a first charging unit, a second charging unit, a first power.
Detailed Description
The following describes in detail a specific embodiment of the present invention with reference to the drawings.
As shown in fig. 1, the device for diagnosing icing on the overhead transmission line comprises a host 1, a communication module 2, a camera 3, a weather acquisition module 4, a first power supply unit 5, a second power supply unit 6 and a charge and discharge control module 7.
The first power supply unit 5 is composed of a first energy storage unit 51 and a first charging unit 52, and the second power supply unit 6 is composed of a second energy storage unit 61 and a second charging unit 62.
The host 1 is composed of a core processing module 11, a network module 12, an acquisition circuit 13 and a storage module 14, and is responsible for acquiring, storing and analyzing data. Meanwhile, in order to ensure that the scene situation can be observed more intuitively, the host 1 also has the video coding and decoding functions, and video data collected by the camera can be compressed by H.265/H.264 and then transmitted back to the system background through the communication module 2.
The communication module 2 adopts a 4G module or an optical fiber transmission module to ensure video bandwidth.
The camera 3 adopts a spherical camera with an ice melting function, is provided with a tripod head, and is covered with heat conducting wires at the inner edge of a camera outer cover and can be controlled to open or close a heating mode.
The meteorological collection module 4 can collect meteorological parameters such as temperature, humidity, wind speed, wind direction.
In a normal case, the icing diagnosis device is powered only by the first power supply unit 5. When the heating needs to be started, the heating part is supplied with power by the second power supply unit 6, and the use of the first power supply unit 5 is not influenced.
When the first power supply unit 5 enters a low-voltage protection state, the charge and discharge controller automatically switches to supply power to the icing diagnosis device by using the second power supply unit 6.
The first and second energy storage units 51/61 are preferably batteries with good low-temperature performance, and the first and second charging units 52/62 are preferably solar photovoltaic power supply modules.
The camera 3 is normally in a closed state and can be controlled or automatically started, and the ice melting function can be set to be remotely controlled to be started according to needs or automatically judges whether to start ice melting according to meteorological environmental conditions. Usually, the meteorological conditions need to meet the conditions that the temperature is lower than 0 ℃, the humidity is more than 85% RH, and the wind speed is 0-15 m/s.
As shown in the flowcharts of fig. 2 and 3, the technical solution of the diagnosis method for icing on an overhead transmission line of the present invention is:
judging the meteorological conditions of ice coating: the icing is divided into rime type, rime, mixed rime, white frost and snow according to the forming conditions, and specifically comprises the following steps:
weather conditions of rime type: in the low-altitude area, the air temperature is-2-0 ℃, the relative humidity of air is more than or equal to 85 percent RH, and the wind speed is more than or equal to 1 m/s; the relative air humidity is more than or equal to 85% RH at the temperature of-4-0 ℃ in the mountainous region, and the air speed is 5-15 m/s;
weather conditions for rime: the temperature is-13 to-8 ℃, the humidity is more than or equal to 85 percent RH, and the wind speed is more than or equal to 1 m/s;
meteorological conditions for mix freezing: in low-altitude areas, the temperature is-5-0 ℃, the humidity is more than or equal to 85 percent RH, and the wind speed is more than or equal to 1 m/s; the temperature of the mountain is-10 to-3 ℃, the humidity is more than or equal to 85 percent RH, and the wind speed is 5 to 15 m/s;
weather conditions for white frost (not substantially seriously detrimental to the wires): the temperature is lower than-10 ℃, and the weather is cold and calm;
snow cover (pure snow cover basically has no harm to the line): the air temperature is about 0 ℃, and the air speed is generated when the air speed is very low.
An icing diagnosis method for an overhead transmission line comprises the following steps:
A. the method comprises the following steps that when a camera is in a closed state, the camera is started to enter picture capturing or video watching operation, and whether ice melting needs to be started or not is automatically judged according to meteorological data, and the method specifically comprises the following steps:
A1. the latest meteorological data (usually data within one hour) measured by the meteorological sensor is preliminarily judged, and whether the conditions are that the average air temperature is less than or equal to 0 ℃, the average humidity is more than or equal to 85% RH, and the average wind speed is more than or equal to 1m/s (can be set and changed according to the specific terrain installation conditions) are met or not is judged. If the double verification is met, the next step is carried out, weather data are collected again for double verification, and if the double verification is not met, the camera directly enters the step A4 of capturing pictures or watching videos;
A2. collecting current meteorological data, determining whether the conditions that the temperature is less than or equal to 0 ℃ and the humidity is more than or equal to 85% RH are met, and starting ice melting if the conditions are met. If not, the camera directly enters a step A4 of capturing pictures or watching videos;
A3. the main control sends a command of starting ice melting to the charge-discharge controller and the camera, the charge-discharge controller controls the second power supply unit to supply power to the ice melting module of the camera, the ice melting is started, different ice melting time (time can be set) can be set according to meteorological temperature data, and if:
the air temperature is ∈ (-4 ℃ to 0 ℃), the opening time is 1min,
the air temperature is ∈ (-10 ℃ to-4 ℃), the opening time is 3min,
the temperature is less than or equal to 10 ℃, the furnace is opened for 5min,
or directly set to a fixed on-time, such as 2 min;
A4. after the operation of the ice melting module is finished or the judgment of the starting condition of the ice melting module is not satisfied, the camera enters the operation of capturing pictures or watching videos;
B. icing diagnosis process:
B1. the latest weather data (usually within one hour) measured by the weather sensor is judged whether the icing condition is satisfied. The icing meteorological conditions were as follows:
the icing is divided into rime type, rime, mixed rime, white frost and snow according to the forming conditions,
weather conditions of rime type: in the low-altitude area, the air temperature is-2-0 ℃, the relative humidity of air is more than or equal to 85 percent RH, and the wind speed is more than or equal to 1 m/s; in the temperature of-4 ℃ to 0 ℃ in the mountain area, the relative humidity of air is more than or equal to 85 percent RH, the wind speed is 5-15 m/s,
weather conditions for rime: the temperature is-13 to-8 ℃, the humidity is more than or equal to 85 percent RH, the wind speed is more than or equal to 1m/s,
meteorological conditions for mix freezing: in low-altitude areas, the temperature is-5-0 ℃, the humidity is more than or equal to 85 percent RH, and the wind speed is more than or equal to 1 m/s; in the temperature of-10 to-3 ℃, the humidity of more than or equal to 85 percent RH and the wind speed of 5 to 15m/s in the mountainous region,
weather conditions for white frost (not substantially seriously detrimental to the wires): the temperature is lower than minus 10 ℃, when the weather is cold and calm,
snow cover (pure snow cover basically has no harm to the line): the air temperature is about 0 ℃, the air speed is generated when the air speed is very low,
if the ice coating quality does not meet the requirement, entering a stage B2, and if the ice coating quality does not meet the requirement, entering a stage B14;
B2. after the conditions are met, synchronously starting an icing analysis function when starting the camera for snapshot next time;
B3. the captured images were analyzed for ice coating by first dividing the wire into several sections of unit wires of equal length, defined as L,
B4. judging the current sectional area of the wire according to the number of pixel points of each section of wire in the camera,
B5. calculating the current sectional area of each section of wire:
the current sectional area-the sectional area of the lead body-is the ice sectional area,
b14, judging the ice section area, and turning to the ice section area less than or equal to 0; calculating the ice sectional area not less than 0;
B6. calculating all ice sectional areas meeting the conditions;
B7. calculating the ice coating volume:
(∑ eligible cross-sectional area 1) × units length-ice accretion volume;
B8. judging the icing type according to the combination of meteorological conditions and picture AI intelligent analysis, wherein the meteorological conditions are detailed in B1 icing judgment conditions, and the AI intelligent analysis is based on a deep learning algorithm and is trained by a plurality of different types of icing pictures to obtain a corresponding judgment model;
B9. taking the density rho of the ice coating according to the icing type obtained by analysis, wherein the densities rho of different types of ice coatings are different, and generally speaking:
the density of the rime-type ice coating is about 0.8-0.9 g/cm3，
The density of the rime-type ice coating is about 0.3-0.6 g/cm3，
The density of the freezing mixed type ice coating is about 0.6 to 0.8g/cm3，
The density of the white frost type ice coating is about 0.05-0.03 g/cm3；
B10. Calculating the icing mass:
ice coating mass m-density ρ × (∑ cross-sectional area S1) × unit length L;
B11. judging whether the calculated quality exceeds a preset threshold value or not according to the calculated quality, if so, entering a stage B12, and if not, entering a stage B13;
B12. pushing ice coating alarm information and suggesting operation and maintenance personnel to start line ice melting operation;
B13. keeping the calculated data, but not pushing an alarm;
B14. ice coating calculation was not performed when the conditions were not satisfied.
Claims (7)
1. The utility model provides an overhead transmission line icing diagnostic device which characterized in that: the device consists of a host (1), a communication module (2), a camera (3), a weather acquisition module (4), a first power supply unit (5), a second power supply unit (6) and a charge-discharge control module (7); the host (1) consists of a core processing module (11), a network module (12), an acquisition circuit (13) and a storage module (14), and the host (1) has a video encoding and decoding function and can transmit video data acquired by a camera back to a system background through a communication module (2); under normal conditions, the ice coating diagnosis device is powered only by a first power supply unit (5), and when heating needs to be started, a heating part is powered by a second power supply unit (6); when the first power supply unit (5) enters a low-voltage protection state, the charge and discharge controller automatically switches to supply power to the overhead transmission line icing diagnosis device through the second power supply unit (6).
2. The overhead transmission line icing diagnostic apparatus of claim 1, wherein: the first power supply unit (5) is composed of a first energy storage unit (51) and a first charging unit (52), and the second power supply unit (6) is composed of a second energy storage unit (61) and a second charging unit (62).
3. The overhead transmission line icing diagnostic apparatus of claim 1, wherein: the camera (3) adopts a spherical camera with an ice melting function and is provided with a tripod head, and the inner edge of the camera outer cover is covered with a heat conducting wire which can be controlled to open or close a heating mode; the camera (3) is normally in a closed state and can be controlled or automatically started, and the ice melting function can be set to be remotely controlled to be started according to needs or automatically judged whether to start the ice melting function according to meteorological environment conditions.
4. The overhead transmission line icing diagnostic apparatus of claim 1, wherein: the meteorological collection module (4) can collect meteorological parameters such as temperature, humidity, wind speed and wind direction.
5. The overhead transmission line icing diagnostic apparatus of claim 1, wherein: the communication module (2) adopts a 4G module or an optical fiber transmission module.
6. The overhead transmission line icing diagnostic apparatus of claim 2, wherein: the first energy storage unit (51) and the second energy storage unit (61) are preferably storage batteries with good low-temperature performance, and the first charging unit (52) and the second charging unit (62) are preferably solar photovoltaic power supply modules.
7. The overhead transmission line icing diagnostic apparatus of claim 2, wherein: the meteorological conditions for starting the ice melting function are that the temperature is lower than 0 ℃, the humidity is more than 85% RH and the wind speed is 0-15 m/s.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376830A (en) * | 2019-08-12 | 2019-10-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of coated by ice of overhead power transmission line diagnostic method and its diagnostic device |
| CN112072593A (en) * | 2020-09-29 | 2020-12-11 | 中国南方电网有限责任公司超高压输电公司贵阳局 | But comprehensive equipment of automatic termination of remote control ground wire ice-melt |
| CN116260094A (en) * | 2023-05-15 | 2023-06-13 | 山东鲁信通光电科技有限公司 | OPGW optical cable intelligent ice melting system of digital Internet of things |
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2019
- 2019-08-12 CN CN201921296956.5U patent/CN211014974U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376830A (en) * | 2019-08-12 | 2019-10-25 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of coated by ice of overhead power transmission line diagnostic method and its diagnostic device |
| CN110376830B (en) * | 2019-08-12 | 2023-09-05 | 中国南方电网有限责任公司超高压输电公司电力科研院 | Overhead transmission line icing diagnosis method and diagnosis device thereof |
| CN112072593A (en) * | 2020-09-29 | 2020-12-11 | 中国南方电网有限责任公司超高压输电公司贵阳局 | But comprehensive equipment of automatic termination of remote control ground wire ice-melt |
| CN116260094A (en) * | 2023-05-15 | 2023-06-13 | 山东鲁信通光电科技有限公司 | OPGW optical cable intelligent ice melting system of digital Internet of things |
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