A monitoring and early warning system for power network communication equipment

Abstract

The present invention relates to the technical field of monitoring and management systems, and in particular to a monitoring and early warning system for electric power network communication equipment, comprising a plurality of monitoring devices, and further comprising: an area construction unit, marking an electric power network node as a power grid node, dividing the power grid node into a plurality of independent rectangles; a plurality of maintenance points are preset to clarify the ownership of each independent rectangle; an icing early warning unit, acquiring environmental data and transmission line data within the independent rectangle, thereby analyzing and calculating line influence values, wind speed influence values, humidity influence values ​​and temperature influence values, and calculating icing early warning values ​​for judging the future icing conditions of the transmission line; an icing monitoring unit, acquiring the current wind speed, the current wind direction and the tension at both ends of the transmission line, constructing a wind vector in combination with the wind speed and the wind direction and performing vector decomposition, obtaining a second vector on the cross section of the transmission line, and analyzing and calculating attachment parameters for judging the current icing conditions of the transmission line based on the second vector and the line gravity vector.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring and management systems, and in particular to a monitoring and early warning system for power network communication equipment. Background Art

[0002] Ice accumulation on power lines is a natural disaster. As power lines are exposed to the wild for a long time and are in a complex geographical environment, the intensity and frequency of natural disasters caused by extreme weather and climate events are increasing. Ice accumulation on power lines has seriously affected the safety and stability of the power system. Ice accumulation on power lines that exceeds the design standard may lead to ice disasters. When the ice melts and falls off, it is easy to cause flashover and damage to insulators.

[0003] In order to prevent ice accumulation on power lines in the prior art, a comprehensive forecast is generally made based on the meteorological data of the Meteorological Bureau to determine whether ice accumulation will occur, so as to take timely prevention measures. However, since meteorological data generally covers a wide range and is difficult to accurately identify a specific area, and since the distribution range of transmission lines is wide and the environment varies greatly, relying solely on meteorological data for icing hazard warnings is insufficient to reflect the ice accumulation of all transmission lines, resulting in poor warning effects and prone to false alarms or omissions. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a power network communication equipment monitoring and early warning system, which can effectively solve the problem of poor early warning effect of ice accumulation hazards on transmission lines in the prior art.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a monitoring and early warning system for power network communication equipment, which at least comprises: a plurality of monitoring devices, and further comprises:

[0007] The regional construction unit marks the power network nodes as grid nodes and divides the grid nodes into multiple independent rectangles;

[0008] There are multiple maintenance points preset, the route between the maintenance points and the independent rectangles is analyzed, and the arrival time parameters from the maintenance points to the center of the independent rectangles are calculated to clarify the ownership of each independent rectangle;

[0009] An icing warning unit obtains environmental data and transmission line data within an independent rectangular range, analyzes and calculates line impact values, wind speed impact values, humidity impact values, and temperature impact values, and calculates an icing warning value for judging the future icing condition of the transmission line based on a variety of impact values;

[0010] The icing monitoring unit obtains the current wind speed, current wind direction and tension at both ends of the transmission line, constructs a wind vector based on the wind speed and wind direction, and performs vector decomposition to obtain a second vector on the cross section of the transmission line, and calculates the attachment parameters used to determine the current icing condition of the transmission line based on the second vector and the line gravity vector analysis;

[0011] The warning adjustment unit adjusts the alarm thresholds of the icing warning values ​​and the attachment parameters of each monitoring device in response to the icing warning values ​​based on the arrival time parameter between the maintenance point and the independent rectangle.

[0012] Furthermore, the area construction unit obtains a scatter distribution map and a contour map of the power grid nodes, constructs a range rectangle of the power grid nodes according to the terrain height range around the power grid nodes, and determines whether two adjacent power grid nodes are divided into the same range rectangle according to the overlap of adjacent rectangles, thereby obtaining independent rectangles.

[0013] Furthermore, the process of constructing the range rectangle by the region construction unit is as follows:

[0014] Get the contour map around the power grid node and the altitude of the power grid node , with preset height range values , marked on the contour map The two contour lines are recorded as the limit contour lines. The square with the largest area is drawn between the two limit contour lines with the power grid node as the center as the target rectangle. The side length of the target rectangle is used as the side length L of the range rectangle.

[0015] The process of dividing and merging independent rectangles in the area construction unit is as follows:

[0016] The two adjacent power grid nodes are recorded as adjacent nodes, and the straight-line distance between the two adjacent nodes is calculated to obtain , get the side lengths of the range rectangles corresponding to two adjacent nodes, respectively recorded as and ,in is the side length of the larger rectangle, is the side length of the smaller rectangle, when Less than or equal to When the side length is The range rectangle of two adjacent nodes is used as the common range rectangle of two adjacent nodes.

[0017] Furthermore, the region construction unit determines the belonging process of the independent rectangle as follows:

[0018] Get the route from the maintenance point to the center point of the independent rectangle, extract the length of the expressway, first-class highway, second-class highway, third-class highway, fourth-class highway and other highways in the route, and record them as , substitute into the formula Calculate the arrival time parameter ,in They are all preset weight coefficients with preset time distance thresholds;

[0019] When the arrival time parameter between the maintenance point and the independent rectangle is less than or equal to the time distance threshold, all power grid nodes in the independent rectangle are divided into the supervision range of the maintenance point. When a power grid node belongs to the supervision range of multiple maintenance points, it is divided into the supervision range of the maintenance point with the smallest arrival time parameter.

[0020] Furthermore, the icing warning unit analysis process is as follows:

[0021] Get the current time, current temperature and the lowest temperature of the day. There is a preset temperature threshold. When the current temperature is greater than or equal to the temperature threshold, substitute the current temperature, current time and the lowest temperature of the day into the formula Calculate the temperature influence value ,in represents the lowest temperature of the day, t represents the current time, Indicates the current temperature. is the preset constant factor; when the current temperature is less than the temperature threshold, the temperature influence value is 1;

[0022] Get the current relative humidity , substitute into the formula Calculate the humidity impact value ,in is the preset constant coefficient;

[0023] Get the average wind speed for the day , substitute into the formula Calculate the wind speed impact value ,in is a preset constant value, is the preset constant coefficient;

[0024] The transmission lines between each grid node within the independent rectangular range are recorded as target transmission lines, the cross-sectional areas of each target transmission line are obtained, and the average cross-sectional area is calculated and recorded as the cross-sectional mean. , obtain the length of each target transmission line and select the maximum length as the peak length , obtain the installation height of each target transmission line and select the maximum height as the peak height , substitute into the formula Calculate the line impact value ,in is the preset constant coefficient;

[0025] Line influence value , Wind speed impact value , Humidity impact value and temperature influence value After normalization, enter the formula Calculate the icing warning value ,in:

[0026] is the preset weight coefficient, It is an adjustable parameter, and its value depends on the future precipitation. It obtains the precipitation in the next 12 hours. There is a preset precipitation threshold. When the precipitation is less than or equal to the precipitation threshold, The value is 0.3. When the precipitation is greater than the precipitation threshold, The value is 0.9.

[0027] Furthermore, the icing monitoring unit analyzes and calculates the process as follows:

[0028] Get current wind speed and current wind direction, obtain the end tension of the current transmission line , consider the transmission line as a straight line passing through its two terminals, and calculate the sine value of the angle between the current wind direction and the transmission line ;

[0029] The current wind speed The wind vector is constructed by using the current wind direction as the magnitude and the wind direction as the vector direction. The wind vector is split into a first vector parallel to the transmission line and a second vector located on the cross section of the transmission line. The magnitude of the second vector is obtained. Substitute into the formula Calculate the wind impact value ,in is the preset proportional coefficient;

[0030] Wind impact value The third vector is constructed with the modulus as the modulus and the direction of the second vector as the vector direction. The vector sum of the third vector and the gravity of the transmission line is calculated and the modulus length is calculated to obtain the tension influence value. , substitute the tension influence value and the end tension into the formula Calculate the attachment parameters ,in , These are preset values.

[0031] Furthermore, the early warning adjustment unit adjusts the alarm threshold in the following process:

[0032] Get the independent rectangle to which the monitoring device belongs, and get the arrival time parameter corresponding to the independent rectangle ;Substitute into the formula Calculate the first warning threshold ,in They are all preset constant values. For a preset first influence coefficient, compare the icing warning value with the first warning threshold value to generate an icing warning signal;

[0033] Substitute into the formula Calculate the second warning threshold ,in They are all preset constant values. When the attachment parameter is compared with the second warning threshold value for the preset second influence coefficient, an icing warning signal is generated;

[0034] When an icing alarm signal and an icing warning signal are generated simultaneously, the icing alarm signal is sent first.

[0035] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0036] 1. The present invention divides each power network node into multiple independent rectangles through the regional construction unit, so as to facilitate the zoning management and control, and then clarifies the supervision ownership of the power network nodes within each independent rectangle according to the route data of each independent rectangle from the maintenance point, so as to facilitate more convenient and rapid maintenance and management, which is conducive to the rapid resolution of problems in the power network.

[0037] 2. The ice warning unit of the present invention can calculate the ice warning value based on the meteorological data of the day and the data analysis of the transmission line itself. The ice warning value reflects the ice hazard of the transmission line within the independent rectangular range in a certain period of time in the future, so as to prevent the ice of the transmission line. Compared with the method of relying solely on meteorological data for warning in the prior art, it can fully consider the influence of the transmission line itself, which is conducive to better forming a warning signal. In addition, the ice monitoring unit can determine the influence of wind on the line by decomposing the wind vector. Under the premise of considering the influence of wind on tension, the attachment parameter calculated by the preset formula can more accurately reflect the weight of the attachment on the transmission line, so as to clarify whether there is snow accumulation or ice, thereby eliminating the influence of the singleness of meteorological data monitoring and warning.

[0038] 3. The early warning adjustment unit of the present invention adjusts the conditional thresholds of two different types of alarm signals according to the time required for reaching the monitoring point from the maintenance point, that is, the arrival time parameter. When the arrival time parameter is large, the threshold is adaptively lowered so that the alarm signal is triggered and generated at a time point earlier than the base value, thereby enabling maintenance personnel to trigger earlier and arrive at the scene to deal with possible risk situations before they occur. Compared with the maintenance assignment process in the prior art, it can respond to disaster warnings earlier and reduce the economic losses caused by power network failures caused by snow accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 It is the overall module block diagram of the present invention. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The present invention will be further described below in conjunction with the embodiments.

[0043] See also Figure 1 A monitoring and early warning system for power network communication equipment includes at least: a plurality of monitoring devices for monitoring environmental data, the monitoring devices monitor the state security of the power network and upload the data through communication, and a remote terminal performs remote monitoring and early warning on the power network security of each region based on the monitoring data of the plurality of monitoring devices, and also includes a regional construction unit,

[0044] The regional construction unit is used to construct a monitoring network and divide the power network into multiple areas for regional supervision to facilitate fast and efficient management, including:

[0045] Get the coordinate position (longitude and latitude) of each power network node and draw a scatter distribution map of the power network nodes. Record each scattered point in the scatter distribution map as a power grid node. Draw a rectangle with a side length of L (a square of L*L) with each power grid node as the center to obtain multiple range rectangles, thereby obtaining the surrounding range of each power grid node (other power grid nodes within the surrounding range of a power grid node can be considered to belong to the same range area as the power grid node). Among them:

[0046] Get the contour map around the power grid node (the map contains contour lines with fixed spacing) and get the altitude of the power grid node , with preset height range values , marked on the contour map The two contour lines are recorded as limit contour lines. A square with the largest area is drawn between the two limit contour lines with the power grid node as the center as the target rectangle, and the side length of the target rectangle is used as the side length L of the range rectangle.

[0047] It should be noted that the surrounding range of the power grid node is limited by drawing two contour lines with a certain height difference, so that the drawn target rectangular range is within a certain height difference range, and the height difference of each power grid node in the same range rectangle will not be too large, which is convenient for unified management and monitoring.

[0048] Analyze any two adjacent power grid nodes and compare the overlap of their range intervals. Then divide the overlapping power grid nodes into the same range rectangle to obtain multiple independent rectangles, where:

[0049] The two adjacent power grid nodes are recorded as adjacent nodes, and the straight-line distance between the two adjacent nodes is calculated to obtain , get the side lengths of the range rectangles corresponding to two adjacent nodes, respectively recorded as and ,in is the side length of the larger rectangle, is the side length of the smaller rectangle, when Less than or equal to When the side length is The range rectangle of two adjacent nodes is used as the common range rectangle of two adjacent nodes.

[0050] It should be noted that when the two grid nodes Greater than This means that the two cannot be monitored together as grid nodes in the same range area. At this time, although the range rectangles of the two may overlap, they are still regarded as two independent range rectangles.

[0051] There are multiple maintenance points preset for daily maintenance and emergency repair of power networks. The location of the maintenance point is obtained, and the distance parameters between the maintenance point and the independent rectangle are analyzed. The time required from the maintenance point to the center point of the independent rectangle is obtained based on the distance parameters, and the ownership of each independent rectangle is clarified, as follows:

[0052] Get the route from the maintenance point to the center point of the independent rectangle, extract the lengths of the expressway, first-class highway, second-class highway, third-class highway, fourth-class highway and off-grade highway (off-grade highway refers to a road that is not within the highway grade range, which is a specific term in the prior art) in the route, and record them as , substitute into the formula Calculate the arrival time parameter ,in They are all preset weight coefficients, which represent the time required from the maintenance point to the center point of the independent rectangle. A time distance threshold is preset. When the arrival time parameter between the maintenance point and the independent rectangle is less than or equal to the time distance threshold, all power grid nodes in the independent rectangle are divided into the supervision range of the maintenance point. When a power grid node belongs to the supervision range of multiple maintenance points, it is divided into the supervision range of the maintenance point with the smallest arrival time parameter.

[0053] It should be noted that power network nodes refer to line conversion facilities such as substations, transformer substations, and various poles and towers. Power resources flow to power users through high-voltage lines via various power network nodes. Maintenance points generally refer to those power base stations responsible for managing the power network. Power base stations can maintain, repair, and manage nearby power base stations to ensure the maintenance and operation of the power network, and can monitor the operating status of the power grid in real time, including key parameters such as voltage, current, power factor, and the health of equipment, so as to respond to power network failures in a timely manner.

[0054] By analyzing and calculating the path composition between the maintenance point and the independent rectangle, the travel time between the two can be predicted, and then the supervision can be divided according to the length of time, so as to achieve more convenient and rapid maintenance and management, which is conducive to the rapid resolution of problems in the power network.

[0055] The icing warning unit obtains environmental data and transmission line data within an independent rectangular range through data monitoring equipment, predicts the icing conditions of the transmission lines within the independent rectangular range based on the environmental data, and generates an icing warning signal according to the icing conditions of the transmission lines.

[0056] Get the current time, current temperature and the lowest temperature of the day. There is a preset temperature threshold. When the current temperature is greater than or equal to the temperature threshold, substitute the current temperature, current time (in hours and using a 24-hour system) and the lowest temperature of the day into the formula Calculate the temperature influence value ,in represents the lowest temperature of the day, t represents the current time, Indicates the current temperature. is the preset constant factor; when the current temperature is less than the temperature threshold, the temperature influence value is 1;

[0057] Get the current relative humidity , substitute into the formula Calculate the humidity impact value ,in is the preset constant coefficient;

[0058] Get the average wind speed for the day , substitute into the formula Calculate the wind speed impact value ,in is a preset constant value (representing the wind speed value that is most favorable for water vapor or water droplets to freeze on the surface of the transmission line. In a specific embodiment, The value is 8m / s). is the preset constant coefficient;

[0059] It should be noted that the speed of ice formation on the surface of the transmission line is affected by wind speed. Wind at a certain value will cause supercooled water droplets and water vapor in the air to move and collide with the wires, and then be captured by the wires. At a lower temperature, the water droplets freeze to form ice. Too high or too low wind speed will have a negative impact on the formation of ice (compared with a certain wind speed);

[0060] The transmission lines between each grid node within the independent rectangular range are recorded as target transmission lines, the cross-sectional areas of each target transmission line are obtained, and the average cross-sectional area is calculated and recorded as the cross-sectional mean. , obtain the length of each target transmission line and select the maximum length as the peak length , obtain the installation height of each target transmission line and select the maximum height as the peak height , substitute into the formula Calculate the line impact value ,in is the preset constant coefficient;

[0061] It should be noted that experiments have shown that transmission lines at higher altitudes are more susceptible to ice formation due to a variety of factors;

[0062] Line influence value , Wind speed impact value , Humidity Impact Value and temperature influence value After normalization, enter the formula Calculate the icing warning value ,in is the preset weight coefficient, It is an adjustable parameter, and its value depends on the future precipitation. It obtains the precipitation in the next 12 hours. There is a preset precipitation threshold. When the precipitation is less than or equal to the precipitation threshold, The value is 0.3. When the precipitation is greater than the precipitation threshold, The value is 0.9. When there is precipitation, the relative humidity in the air will rise rapidly and water droplets will form on the surface of the transmission line. In this case, the ice (solidification) formed will be denser than the ice produced by condensation, and the negative impact on the transmission line will be greater.

[0063] It should be noted that the ice warning value reflects the ice hazard of the transmission lines within the independent rectangular range in a certain period of time in the future. The larger the ice warning value, the more likely the transmission lines in the area are to experience serious ice formation, and the greater the risk of causing power failures. Conversely, the smaller the risk level.

[0064] The icing monitoring unit analyzes the current icing conditions of each transmission line based on the current environmental data and the data of each transmission line, including:

[0065] Get current wind speed and current wind direction, obtain the end tension of the current transmission line (It can be measured by a tension detection device installed at the wiring terminal. The tension detection device is a prior art and will not be described in detail here). Calculate the sine value of the angle between the current wind direction and the transmission line. , when calculating the sine value of the angle, the transmission line is regarded as a straight line passing through its two terminals (when calculating the direction parameters of the transmission line, the transmission line is regarded as a straight line for calculation);

[0066] The current wind speed The wind vector is constructed by using the current wind direction as the magnitude and the wind direction as the vector direction. The wind vector is split into a first vector parallel to the transmission line and a second vector located on the cross section of the transmission line. The magnitude of the second vector is obtained. Substitute into the formula Calculate the wind impact value ,in is the preset proportional coefficient;

[0067] Wind impact value The third vector is constructed with the modulus as the modulus and the direction of the second vector as the vector direction. The vector sum of the third vector and the gravity of the transmission line is calculated and the modulus length is calculated to obtain the tension influence value. , substitute the tension influence value and the end tension into the formula Calculate the attachment parameters ,in , All are preset values;

[0068] By decomposing the wind vector, the impact of wind on the conductor can be determined. Under the premise of considering the impact of wind on tension, the attachment parameters calculated by the preset formula can more accurately reflect the weight of the attachments on the transmission line to clarify whether there is snow or ice.

[0069] It should be noted that the attachment parameters obtained based on wind speed and wind direction indirectly illustrate the quality of the attachments on the transmission wires. The factors that affect the changes in the quality of the attachments on the transmission wires are generally raindrops, snow accumulation and frozen ice. Therefore, the size of the attachment parameters can be used to preliminarily judge the icing conditions on the transmission wires. Especially when it is greater than a certain value, it can be considered that the weight of the ice attached to the transmission wires is too large, which may cause ice disasters such as tower collapse and line breakage, wire dancing, switch equipment failure, insulation discharge outside the equipment, large-scale power outages and water shortages.

[0070] It also includes an early warning adjustment unit, which adjusts the alarm threshold of each monitoring device based on the arrival time parameter between the maintenance point and the independent rectangle, wherein:

[0071] Get the independent rectangle to which the monitoring device belongs, and get the arrival time parameter corresponding to the independent rectangle;

[0072] Substitute into the formula Calculate the first warning threshold ,in They are all preset constant values. is a preset first influence coefficient. When the icing warning value is higher than the first warning threshold, an icing warning signal is generated and sent to the terminal equipment at the maintenance point to remind the staff to prevent the transmission line from icing.

[0073] Substitute into the formula Calculate the second warning threshold ,in They are all preset constant values. is the preset second influence coefficient. When the attachment parameter is higher than the second warning threshold, an icing alarm signal is generated and sent to the terminal equipment at the maintenance point to remind the staff to deal with the icing of the transmission line in time.

[0074] By setting and , so that the lower limit of the threshold will not be affected by the arrival time parameter and reduced to an excessively low trigger level, thereby avoiding frequent generation of alarm signals and reducing the misjudgment rate.

[0075] When an icing alarm signal and an icing warning signal are generated at the same time, the icing alarm signal will be sent first, and the same signal will not be generated again within 24 hours after it is received and confirmed.

[0076] It should be noted that the conditional thresholds of two different types of alarm signals are adjusted according to the time required to reach the monitoring point from the maintenance point, that is, the arrival time parameter. When the arrival time parameter is large, the threshold is adaptively lowered so that the alarm signal will be triggered and generated at a time point earlier than the basic value, thereby enabling maintenance personnel to trigger it earlier and arrive at the scene to deal with it before possible risk situations occur. Compared with the maintenance assignment process in the prior art, it can respond to disaster warnings earlier and reduce the economic losses caused by power network failures caused by snow accumulation.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power network communication equipment monitoring and early warning system, comprising: A plurality of monitoring devices, characterized in that they also include: The regional construction unit marks the power network nodes as grid nodes and divides the grid nodes into multiple independent rectangles; There are multiple maintenance points preset, the route between the maintenance points and the independent rectangles is analyzed, and the arrival time parameters from the maintenance points to the center of the independent rectangles are calculated to clarify the ownership of each independent rectangle; An icing warning unit obtains environmental data and transmission line data within an independent rectangular range, analyzes and calculates line impact values, wind speed impact values, humidity impact values, and temperature impact values, and calculates an icing warning value for judging the future icing condition of the transmission line based on a variety of impact values; The icing monitoring unit obtains the current wind speed, current wind direction and tension at both ends of the transmission line, constructs a wind vector based on the wind speed and wind direction, and performs vector decomposition to obtain a second vector on the cross section of the transmission line, and calculates the attachment parameters used to determine the current icing condition of the transmission line based on the second vector and the line gravity vector analysis; The analysis and calculation process of the icing monitoring unit is as follows: Get current wind speed and current wind direction, obtain the end tension of the current transmission line , consider the transmission line as a straight line passing through its two terminals, and calculate the sine value of the angle between the current wind direction and the transmission line ; The current wind speed The wind vector is constructed by using the current wind direction as the magnitude and the wind direction as the vector direction. The wind vector is split into a first vector parallel to the transmission line and a second vector located on the cross section of the transmission line. The magnitude of the second vector is obtained. Substitute into the formula Calculate the wind impact value ,in is the preset proportional coefficient; Wind impact value The third vector is constructed with the modulus as the modulus and the direction of the second vector as the vector direction. The vector sum of the third vector and the gravity of the transmission line is calculated and the modulus length is calculated to obtain the tension influence value. , substitute the tension influence value and the end tension into the formula Calculate the attachment parameters ,in , All are preset values; The warning adjustment unit adjusts the alarm thresholds of the icing warning values ​​and the attachment parameters of each monitoring device in response to the icing warning values ​​based on the arrival time parameter between the maintenance point and the independent rectangle.

2. A power network communication equipment monitoring and early warning system according to claim 1, characterized in that: The area construction unit obtains the scattered distribution map and contour map of the power grid nodes, constructs the range rectangle of the power grid nodes according to the terrain height range around the power grid nodes, and determines whether to divide two adjacent power grid nodes into the same range rectangle according to the overlap of adjacent rectangles, thereby obtaining independent rectangles.

3. A power network communication equipment monitoring and early warning system according to claim 2, characterized in that: The process of constructing the range rectangle by the area construction unit is as follows: Get the contour map around the power grid node and the altitude of the power grid node , with preset height range values , marked on the contour map The two contour lines are recorded as the limit contour lines. The square with the largest area is drawn between the two limit contour lines with the power grid node as the center as the target rectangle. The side length of the target rectangle is used as the side length L of the range rectangle. The process of dividing and merging independent rectangles in the area construction unit is as follows: The two adjacent power grid nodes are recorded as adjacent nodes, and the straight-line distance between the two adjacent nodes is calculated to obtain , get the side lengths of the range rectangles corresponding to two adjacent nodes, respectively recorded as and ,in is the side length of the larger rectangle, is the side length of the smaller rectangle, when Less than or equal to When the side length is The range rectangle of two adjacent nodes is used as the common range rectangle of two adjacent nodes.

4. A power network communication equipment monitoring and early warning system according to claim 3, characterized in that: The process of determining the belonging of the independent rectangle by the region construction unit is as follows: Get the route from the maintenance point to the center point of the independent rectangle, extract the length of the expressway, first-class highway, second-class highway, third-class highway, fourth-class highway and other highways in the route, and record them as , substitute into the formula Calculate the arrival time parameter ,in They are all preset weight coefficients with preset time distance thresholds; When the arrival time parameter between the maintenance point and the independent rectangle is less than or equal to the time distance threshold, all power grid nodes in the independent rectangle are divided into the supervision range of the maintenance point. When a power grid node belongs to the supervision range of multiple maintenance points, it is divided into the supervision range of the maintenance point with the smallest arrival time parameter.

5. The power network communication equipment monitoring and early warning system according to claim 1 is characterized in that: The analysis process of the icing warning unit is as follows: Get the current time, current temperature and the lowest temperature of the day. There is a preset temperature threshold. When the current temperature is greater than or equal to the temperature threshold, substitute the current temperature, current time and the lowest temperature of the day into the formula Calculate the temperature influence value ,in represents the lowest temperature of the day, t represents the current time, Indicates the current temperature. is the preset constant factor; when the current temperature is less than the temperature threshold, the temperature influence value is 1; Get the current relative humidity , substitute into the formula Calculate the humidity impact value ,in is the preset constant coefficient; Get the average wind speed for the day , substitute into the formula Calculate the wind speed impact value ,in is a preset constant value, is the preset constant coefficient; The transmission lines between each grid node within the independent rectangular range are recorded as target transmission lines, the cross-sectional areas of each target transmission line are obtained, and the average cross-sectional area is calculated and recorded as the cross-sectional mean. , obtain the length of each target transmission line and select the maximum length as the peak length , obtain the installation height of each target transmission line and select the maximum height as the peak height , substitute into the formula Calculate the line impact value ,in is the preset constant coefficient; Line influence value , Wind speed impact value , Humidity impact value and temperature influence value After normalization, enter the formula Calculate the icing warning value ,in: is the preset weight coefficient, It is an adjustable parameter, and its value depends on the future precipitation. It obtains the precipitation in the next 12 hours. There is a preset precipitation threshold. When the precipitation is less than or equal to the precipitation threshold, The value is 0.

3. When the precipitation is greater than the precipitation threshold, The value is 0.

9.

6. A power network communication equipment monitoring and early warning system according to claim 1, characterized in that: The process of adjusting the alarm threshold by the early warning adjustment unit is as follows: Get the independent rectangle to which the monitoring device belongs, and get the arrival time parameter corresponding to the independent rectangle ; Substitute into the formula Calculate the first warning threshold ,in They are all preset constant values. For a preset first influence coefficient, compare the icing warning value with the first warning threshold value to generate an icing warning signal; Substitute into the formula Calculate the second warning threshold ,in They are all preset constant values. When the attachment parameter is compared with the second warning threshold value for the preset second influence coefficient, an icing warning signal is generated; When an icing alarm signal and an icing warning signal are generated simultaneously, the icing alarm signal is sent first.

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