Power transmission and distribution line state evaluation system

Abstract

The invention relates to the technical field of power transmission line state evaluation, and discloses a power transmission and distribution line state evaluation system, which comprises a line information input module, a data acquisition module, a data analysis module and an evaluation result output module. According to the power transmission and distribution line state evaluation system, data of a humidity correction coefficient, a wind speed correction coefficient and a temperature correction coefficient are calculated, an actual load value in a line is calculated by combining a load value of a current line with the humidity correction coefficient, the wind speed correction coefficient and the temperature correction coefficient, and the actual load value and a load threshold value are calculated. Whether the line has load abnormity is judged by combining factors of the surrounding environment, state evaluation of the power transmission line is realized, manual evaluation of the state of the power transmission line depending on the appearance of the line is avoided, and the accuracy of an evaluation result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission line status assessment, and in particular to a power transmission and distribution line status assessment system. Background Art

[0002] Transmission line assessment refers to the inspection, evaluation and analysis of transmission lines in the power system to ensure their safe and reliable operation, and to evaluate the safety of transmission lines, including the line's load-bearing capacity, wind resistance, earthquake resistance, etc., to ensure that the line can still operate normally under various extreme conditions and reduce the possibility of accidents. At present, transmission line assessment relies on manual inspection, usually to inspect the appearance of the transmission line. According to the integrity of the appearance of the transmission line, it is judged that the transmission line is in good condition, but the transmission status of the transmission line is usually affected by the surrounding environment of its location, such as wind speed, humidity, etc., which usually also affect the status of the transmission line, but these factors are not brought into the manual inspection process, which leads to large errors in the evaluation results. Summary of the invention

[0003] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a power transmission and distribution line status assessment system, which has the advantages of calculating the humidity correction coefficient, wind speed correction coefficient, and temperature correction coefficient data, and combining the load value of the current line with the humidity correction coefficient, wind speed correction coefficient, and temperature correction coefficient to calculate the actual load value in the line, and combining the actual load value with the load threshold, combined with factors of the surrounding environment, to determine whether the load of this section of the line is abnormal, thereby realizing the evaluation of the power transmission line status, avoiding manual evaluation of the power transmission line status based on the appearance of the line, thereby improving the accuracy of the evaluation results, etc., and solving the above-mentioned technical problems.

[0004] (II) Technical solution To achieve the above object, the present invention provides the following technical solutions: a power transmission and distribution line status assessment system, comprising a line information input module, a data acquisition module, a data analysis module and an assessment result output module; The line information entry module is used to segment the line, number each line segment, and generate a unique digital label for each line segment. The line number is as follows: ,..., in ,..., Indicates the segment number of the line according to the specific area where it is located. ,..., Indicates the specific sequence number of multiple lines in the same area; The data acquisition module includes a voltage and current sensing unit, a temperature sensing unit, a humidity sensing unit and a wind speed sensing unit. The voltage and current sensing unit is used to collect real-time voltage data of each line segment. and real-time current data The temperature sensing unit is used to collect real-time temperature data of each line section. The wind speed sensing unit is used to collect real-time wind speed data of each line section. The humidity sensing unit is used to collect real-time humidity data of each line section. The data acquisition module collects the voltage data , real-time current data , real-time temperature data , real-time humidity data and real-time wind speed data Send to the data analysis module through the network; The data analysis module is based on the real-time voltage data and real-time current data Calculate the load value of each line segment The data analysis module is based on the current real-time temperature data Calculating the Temperature Correction Factor The data analysis module is based on the current real-time wind speed data Calculating wind speed correction factor The data analysis module is based on the current real-time humidity data Calculating the Humidity Correction Factor , the data analysis module will calculate the load value Combined with real-time wind speed data , Humidity correction factor and wind speed correction factor Calculate the actual load value of the line The data analysis module converts the actual load value With its internally stored load threshold In contrast, when the actual load value Greater than the load threshold If it is determined that the line is overloaded, the data analysis module sends the digital label of the line where the load appears to the evaluation result output module through the network; The evaluation result output module displays the digital labels of the lines where the load occurs.

[0005] As a preferred technical solution of the present invention, the load value The algorithm formula is as follows: In the formula, Indicates the real-time voltage data in each line segment and real-time current data The phase difference angle between The value is related to the resistance in the circuit. The resistance value of the circuit itself is a fixed value. Therefore, The value is a fixed value. is a fixed value, real-time voltage data and real-time current data The phase difference angle between them is multiplied by The value is used to obtain the line load value that is not affected by the surrounding environment. .

[0006] As a preferred technical solution of the present invention, the data analysis module calculates the line load value Temporarily stored in the storage medium set inside it.

[0007] As a preferred technical solution of the present invention, the temperature correction coefficient The algorithm formula is as follows: In the formula, Indicates the resistance value of the circuit at the current temperature, and this value changes with the temperature. This value is related to the circuit material. It indicates the resistance value of the circuit at the reference temperature. The reference temperature is the base temperature used when calibrating the circuit.

[0008] As a preferred technical solution of the present invention, the data analysis module temporarily stores the calculated temperature correction coefficient in a storage medium provided therein.

[0009] As a preferred technical solution of the present invention, the wind speed correction coefficient The algorithm formula is as follows: In the formula, It indicates the resistance value of the line under the reference wind speed. The reference wind speed is the benchmark wind speed used when calibrating the circuit.

[0010] As a preferred technical solution of the present invention, the data analysis module calculates the wind speed correction coefficient Temporarily stored in the storage medium set inside it.

[0011] As a preferred technical solution of the present invention, the humidity correction coefficient The algorithm formula is as follows: In the formula, It indicates the resistance value of the circuit under reference humidity. The reference humidity is the benchmark humidity used when calibrating the circuit.

[0012] As a preferred technical solution of the present invention, the data analysis module calculates the humidity correction coefficient Temporarily stored in the storage medium set inside it.

[0013] As a preferred technical solution of the present invention, the actual load value The algorithm formula is as follows: In the formula, the actual load value Multiply by the humidity correction factor , Wind speed correction factor , Temperature correction factor , load value Get the final actual load value ; The data analysis module converts the actual load value With load threshold In contrast, when the actual load value Greater than the load threshold When , it is determined that the line section is overloaded, and the digital label of the line section is sent to the evaluation result output module through the network.

[0014] Compared with the prior art, the present invention provides a power transmission and distribution line status assessment system, which has the following beneficial effects: 1. The present invention calculates the humidity correction coefficient, wind speed correction coefficient, and temperature correction coefficient data, and combines the load value of the current line with the humidity correction coefficient, wind speed correction coefficient, and temperature correction coefficient to calculate the actual load value in the line, and combines the actual load value with the load threshold, combined with factors of the surrounding environment, to determine whether the load of this section of the line is abnormal, thereby realizing the evaluation of the state of the transmission line, avoiding manual evaluation of the state of the transmission line based on the appearance of the line, and thus improving the accuracy of the evaluation result. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention. DETAILED DESCRIPTION

[0016] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] In order to avoid the phenomenon that the state of the transmission line cannot be comprehensively judged by the surrounding environmental factors, resulting in large errors in the evaluation results, a transmission and distribution line state evaluation system is proposed. Figure 1 ,The system includes a line information input module, a data acquisition module, a data analysis module and an evaluation result output module, wherein; The line information entry module is used to segment the line and number each line segment, generating a unique digital label for each line segment. The line number is as follows: ,..., in ,..., Indicates the segment number of the line according to the specific area where it is located. ,..., Indicates the specific sequence number of multiple lines in the same area. By dividing the entire line into multiple sections and assigning each section a unique number, when one or more sections of the line are abnormal, the line with the abnormal value can be quickly identified based on the unique section number; The data acquisition module includes a voltage and current sensing unit, a temperature sensing unit, a humidity sensing unit, and a wind speed sensing unit. The voltage and current sensing unit is used to collect real-time voltage data of each line section. and real-time current data The temperature sensing unit is used to collect real-time temperature data of each line section. , the wind speed sensor unit is used to collect real-time wind speed data for each section of the line , humidity sensing unit is used to collect real-time humidity data of each line The data acquisition module collects the voltage data , real-time current data , real-time temperature data , real-time humidity data and real-time wind speed data Send to the data analysis module through the network; The data analysis module is based on real-time voltage data and real-time current data Calculate the load value of each line segment The data analysis module is based on the current real-time temperature data Calculating the Temperature Correction Factor The data analysis module is based on the current real-time wind speed data Calculating wind speed correction factor The data analysis module is based on the current real-time humidity data Calculating the Humidity Correction Factor , the data analysis module will calculate the load value Combined with real-time wind speed data , humidity correction factor and wind speed correction factor Calculate the actual load value of the line , where the above-mentioned relevant algorithms are as follows: Load value The algorithm formula is as follows: In the formula, Indicates the real-time voltage data in each line segment and real-time current data The phase difference angle between The value is related to the resistance in the circuit. The resistance value of the circuit itself is a fixed value. Therefore, The value is a fixed value. is a fixed value, real-time voltage data and real-time current data The phase difference angle between them is multiplied by The value is used to obtain the line load value that is not affected by the surrounding environment. ; When the data analysis module calculates the load value After that, it is temporarily stored in the storage medium in the data analysis module, waiting for subsequent calculation; Temperature correction factor The algorithm formula is as follows: In the formula, Indicates the resistance value of the circuit at the current temperature, and this value changes with the temperature. This value is related to the circuit material. Indicates the resistance value of the circuit at the reference temperature. The reference temperature is the base temperature used when calibrating the circuit. When the data analysis module calculates the temperature correction coefficient After that, it is temporarily stored in the storage medium in the data analysis module, waiting for subsequent calculation; Wind speed correction factor The algorithm formula is as follows: In the formula, Indicates the resistance value of the line under the reference wind speed. The reference wind speed is the benchmark wind speed used when calibrating the circuit. When the data analysis module calculates the wind speed correction factor After that, it is temporarily stored in the storage medium in the data analysis module and waits for subsequent calculation; Humidity correction factor The algorithm formula is as follows: In the formula, Indicates the resistance value of the circuit under reference humidity. The reference humidity is the base humidity used when calibrating the circuit. When the data analysis module calculates the humidity correction factor After that, it is temporarily stored in the storage medium in the data analysis module and waits for subsequent calculation; When the data analysis module calculates the humidity correction factor , Wind speed correction factor , Temperature correction factor , load value After that, the actual load value of the line is calculated by using the following algorithm. ; Actual load value The algorithm formula is as follows: Through the actual load value Multiply by the humidity correction factor , Wind speed correction factor , Temperature correction factor , load value Get the actual load value of the line ; When the data analysis module calculates the actual load value of the line After that, the data analysis module will calculate the actual load value With load threshold In contrast, when the actual load value Greater than the load threshold When the load is abnormal, it is determined that the line section is overloaded, and the digital label of the line section is sent to the evaluation result output module through the network. After the evaluation result output module receives the digital label of the line with abnormal load, the evaluation result output module displays the digital label of the abnormal line to the operation and maintenance personnel through its display end. The operation and maintenance personnel quickly determine the location of the abnormal line according to the digital label and carry out maintenance on it.

[0020] By calculating the humidity correction factor , Wind speed correction factor , Temperature correction factor data, and the current line load value Combination correction factor , Wind speed correction factor , Temperature correction factor Calculate the actual load value in the line , and the actual load value With load threshold , combined with the factors of the surrounding environment, it is judged whether the load of this section of the line is abnormal, and the status of the transmission line is evaluated, avoiding manual evaluation of the status of the transmission line based on the appearance of the line, thereby improving the accuracy of the evaluation results.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power transmission and distribution line status assessment system, characterized in that: It includes line information input module, data acquisition module, data analysis module and evaluation result output module; The line information entry module is used to segment the line, number each line segment, and generate a unique digital label for each line segment. The line number is as follows: ,..., in ,..., Indicates the segment number of the line according to the specific area where it is located. ,..., Indicates the specific sequence number of multiple lines in the same area; The data acquisition module includes a voltage and current sensing unit, a temperature sensing unit, a humidity sensing unit and a wind speed sensing unit. The voltage and current sensing unit is used to collect real-time voltage data of each line segment. and real-time current data The temperature sensing unit is used to collect real-time temperature data of each line section. The wind speed sensing unit is used to collect real-time wind speed data of each line section. The humidity sensing unit is used to collect real-time humidity data of each line section. The data acquisition module collects the voltage data , real-time current data , real-time temperature data , real-time humidity data and real-time wind speed data Send to the data analysis module through the network; The data analysis module is based on the real-time voltage data and real-time current data Calculate the load value of each line segment The data analysis module is based on the current real-time temperature data Calculating the Temperature Correction Factor The data analysis module is based on the current real-time wind speed data Calculating wind speed correction factor The data analysis module is based on the current real-time humidity data Calculating the Humidity Correction Factor , the data analysis module will calculate the load value Combined with real-time wind speed data , humidity correction factor and wind speed correction factor Calculate the actual load value of the line The data analysis module converts the actual load value With its internally stored load threshold In contrast, when the actual load value Greater than the load threshold If it is determined that the line is overloaded, the data analysis module sends the digital label of the line where the load appears to the evaluation result output module through the network; The evaluation result output module displays the digital label of the line where the load occurs.

2. A power transmission and distribution line status assessment system according to claim 1, characterized in that: The load value The algorithm formula is as follows: In the formula, Indicates the real-time voltage data in each line segment and real-time current data The phase difference angle between The value is related to the resistance in the circuit. The resistance value of the circuit itself is a fixed value. Therefore, The value is a fixed value. is a fixed value, real-time voltage data and real-time current data The phase difference angle between them is multiplied by The value is used to obtain the line load value that is not affected by the surrounding environment. .

3. A power transmission and distribution line status assessment system according to claim 2, characterized in that: The data analysis module calculates the line load value Temporarily stored in the storage medium set inside it.

4. A power transmission and distribution line status assessment system according to claim 1, characterized in that: The temperature correction factor The algorithm formula is as follows: In the formula, Indicates the resistance value of the circuit at the current temperature, and this value changes with the temperature. This value is related to the circuit material. It indicates the resistance value of the circuit at the reference temperature. The reference temperature is the base temperature used when calibrating the circuit.

5. A power transmission and distribution line status assessment system according to claim 4, characterized in that: The data analysis module calculates the temperature correction coefficient Temporarily stored in the storage medium set inside it.

6. A power transmission and distribution line status assessment system according to claim 1, characterized in that: The wind speed correction factor The algorithm formula is as follows: In the formula, It indicates the resistance value of the line under the reference wind speed. The reference wind speed is the benchmark wind speed used when calibrating the circuit.

7. A power transmission and distribution line status assessment system according to claim 6, characterized in that: The data analysis module calculates the wind speed correction factor Temporarily stored in the storage medium set inside it.

8. A power transmission and distribution line status assessment system according to claim 7, characterized in that: The humidity correction factor The algorithm formula is as follows: In the formula, It indicates the resistance value of the circuit under reference humidity. The reference humidity is the benchmark humidity used when calibrating the circuit.

9. A power transmission and distribution line status assessment system according to claim 8, characterized in that: The data analysis module calculates the humidity correction factor Temporarily stored in the storage medium set inside it.

10. A power transmission and distribution line status assessment system according to claims 3, 5, 7 and 9, characterized in that: The actual load value The algorithm formula is as follows: In the formula, the actual load value Multiply by the humidity correction factor , Wind speed correction factor , Temperature correction factor , load value Get the final actual load value ; The data analysis module converts the actual load value With load threshold In contrast, when the actual load value Greater than the load threshold When , it is determined that the line section is overloaded, and the digital label of the line section is sent to the evaluation result output module through the network.

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