Intelligent operation and maintenance management platform for current collection line

Abstract

The invention relates to the technical field of current collection lines, and discloses a current collection line intelligent operation and maintenance management platform which comprises a system module assembly, the system module assembly comprises a positioning module, a data acquisition module, a processing module, a data analysis module, a database and an encryption module, and the positioning module comprises a decomposition module and a traveling wave module. The decomposition module decomposes a current collection circuit into a plurality of short-distance intervals, then a fault interval is determined firstly, then fault points in the interval are positioned through the traveling wave module, the data acquisition module acquires fault traveling waves, and the data acquisition module is connected with the processing module. The method improves the reliability and accuracy of positioning, reduces the influence of wave velocity, waveform attenuation and interference signals on the positioning precision, achieves high-precision positioning, guides operation and maintenance personnel to patrol, shortens the time for finding and repairing faults, guarantees the timely recovery of power supply, and improves the operation and maintenance level of the current collection line of the wind field.

Description

Technical Field

[0001] The present invention relates to the technical field of power collection lines, and in particular to an intelligent operation and maintenance management platform for power collection lines. Background Art

[0002] Wind power generation refers to the conversion of wind's kinetic energy into electrical energy. Using wind power to generate electricity is very environmentally friendly and has huge wind energy reserves, so it is increasingly valued by countries around the world.

[0003] The collection lines of wind farms are generally overhead lines. The lines are long, and hidden dangers and faults are difficult to find. The task of fault line inspection is arduous, and there is no advanced intelligent technical means to assist in the formulation of collection line fault inspection strategies to improve fault inspection efficiency.

[0004] In addition, the collector line is very susceptible to tripping accidents caused by various natural factors such as lightning, dirt, plants and animals, wind, external force damage, etc. Each tripping fault not only brings impact to the wind farm power network, but also damages insulators, wires and other facilities, leaving safety hazards for system operation. If the fault cannot be quickly eliminated, a large amount of wind turbine power will not be able to be sent out, causing direct losses to the power production of the wind farm. Therefore, an intelligent operation and maintenance management platform for collector lines is proposed. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides an intelligent operation and maintenance management platform for collector lines, which can achieve high-precision positioning, guide operation and maintenance personnel to patrol the lines, shorten the time for finding and repairing faults, ensure timely restoration of power supply, and improve the operation and maintenance level of wind farm collector lines.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A collection line intelligent operation and maintenance management platform includes a system module assembly, the system module assembly includes a positioning module, a data acquisition module, a processing module, a data analysis module, a database, and an encryption module. The positioning module includes a decomposition module and a traveling wave module. The decomposition module decomposes the collection line into multiple short-distance intervals, and then first determines the fault interval, and then locates the fault point in the interval through the traveling wave module. The data acquisition module collects fault traveling waves, and the data acquisition module is connected to the processing module, the processing module is connected to the data analysis module, and the data analysis module is connected to the database. The data analysis module compares and analyzes the collected fault traveling waves with the big data stored in the database, and the encryption module supports home security encryption chips.

[0010] Furthermore, the traveling wave module adopts a double-end traveling wave positioning technology. The traveling wave pulse propagates from the fault point K along the wire to both ends. When the traveling wave reaches the monitoring terminals M and N, the time is TM and TN respectively. The propagation speed of the traveling wave in the wire is V. Then:

[0011] The distance between the fault point K and the monitoring terminal M is: LMK = (LMN + (TM-TN) × V) / 2

[0012] The distance between the fault point K and the monitoring terminal N is: LNK = (LMN-(TM-TN)×V) / 2.

[0013] On the basis of the above-mentioned solution, the processing module is connected to the data acquisition module, and the processing module filters the data collected by the data acquisition module to remove the fault traveling waves that obviously deviate from the index.

[0014] As a further solution of the present invention, the database records each collected fault traveling wave and its corresponding fault property after processing the collector line fault each time.

[0015] Furthermore, the system module assembly includes a lightning protection module, which is connected to a database. The database records lightning strike events on the transmission line, establishes a large database, and draws the lightning strike area of ​​the line.

[0016] On the basis of the above solution, the data acquisition module includes a plurality of current sensors, and the frequency of current sampling is 2 MHz to 10 MHz.

[0017] Furthermore, the system module assembly includes a transmission module, which adopts 3G / 4G wireless transmission and can select an operator according to on-site conditions.

[0018] The beneficial effects of the present invention are:

[0019] 1. In the present invention, the reliability and accuracy of positioning are improved, the influence of wave speed, waveform attenuation and interference signals on positioning accuracy is reduced, high-precision positioning is achieved, operation and maintenance personnel are guided to patrol the lines, the time for finding and repairing faults is shortened, power supply is restored in time, and the operation and maintenance level of wind farm collection lines is improved.

[0020] 2. In the present invention, the collected fault traveling waves are compared and analyzed with the big data stored in the database, and the nature of the fault is identified and the cause of the fault is diagnosed for different types of line faults, providing technical guidance for operation and maintenance personnel to deal with the fault on site.

[0021] 3. In the present invention, the data collected by the data collection module is filtered to remove the fault traveling waves that obviously deviate from the index, thereby preventing the occurrence of misjudgment and improving the authenticity of the collected data.

[0022] 4. In the present invention, lightning strike events on transmission lines are recorded in a database, a large database is established, and the lightning strike area of ​​the line is mapped, thereby scientifically guiding differentiated lightning protection reconstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the system framework structure of an intelligent operation and maintenance management platform for collector lines proposed in the present invention.

[0024] Figure 2 This is a schematic diagram of the double-terminal traveling wave positioning principle of the intelligent operation and maintenance management platform for collector lines proposed in the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0026] Example 1

[0027] Reference Figure 1-2 , an intelligent operation and maintenance management platform for a collector line, including a system module assembly, the system module assembly includes a positioning module, a data acquisition module, a processing module, a data analysis module, a database, and an encryption module. The positioning module includes a decomposition module and a traveling wave module. The decomposition module decomposes the collector line into multiple short-distance intervals, and then first determines the fault interval, and then locates the fault point in the interval through the traveling wave module, thereby improving the reliability and accuracy of positioning, reducing the influence of wave speed, waveform attenuation and interference signals on positioning accuracy, achieving high-precision positioning, guiding operation and maintenance personnel to patrol the line, shortening the time for finding and repairing faults, ensuring timely restoration of power supply, and improving the operation and maintenance level of wind farm collector lines. The data acquisition module collects fault traveling waves, and the data acquisition module is connected to the processing module, the processing module is connected to the data analysis module, and the data analysis module is connected to the database. The data analysis module compares and analyzes the collected fault traveling waves with the big data stored in the database, identifies the nature of the fault, diagnoses the cause of the fault, and provides technical guidance for operation and maintenance personnel to deal with the fault on site. The encryption module supports home improvement security encryption chips.

[0028] In the present invention, the traveling wave module adopts the double-end traveling wave positioning technology. The traveling wave pulse propagates from the fault point K along the wire to both ends. When the traveling wave reaches the monitoring terminals M and N, the time is TM and TN respectively. The propagation speed of the traveling wave in the wire is V. Then:

[0029] The distance between the fault point K and the monitoring terminal M is: LMK = (LMN + (TM-TN) × V) / 2

[0030] The distance between the fault point K and the monitoring terminal N is: LNK = (LMN-(TM-TN) × V) / 2;

[0031] The processing module is connected to the data acquisition module, and the processing module filters the data collected by the data acquisition module to remove the fault traveling waves that obviously deviate from the index, prevent misjudgment, and improve the authenticity of the collected data. After each collection line fault is processed, the database records each collected fault traveling wave and its corresponding fault nature, so that comparison can be carried out with confidence.

[0032] Example 2

[0033] Reference Figure 1-2 , an intelligent operation and maintenance management platform for a collector line, including a system module assembly, the system module assembly includes a positioning module, a data acquisition module, a processing module, a data analysis module, a database, and an encryption module. The positioning module includes a decomposition module and a traveling wave module. The decomposition module decomposes the collector line into multiple short-distance intervals, and then first determines the fault interval, and then locates the fault point in the interval through the traveling wave module, thereby improving the reliability and accuracy of positioning, reducing the influence of wave speed, waveform attenuation and interference signals on positioning accuracy, achieving high-precision positioning, guiding operation and maintenance personnel to patrol the line, shortening the time for finding and repairing faults, ensuring timely restoration of power supply, and improving the operation and maintenance level of wind farm collector lines. The data acquisition module collects fault traveling waves, and the data acquisition module is connected to the processing module, the processing module is connected to the data analysis module, and the data analysis module is connected to the database. The data analysis module compares and analyzes the collected fault traveling waves with the big data stored in the database, identifies the nature of the fault, diagnoses the cause of the fault, and provides technical guidance for operation and maintenance personnel to deal with the fault on site. The encryption module supports home improvement security encryption chips.

[0034] In the present invention, the traveling wave module adopts the double-end traveling wave positioning technology. The traveling wave pulse propagates from the fault point K along the wire to both ends. When the traveling wave reaches the monitoring terminals M and N, the time is TM and TN respectively. The propagation speed of the traveling wave in the wire is V. Then:

[0035] The distance between the fault point K and the monitoring terminal M is: LMK = (LMN + (TM-TN) × V) / 2

[0036] The distance between the fault point K and the monitoring terminal N is: LNK = (LMN-(TM-TN) × V) / 2;

[0037] The processing module is connected to the data acquisition module, and the processing module filters the data collected by the data acquisition module to remove the fault traveling waves that obviously deviate from the index, prevent misjudgment, and improve the authenticity of the collected data. After each collection line fault is processed, the database records each collected fault traveling wave and its corresponding fault nature, so that comparison can be carried out with confidence.

[0038] In particular, the system module assembly includes a lightning protection module, which is connected to the database. The database records lightning strikes on the transmission line, establishes a large database, and draws the lightning strike area of ​​the line, so as to scientifically guide differentiated lightning protection transformation. The data acquisition module includes multiple current sensors, and the current sampling frequency is 5MHz. The system module assembly includes a transmission module, which adopts 4G wireless transmission and can select operators according to on-site conditions.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent operation and maintenance management platform for a collection line, comprising a system module assembly, characterized in that: The system module assembly includes a positioning module, a data acquisition module, a processing module, a data analysis module, a database, and an encryption module. The positioning module includes a decomposition module and a traveling wave module. The decomposition module decomposes the collector line into multiple short-distance intervals, and then determines the fault interval first, and then locates the fault point in the interval through the traveling wave module. The data acquisition module collects fault traveling waves, and the data acquisition module is connected to the processing module, the processing module is connected to the data analysis module, and the data analysis module is connected to the database. The data analysis module compares and analyzes the collected fault traveling waves with the big data stored in the database, and the encryption module supports home security encryption chips.

2. The intelligent operation and maintenance management platform for collector lines according to claim 1, characterized in that: The traveling wave module adopts the double-end traveling wave positioning technology. The traveling wave pulse propagates from the fault point K along the wire to both ends. When the traveling wave reaches the monitoring terminals M and N, the time is TM and TN respectively. The propagation speed of the traveling wave in the wire is V, then: The distance between the fault point K and the monitoring terminal M is: LMK = (LMN + (TM-TN) × V) / 2 The distance between the fault point K and the monitoring terminal N is: LNK = (LMN-(TM-TN)×V) / 2.

3. The intelligent operation and maintenance management platform for collector lines according to claim 2, characterized in that: The processing module is connected to the data acquisition module, and the processing module filters the data collected by the data acquisition module to remove the fault traveling waves that obviously deviate from the index.

4. The intelligent operation and maintenance management platform for collector lines according to claim 3, characterized in that: After each processing of the collector line fault, the database records each collected fault traveling wave and its corresponding fault property.

5. The intelligent operation and maintenance management platform for collector lines according to claim 1, characterized in that: The system module assembly includes a lightning protection module, which is connected to a database. The database records lightning strike events on the transmission line, establishes a large database, and draws the lightning strike area of ​​the line.

6. The intelligent operation and maintenance management platform for collector lines according to claim 5, characterized in that: The data acquisition module includes a plurality of current sensors, and the frequency of current sampling is 2 MHz to 10 MHz.

7. The intelligent operation and maintenance management platform for collector lines according to claim 6, characterized in that: The system module assembly includes a transmission module, which adopts 3G / 4G wireless transmission and can select an operator according to the on-site conditions.

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