Distribution network overhead line galloping and disconnection diagnosis alarm device

Abstract

The utility model relates to a distribution network overhead line galloping and line breaking diagnosis alarm device, which comprises an attitude sensor, a pressure height sensor, a control module, a power supply module, a power supply module, a power supply module, a power supply module, a power supply module and an alarm module, and is characterized in that the attitude sensor is used for acquiring angle data and axial acceleration data of an overhead line; the reference data output module is used for outputting reference data according to the angle data, the axial acceleration data and the sag height data, and the state judgment module is used for judging whether the overhead line is galloped and / or broken or not according to the reference data and outputting detection data. According to the utility model, the detection precision of galloping and disconnection diagnosis of the overhead line is improved, and false alarm is avoided. The containing box is used for containing the data sensing module, the control module and the state judgment module, the two ends of the two torsion springs are connected with the first connecting rod and the second connecting rod respectively, and the first connecting rod and the second connecting rod intersect with each other to form a space capable of containing the distribution network overhead line. And the accommodating box can be tightly hung on the overhead line.

Description

Technical Field

[0001] The utility model relates to the technical field of fault detection of distribution network overhead lines, and specifically relates to a dancing and breaking diagnosis and alarm device for distribution network overhead lines. Background Technique

[0002] Overhead lines refer to transmission lines erected through high-rises or power poles, which are usually used to transmit electric power from power generation stations to substations or end-users. With the rapid development of China's economic construction, the power load has increased rapidly. During the operation of long-distance and large-scale overhead lines with wide geographical distribution, complex climate and terrain conditions, various disaster accidents will occur due to the action of natural conditions. Among them, the breaking of overhead lines is one of the most serious accidents. Once an overhead line breaks, alarm data needs to be sent to the power department immediately so that it can arrange the repair of power equipment and energy allocation work in an orderly manner.

[0003] At present, video monitoring methods or sensor measurement methods are mainly used for detecting the dancing or breaking of overhead lines. The video monitoring method has a high use cost and is greatly affected by weather; the sensor measurement method usually uses technologies such as magnetic field sensors, tension measurement sensors or inertial sensors to achieve, but different types of sensors have different installation positions and different data types, which are difficult to fuse and apply. Therefore, usually only one sensor is used for detection, which will lead to poor detection accuracy and the risk of false alarms. Content of the Utility Model

[0004] In order to solve the problem of the poor detection accuracy of the existing diagnostic device, the utility model provides a dancing and breaking diagnosis and alarm device for distribution network overhead lines, which improves the monitoring accuracy of the dancing and breaking of overhead lines.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a dancing and breaking diagnosis and alarm device for distribution network overhead lines, including:

[0006] A data perception module, including an attitude sensor and a barometric altitude sensor. The attitude sensor is used to obtain the angular data and axial acceleration data of the overhead line, and the barometric altitude sensor is used to obtain the sag height data of the overhead line;

[0007] A control module, which is used to output reference data according to the angular data, axial acceleration data and sag height data;

[0008] A state judgment module, which is used to judge whether the overhead line is dancing and / or broken according to the reference data and output detection data;

[0009] The installation mechanism includes a containment box and two torsion springs. The containment box is used to accommodate the data sensing module, the control module, and the status judgment module. The two torsion springs are distributed along the length direction of the distribution network overhead line. One end of each torsion spring is connected to a first connecting rod and a second connecting rod respectively. A first connecting rod and a second connecting rod intersect with each other to form a space capable of accommodating the distribution network overhead line.

[0010] As a further optimization of a dancing and breaking diagnosis and alarm device for a distribution network overhead line of the utility model: The containment box includes an upper box body and a lower box body that are detachably connected. Both of the two torsion springs are fixedly connected to the upper box body. The data sensing module, the control module, and the status judgment module are all arranged in the lower box body.

[0011] As a further optimization of a dancing and breaking diagnosis and alarm device for a distribution network overhead line of the utility model: Two mounting plates distributed along the length direction of the distribution network overhead line are arranged on the top of the upper box body. The two torsion springs are arranged on the mounting plates in a one-to-one correspondence.

[0012] As a further optimization of a dancing and breaking diagnosis and alarm device for a distribution network overhead line of the utility model: Rubber sleeves are sleeved on all the first connecting rods and all the second connecting rods.

[0013] As a further optimization of a dancing and breaking diagnosis and alarm device for a distribution network overhead line of the utility model: The two first connecting rods are connected by a first connecting shaft, and the two second connecting rods are connected by a second connecting shaft.

[0014] As a further optimization of a dancing and breaking diagnosis and alarm device for a distribution network overhead line of the utility model: The diagnosis and alarm device further includes a communication and early warning module, and the communication and early warning module is used to transmit the detection data to the server and send an alarm message.

[0015] As a further optimization of a dancing and breaking diagnosis and alarm device for a distribution network overhead line of the utility model: The data sensing module includes a clock data sub-module, and the clock data sub-module is used to output time data.

[0016] As a further optimization of a dancing and breaking diagnosis and alarm device for a distribution network overhead line of the utility model: The diagnosis and alarm device further includes a data reading and conditioning module, and the data reading and conditioning module is used to add time stamps to the angle data, the axial acceleration data, the sag height data, and the detection data.

[0017] As a further optimization of a dancing and breaking diagnosis and alarm device for a distribution network overhead line of the utility model: The diagnosis and alarm device further includes a power supply module, and the power supply module is used to supply power to the data sensing module, the control module, and the status judgment module.

[0018] Beneficial effects: The attitude sensor of the present utility model is used to obtain the angle data and axial acceleration data of the overhead line, and the barometric altitude sensor is used to obtain the sag height data of the overhead line; the control module is used to output reference data according to the angle data, axial acceleration data and sag height data; the state judgment module is used to judge whether the overhead line is dancing and / or broken according to the reference data and output detection data; the present utility model improves the detection accuracy of the dancing and broken wire diagnosis of the overhead line and avoids false alarms.

[0019] The accommodation box of the present utility model is used to accommodate the data sensing module, the control module and the state judgment module. Two torsion springs are distributed along the length direction of the distribution network overhead line. One end of each torsion spring is connected with a first connecting rod and a second connecting rod respectively. A first connecting rod and a second connecting rod intersect with each other to form a space capable of accommodating the distribution network overhead line, ensuring that the accommodation box can be tightly hung on the overhead line. Description of the Drawings

[0020] Figure 1 is the installation schematic diagram of the present utility model;

[0021] Figure 2 is the structural schematic diagram of the present utility model;

[0022] Figure 3 is the module diagram of the present utility model;

[0023] Figure 4 is the alarm flow chart of the present utility model;

[0024] Markings in the figure: 1, overhead line; 2, torsion spring; 3, first connecting rod; 4, second connecting rod; 5, space; 6, upper box body; 7, lower box body; 8, mounting plate; 9, rubber sleeve; 10, first connecting shaft; 11, second connecting shaft; 12, accommodation box. Detailed Embodiments

[0025] The following further elaborates on the technical solutions of the present utility model in combination with specific embodiments. For parts that are not detailedly recorded and disclosed in the following embodiments of the present utility model, they should all be understood as the prior art known or should be known to those skilled in the art, such as the structure of the overhead line 1 and the model of the torsion spring 2.

[0026] Embodiment 1

[0027] The above is the basic implementation manner of the present utility model. Further improvements, optimizations and limitations can be made on this basis to obtain the following embodiments:

[0028] A device for diagnosing and alarming the dancing and broken wires of a distribution network overhead line 1, as Figures 1-4As shown in the figure, it includes:

[0029] The data perception module includes an attitude sensor and a barometric altitude sensor. The attitude sensor is used to obtain the angle data and axial acceleration data of the overhead line 1. The attitude sensor selects the MPU9250 sensor to obtain three-axis acceleration, three-axis geomagnetic field data, and three-axis angle data. Other types of attitude sensors with similar parameters can be used to replace the attitude sensor. The barometric altitude sensor is used to obtain the sag height data of the overhead line 1. The barometric altitude sensor uses the LPS35HW barometric sensor;

[0030] The control module is represented by the MCU core control module in the figure. The control module uses a low-power single-chip microcomputer of the STM32 series, and its working state is intermittent operation, with timed sleep and entering the working cycle after startup. Other types of low-power single-chip microcomputers can be used to implement the control module. The control module is used to output reference data according to the angle data, axial acceleration data, and sag height data. Specifically: the control module reads the angle data, axial acceleration data, and sag height data, and performs edge computing to obtain the real-time state of the wire. It calculates the axial acceleration of the overhead line 1 based on the acceleration data of the attitude sensor, judges the galloping state of the overhead line 1 based on the three-axis angle data of the attitude sensor, and calculates the sag height of the overhead line 1 based on the barometric data. The state judgment module is used to judge whether the overhead line 1 is galloping and / or broken according to the reference data and output the detection data;

[0031] The installation mechanism includes a receiving box 12 and two torsion springs 2. The receiving box 12 is used to accommodate the data perception module, the control module, and the state judgment module. The two torsion springs 2 are distributed along the length direction of the distribution network overhead line 1. One end of each torsion spring 2 is connected to a first connecting rod 3 and a second connecting rod 4 respectively. A first connecting rod 3 and a second connecting rod 4 intersect with each other to form a space 5 that can accommodate the distribution network overhead line 1. Both of the two first connecting rods 3 are close to the edge of the receiving box 12, and both the first connecting rod 3 and the second connecting rod 4 are curved in an arc shape. The torsion spring 2 can make the space 5 formed by the intersection of the first connecting rod 3 and the second connecting rod 4 more stable, ensuring that it is tightly suspended on the overhead line 1.

[0032] The alarm process of the present utility model is as Figure 2 shown. First, the main program is initialized, including program parameter definition, master crystal oscillator initialization, sensor acquisition interface configuration initialization, etc. The angle data, axial acceleration data, and sag height data of the overhead line 1 are obtained through data parsing, and the axial acceleration data of the overhead line 1, the galloping angle of the overhead line 1, and the sag height data of the overhead line 1 are sent to the server. Then, according to the judgment logic, it diagnoses whether the overhead line 1 is broken based on the axial acceleration data and sag height data of the overhead line 1 respectively, and diagnoses the galloping level of the overhead line 1 based on the galloping angle of the overhead line 1.

[0033] The utility model classifies the galloping of the overhead line 1 into 1-5 levels according to different galloping degrees. The higher the level, the greater the galloping degree. The angle data output by the attitude sensor is converted into the "north-east-up coordinate system" through three-dimensional coordinate conversion calculation. If the angle of the z-axis changes less than 2° within 0.1 s, it is determined that the overhead line 1 has no galloping; if the angle of the z-axis changes within 2-5° within 0.1 s, it is determined that the galloping of the overhead line 1 is at level 1; if the angle of the z-axis changes within 5-10° within 0.1 s, it is determined that the galloping of the overhead line 1 is at level 2; if the angle of the z-axis changes within 10-15° within 0.1 s, it is determined that the galloping of the overhead line 1 is at level 3; if the angle of the z-axis changes within 15-20° within 0.1 s, it is determined that the galloping of the overhead line 1 is at level 4; if the angle of the z-axis changes more than 20° within 0.1 s, it is determined that the galloping of the overhead line 1 is at level 5.

[0034] The utility model adopts different diagnostic criteria for the overhead line 1 based on the axial acceleration data, angle data and sag height data of the overhead line 1 respectively to diagnose whether the overhead line 1 is broken. As long as one diagnostic criterion gives the diagnosis result of the overhead line 1 being broken, an early warning of the overhead line 1 being broken is issued. There are three diagnostic criteria in total: 1) Whether the axial instantaneous acceleration of the transmission line is greater than 2g. If it is greater than 2g, it is determined that the overhead line 1 is broken, otherwise it is determined that there is no break. 2) In the "north-east-up coordinate system" of the attitude sensor, if the angle of the z-axis changes 30° within 0.1 s, it is determined that the overhead line 1 is broken, otherwise it is determined that there is no break. 3) Whether the change in the sag height of the overhead line 1 is greater than 4 m within 1 s. If it is greater than 4 m, it is determined that the overhead line 1 is broken, otherwise it is determined that there is no break.

[0035] Embodiment 2

[0036] This embodiment is an improved scheme based on Embodiment 1. Its main structure is the same as that of Embodiment 1. The improvement lies in that the accommodation box 12 includes a detachable upper box body 6 and a lower box body 7. Both torsion springs 2 are fixedly connected to the upper box body 6. The data sensing module, the control module and the state judgment module are all arranged in the lower box body 7. Two mounting plates 8 distributed along the length direction of the distribution network overhead line 1 are arranged at the top of the upper box body 6. The two torsion springs 2 are arranged on the mounting plates 8 one by one. The outside of the lower box body 7 is wrapped with a flexible photovoltaic panel to achieve the purpose of not easily damaging the lower box body 7.

[0037] Embodiment 3

[0038] This embodiment is an improved solution based on Embodiment 1. Its main structure is the same as that of Embodiment 1, and the improvement lies in that: rubber sleeves 9 are sleeved on all the first connecting rods 3 and all the second connecting rods 4. The rubber sleeves 9 attached to the connecting rods play the roles of insulation and shock absorption. The two first connecting rods 3 are connected by a first connecting shaft 10, and the two second connecting rods 4 are connected by a second connecting shaft 11.

[0039] Embodiment 4

[0040] This embodiment is an improved solution based on Embodiment 1. Its main structure is the same as that of Embodiment 1, and the improvement lies in that: the diagnostic alarm device further includes a communication and early warning module, and the communication and early warning module is used to transmit the detection data to the server and send alarm information. The control module makes a comparison based on the three-axis angle data and historical angle data of the attitude sensor, and diagnoses the galloping state of the overhead line 1 according to the galloping judgment criterion. Based on the axial acceleration and sag height data of the overhead line 1, different diagnostic criteria for the overhead line 1 are respectively adopted to diagnose whether the overhead line 1 is broken. Only one diagnostic criterion is required to make the diagnostic result of the overhead line 1 being broken to control the early warning sub-module in the communication and early warning module. The communication sub-module in the communication and early warning module adopts the encrypted SIM card mode to transmit the detection data of this device to the designated server, and sends a line break alarm text message to a specific mobile phone number when it detects that the overhead line 1 is broken. This design can ensure that users can receive relevant alarms at any time and anywhere. Multiple phone numbers for receiving alarm information can also be set in this module to ensure that there is a second option when the alarm information cannot be accurately conveyed to the first user.

[0041] Embodiment 5

[0042] This embodiment is an improved solution based on Embodiment 1. Its main structure is the same as that of Embodiment 1, and the improvement lies in that: the data sensing module includes a clock data sub-module, and the clock data sub-module is used to output time data. The clock data sub-module adopts a DS1307 clock module.

[0043] Embodiment 6

[0044] This embodiment is an improved solution based on Embodiment 1. Its main structure is the same as that of Embodiment 1. The improvement lies in that the diagnostic alarm device further includes a data reading and conditioning module, which is used to add timestamps to the angle data, axial acceleration data, sag height data, and detection data. The data reading and conditioning module collects the data of the ADXL375 three-axis accelerometer using the TTL serial port, collects the data of the LPS35HW barometric pressure sensor and the DS1307 clock module using the IIC interface, and then transmits the collected data to the control module. The control module realizes the conditioning calculation of the axial acceleration and sag height of the overhead line 1 through programming, and adds timestamp information to the angle data, axial acceleration data, and sag height data.

[0045] Embodiment 7

[0046] This embodiment is an improved solution based on Embodiment 1. Its main structure is the same as that of Embodiment 1. The improvement lies in that the diagnostic alarm device further includes a power supply module, which is used to supply power to the data sensing module, the control module, and the status judgment module. The power supply module includes two parts: a power source and a power management. Among them, the power source adopts a combination of a flexible photovoltaic panel and a lithium battery. A suitable 1W, 5V, 180mA small flexible photovoltaic panel and a charging module are selected to charge the lithium battery. The power management module adopts a PMOS electronic switch module, which is controlled by the control module to supply power to each module in an orderly manner.

[0047] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A diagnosis and alarm device for galloping and breaking of distribution network overhead lines, characterized in that, Including: A data sensing module, including an attitude sensor and a barometric altitude sensor. The attitude sensor is used to obtain the angular data and axial acceleration data of the overhead line (1), and the barometric altitude sensor is used to obtain the sag height data of the overhead line (1); A control module, configured to output reference data according to the angular data, axial acceleration data, and sag height data; A state judgment module, configured to judge whether the overhead line (1) is galloping and / or broken according to the reference data and output detection data; An installation mechanism, including a receiving box (12) and two torsion springs (2). The receiving box (12) is used to accommodate the data sensing module, the control module, and the state judgment module. The two torsion springs (2) are distributed along the length direction of the distribution network overhead line (1). Both ends of the torsion spring (2) are respectively connected with a first connecting rod (3) and a second connecting rod (4). A first connecting rod (3) and a second connecting rod (4) cross each other to form a space (5) capable of accommodating the distribution network overhead line (1).

2. The dancing and breaking diagnosis and alarm device for distribution network overhead lines according to claim 1, wherein: The receiving box (12) includes a detachable upper box body (6) and a lower box body (7). Both of the two torsion springs (2) are fixedly connected to the upper box body (6). The data sensing module, the control module, and the state judgment module are all arranged in the lower box body (7).

3. The dancing and breaking diagnosis and alarm device for distribution network overhead lines according to claim 2, characterized in that: Two mounting plates (8) distributed along the length direction of the distribution network overhead line (1) are arranged on the top of the upper box body (6). The two torsion springs (2) are arranged on the mounting plates (8) in a one-to-one correspondence.

4. The dancing and breaking diagnosis and alarm device for distribution network overhead lines according to claim 1, characterized in that: Rubber sleeves (9) are sleeved on all the first connecting rods (3) and all the second connecting rods (4).

5. The dancing and breaking diagnosis and alarm device for distribution network overhead lines according to claim 1, wherein: The two first connecting rods (3) are connected by a first connecting shaft (10), and the two second connecting rods (4) are connected by a second connecting shaft (11).

6. The dancing and breaking diagnosis and alarm device for distribution network overhead lines according to claim 1, characterized in that: The diagnostic and alarm device further includes a communication and early warning module, and the communication and early warning module is used to transmit the detection data to the server and send an alarm message.

7. The dancing and breaking diagnosis and alarm device for distribution network overhead lines according to claim 1, wherein: The data sensing module includes a clock signal sub-module, and the clock signal sub-module is used to output time data.

8. The dancing and breaking diagnosis and alarm device for distribution network overhead lines according to claim 1, characterized in that: The diagnostic and alarm device further includes a data reading and conditioning module, and the data reading and conditioning module is used to add time stamps to the angular data, the axial acceleration data, the sag height data, and the detection data.

9. The dancing and breaking diagnosis and alarm device for the overhead distribution line according to claim 1, characterized in that: The diagnostic and alarm device further includes a power supply module, and the power supply module is used to supply power to the data sensing module, the control module, and the state judgment module.

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