CN102494658B - Online wind deviation angle monitoring device for power transmission line - Google Patents

Abstract

The invention relates to an online wind deviation angle monitoring device for a power transmission line. The device mainly comprises a main cabinet, a circuit board, a temperature and humidity sensor, a wind speed and direction sensor, an obliquity angle sensor, a solar cell, a camera, a 3rd generation (3G) communication antenna, a lightning arrester, a computer and a printer, wherein data acquired by the main cabinet and the camera is transmitted to a main computer on the ground for operating and printing through 3G wireless communication. The device has an advanced design and a reasonable structure, is safely, stably and reliably operated, has full and accurate data and small errors and is an extremely ideal online wind deviation angle monitoring device for an overhead high-voltage power transmission line, monitoring capacity of wind deviation angle early warning and wind deviation fault positioning is greatly improved, and research gaps of technologies are filled through the device.

Description

On-line monitoring device for wind deflection angle of transmission line

technical field

The invention relates to an on-line monitoring device for wind deflection angle of a transmission line, belonging to the technical field of remote on-line monitoring equipment for overhead high-voltage transmission lines.

Background technique

The overhead transmission line is an important part of the power grid system. The transmission line is mainly composed of towers, lightning rods, wires, insulator strings and fittings; the wind deflection discharge of the transmission line is one of the factors that affect the normal operation of the line. The wind deflection includes jumper wind deflection, Interphase wind deflection and insulator wind deflection, jumper wind deflection means that the jumper wire of the corner tower is affected by the strong wind, which shortens the distance between the jumper wire and the corner tower, forming jumper wire discharge; interphase wind deflection refers to the distance between the wires under strong wind conditions The electrical distance is shortened, which causes discharge between different phase conductors; the insulator wind deflection angle is the angle formed between the hanging insulator string and the wire and the vertical direction caused by the wind speed, and the wind deflection of the insulator string is the most important cause of wind deflection discharge accidents. The wind deflection of the insulator string is mainly due to the reduction of the air gap between the charged body at the lower end of the insulator string and the iron tower in dangerous terrain areas such as hillsides and canyons. It will happen when the electric strength of this gap cannot bear the operating voltage of the system discharge phenomenon.

There are external and internal factors for wind deflection flashover. The external cause is severe weather such as strong wind, hail, rainfall, and blowing sand, which reduces the electric strength of the air gap between the insulator string and the iron tower, thereby causing wind deflection discharge; the internal cause is that the transmission line resists Insufficient strong wind capacity, such as deviations in the span of the front and rear towers, the representative span, the height difference of the suspension point of the conductor, the weight of the suspension string of the conductor and the insulator, the diameter of the conductor and the specific load and stress, etc., will also cause wind deflection discharge; The wind deflection discharge of lines is a very important research topic.

Contents of the invention

purpose of invention

The purpose of the present invention is to design a wind deflection on-line monitoring device of a transmission line for the situation of the background technology, which adopts a double-shielded circuit board, a temperature and humidity sensor, a wind speed and direction sensor, an inclination sensor, a solar cell, 3G wireless communication, and computer processing. All-weather wind deflection and peripheral environment online monitoring of transmission lines, in order to greatly improve the accuracy and efficiency of early warning and forecast of wind deflection faults.

Technical solutions

The main structure of the present invention is composed of: main box, circuit board, anemometer, temperature and humidity sensor, wind speed and direction sensor, inclination sensor, solar panel, battery, camera, 3G wireless communication antenna, main computer, printer, lightning rod, shielded cable The main frame 6 is installed on the pole tower, and the top of the main frame 6 is provided with an anemometer support 8, the anemometer support 8 top is an anemometer 9, and the anemometer 9 top is a wind scale body 11 and a wind direction Sensor 34, the left part of the wind vane body 11 is the wind speed indicator 1, and the right part is the wind vane 10; the upper left part of the main chassis 6 is provided with an antenna seat 3 and a 3G transmitting antenna 2; the left oblique part of the main chassis 6 is provided with a solar panel 4; The right part of the main chassis 6 is connected to the camera support 21 through the camera fixing frame 12, and the right part of the camera support 21 is connected to the flange plate 18 and the camera 17 through bolts 19. 14; the upper part of the camera 17 is provided with a lightning rod 20; the lower left part of the main frame 6 is provided with a wind angle sensor 33, and is connected to the main frame 6 by a wire 7, and the wind angle sensor 33 is installed on the insulator string of the tower; There is a 3G receiving antenna 26, and the 3G receiving antenna 26 is connected to a host computer 27, a keyboard 28, and is connected to a printer 29 through a wire 30.

The main chassis 6 is trapezoidal and made of stainless steel. The main chassis 6 is provided with a shielding chassis 22, a storage battery 24, a temperature and humidity sensor 31, and is connected by a wire 25. In the shielding chassis 22, a circuit board 23 and an inclination angle The sensor 32 and the shielding case 22 are made of copper-aluminum alloy material, and the main case is a double shielding case.

The circuit of described circuit board 23 is charged by microcomputer control circuit IC1, analog-to-digital conversion reference power supply circuit IC2, JTAG debugging circuit IC3, 3G wireless communication module circuit IC4, SD memory card circuit IC5, SIM card circuit IC6, and solar panel Circuit IC7, anemometer power control circuit IC8, inclination sensor power control circuit IC9, serial debugging circuit IC10, wind speed and direction acquisition circuit IC11, temperature and humidity acquisition circuit IC12, inclination angle acquisition circuit IC13, video acquisition circuit IC14, power control circuit IC15 The overall circuit, each sub-circuit is connected by wires.

The data acquisition, control and calculation of the wind deflection online monitoring device of the transmission line are all completed by computer programs, and the programs are as follows:

The method for measuring the wind angle on-line monitoring device of the wind angle of the transmission line is as follows:

Through the data collected by the wind angle sensor, the wind angle is calculated, and then the offset of the tower insulator string is calculated, and the minimum gap of the wind discharge discharge is calculated according to different micro-meteorological conditions, and the alarm is issued when it is close to the minimum gap; The image of the insulator string at rest is stored in the SD card, and then the image of the tower insulator string is collected in real time, and the image edge detection technology is used to compare and process the collected image with the image at rest to obtain the windage angle and deflection of the tower insulator string The displacement is compared with the wind angle and offset calculated above, and the wind deviation warning is accurate, and the wind angle and micro-meteorological data are recorded at the same time.

Beneficial effect

Compared with the background technology, the present invention has obvious advancement. It is an online, remote, informationized and digital monitoring device designed for the harsh environment of overhead high-voltage transmission lines. The main box, solar cells, and inclination sensors are installed on the pole tower. , dome camera, 3G wireless communication antenna, use the wind deflection data to calculate the wind deflection, and measure the wind deflection angle by monitoring the tower insulator string through the camera to achieve accurate early warning. Monitor the wind deflection angle of tower insulator strings and the operation of transmission lines, and transmit the data to the main computer on the ground through the 3G wireless communication network, realizing informatization and digital monitoring, safe, stable and reliable, detailed and accurate data, small errors, and camera control. It is an ideal on-line monitoring device for the wind deflection angle of transmission lines, which fills the scientific research gap of this type of technology.

Description of drawings

Figure 1 is the overall structure and layout

Figure 2 is a sectional view of the main chassis A-A of Figure 1

Figure 3 is the circuit diagram of the main chassis circuit board

As shown in the figure, the list of reference signs is as follows:

1. Wind speed indicator, 2. 3G transmitting antenna, 3. Antenna seat, 4. Solar panel, 5. Mounting hole, 6. Main box, 7. Wire, 8. Wind speed and direction instrument support, 9. Wind speed and direction instrument, 10. Wind vane, 11. Weather vane body, 12. Camera fixing frame, 14. Transparent cover, 15. Support ring, 16. Ball cover shell, 17. Camera, 18. Flange, 19. Bolt, 20. Lightning rod, 21. Camera bracket, 22. Shielded case, 23. Circuit board, 24. Battery, 25. Wire, 26. 3G receiving antenna, 27. Main computer, 28. Keyboard, 29. Printer, 30. Wire, 31. Temperature and humidity Sensor, 32, inclination sensor, 33, wind angle sensor, 34, wind speed and wind direction sensor.

IC1, microcomputer control circuit, IC2, analog-to-digital conversion power supply circuit, IC3, JTAG debugging circuit, IC4, 3G wireless communication module circuit, IC5, SD memory card circuit, IC6, SIM card circuit, IC7, solar battery charging circuit, IC8 , Anemometer power control circuit, IC9, inclination sensor power control circuit, IC10, serial port debugging circuit, IC11, wind speed and direction acquisition circuit, IC12, temperature and humidity acquisition circuit, IC13, inclination angle acquisition circuit, IC14, video acquisition circuit, IC15, Power control circuit.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, it is the overall structure and layout. The position and connection relationship of each part must be correct and the installation should be firm.

The main box 6 and the camera 17 are the main body of monitoring, installed on the overhead transmission line tower, using solar panels to obtain electric energy, and installing wind speed, wind direction, and wind angle sensors on the main box 6, and transmitting monitoring information to the ground through 3G wireless communication The main computer, the main computer obtains the wind angle data through programmed calculation and prints it.

As shown in Fig. 2, it is the A-A sectional view of the main chassis of Fig. 1, the main chassis 6 is a double-shielded chassis, and the circuit board 23 is placed in the main chassis 6 and the shielded chassis 22, which has played a double-layer protection role.

As shown in Figure 3, it is the circuit diagram of the main box circuit board. The position and connection relationship of each part must be correct. The microcomputer controls the overall circuit and performs calculations in a programmed manner to complete the functions of collecting information and transmitting information.

Claims (3)

1. an angle of wind deflection on-Line Monitor Device for transmission line of electricity, is characterized in that: primary structure by: mainframe box, circuit board, anemoclinograph, Temperature Humidity Sensor, wind speed wind direction sensor, solar panel, accumulator, camera, 3G wireless communication antenna, principal computer, printer, lightning rod, shielded cable form; Mainframe box (6) is arranged on shaft tower, be provided with anemoclinograph bearing (8) on the top of mainframe box (6), anemoclinograph bearing (8) top is anemoclinograph (9), anemoclinograph (9) top is weathercock body (11), weathercock body (11) centre position is provided with wind speed wind direction sensor (34), and weathercock body (11) left part is that wind speed mark (1), right part are weathervane (10); The upper left quarter of mainframe box (6) is provided with antenna pedestal (3), 3G emitting antenna (2); The left tiltedly portion of mainframe box (6) is provided with solar panel (4); The right part of mainframe box (6) connects camera bracket (21) by lens supporting structure (12), camera bracket (21) right part is by bolt (19) mounting flange (18), camera (17), and camera (17) is outside is that ball cover shell (16), bottom are bracing ring (15), translucent cover (14); Camera (17) top is provided with lightning rod (20), and the lower left quarter of mainframe box (6) is provided with angle of wind deflection sensor (33), and is connected with mainframe box (6) by wire (7), and angle of wind deflection sensor (33) is arranged on the insulator chain of shaft tower; Be provided with 3G receiving antenna (26) on ground, 3G receiving antenna (26) connects principal computer (27), keyboard (28), and connects printer (29) by wire (30).

2. the angle of wind deflection on-Line Monitor Device of a kind of transmission line of electricity according to claim 1, it is characterized in that: described mainframe box (6) is trapezoidal shape, make of stainless steel material, in mainframe box (6), be provided with shielding case (22), accumulator (24), Temperature Humidity Sensor (31), and connected by wire (25), in shielding case (22), be circuit board (23) and obliquity sensor (32), shielding case (22) is made of X alloy material, and mainframe box is double shield cabinet.

3. the angle of wind deflection on-Line Monitor Device of a kind of transmission line of electricity according to claim 1, it is characterized in that: the circuit of described circuit board (23), by microcomputer control circuit (IC1), analog to digital conversion reference power circuit (IC2), JTAG debug circuit (IC3), 3G wireless communication module circuit (IC4), SD storage card circuit (IC5), SIM card circuit (IC6), solar panel charging circuit (IC7), anemoclinograph power control circuit (IC8), obliquity sensor power control circuit (IC9), AccessPort circuit (IC10), wind speed and direction Acquisition Circuit (IC11), humiture collection circuit (IC12), inclination angle Acquisition Circuit (IC13), video capture circuit (IC14), power control circuit (IC15) composition integrated circuit, each parallel circuit is connected by wire.