Suspension insulator string structure for high-voltage power transmission line

Abstract

The invention relates to the technical field of high-voltage power transmission, in particular to a suspension insulator string structure for a high-voltage power transmission line, which comprises an insulator string, an upper connecting fitting and a lower connecting fitting, the upper end of the insulator string is connected with the upper connecting fitting, and the lower end of the insulator string is connected with the lower connecting fitting. The insulator string comprises a plurality of toughened glass insulators, the optical transmitter, the optical fiber, the optical receiver and the controller are arranged, optical signals transmitted by the optical transmitter are transmitted to the optical receiver through the optical fiber to be received, and when a self-explosion fault occurs in the insulator string, the optical fiber is cut off, so that the optical receiver cannot receive the optical signals, and the optical receiver cannot receive the optical signals. When the tempered glass insulator is broken down, the optical receiver transmits the information that the optical signal cannot be received to the controller, the controller transmits the information that the optical signal cannot be received to the remote monitoring center, and operation and maintenance personnel know which tower insulator string is broken down at the first time in the remote monitoring center, so that the tempered glass insulator can be timely found out to break down.

Description

Technical Field

[0001] This invention relates to the field of high-voltage power transmission technology, and in particular to a suspension insulator string structure for high-voltage power transmission lines. Background Technology

[0002] In high-voltage transmission lines, the insulator string structure is a key component ensuring line insulation and mechanical support. Currently, a commonly used insulator string structure is the suspension insulator string structure, which includes an insulator string, upper connecting hardware, and lower connecting hardware. The upper end of the insulator string is connected to the upper connecting hardware, and the lower end is connected to the lower connecting hardware. The insulator string consists of multiple tempered glass insulators, which are connected in series from top to bottom. Each tempered glass insulator includes a disc-shaped part and a column-shaped part connected together, with the column-shaped part positioned above the disc-shaped part. Because tempered glass insulators are exposed to harsh natural environments and bear electromechanical loads for extended periods, they inherently carry a risk of spontaneous explosion. This spontaneous explosion occurs randomly, and the fault point is usually located in remote mountainous areas, traditionally relying entirely on periodic line inspections for detection. This manual inspection method has the problem of not being able to detect faulty tempered glass insulators in a timely manner, leading to faulty insulators potentially operating with defects for extended periods, posing a serious safety hazard such as line breakage or disconnection. Summary of the Invention

[0003] The technical problem solved by this invention is to provide an overhead conductor structure for high-voltage transmission lines that can promptly detect faults in tempered glass insulators.

[0004] The technical solution adopted by this invention to solve its technical problem is: a suspension insulator string structure for high-voltage transmission lines, including an insulator string, an upper connecting hardware and a lower connecting hardware. The upper end of the insulator string is connected to the upper connecting hardware, and the lower end of the insulator string is connected to the lower connecting hardware. The insulator string includes multiple tempered glass insulators, which are connected in series from top to bottom. Each tempered glass insulator includes a disc-shaped part and a columnar part connected together. The columnar part is located above the disc-shaped part. The structure also includes a light transmitter, an optical fiber, a light receiver and a controller. The light transmitter is located on the lower connecting hardware, and the light receiver is located on the columnar part of the uppermost tempered glass insulator or on the upper connecting hardware. The upper end of the optical fiber is connected to the light receiver, and the lower end of the optical fiber is connected to the light transmitter. The optical fiber passes through all the tempered glass insulators in sequence. The controller is mounted on the columnar part of the uppermost tempered glass insulator or on the upper connecting hardware, and the controller can be electrically connected to a remote monitoring center.

[0005] Furthermore, the tempered glass insulator is provided with through holes running vertically, through which optical fibers are matched.

[0006] Furthermore, the optical fiber is made of glass.

[0007] Furthermore, the light emitter is a light-emitting diode or a laser diode.

[0008] Furthermore, the light receiver is a photodiode or a photoresistor.

[0009] Furthermore, it also includes an alarm, which is installed on the upper connecting hardware; The alarm is electrically connected to the controller.

[0010] Furthermore, the alarm is an audible and visual alarm.

[0011] The beneficial effects of this invention are as follows: By incorporating a light transmitter, optical fiber, optical receiver, and controller, the light transmitter is mounted on the lower connecting hardware, and the optical receiver is mounted on the columnar part of the uppermost tempered glass insulator. The upper end of the optical fiber is connected to the optical receiver, and the lower end of the optical fiber is connected to the light transmitter. The optical fiber passes sequentially through all the tempered glass insulators, electrically connecting the controller to a remote monitoring center. The light signal emitted by the light transmitter is transmitted via the optical fiber to the optical receiver. When any tempered glass insulator in the insulator string experiences a "spontaneous explosion" fault during use, the instantaneous enormous mechanical impact force and flying fragments generated by the tempered glass insulator will sever the optical fiber, preventing the optical receiver from receiving the light signal. The information that the optical receiver cannot receive the light signal is transmitted to the controller, which then transmits this information to the remote monitoring center. Maintenance personnel at the remote monitoring center can immediately identify which tower's insulator string has exploded, thus enabling timely detection of tempered glass insulator faults and rapid organization of personnel for precise replacement, ensuring the normal operation of the suspension insulator string structure. Attached Figure Description

[0012] Figure 1 This is a schematic cross-sectional view of the suspension insulator string structure of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 yes Figure 1 Enlarged view at point B in the middle; Figure 4 This is a schematic diagram of a tempered glass insulator; Figure 5 This is a schematic diagram of an optical fiber being cut. The components are labeled as follows: insulator string 1, tempered glass insulator 11, disc part 111, column part 112, upper connecting hardware 2, lower connecting hardware 3, optical transmitter 4, optical fiber 5, optical receiver 6, controller 7, and alarm 8. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention relates to a suspension insulator string structure for high-voltage transmission lines, comprising an insulator string 1, an upper connecting fitting 2, and a lower connecting fitting 3. The upper end of the insulator string 1 is connected to the upper connecting fitting 2, and the lower end of the insulator string 1 is connected to the lower connecting fitting 3. The insulator string 1 comprises multiple tempered glass insulators 11, which are connected in series from top to bottom. Each tempered glass insulator 11 comprises a disc-shaped portion 111 and a columnar portion 112 connected together. The columnar portion 112 is disposed above the disc-shaped portion 111. The invention also includes an optical transmitter 4, an optical fiber 5, an optical receiver 6, and a controller 7. The optical transmitter 4 is disposed on the lower connecting fitting 3, and the optical receiver 6 is disposed on the columnar portion 112 of the uppermost tempered glass insulator 11 or on the upper connecting fitting 2. The upper end of the optical fiber 5 is connected to the optical receiver 6, and the lower end of the optical fiber 5 is connected to the optical transmitter 4. The optical fiber 5 passes through all the tempered glass insulators 11 in sequence. The controller 7 is installed on the columnar part 112 of the uppermost tempered glass insulator 11 or on the upper connecting hardware 2. The controller 7 can be electrically connected to the remote monitoring center.

[0015] The controller 7 is electrically connected to the remote monitoring center. The optical signal emitted by the optical transmitter 4 is transmitted to the optical receiver 6 via optical fiber 5. When any tempered glass insulator 11 in the insulator string 1 experiences a "spontaneous explosion" fault during use, the enormous mechanical impact force and flying fragments generated by the tempered glass insulator 11 will sever the optical fiber 5. Figure 5 As shown, this prevents the optical receiver 6 from receiving optical signals. The information that the optical receiver 6 cannot receive optical signals is transmitted to the controller, which then transmits the information to the remote monitoring center. The maintenance personnel at the remote monitoring center can immediately know which tower's insulator string 1 has burst, thus enabling them to promptly detect the fault in the tempered glass insulator 11 and quickly organize personnel for precise replacement, ensuring the normal use of the suspension insulator string structure.

[0016] Specifically, in order to facilitate the sequential passing of the optical fiber 5 through all the tempered glass insulators 11, the tempered glass insulators 11 are provided with through holes that run vertically through them, and the optical fiber 5 is matched and passed through the through holes.

[0017] The optical fiber 5 can be made of glass or plastic. Since the tempered glass insulator 11 is made of tempered glass, it can ensure that the optical fiber 5 is cut off when it bursts. In order to ensure the performance of the optical fiber 5, the material of the optical fiber 5 is more preferably glass.

[0018] To ensure the effectiveness of the light emitter 4 and the light receiver 6, the light emitter 4 is preferably a light-emitting diode or a laser diode, and the light receiver 6 is preferably a photodiode or a photoresistor.

[0019] To make it easier for maintenance personnel to identify which insulator string 11 on which tower has burst, for example... Figure 1 , Figure 2 As shown, the present invention also includes an alarm 8, which is mounted on the upper connecting fitting 2 and electrically connected to the controller 7. Upon receiving information that a light signal cannot be received, the controller automatically controls the alarm 8 to sound an alarm, alerting maintenance personnel. To improve the effectiveness of the alarm 8, it is preferably an audible and visual alarm.

Claims

1. A suspension insulator string structure for high-voltage transmission lines, comprising an insulator string (1), an upper connecting fitting (2) and a lower connecting fitting (3), the upper end of the insulator string (1) being connected to the upper connecting fitting (2), and the lower end of the insulator string (1) being connected to the lower connecting fitting (3), the insulator string (1) comprising a plurality of tempered glass insulators (11), the plurality of tempered glass insulators (11) being connected together in series from top to bottom, the tempered glass insulator (11) comprising a disc-shaped portion (111) and a columnar portion (112) connected together, the columnar portion (112) being arranged above the disc-shaped portion (111), characterized in that: The utility model also comprises a light transmitter (4), an optical fiber (5), a light receiver (6) and a controller (7), the light transmitter (4) is arranged on the lower connecting hardware (3), the light receiver (6) is arranged on the columnar part (112) of the uppermost tempered glass insulator (11) or the upper connecting hardware (2), the upper end of the optical fiber (5) is connected with the light receiver (6), the lower end of the optical fiber (5) is connected with the light transmitter (4), and the optical fiber (5) passes through all tempered glass insulators (11) in sequence and is arranged; The controller (7) is arranged on the columnar part (112) of the uppermost tempered glass insulator (11) or the upper connecting hardware (2), and the controller (7) can be electrically connected with a remote monitoring center.

2. A suspension insulator string structure for high voltage transmission lines as claimed in claim 1, wherein: The tempered glass insulator (11) is provided with a through hole penetrating up and down, and the optical fiber (5) is arranged by matching the through hole.

3. A suspension insulator string structure for high voltage transmission lines as claimed in claim 1, wherein: The material of the optical fiber (5) is glass.

4. A suspension insulator string structure for high voltage transmission lines as claimed in claim 1, wherein: The light transmitter (4) is a light emitting diode or a laser diode.

5. A suspension insulator string structure for high voltage transmission lines as claimed in claim 1, wherein: The light receiver (6) is a photodiode or a photoresistor.

6. A suspension insulator string structure for high voltage transmission lines according to any one of claims 1 to 5, characterized in that: The utility model also comprises an alarm (8), and the alarm (8) is arranged on the upper connecting hardware (2); The alarm (8) is electrically connected with the controller (7).

7. A suspension insulator string structure for high voltage transmission lines as claimed in claim 6, wherein: The alarm (8) is an audible and visual alarm.

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