Intelligent monitoring system for overhead line system lightning arrester

Abstract

The utility model relates to the technical field of contact networks, in particular to an intelligent monitoring system for a contact network lightning arrester, which comprises a monitor, the monitor is connected with the lightning arrester and used for monitoring the working state of the lightning arrester, and the monitor is mounted on a contact network pillar through a mounting shell. A hanging bracket is arranged between the mounting shell and the bottom plate, and the monitor is provided with a display module. The monitor has the advantages that the monitoring state can be visually displayed through the arranged display module, the inclined posture of the monitor can be adjusted through the hanging bracket, and the display module can be conveniently observed; the device is simple and reasonable in structure, complete in function, convenient to mount and dismount and suitable for popularization.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of contact network, concretely relates to a contact network lightning arrester intelligent monitoring system. BACKGROUND

[0002] With the continuous growth of the electrification mileage of the railway in China, the safety and reliability of the contact network are required more and more, the existing contact network lightning arrester monitor, that is, the electromechanical leakage current monitoring device, on the one hand, does not have display and cannot intuitively show the monitoring state for the operating personnel, on the other hand, the function is imperfect and cannot meet the development needs of the intelligent operation and maintenance of the electrified railway. SUMMARY

[0003] The utility model discloses a kind of contact network lightning arrester intelligent monitoring systems to solve the technical problems in the prior art, the working state of lightning arrester can be clearly and intuitively understood by operating personnel, and the development needs of the intelligent operation and maintenance of electrified railway are met by the function configuration of monitor.

[0004] The utility model discloses a kind of contact network lightning arrester intelligent monitoring systems to solve the technical problems in the prior art, the working state of lightning arrester can be clearly and intuitively understood by operating personnel, and the development needs of the intelligent operation and maintenance of electrified railway are met by the function configuration of monitor.

[0005] A kind of contact network lightning arrester intelligent monitoring system, including lightning arrester and jumper insulator, electrically connected between the two, the lightning arrester and the jumper insulator are installed on contact network pillar by bottom plate, it is characterized by including monitor, the monitor is connected with the lightning arrester and is used to monitor the working state of the lightning arrester, the monitor is installed on the contact network pillar by installation shell, hanger is arranged between the installation shell and the bottom plate, the monitor has display module.

[0006] The display module shows the working state of the lightning arrester by pointer, and the action count of the lightning arrester is shown by electromagnetic counter.

[0007] The monitor has leakage current monitoring circuit, harmonic current monitoring circuit, action frequency monitoring circuit and action and time monitoring circuit.

[0008] The monitor includes power supply module that can obtain leakage current.

[0009] The monitor is built-in wireless communication module.

[0010] One end of the monitor is grounded, and the other end is electrically connected to the low-voltage end of the lightning arrester through the electrode at the top of the jumper insulator.

[0011] The electrode is electrically connected to the low-voltage end by wire or aluminum tape.

[0012] The conductor or the aluminum strip is connected to the jumper insulator through a disconnector.

[0013] The jumper insulator is connected to the overhead contact line through a connecting line which is fixedly installed on the jumper insulator through a wire clamp.

[0014] The hanger comprises a mounting rod fixedly connected with the upper portion of the mounting shell of the monitor and an adjusting rod hingedly connected at one end with the mounting rod and at the other end with the bottom plate.

[0015] The utility model discloses the advantages are: the display module that setting can directly show the monitoring state, adopt the hanger and can adjust the inclined posture of monitor, and the display module is convenient for observation, simple and reasonable in structure, perfect function, convenient to assemble and disassemble, and is suitable for promoting. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the structural schematic diagram of the utility model;

[0017] Fig. 2 It is the schematic diagram of the monitor in the utility model;

[0018] Fig. 3 It is the working principle block diagram of the monitor in the utility model. DETAILED DESCRIPTION

[0019] The utility model features and other related features are further explained in detail in the embodiments combined with the drawings, so as to be understood by the same industry technical personnel:

[0020] As Figs. 1-3 Shown in the figure, the reference numerals 1-17 and A, B respectively represent: lightning arrester 1, jumper insulator 2, overhead contact line support 3, mounting rod 4, adjusting rod 5, insulating pad 6, disconnector 7, conductor 8, monitor 9, connecting line 10, wire clamp 11, display module 12, zero magnetic flux current transformer 13, lightning current transformer 14, 4G communication module 15, amplification circuit 16, analog signal loop 17, self-energy power supply module A, signal sampling and processing module B.

[0021] Embodiment: combined Figs. 1 to 3 As shown, the overhead contact line lightning arrester intelligent monitoring system in the embodiment is used for monitoring the working state of the lightning arrester 1, and the lightning arrester 1 and the jumper insulator 2 thereof are both installed on the bottom plate, and the bottom plate is fixedly installed on the overhead contact line support 3. After the jumper insulator 2 and the lightning arrester 1 are both installed on the bottom plate, the jumper insulator 2 is connected to the overhead contact line through the connecting line 10, and the connecting line 10 is fixedly installed on the jumper insulator through the wire clamp 11.

[0022] A monitor 9 is additionally arranged below the arrester 1, and the monitor 9 is arranged on the overhead line support 3 through a mounting shell, and the monitor 9 has a display module 12. The mounting shell of the monitor 9 is adjusted in an inclined posture through a hanger, one end of the hanger is connected to the mounting shell, and the other end is connected to a bottom plate on which the arrester 1 is arranged.

[0023] In the embodiment, the hanger includes a mounting rod 4 and an adjusting rod 5 hinged to the mounting rod 4, the mounting rod 4 is fixedly connected to an upper portion of the mounting shell of the monitor 9, and the other end of the adjusting rod 5 is hinged to the bottom plate. Based on this, the adjusting manner of the inclined posture of the monitor 9 can be adjusted by the adjusting rod 5, the position of the mounting rod 4 is changed by swinging the adjusting rod 5, so that the position of the mounting shell of the monitor 9 is changed, so that the observation is not affected by similar waterlogging and the like, and meanwhile, a suitable liquid crystal viewing angle is ensured for an observer on the ground.

[0024] In the embodiment, the monitor 9 is provided with the display module 12 for providing a display function, the display module 12 can display the working state of the arrester 1, and an existing pointer display form can be adopted. A 3-bit electromagnetic counter is adopted to display the action count, and a pointer is adopted to display the full current. When the pointer is adopted to display, the scale table should have a normal zone (green), an attention zone (yellow) and an alarm zone (red). When the full current is in a range of 0.1 mA-1 mA, the state of the body is displayed as green, and the state is judged as normal. When the full current is in a range of 1 mA-2 mA, the state is displayed as yellow, and the state is judged as attention. When the full current is greater than 2 mA, the state is displayed as red, and the state is judged as abnormal.

[0025] As shown in Fig. 3 , the monitor 9 has a leakage current monitoring circuit, a harmonic current monitoring circuit, an action frequency monitoring circuit and an action time monitoring circuit. The monitor 9 is internally provided with a wireless communication module.

[0026] In the embodiment, the monitor 9 monitors the arrester 1 features such as leakage current, third harmonic current, action frequency, last action time and the like. Specifically, as shown in Fig. 3 , the monitor 9 has a self-powered power supply module A and a signal sampling and processing module B. The leakage current is sensed by a zero-flux current transformer 13, the sensing signal is processed by an amplification circuit 16 to the MCU, the model of the MCU is STM32L431, the chip is an existing chip, the leakage current and the third harmonic current are calculated through the MCU sampling and a built-in algorithm module. The action frequency is sensed by a lightning current transformer 14, the sensing signal is processed by an analog signal loop 17 to output a TTL pulse signal to the MCU, and the MCU completes the action count and records the last action time after detecting the pulse signal.

[0027] The monitor 9 comprises a power supply module capable of acquiring the leakage current, and the leakage current acquisition function can be realized through the power supply module. When the overhead line is electrified, the leakage current is acquired through the arrester 1, and the leakage current can be set to be greater than 200uA to acquire power. The leakage current of the arrester 1 flows into the rectifier bridge circuit of the self-powered power supply module A, realizes AC-DC conversion, and the converted DC current charges the super capacitor, and the energy collection is realized by using the super capacitor. The built-in wireless communication module in the monitor 9 can realize the communication function of the monitor 9, for example, the 4G communication module 15 is used, when the power grid is electrified, the communication function of the 4G communication module 15 can be used to send the monitored data to the outside, for example, the electrified railway intelligent operation and maintenance system. The operation and maintenance personnel can comprehensively analyze the monitoring data without manually reading the meter on site, and realize the state monitoring and health state analysis of the overhead line arrester under the electrified operation.

[0028] As shown in Fig. 1 The one end of the monitor 9 is grounded, and the other end of the monitor 9 is electrically connected to the low-voltage end of the arrester 1 through the electrode at the top of the jumper insulator 2. The electrode is electrically connected to the low-voltage end through the wire 8 or the aluminum strip. The wire 8 or the aluminum strip is connected to the jumper insulator 2 through the disconnector 7.

[0029] In the embodiment, the metal base of the monitor 9 is fixed on the mounting shell, for example, the metal base of the monitor 9 is fixed on the metal shell by using the M10 screw, at this time, the mounting shell adopts the metal shell, and the metal base is used as the wiring bus and grounded through the metal shell; or the monitor 9 is directly grounded through the grounding bus.

[0030] In the specific implementation of the embodiment, the monitor 9 is further detachably provided with a shielding plate, the shielding plate is supported on the monitor 9 by a support, and the shielding plate can shield rain. The support can comprise an extendable support rod, and the covering height can be adjusted, and the covering height is adjusted to be low to facilitate shielding, and the covering height is adjusted to be high to facilitate observation.

[0031] The arrester 1 is installed on the bottom plate through the insulating pad 6.

[0032] Although the above embodiment has been described in detail with reference to the drawings, those skilled in the art can recognize that various improvements and changes can be made to the present application without departing from the scope defined by the claims, and therefore, detailed description is not given here.

Claims

1. A smart monitoring system for contact network surge arresters, comprising a surge arrester and a jumper insulator electrically connected thereto, wherein the surge arrester and the jumper insulator are mounted on a contact network support via a base plate, characterized in that: The device includes a monitor connected to the surge arrester for monitoring the operating status of the surge arrester. The monitor is mounted on the contact wire support via a mounting housing. A hanger is provided between the mounting housing and the base plate. The monitor has a display module.

2. The intelligent monitoring system for overhead contact line surge arresters according to claim 1, characterized in that: The display module displays the operating status of the surge arrester via pointers and the action count of the surge arrester via an electromagnetic counter.

3. The intelligent monitoring system for overhead contact line surge arresters according to claim 1, characterized in that: The monitor has a leakage current monitoring circuit, a harmonic current monitoring circuit, an action count monitoring circuit, and an action and time monitoring circuit.

4. The intelligent monitoring system for overhead contact line surge arresters according to claim 1, characterized in that: The monitor includes a power supply module capable of acquiring leakage current.

5. The intelligent monitoring system for overhead contact line surge arresters according to claim 1, characterized in that: The monitor has a built-in wireless communication module.

6. The intelligent monitoring system for overhead contact line surge arresters according to claim 1, characterized in that: One end of the monitor is grounded, and the other end is electrically connected to the low-voltage end of the surge arrester through the electrode at the top of the jumper insulator.

7. The intelligent monitoring system for overhead contact line surge arresters according to claim 6, characterized in that: The electrode is electrically connected to the low-voltage terminal via a wire or aluminum strip.

8. The intelligent monitoring system for overhead contact line surge arresters according to claim 7, characterized in that: The conductor or the aluminum strip is connected to the jumper insulator via a disconnector.

9. The intelligent monitoring system for overhead contact line surge arresters according to claim 1, characterized in that: The jumper insulator is connected to the contact network via a connecting wire, which is fixed to the jumper insulator by a wire clamp.

10. The intelligent monitoring system for overhead contact line surge arresters according to claim 1, characterized in that: The hanger includes a mounting rod and an adjusting rod. The mounting rod is fixedly connected to the upper part of the mounting housing of the monitor. One end of the adjusting rod is hinged to the mounting rod, and the other end is hinged to the base plate.

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