Submarine cable terminal intelligent monitoring and early warning system

Abstract

The utility model discloses an intelligent monitoring and early warning system for a submarine cable terminal. The intelligent monitoring and early warning system comprises switch cabinet equipment, an infrared imaging module, a live display module, a partial discharge acquisition amplifier, a remote communication module, an operation monitoring center, a partial discharge analysis module and an early warning module. According to the utility model, the state of the submarine cable terminal switch cabinet equipment can be monitored on line, and a maintenance plan is determined according to the state of the switch cabinet equipment, so that hidden dangers can be found in the bud in time, the safety of the terminal switch cabinet equipment is improved, and the maintenance cost of the terminal switch cabinet equipment is reduced.

Description

[Technical field]

[0001] The utility model relates to the technical field of cable monitoring, in particular to the technical field of an intelligent monitoring and early warning system for a submarine cable terminal. [Background technology]

[0002] Submarine cables are cables wrapped with insulating materials, laid on the seabed, and used for telecommunication transmission. Submarine cables are divided into submarine communication cables and submarine power cables. With the development of society, the demand for electricity continues to increase, energy and power projects continue to develop, power supply methods are diversified, and reliability requirements are becoming higher and higher. As one of the important equipment for connecting submarine cables, medium-voltage switchgear often has burnt accidents of switchgear components, cable connectors, PTs, busbar connectors, etc.; offshore wind turbines are affected by harsh working conditions such as vibration, salt corrosion, and humidity, and are prone to loose electrical connections, cable aging and wear, equipment insulation failure, etc. Due to its armored closed structure, it is difficult for maintenance personnel to find such insulation defects. Traditional equipment regular maintenance is carried out without knowing the equipment status. On the one hand, it is time-consuming and laborious, and on the other hand, it is powerless to prevent the rapid deterioration of insulation between two maintenances. Regular maintenance is laborious and ineffective. Traditionally, once a fault occurs, it is "passive maintenance", especially for offshore wind turbines, there is no preparation for fault maintenance, and it can only be allowed to develop, resulting in huge economic losses. Therefore, it is extremely necessary to design an online monitoring and early warning system, both in terms of safety and economy. [Contents of the utility model]

[0003] The purpose of the utility model is to solve the problems in the prior art and propose an intelligent monitoring and early warning system for submarine cable terminals, which can monitor the status of submarine cable terminal switch cabinet equipment online and determine the maintenance plan according to the status of the switch cabinet equipment, so that hidden dangers can be discovered in time in the embryonic stage, thereby improving the safety of terminal switch cabinet equipment and reducing the maintenance cost of terminal switch cabinet equipment.

[0004] To achieve the above-mentioned purpose, the utility model proposes an intelligent monitoring and early warning system for submarine cable terminals, including switch cabinet equipment, infrared imaging module, live display module, partial discharge acquisition amplifier, remote communication module, operation monitoring center, partial discharge analysis module and early warning module, the switch cabinet equipment is provided with an infrared imaging module, the switch cabinet is provided with a live display module connected thereto, the live display module is fixedly provided on the outside of the cabinet door of the switch cabinet equipment, the live display module is connected thereto with a partial discharge acquisition amplifier, the switch cabinet equipment is provided with a remote communication module, the infrared imaging module and the partial discharge acquisition amplifier are respectively connected to the operation monitoring center through the remote communication module, the operation monitoring center is provided with a partial discharge analysis module, the partial discharge analysis module is connected to the early warning module, and the early warning module is provided on the operation monitoring center.

[0005] Preferably, there are multiple infrared imaging modules, and the infrared imaging modules are facing the cable connectors in the switch cabinet equipment.

[0006] Preferably, the charged display module comprises an equivalent capacitor and a charged indicator light, and the equivalent capacitor is connected to a partial discharge acquisition amplifier.

[0007] Preferably, the charged display module is provided with an independently powered simulated partial discharge module, the simulated partial discharge module is connected to a partial discharge acquisition amplifier, and the simulated partial discharge module is connected to an operation monitoring center via a remote communication module.

[0008] Preferably, the remote communication module is connected to the operation monitoring center via a submarine cable optical fiber, and the outer sheath of the submarine cable optical fiber is provided with an armored shielding wire tube.

[0009] Preferably, the operation monitoring center is connected to an independent power supply.

[0010] Preferably, the warning module is provided with a warning data threshold and an over-limit alarm.

[0011] Beneficial effects of the utility model: the live display module of the utility model indicates the live condition of the three-phase bus by connecting a capacitor equivalent to a bus support insulator and a luminous neon bulb in series, uses the equivalent capacitor as a coupling capacitor for pulse current method partial discharge test, and realizes online monitoring of partial discharge through the live display module integrated with a partial discharge acquisition amplifier, so that it has the dual functions of live display and partial discharge online monitoring, uses the original insulator equivalent capacitor of the switch cabinet for monitoring, does not need to add a capacitance sensor, reduces installation cost and wiring, and is remotely transmitted to the operation monitoring platform through optical fiber communication for monitoring by operating personnel, and is communicated on the original circuit monitored equipment Through the simulated partial discharge module, a pulse of a certain discharge amount is applied to simulate partial discharge, and the partial discharge amount displayed on the operation monitoring platform is observed to see whether it is consistent with the partial discharge amount applied by the monitored equipment. If not, the measuring instrument is adjusted to make them consistent. The measurement and calibration of this technology are carried out when the switch cabinet is online. The infrared imaging module is used to infrared image the cable connector head, and the connection status of the cable connector is monitored in real time. The terminal intelligent monitoring and early warning system is used to capture signs of accidents, early warning, prevent failures, and reduce the occurrence of sudden vicious accidents. The maintenance plan is determined according to the equipment status, so that hidden dangers can be discovered in time in the bud stage, the safety of the equipment is improved, and the "condition maintenance" of equipment operation and maintenance is truly realized.

[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0013] Figure 1 It is a structural schematic diagram of the utility model submarine cable terminal intelligent monitoring and early warning system.

[0014] In the figure: 1- switch cabinet equipment, 2- infrared imaging module, 3- live display module, 4- partial discharge acquisition amplifier, 5- remote communication module, 6- operation monitoring center, 7- partial discharge analysis module, 8- early warning module, 9- simulated partial discharge module. [Specific implementation method]

[0015] See also Figure 1The utility model submarine cable terminal intelligent monitoring and early warning system includes a switch cabinet device 1, an infrared imaging module 2, a live display module 3, a partial discharge acquisition amplifier 4, a remote communication module 5, an operation monitoring center 6, a partial discharge analysis module 7 and an early warning module 8. The switch cabinet device 1 is provided with an infrared imaging module 2, the switch cabinet is provided with a live display module 3 connected thereto, the live display module 3 is fixedly arranged on the outside of the cabinet door of the switch cabinet device 1, the live display module 3 is connected thereto with a partial discharge acquisition amplifier 4, the switch cabinet device 1 is provided with a remote communication module 5, the infrared imaging module 2 and the partial discharge acquisition amplifier 4 are respectively connected to the operation monitoring center 6 through the remote communication module 5, the operation monitoring center 6 is provided with a partial discharge analysis module 7, and the partial discharge analysis module 7 is connected to the early warning module 8 The early warning module 8 is arranged on the operation monitoring center 6. There are multiple infrared imaging modules 2. The infrared imaging module 2 is facing the cable joint in the switch cabinet equipment 1. The charged display module 3 includes an equivalent capacitor and a charged indicator light. The equivalent capacitor is connected to the local discharge acquisition amplifier 4. The charged display module 3 is provided with an independently powered simulated local discharge module 9. The simulated local discharge module 9 is connected to the local discharge acquisition amplifier 4. The simulated local discharge module 9 is connected to the operation monitoring center 6 through a remote communication module 5. The remote communication module 5 is connected to the operation monitoring center 6 through a submarine cable optical fiber. The outer sheath of the submarine cable optical fiber is provided with an armored shielded wire tube. The operation monitoring center 6 is connected with an independent power supply. The early warning module 8 is provided with a warning data threshold and an over-limit alarm.

[0016] The charged display module 3 of the utility model indicates the charged condition of the three-phase busbar by connecting a capacitor equivalent to a busbar support insulator and a luminous neon bulb in series, and uses the equivalent capacitor as a coupling capacitor for the pulse current method partial discharge test, and realizes online monitoring of partial discharge through the charged display module 3 integrated with the partial discharge acquisition amplifier 4, so that it has the dual functions of charged display and partial discharge online monitoring, uses the original insulator equivalent capacitor of the switch cabinet for monitoring, and does not need to add a capacitance sensor, reducing the installation cost and wiring, and is remotely transmitted to the operation monitoring platform through optical fiber communication for the convenience of monitoring by the operating personnel, and simulates the local discharge on the original loop monitored equipment. The discharge module 9 applies a pulse of a certain discharge amount to simulate partial discharge, and observes whether the partial discharge amount displayed on the operation monitoring platform is consistent with the partial discharge amount applied by the monitored equipment. If not, the measuring instrument is adjusted to make them consistent. The measurement and calibration of this technology are carried out when the switch cabinet is online. The infrared imaging module 2 is used to infrared image the cable connector head to monitor the connection status of the cable connector in real time. The terminal intelligent monitoring and early warning system is used to capture accident signs, early warning, prevent failures, and reduce the occurrence of sudden vicious accidents. The maintenance plan is determined according to the equipment status, so that hidden dangers can be discovered in time at the embryonic stage, the safety of the equipment is improved, and the "condition maintenance" of equipment operation and maintenance is truly realized.

[0017] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. The submarine cable terminal intelligent monitoring and early warning system is characterized by: The invention comprises a switch cabinet device (1), an infrared imaging module (2), a charged display module (3), a partial discharge acquisition amplifier (4), a remote communication module (5), an operation monitoring center (6), a partial discharge analysis module (7) and an early warning module (8). The switch cabinet device (1) is provided with an infrared imaging module (2). The switch cabinet device is provided with a charged display module (3) connected thereto. The charged display module (3) is fixedly provided on the outside of the cabinet door of the switch cabinet device (1). The charged display module (3) is connected thereto. The switch cabinet device (1) is provided with a remote communication module (5). The infrared imaging module (2) and the partial discharge acquisition amplifier (4) are respectively connected to the operation monitoring center (6) via the remote communication module (5). The operation monitoring center (6) is provided with a partial discharge analysis module (7). The partial discharge analysis module (7) is connected to the early warning module (8). The early warning module (8) is provided on the operation monitoring center (6).

2. The intelligent monitoring and early warning system for submarine cable terminals according to claim 1, characterized in that: There are a plurality of infrared imaging modules (2), and each of the infrared imaging modules (2) is directly facing a cable connection portion in the switch cabinet device (1).

3. The intelligent monitoring and early warning system for submarine cable terminals according to claim 1, characterized in that: The charged display module (3) comprises an equivalent capacitor and a charged indicator light, and the equivalent capacitor is connected to a partial discharge collection amplifier (4).

4. The intelligent monitoring and early warning system for submarine cable terminals according to claim 1, characterized in that: The charged display module (3) is provided with an independently powered simulated partial discharge module (9), the simulated partial discharge module (9) and the partial discharge acquisition amplifier (4), and the simulated partial discharge module (9) is connected to an operation monitoring center (6) via a remote communication module (5).

5. The intelligent monitoring and early warning system for submarine cable terminals according to claim 1, characterized in that: The remote communication module (5) is connected to the operation monitoring center (6) via a submarine cable optical fiber, and the outer sheath of the submarine cable optical fiber is provided with an armored shielding wire tube.

6. The intelligent monitoring and early warning system for submarine cable terminals according to claim 1, characterized in that: The operation monitoring center (6) is connected to an independent power supply.

7. The intelligent monitoring and early warning system for submarine cable terminals according to claim 1, characterized in that: The early warning module (8) is provided with an early warning data threshold and an over-limit alarm.

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