CN212844320U

CN212844320U - Online monitoring system for vibration signals of high-voltage circuit breaker

Info

Publication number: CN212844320U
Application number: CN202022282315.3U
Authority: CN
Inventors: 王建堂; 张茗
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-03-30
Anticipated expiration: 2030-10-14

Abstract

The utility model provides an on-line monitoring system of high voltage circuit breaker vibration signal, belongs to the electric power monitoring system field, its characterized in that: the system comprises a field data acquisition module and a remote management module; the field data acquisition module is electrically connected with the remote management module through a converter; the field data acquisition module comprises a monitoring unit and a lower computer; the remote management module comprises an upper computer; the converter comprises a lower converter and an upper converter; the monitoring unit is electrically connected with the lower computer; the lower computer is electrically connected with the lower converter; the lower converter is electrically connected with the upper converter; the upper converter is electrically connected with the upper computer. The vibration signals of the circuit breaker acquired on site are monitored and analyzed, potential faults can be found as early as possible, preventive measures are taken in time, and the reliability of power grid operation is guaranteed, so that premature or unnecessary maintenance is reduced, the pertinence of high-voltage circuit breaker maintenance is improved, the service life of switch equipment is prolonged, and the reliability of a power system is improved.

Description

Online monitoring system for vibration signals of high-voltage circuit breaker

Technical Field

The utility model belongs to electric power monitoring system field especially relates to a high voltage circuit breaker vibration signal's on-line monitoring system.

Background

High voltage circuit breakers are one of the most important switching devices in electrical power systems. The high-voltage circuit breaker can play a role in switch control in switching operation when the power grid equipment enters or leaves a network, so that when the power equipment or a circuit has a fault, the power equipment or the circuit with the fault can be quickly removed through the switch operation of the high-voltage circuit breaker. At present, the maintenance of the high-voltage circuit breaker is mainly judged by experience, so that the condition of untimely or premature or unnecessary maintenance exists, and the maintenance effect and the working efficiency are influenced.

Disclosure of Invention

The utility model aims at solving the above problem, provide a high voltage circuit breaker vibration signal's on-line monitoring system.

The utility model discloses an on-line monitoring system of high voltage circuit breaker vibration signal, including on-the-spot data acquisition module and remote management module; the field data acquisition module is electrically connected with the remote management module through a converter; the field data acquisition module comprises a monitoring unit and a lower computer; the remote management module comprises an upper computer; the converter comprises a lower converter and an upper converter; the monitoring unit is electrically connected with the lower computer; the lower computer is electrically connected with the lower converter; the lower converter is electrically connected with the upper converter; and the upper converter is electrically connected with the upper computer.

Preferably, the utility model discloses an online monitoring system of high voltage circuit breaker vibration signal, the monitoring unit includes power module, voltage and current monitoring module, gas monitoring module, sensor and signal fusion module; the voltage and current monitoring module, the gas monitoring module and the sensor are electrically connected with the power supply module; the voltage and current monitoring module, the gas monitoring module and the sensor are all electrically connected with the signal fusion module; and the signal fusion module is electrically connected with the lower computer in a serial port communication mode.

Preferably, high voltage circuit breaker vibration signal's on-line monitoring system, the sensor includes slip resistance-type displacement sensor, vibration acceleration sensor and hall magnetic force balanced type current sensor.

Preferably, in the system for monitoring vibration signals of a high-voltage circuit breaker, the lower computer is provided with an analog information acquisition card, a data acquisition card and an RS232-C communication interface; the RS232-C communication interface is electrically connected with the lower converter in a field bus mode.

Preferably, high voltage circuit breaker vibration signal's on-line monitoring system, gaseous monitoring module is sulfur hexafluoride gas monitoring module.

Preferably, in the system for on-line monitoring of vibration signals of a high-voltage circuit breaker of the present invention, the upper computer is provided with a display module, a database and an RS485 communication interface; and the RS485 communication interface is electrically connected with the upper converter.

Preferably, in the system for online monitoring of vibration signals of a high-voltage circuit breaker of the present invention, the lower converter is a 485 converter; the upper converter is a 232 converter.

High voltage circuit breaker vibration signal's on-line monitoring system monitors the analysis to the circuit breaker vibration signal that the scene was gathered, knows high voltage circuit breaker's running state, can discover potential trouble as early as possible, in time takes precaution, ensures the reliability of electric wire netting operation to reduce too early or unnecessary and maintain, improve the pertinence that high voltage circuit breaker maintained, promote switchgear's life, improve electric power system's reliability.

Drawings

Fig. 1 is a schematic block diagram of the structure of the on-line monitoring system for the vibration signal of the high-voltage circuit breaker according to the present invention;

fig. 2 is a schematic structural view of an on-line monitoring system for vibration signals of a high-voltage circuit breaker according to an embodiment of the present invention;

the monitoring system comprises a high-voltage circuit breaker 1, a monitoring unit 2, a lower computer 3, a lower computer 4, an upper computer 5 and an upper computer 6.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

The on-line monitoring system for the vibration signal of the high-voltage circuit breaker 1 of the utility model comprises a field data acquisition module and a remote management module as shown in figure 1; the field data acquisition module is electrically connected with the remote management module through a converter; the field data acquisition module comprises a monitoring unit 2 and a lower computer 3; the remote management module comprises an upper computer 6; the converters include a lower converter 4 and an upper converter 5; the monitoring unit 2 is electrically connected with the lower computer 3; the lower computer 3 is electrically connected with the lower converter 4; the lower converter 4 is electrically connected with the upper converter 5; the upper converter 5 is electrically connected with the upper computer 6.

The monitoring unit 2 in the disclosed example comprises a power supply module, a voltage and current monitoring module, a gas monitoring module, a sensor and a signal fusion module; the voltage and current monitoring module, the gas monitoring module and the sensor are electrically connected with the power supply module; the voltage and current monitoring module, the gas monitoring module and the sensor are all electrically connected with the signal fusion module; the signal fusion module is electrically connected with the lower computer 3. In the embodiment of the present disclosure, the sensor includes a sliding resistance type displacement sensor, a vibration acceleration sensor, and a hall magnetic force balanced type current sensor.

In the embodiment of the present disclosure, the lower computer 3 is provided with an analog information acquisition card, a data acquisition card and an RS232-C communication interface; the RS232-C communication interface is connected with the lower converter 4 in a field bus mode. The lower computer 3 is connected with the signal fusion module in a serial port communication mode; the gas monitoring module is a sulfur hexafluoride gas monitoring module. The upper computer 6 is provided with a display module, a database and an RS485 communication interface; and the RS485 communication interface is electrically connected with the upper converter 5. The lower converter 4 is a 485 converter; the upper converter 5 is a 232 converter.

In the embodiment of the present disclosure, as shown in fig. 2, the three-way high-voltage circuit breaker 1 is monitored by using the on-line monitoring system for the vibration signal of the high-voltage circuit breaker 1 according to the embodiment of the present disclosure, the monitored high-voltage circuit breaker 1 is monitored by using the voltage and current monitoring module, the sulfur hexafluoride gas monitoring module, the sliding resistance type displacement sensor, the vibration acceleration sensor and the hall magnetic force balanced type current sensor, and various signals are monitored and collected, the collected signal data is uniformly transmitted to the signal fusion module for processing and integration, and then transmitted to the lower computer 3, and transmitted to the upper computer 6 via the lower computer 3 for analysis and processing again; the upper computer 6 analyzes the circuit breaker vibration signals collected on site by using a wavelet transform analysis method, and reflects the running smoothness of the movable contact of the circuit breaker and the running stability of mechanical parts. Performance analysis shows that the strongest frequency band reflecting the change of the mechanical state of the high-voltage circuit breaker 1 is concentrated on the high-frequency part of the acquired signal, and the acquired vibration signal is approximately a smooth random process when the high-voltage circuit breaker 1 works normally. Finally, the analysis result is combined with preset data stored in a database arranged in the upper computer 6 to be compared, so that a worker can find potential faults as early as possible, preventive measures are taken in time, the operation reliability of a power grid is guaranteed, premature or unnecessary maintenance is reduced, the maintenance pertinence of the high-voltage circuit breaker 1 is improved, the service life of the switch equipment is prolonged, and the reliability of a power system is improved.

The power supply module in the embodiment of the disclosure is a 24V standard switching power supply; the voltage and current monitoring module adopts 24 circuits of ZH-40243 type of Zhongzhuan intelligence; the sulfur hexafluoride gas monitoring module adopts a Chuangxin CK-800 fixed model; the sliding resistance type displacement sensor adopts a PK series sliding block type displacement sensor of GEFRAN; the vibration acceleration sensor adopts a signal-constant electron YD series; other components or sensors are made of domestic common well-known brands.

While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides an on-line monitoring system of high voltage circuit breaker vibration signal which characterized in that: the system comprises a field data acquisition module and a remote management module; the field data acquisition module is electrically connected with the remote management module through a converter; the field data acquisition module comprises a monitoring unit (2) and a lower computer (3); the remote management module comprises an upper computer (6); the converter comprises a lower converter (4) and an upper converter (5); the monitoring unit (2) is electrically connected with the lower computer (3); the lower computer (3) is electrically connected with the lower converter (4); the lower converter (4) is electrically connected with the upper converter (5); the upper converter (5) is electrically connected with the upper computer (6).

2. The on-line monitoring system for vibration signals of a high voltage circuit breaker according to claim 1, characterized in that: the monitoring unit (2) comprises a power supply module, a voltage and current monitoring module, a gas monitoring module, a sensor and a signal fusion module; the voltage and current monitoring module, the gas monitoring module and the sensor are electrically connected with the power supply module; the voltage and current monitoring module, the gas monitoring module and the sensor are all electrically connected with the signal fusion module; the signal fusion module is electrically connected with the lower computer (3).

3. The on-line monitoring system for vibration signals of a high voltage circuit breaker according to claim 2, characterized in that: the sensor comprises a sliding resistance type displacement sensor, a vibration acceleration sensor and a Hall magnetic force balanced type current sensor.

4. The on-line monitoring system for vibration signals of a high voltage circuit breaker according to claim 3, characterized in that: the lower computer (3) is provided with an analog information acquisition card, a data acquisition card and an RS232-C communication interface; the RS232-C communication interface is electrically connected with the lower converter (4).

5. The on-line monitoring system for vibration signals of a high voltage circuit breaker according to claim 4, wherein: the gas monitoring module is a sulfur hexafluoride gas monitoring module.

6. The on-line monitoring system for vibration signals of a high voltage circuit breaker according to claim 5, wherein: the upper computer (6) is provided with a display module, a database and an RS485 communication interface; and the RS485 communication interface is electrically connected with the upper converter (5).

7. The on-line monitoring system for vibration signals of a high voltage circuit breaker according to claim 6, wherein: the lower converter (4) is a 485 converter; the upper converter (5) is a 232 converter.