Lightning stroke line breaking alarm device for 10-kV overhead line based on acceleration sensor
An acceleration sensor, overhead line technology, applied in overhead installation, alarms, measuring devices, etc., can solve the problems of less consideration of judgment, repair and other problems, so as to be conducive to emergency repair and rapid restoration of power supply, reduce acceleration errors, and prevent accidents. Effect
Active Publication Date: 2019-03-15
DATONG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER
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[0003] However, in the prior art, how to prevent the overhead line from being disconnected due to lightning strikes is the main focus. Usually, lightning arresters or lightning protection disconnection devices are installed to prevent the overhead line from being disconnected due to lightning strikes, and less consideration is given to how to proceed after the disconnection. Judgment, repair and effective early warning of nearby personnel, so as not to cause harm to personnel
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[0020] In order to more clearly understand the above purpose, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0021] In the following description, a lot of specific details are set forth in order to fully understand the application, however, the application can also be implemented in other ways different from those described here, therefore, the protection scope of the application is not limited by the following disclosure Limitations of specific embodiments.
[0022] combine Figure 1 to Figure 3 Examples in this application will be described.
[0023] Such as figure 1 As shown, the present embodiment provides a 10kV overhead line lightning strike disconnection alarm de...
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The invention discloses a lightning stroke line breaking alarm device for a 10-kV overhead line based on an acceleration sensor. The line breaking alarm device involves that the acceleration sensor isarranged on the overhead line, an output end of the acceleration sensor is connected to a control end of an alarm unit, and the acceleration sensor is used for detecting acceleration information during the state change of the overhead line; a detection end of a control unit is connected to the output end of the acceleration sensor, and the control unit is configured to generate and send a line breaking signal when determining that the acceleration information is greater than or equal to a preset threshold; a receiving end of the alarm unit is connected to an output end of the control unit, and the alarm unit is used for generating alarm information according to the line breaking signal. The lightning stroke line breaking alarm device for the 10-kV overhead line based on the acceleration sensor has the advantages that the reliability and accuracy of the lightning stroke line breaking detection are improved, the possibility of false alarm caused by over voltage is reduced, the maintenance efficiency of lightning stroke line breaking is improved, and the emergency maintenance and rapid recovery of power supply are facilitated.
Description
technical field [0001] The present application relates to the technical field of lightning strike disconnection detection, in particular, to an acceleration sensor-based lightning strike disconnection alarm device for 10kV overhead lines. Background technique [0002] At present, the transmission lines of my country's distribution network are mainly insulated lines, and the main reason for the failure of insulated lines is lightning strikes. The occurrence of lightning disconnection can be summarized into the following two steps: (1) Lightning overvoltage breaks down the insulating layer, causing the wire to discharge to the ground. (2) After the breakdown caused by lightning, the system power frequency overvoltage applied to the discharge channel will generate a power frequency short-circuit current, and the power frequency short-circuit current will continue to cause the arc to burn, thereby burning the wire. The short-circuit current of the system is related to the opera...
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IPC IPC(8): G08B21/18G08B7/06G01D21/02H02G7/00
CPCG01D21/02G08B7/06G08B21/185H02G7/00
Inventor 赵国伟顾金铭孟世军翟利军郭鹏飞郭鑫薛辉冯利伟
Owner DATONG POWER SUPPLY COMPANY OF STATE GRID SHANXI ELECTRIC POWER
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