Online monitoring system for power transmission line

Abstract

The invention discloses an online monitoring system for a power transmission line and relates to a wireless passive temperature measuring system for a high-voltage switch cabinet. The system is provided with a plurality of radio-frequency transmitting collector and sensors of which the quantity is matched with that of the radio-frequency transmitting collector, wherein a monitor is connected to the radio-frequency transmitting collector; a remote control center is connected to the monitor; the monitor comprises an analog/digital converting device, a central processing unit and a digital/analog converting device which are sequentially connected; a display unit is connected to the digital/analog converting device; an alarming device is connected to the central processing unit; and the remote control center consists of a data storage unit and a data display unit. The radio-frequency transmitting collector are used for transmitting signals and the sensors can be used for passively feeding back the signals, so that the temperature in the high-voltage switch cabinet can be measured accurately and timely and the safety is high; and in addition, the sensors in the high-voltage switch cabinet passively feed back the signals and are not influenced by an electric field and a magnetic field in the high-voltage switch cabinet, and thus measurement data are accurate. Power supply accidents due to overheat of the high-voltage switch cabinet are effectively avoided.

Description

technical field [0001] The invention relates to an on-line monitoring system of a power transmission line. Background technique [0002] Transmission lines are exposed to the wild, and under the influence of bad weather such as wind, rain and snow, various failures often occur. A fault in the transmission line will lead to a partial paralysis of the power supply network. If the fault cannot be discovered and repaired in time, it will bring great losses to the property of the people of the country. At present, the transmission lines that may be faulty are often found through manual inspection, so as to repair the transmission lines in advance and avoid power outages due to faults. [0003] However, due to the large area of ​​the transmission network, high power saving, and complex equipment, the method of manual inspection has the following disadvantages: [0004] 1. The transmission lines are widely distributed, and because the transmission lines are often arranged in the ...

AI Technical Summary

Problems solved by technology

[0004] 1. The transmission lines are widely distributed, and because the transmission lines are often arranged in the wild, the traffic is poor and the road conditions are not good, the investigators can only rely on walking to complete the investigation, which greatly increases the workload of the investigators

[0005] 2. There are many nodes that may fail, and there are many types of faults that may occur. The use of manpower to check often leads to omissions, and the reliability of the check is poor.

[0006] 3. Comprehensive investigation, no pertinence, poor investigation efficiency

[0007] 4. It takes a long time to check once, and it is difficult to find problems in time, leading to accumulation of problems and even accidents

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