High voltage transmission conductor sag measuring device and method

Abstract

The invention discloses a high voltage transmission conductor sag measuring device. The measuring device comprises a measuring device shell body which is arranged on a transmission conductor. A radar waveguide opening and a radio frequency antenna are arranged on the surface of the measuring device shell body respectively. A monitoring device main control unit is arranged in the measuring device shell body. The monitoring device main control unit comprises a central processing unit which is connected with a radar sensor unit and a power supply unit respectively through wires. The central processing unit is further connected with a data monitoring terminal and a monitoring center respectively through a communication module. The invention further discloses a measuring method of the measuring device, wherein the radar sensor unit is used for transmitting collected sag information to the central processing unit, and then the central processing unit conducts calculation to obtain a transmission conductor sag value. The high voltage transmission conductor sag measuring device and method can monitor the changes in the sag of a high voltage transmission line in real time and transmit the monitoring data to the backstage monitoring center, thereby guaranteeing the safe operation of an electric power circuit.

Description

technical field [0001] The invention belongs to the technical field of power transmission and transformation equipment monitoring, and in particular relates to a high-voltage transmission conductor sag measurement device, and also relates to a method for measuring sag by the high-voltage transmission conductor sag measurement device. Background technique [0002] The sag of the high-voltage transmission conductor is an important indicator for the safe operation of the line. The size of the sag of the conductor should be controlled within a certain range. And cause disconnection grounding fault, even destroy the pole tower structure erecting the wire or the wind blows the cycloid to cause phase-to-phase short circuit, generate arc and spark to ignite the surrounding combustibles. [0003] In recent years, due to the sharp increase in power load, many transmission lines have increased the maximum allowable temperature of the conductor from 70°C to 80°C in order to improve the ...

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Problems solved by technology

[0004] At present, people have proposed a variety of methods for the measurement and real-time monitoring of transmission line sag. The traditional transmission line sag measurement methods mainly include: the midpoint height method suitable for relatively flat terrain areas, and the method suitable for mountains and high mountains. Wired angle method and latitude plate observation method, but these measurement methods have a large workload, and sometimes are closely related to the safety of the life and property of the measurement staff

In addition, there are methods of measuring sag by tension or inclination, measuring sag by wire temperature, and measuring sag by stress, etc., but these methods are inconvenient to operate and have many measurement parameters, resulting in low accuracy of measured sag

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