Power transmission line online monitoring circuit and intelligent insulator suspension ring

Abstract

The invention brings forward a power transmission line online monitoring circuit and an intelligent insulator suspension ring. The online monitoring circuit is integrated with a flashover monitoring function, a micro meteorology monitoring function, a leakage current monitoring function and a power transmission line icing monitoring function. At the same time, the monitoring circuit is combined with an insulator suspension ring. Through embedding a strain sensor, a leakage current sensor, a flashover sensor, a leakage current theft power supply module, a Beidou/GPS positioning module, a wireless signal transmission module and the like into the suspension ring, the insulator suspension ring becomes the intelligent insulator suspension ring with an online monitoring function, the intelligent suspension ring has a lead weight online monitoring function, an integrated leakage current online monitoring function, a flashover counting function and a positioning function, and the effectiveness and real-time performance of power transmission line sate monitoring are substantially improved.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of the state of power transmission equipment, in particular to an on-line monitoring circuit of a power transmission line. In addition, the invention also relates to an intelligent insulator suspension ring carrying the on-line monitoring circuit. Background technique [0002] In recent years, with the development of power system condition maintenance work and the construction of smart grid, the online monitoring technology of transmission lines has developed rapidly. In the 2019 National Smart Grid Planning General Report, it was proposed to increase the research and development of transmission line status monitoring devices and systems, and fully build a transmission equipment status monitoring system covering the entire network for headquarters and provincial companies. Using advanced measurement, information, Communication and control technologies, based on the centralized online m...

AI Technical Summary

Problems solved by technology

[0004] 1) The reliability of the product is poor. According to the statistics of the products installed by China Southern Power Grid from 2008 to the end of 2010 in May 2011, the online operation rate of the products is less than 40%;

[0005] 2) The practicality of the product function is not high. For example, the icing condition of the conductor is analyzed by measuring the tension of the conductor and the hardware under the icing condition. Since the icing calculation models of various manufacturers are not uniform, the calculation error is too large and false alarms are generated. and other phenomena;

[0006] 3) The volume and weight of the equipment are too large, which makes it difficult to install and maintain on site. The weight of the equipment generally reaches more than 50 kg, and some even have a total weight of more than 1 ton for the whole set of ice monitoring equipment.

[0007] 4) There are misjudgments in environmental monitoring and icing judgment, the accuracy rate is not high, and the sensitivity is not high

[0008] 5) Various monitoring functions such as integrated environmental monitoring, pollution flashover / thunder flashover, and icing tension monitoring cannot be realized within the limited weight and volume

[0009] 6) The existing monitoring devices are all independent equipment, which need to be installed independently on the transmission line, and additional assembly parts on the transmission line will be added

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