Online monitoring system for galloping of overhead power transmission line

Abstract

The invention belongs to the technical field of power transmission line state monitoring, and discloses an online monitoring system for galloping of an overhead power transmission line. The online monitoring system is characterized in that the online monitoring system for the line of each span consists of a plurality of monitoring substations, two monitoring master stations and a background monitoring upper computer, wherein the monitoring substations are arranged on the transmission line; the two monitoring master stations are arranged on towers respectively; the background monitoring upper computer is arranged in a monitoring center; the two master stations and the plurality of substations monitor the galloping state of the line of each span; the substations accurately position the galloping of the line by utilizing acceleration sensors, and upload positioning data to the master stations through short-range radio frequency; each master station receives galloping monitoring data from four nearby substations, and uploads the monitoring data and environmental meteorological data to the background monitoring upper computer through a general packet radio service (GPRS); and when each master station synchronizes a clock through a global positioning system (GPS) module, the synchronism of the uploaded data is ensured. The online monitoring system has a small volume, low influence on mechanical properties of the line, high dynamic performance and high data monitoring accuracy, is low in cost, and can work round the clock.

Description

Technical field [0001] The invention belongs to the technical field of power transmission line state monitoring, and relates to an overhead power transmission line galloping online monitoring system, in particular an overhead line galloping online monitoring system based on short-range radio frequency / acceleration sensor / GPS. Background technique [0002] The reliability of power grid transmission depends to a large extent on the reliability of the working state of the transmission line. Overhead transmission lines operate in open air for a long time and are greatly affected by natural conditions such as wind, rain, ice, thunder and lightning, and their working status cannot be guaranteed. Especially when abnormal conditions such as wind deviation and galloping occur, the line may flashover, trip, or even collapse the tower. [0003] my country has a vast territory and a volatile climate, with different patterns and internal mechanisms of abnormal wind and galloping states. Espec...

AI Technical Summary

Problems solved by technology

The Chinese invention patent "On-line monitoring system for galloping and wind deviation of transmission line conductors based on differential GPS" with the application publication number "CN 101986100A" discloses an online monitoring system for wind deviation and galloping of transmission lines based on differential GPS. Although its positioning More accurate, but need to build a differential GPS base station, the cost is too high

The Chinese invention patent "on-line galloping monitoring system of transmission lines based on acceleration sensor" with the application publication number "CN 101571413A" discloses an online galloping monitoring system of transmission lines based on acceleration sensors. One line span is equipped with one master station and multiple The distance between the sub-station and the main station is relatively long, and the data of the sub-station needs to be uploaded to the main station by a high-power radio frequency. The high-power radio frequency module is large in size and high in cost, which will affect the dynamic characteristics of the line dancing and pose a potential threat to the line dancing.

Images