Transmission line anti-breakage monitoring system (transmission line image monitoring, transmission line online monitoring, transmission line wildfire prevention monitoring)
1. Overview
With the rapid development of social economy, all walks of life The industry has put forward higher requirements for the quality and quantity of power supply. Due to the uncertainty of the environment of transmission lines in the power grid, the safety of line operation has become an important indicator of grid reliability. Because transmission lines extend tens or even hundreds of kilometers vertically and horizontally, they are in different environments. Therefore, high-voltage transmission lines are greatly affected by their geographical environment and climate. Every year, power grid blackouts are mainly caused by line accidents.
In the past, transmission line inspections mainly relied on periodic inspections by operation and maintenance personnel. Although hidden dangers in equipment can be found, due to its own limitations, there is a lack of detection of special environments and climates, and the lines cannot be grasped in a timely manner during the vacuum period of the inspection cycle. Changes in external forces on the corridor can easily cause line accidents before the next inspection arrives due to lack of monitoring. Therefore, the application of the transmission line online monitoring system was born. It uses wireless (/R/) transmission to monitor the transmission line channel environment, temperature, humidity, wind speed, wind direction, leakage current, conductor temperature, wind deflection, sag, galloping, Real-time monitoring of parameters such as insulator contamination, surrounding construction conditions, tilt of towers, and disasters such as wildfires can provide early warning of abnormal line conditions. By monitoring various effective parameters of the line, the management level of safe and economical operation of transmission lines can be improved and provide for Provide necessary reference for condition maintenance work of transmission lines.
2. System Features
The transmission line online monitoring system is installed on the tower, powered by solar cells, and uses the wireless public network 3/R/ communication transmission method to monitor the remote video, micro-climate, and tower of the transmission line. Line conditions such as tilt, anti-theft alarm, and mountain fire are monitored and uploaded to the monitoring center. In the monitoring center, not only can you see on-site images, but you can also analyze, diagnose and predict the line operating status in real time through the data collected by various monitoring, and take appropriate measures. In order to eliminate and reduce dangers and ensure the safe and stable operation of transmission lines.
The transmission line online monitoring system with a single function can also be installed on the transmission line, using high-voltage power supply to provide power for the device.
The transmission line monitoring system includes multiple subsystems, which users can freely combine according to their needs:
, transmission line video monitoring system
, transmission line micro-meteorological monitoring system
Transmission line mountain fire prevention Monitoring system
, Transmission line insulator leakage current online monitoring system
, Transmission line wire (fitting) temperature online monitoring system
, Transmission line wind deflection, galloping, sag online monitoring system
> , Transmission line tower tilt online monitoring system
3. System composition
The transmission line online monitoring system consists of two parts, namely the data collection front-end (solar power supply or high-voltage power collection, data collection system, and communication system etc.) and a back-end analysis and processing system. The acquisition front-end is a high-performance data acquisition host. Its main power supply is solar panels or high-voltage power. It analyzes and collects various surrounding data, such as temperature, humidity, wind speed, etc., through preset programs at regular intervals. The camera The Doppler radar for wildfire prevention can continuously monitor the surrounding environment in real time. After the front-end system processes the collected data, it can be transmitted to the back-end control center in a timely manner through wireless (/R/) transmission. The back-end analysis and processing system can analyze the relevant data collected and take targeted preventive measures for relevant towers based on the analysis results to reduce the occurrence of line accidents.
, Video monitoring system
Due to economic development, various building construction renovations are frequent. In addition, pole and tower lines in the wilderness are extremely vulnerable to damage from external forces. The resulting line tripping accidents are increasing year by year. The traditional inspection method can no longer meet the existing safety needs.
Therefore, in the power industry, there is an urgent need for a powerful monitoring and monitoring method to monitor the surrounding conditions and environmental parameters of transmission lines around the clock, so that the transmission lines can operate in a visible and controllable manner. The remote monitoring system for dangerous points of overhead transmission lines uses advanced digital video compression technology to transmit the situation around the line to the background monitoring center in real time through wireless communication, and can set up programs to alarm for behaviors that endanger line safety. Infrared detection technology is used to monitor poles and towers in high-risk areas of transmission lines around the clock, and if any hidden dangers are discovered, they can immediately take photos and upload them for archiving. Effectively reduce power accidents caused by external force damage such as building construction around the lines. In areas that are difficult for inspection personnel to reach, the number of inspections is greatly reduced, opening up new ideas for inspections and condition maintenance of transmission lines. The system software has powerful query, comparison and analysis functions. Information on equipment and environmental changes can be understood in a timely manner, providing factual basis for accident prevention and post-event analysis.
, Micro-meteorological monitoring system
Due to its decentralized characteristics, the environment in which transmission lines are located changes a lot, and it is easy to cause line failures due to wind deflection, lightning strikes, pollution, etc., especially changes in the local environment can be grasped in a timely manner More online data monitoring is needed.
The micrometeorological monitoring system mainly conducts online monitoring of micrometeorological environment data in transmission line corridors, etc. It can analyze meteorological parameters and rigorous data such as temperature, humidity, wind speed, wind direction, air pressure, rainfall, light radiation and other measured monitoring points. . Through regular data transmission, line technicians can timely grasp the climate change rules of the line operating environment based on the data curve, so as to take corresponding measures (such as installing zinc oxide arresters in minefields, adjusting climbs in dirty areas, etc.) to prevent power outages on the lines. .
Wildfire Prevention Monitoring System
Some transmission lines are erected in mountains and forests. Wildfires caused by dry climate in spring and autumn will pose a serious threat to transmission lines.
The transmission line wildfire prevention monitoring system uses multi-spectral Doppler radar to monitor the mountains and forests around the line in real time, uploads the data to the monitoring center, and immediately reports a fire once a fire is discovered, prompting the personnel on duty to take appropriate measures to avoid or reduce the risk. Power supply accidents caused by wildfires.
Transmission line anti-breakage monitoring system