Transmission line abnormal state monitoring and Fault location integration is a key device to ensure the safe and stable operation of power systems, and its core functions include real-time monitoring, fault location, intelligent analysis and remote control. The following is an introduction to its main functions and application scenarios:
I. Introduction to the main functions
1. Real-time monitoring and data collection
Through the sensors (such as temperature, vibration, current transformer, etc.) installed on the transmission line, real-time collection of line voltage, current, temperature, vibration and other operating parameters, a comprehensive grasp of the line status.
Supports instant detection and early warning of abnormal working conditions (e.g. overload, three-phase imbalance, insulation breakdown, etc.).
2. Fault localization
Using traveling wave signal analysis, big data processing and artificial intelligence algorithms, it can quickly lock the fault point, and the positioning accuracy can be up to 300 meters or less, and the reliability of positioning of some devices is up to 99%.
Fault types (e.g. lightning strike, short circuit, grounding, etc.) can be distinguished, and the recognition accuracy can reach 90%-95%.
3. Intelligent analysis and early warning
Through historical data mining and machine learning, it predicts potential failure risks and realizes the shift from reactive response to proactive prevention.
Provides data visualization interface, generates operation reports, and assists operation and maintenance decision-making.
4. Remote control and communication
Support wireless communication technology (e.g. 4G/5G, LoRa) to realize remote interaction with the main control center and reduce the frequency of manual inspection.
Some devices have the function of remotely cutting off the power supply to the faulty area to prevent the accident from expanding.
5. Security and Reliability Guarantee
Anti-interference design, adapt to harsh environments (e.g. high temperature, high humidity, electromagnetic interference).
Some high-end devices integrate security encryption chips to ensure the security of data transmission and storage.
II. Application scenarios in the power grid
1、Improve the reliability of power supply
Through real-time monitoring and rapid fault localization, power outage time is shortened and economic losses are reduced. For example, after the introduction of related devices in a region of Jiangsu, the fault handling time was significantly reduced.
2、Reduce operation and maintenance costs
Remote control and intelligent analysis functions reduce the need for on-site inspections and save manpower and resources. A case shows that operation and maintenance costs are reduced by about 30%.
3. Preventive maintenance
Based on data analysis to predict equipment aging or potential failures, maintenance plans are developed in advance to extend equipment life.
4. Complex environmental adaptation
It is suitable for mountainous areas, forested areas and other areas with inconvenient transportation, solving the problems of low efficiency and high risk of traditional manual inspection.
III. Trends in industry development
Intelligent upgrade: Combine edge computing and AI to improve the real-time and accuracy of fault diagnosis.
Standardization and Compliance: Compliance with state secret algorithm standards (e.g. SM2/SM3) and power industry specifications (e.g. IEC 62351) to enhance data security.
Multi-system integration: linkage with SCADA and GIS systems to build a deep defense system for Power Internet of Things (PIoT).
