Real-Time Monitoring of Cable Sag and Overhead Power Line Parameters Based on a Distributed Sensor Network and...

Area of Science:

• Electrical Engineering
• Power Systems Engineering
• Sensor Technology

Background:

• Real-time monitoring of Overhead Power Lines (OPL) is essential for electricity transmission reliability.
• Existing methods for sag monitoring may lack accuracy or real-time capabilities.
• The need for a robust system to detect OPL cable sag and potential defects is critical.

Purpose of the Study:

• To develop and implement a hardware and software system for online monitoring of OPL cable sag.
• To present a mathematical model and algorithmic methods for accurate sag calculation.
• To ensure data security and system reliability through diverse sensor integration and secure data transmission protocols.

Main Methods:

• Development of a mathematical model based on differential equations for OPL cable sag calculation.
• Integration of a variety of sensors for direct sag measurement and cross-verification.
• Implementation of ModBUS and ZigBee protocols for secure data transmission.
• Utilisation of a web server, MySQL database, and IoT server for data visualization with cybersecurity measures.
• Numerical simulations in Matlab and real-time implementation using LabVIEW.

Main Results:

• A functional hardware and software system for online OPL cable sag monitoring was successfully implemented.
• The system achieved a global accuracy of 0.1% in sag calculation.
• A defect observer for sensors was developed, enhancing system reliability.
• Secure data visualization methods were established for both intranet and internet access.

Conclusions:

• The implemented system provides accurate, real-time monitoring of OPL cable sag.
• The integration of diverse sensors and secure protocols enhances system reliability and cybersecurity.
• This technology contributes to the improved safety and efficiency of electricity transmission infrastructure.