The Current Monitoring Sensors is designed to capture and analyze the parameters of lightning strikes on structures like transmission towers and wind turbine blades in real-time. Its working principle centers on transient magnetic field sensing and high-speed data acquisition. It typically uses a Rogowski coil or a current transformer installed at the grounding path. When a massive, impulsive lightning current (kA to hundreds of kA) flows through the conductor, it generates a rapidly changing magnetic field. This induces a proportional voltage signal in the sensor, which is then digitized by a high-speed data acquisition unit for waveform recording and parameter calculation.
Product Features
1. High Dynamic Range and Bandwidth: Capable of accurately measuring the extreme current amplitudes and the fast rise/fall times (microseconds) characteristic of lightning strokes.
2. Real-Time Monitoring and Remote Access: Provides instant data on strike occurrence, time, and intensity. This data is often transmitted via GSM/GPRS, fiber optics, or satellite to a central server for remote analysis.
3. Robustness and Reliability: Engineered to withstand the harsh electromagnetic environment during a lightning strike and operate reliably in outdoor conditions for long periods.
Common Applications
This system is vital for lightning research and asset protection:
1. Transmission Line & Substation Monitoring: Assessing lightning performance, identifying fault causes, and optimizing grounding systems.
2. Renewable Energy: Protecting wind farms by monitoring strikes on turbines and analyzing their impact.
3. Aerospace & Railways: Monitoring lightning strikes on critical infrastructure like radar stations, signaling systems, and catenary wires.
