The power system industry faces risks of equipment corrosion and operational faults from stray currents, and the Stray Current Data Logger is a critical mitigation tool. It enables real-time monitoring and data recording, resolving pain points like hidden current leakage, data loss, and delayed fault response.
Substation Grounding System Monitoring: Safeguarding Equipment Integrity
Firstly, substation grounding grids are vulnerable to stray current corrosion, which impairs grounding performance. The Stray Current Data Logger captures AC/DC stray currents (range: 0~100A) with ±0.1% accuracy, monitoring grounding grid potential shifts.
Moreover, it supports 24/7 continuous recording, storing up to 1 million data points for trend analysis. For example, a 220kV substation used it to detect abnormal stray currents from adjacent rail systems, avoiding grounding grid corrosion and extending service life by 20%. Additionally, it triggers audible alarms for over-threshold currents, enabling timely intervention.
Power Cable Line Monitoring: Preventing Insulation Degradation
Underground power cables (HV/MV) often suffer stray current-induced insulation damage. The Stray Current Data Logger installs along cable routes, monitoring leakage currents from cable sheaths and joints.
Furthermore, it features IP67 protection, withstanding harsh underground environments (moisture, temperature fluctuations). Besides, it transmits data wirelessly (LoRa/Wi-Fi) to a central platform, eliminating manual data collection. This solution helped a power utility identify a faulty cable joint with stray current leakage, reducing insulation breakdown risks by 35%.
DC Traction Power System Integration: Mitigating Cross-System Interference
Secondly, DC traction systems (railways, metros) generate significant stray currents that interfere with nearby power grids. The Stray Current Data Logger monitors current leakage from traction rails to power system components.
Additionally, it syncs with traction power controllers, correlating stray current levels with traction load changes. For instance, a metro power system used it to map stray current distribution, optimizing traction return circuit design and reducing interference with adjacent 110kV lines. Consequently, it minimizes cross-system operational risks and compliance violations.
Renewable Energy Grid Connection: Monitoring Current Leakage
Renewable energy systems (solar, wind) connected to the grid may produce stray currents due to inverter operation. The Stray Current Data Logger monitors leakage currents at grid connection points, ensuring compliance with IEC 61000 standards.
Moreover, it analyzes current harmonic components, identifying stray current sources from inverter switching. Furthermore, it integrates with grid management systems, providing real-time data for grid stability adjustment. A wind farm used it to resolve stray current issues from wind turbine inverters, improving grid connection reliability by 28%.
Data Analysis & Predictive Maintenance: Optimizing Power System Operations
Finally, power utilities rely on data-driven insights for predictive maintenance. The Stray Current Data Logger’s built-in analytics function identifies corrosion risk trends from historical data.
Besides, it generates standardized reports (PDF/Excel) for regulatory compliance and maintenance planning. Additionally, its cloud connectivity allows remote data access, enabling engineers to monitor multiple sites from a central dashboard. For example, a power utility used it to predict grounding grid corrosion in 5 substations, scheduling proactive maintenance and reducing unplanned downtime by 40%.
Core Value: Proactive Protection for Power System Reliability
The Stray Current Data Logger combines high-precision monitoring, continuous data recording, and robust environmental adaptation. It addresses power systems’ unique challenges—stray current hidden risks, cross-system interference, and maintenance efficiency.
Compared to traditional manual testing, it eliminates blind spots and enables proactive fault mitigation. Ultimately, it is not just a monitoring device but a solution that safeguards power system assets and ensures stable, safe operations.
Jetronl Instruments Co., Ltd. has specialized in the electronic measurement field for 35 years, covering various measurement needs across the entire electronic industry chain and providing precise measurement support.
