WUHAN – Wuhan Moen Intelligent Electrical Co., Ltd. has successfully completed – Wuhan Moen Intelligent Electrical Co., Ltd. has successfully completed the installation and commissioning of its MOEORW-W5085 Partial Discharge (PD) Online Monitoring System for generator units at a large-scale power plant. This project marks a major step forward in the plant's transition from scheduled maintenance to condition-based predictive maintenance, ensuring long-term reliability of critical generation assets.
Project Background & Objectives
Large generators are subject to continuous insulation stress from electrical, thermal, mechanical, and environmental factors. Undetected partial discharge can lead to progressive insulation failure, unplanned outages, and even severe accidents. The power plant needed a high-precision, robust online monitoring solution that could reliably detect weak PD signals in a complex electromagnetic environment.
After evaluating multiple options, the plant selected Moen's MOEORW-W5085 system for its proven sensitivity, anti-interference performance, and data analytics platform specifically designed for large rotating machinery.
Three-Phase Deployment
1. Pre-deployment Calibration & Testing
Moen engineers performed rigorous lab calibration and functional testing of the entire system – sensors, data acquisition units, and the main monitoring host – to verify sensitivity, accuracy, and noise immunity.
2. On-site Installation & System Integration
Under strict safety protocols, high-frequency PD sensors were installed at key positions on the generator stator windings, the monitoring host was placed in dedicated cabinets, and all wiring, grounding, and configuration were completed without interrupting plant operations.
3. Commissioning & Data Validation
Post-installation, the team conducted comprehensive verification including signal testing, channel calibration, and real-time PD analysis. The MOEORW-W5085 accurately captures and displays PD magnitude, phase-resolved partial discharge (PRPD) patterns, and trend data – fully meeting the plant's technical specifications.
Customer Testimonial
"Our biggest concern was weak PD signals being buried by on-site electrical noise. The MOEORW-W5085 exceeded our expectations. The installation went smoothly, and the data is clear and stable – giving us real confidence in our condition-based maintenance decisions."
- Electrical Maintenance Supervisor, the power plant
Key Benefits Delivered
24/7 insulation health monitoring – Early detection of developing insulation defects prevents catastrophic failures.
Reduced unplanned downtime – Data-driven proactive maintenance eliminates unnecessary overhauls.
Enhanced operational safety – Better visibility into generator health supports safety compliance.
Optimized asset life management – Historical PD trends enable smarter maintenance scheduling and extended generator life.
About Wuhan Moen Intelligent Electrical Co., Ltd.
Wuhan Moen is a specialized manufacturer and service provider of high-voltage electrical testing and condition monitoring solutions for power plants, substations, and industrial customers worldwide. With a strong focus on R&D and customer-centric service, the product portfolio includes PD monitors, transformer test equipment, and high-voltage test systems.
Need a similar solution for your plant?
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E-mail:info@hvhipotsystem.com
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We look forward to helping you protect your critical assets with reliable PD monitoring.
