EN
GDPD-GSW-OL Generator Stator Winding Partial Discharge Online Monitoring System
GDPD-GSW-OL Digital Intelligent Generator Stator Winding Partial Discharge Online Monitoring System with Stator Slot Coupler (SSC) + HFCT+UHF+AE Multi-Sensor Fusion, Edge Computing Architecture, Smart Quick Cloud Platform Integration, IP67 Protection, for 10kV~27kV Turbine/Hydro Generator Real-Time Condition Monitoring.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDPD-GSW-OL is a professional-grade, industrial-strength real-time partial discharge monitoring systemexclusively designed for 10kV~27kV large turbine generators, hydro generators and high-voltage motors. It fully complies with GB/T 20833.1-2019, IEC 60034-27-1:2017 and DL/T 2729-2024 standards, adopting an innovative multi-sensor fusion technology that integrates stator slot couplers (SSC), high-frequency current transformers (HFCT), ultra-high frequency (UHF) antennas and acoustic emission (AE) sensors to achieve comprehensive and accurate partial discharge detection of generator stator windings.
The system features a distributed edge computing architecture where each front-end acquisition unit is equipped with a high-performance FPGA/DSP processor, enabling real-time signal processing and feature extraction at the edge. With an industry-leading 200MS/s sampling rate and 14-bit resolution, it can accurately capture extremely weak partial discharge signals even in the complex electromagnetic environment of power plants. The built-in generator-specific expert diagnosis system automatically identifies common defect types such as slot discharge, end winding discharge, internal voids, water tree degradation and insulation aging, and provides four-level early warning (Normal / Attention / Warning / Critical) with maintenance recommendations.
Specifications
| Parameter | Specification |
|---|---|
| System Parameters | |
| Compliance Standard | GB/T 20833.1-2019, IEC 60034-27-1:2017, DL/T 2729-2024, IEC 60270:2015 |
| Architecture | Distributed edge computing + cloud platform |
| Monitoring Range | 10kV~27kV turbine generators, hydro generators and large motors |
| Maximum Monitoring Points | Up to 16 channels per system (supports multiple generators) |
| SSC Sensor Parameters | |
| Frequency Range | 10MHz ~ 100MHz |
| Sensitivity | 5pC (laboratory), 10pC (field) |
| Coverage | 6~8 stator slots per SSC |
| Installation | Pre-embedded under stator slot wedges or retrofitted |
| HFCT Sensor Parameters | |
| Frequency Range | 0.3MHz ~ 30MHz |
| Transfer Impedance | ≥15mV/mA @10MHz |
| Aperture | φ20mm ~ φ100mm (customizable) |
| UHF Sensor Parameters | |
| Frequency Range | 300MHz ~ 1500MHz |
| Effective Height | ≥8mm |
| Gain | ≥40dB |
| AE Sensor Parameters | |
| Frequency Range | 20kHz ~ 200kHz |
| Sensitivity | 0.1mV |
| Acquisition Unit Parameters | |
| Sampling Rate | 200MS/s per channel |
| Resolution | 14-bit |
| Synchronous Channels | Up to 16 channels per system |
| Phase Resolution | 0.18° |
| Local Storage | 16GB (up to 12 months offline storage) |
| Communication Parameters | |
| Communication Methods | Optical fiber (up to 20km), 4G, WIFI, Ethernet |
| Protocol | TCP/IP, Modbus, MQTT |
| Software Functions | |
| Map Display | PRPD, PRPS, waveform, spectrum, trend graph, 3D discharge map |
| Defect Identification | Automatic recognition of 8+ common generator defect types |
| Early Warning | Four-level (Normal / Attention / Warning / Critical) |
| Report Generation | Automatic Word/PDF report generation |
| Cloud Platform | Smart Quick cloud platform integration |
| Physical Parameters | |
| Protection Grade | IP67 (all sensors and acquisition units) |
| Operating Temperature | -40℃ ~ +85℃ |
| Storage Temperature | -55℃ ~ +90℃ |
| Vibration Resistance | 10g (10~2000Hz) |
| EMC Level | Level 4 |
| Power Supply | AC220V, DC110V/220V, UPS backup |
| Power Consumption | <10W per acquisition unit |
| Housing | Stainless steel, anti-corrosion coating |
Applications
Core Test Objects
- Turbine generators: 10kV ~ 27kV steam turbine generators in thermal power plants
- Hydro generators: 10kV ~ 27kV water turbine generators in hydroelectric power plants
- Large motors: 6kV ~ 10kV high-voltage motors in industrial plants
- Generator accessories: Generator outlet busbars, neutral grounding systems, excitation systems
Typical Usage Scenarios
- Power plants: Generator condition-based maintenance, real-time fault early warning, smart power station construction
- Power generation groups: Centralized monitoring and management of multiple power plants
- Generator manufacturers: Factory quality control, long-term performance testing
- Third-party testing institutions: Generator status assessment, technical service
- Industrial enterprises: Internal power generator monitoring, preventive maintenance
Advantages
Compliance with Latest International Power Standards
Fully meets GB/T 20833.1-2019 Chinese national standard and IEC 60034-27-1:2017 international standard → test results are recognized by power systems worldwide
Industry-Leading SSC Technology
Stator slot couplers directly installed under stator wedges provide the highest sensitivity and most accurate detection of internal slot discharges → the gold standard for generator partial discharge detection
Multi-Sensor Fusion Technology
Integrates SSC, HFCT, UHF and AE detection methods, cross-validates signals from different dimensions → reduces false alarm rate by 90% compared to single-method systems
Distributed Edge Computing Architecture
Real-time signal processing at the edge, reduces data transmission volume and improves system response speed → supports up to 10 generators per system
Generator-Specific Expert Diagnosis System
Trained on tens of thousands of generator PD patterns, automatically identifies generator-specific defect types → eliminates subjective judgment errors, provides scientific maintenance recommendations
Smart Quick Cloud Platform Integration
Remote monitoring, data analysis and full life cycle management → realizes intelligent generator management and predictive maintenance
Industrial-Grade Rugged Design
IP67 protection, -40℃~85℃ wide temperature range, anti-vibration and anti-electromagnetic interference → works reliably in the harsh environment of power plants
Flexible Installation Options
Supports both pre-embedded installation in new generators and retrofitting in in-service generators without major modifications → can be installed on operating generators with minimal downtime
FAQ
Q: Can it be installed on in-service generators?
A: Yes. The system supports both pre-embedded installation in new generators and retrofitting in in-service generators. For in-service generators, the installation can be completed during a scheduled maintenance outage without major modifications to the generator structure.
Q: How accurate is the defect identification?
A: The system has a built-in expert diagnosis system trained on tens of thousands of typical generator PD patterns collected from global power plants over 20 years. The overall defect identification accuracy is over 95% for common generator defect types such as slot discharge, end winding discharge and internal voids.
