HPD-4200 Cable High Frequency Partial Discharge Diagnostic Instrument
1. System Introduction
HPD-4200 is a high-end expert detection system independently developed by our company for power cables, which integrates high-frequency partial discharge detection, anti-interference and diagnosis. It has high sensitivity, wide frequency domain, high accuracy and excellent anti-interference performance. The product is positioned for sparse discharge signal detection and fast fault phasing of three-phase split cables in complex interference environments on site.
Product images：
2. Anti-interference and fault phasing technology
HPD-4200 integrates our company's independent intellectual property rights of system interference suppression strategy and fault phasing technology. Embedded real-time frequency domain filtering technology is used to deal with narrowband or white noise interference; multi-source clustering separation technology is used to deal with stubborn pulse interference; multi-channel polarity analysis and amplitude distribution comparison technology is used to deal with crosstalk and fault phasing between phases.
See the original picture for anti-interference 1.vsdx
3. Accurate identification of discharge defect types
Taking into full consideration typical internal defect modes of power cables, a rich expert sample library was built by combining laboratory and field data. A variety of pattern recognition methods were used for hierarchical identification and comprehensive diagnosis to continuously optimize the recognition accuracy of discharge types.
Diagnosis type map:
4. Excellent system performance
| name |
Parameters |
| Number of channels |
4 channels |
| Detection frequency band |
100KHz-100MHz |
| Sensitivity |
≤5pC (Laboratory) |
| Sampling rate |
100MSa/s |
| Dynamic Range |
≥60dB |
| Smart Diagnosis |
Accuracy > 80% |
| Synchronous mode |
Internal synchronization: 50Hz
External synchronization: 20~300Hz |
| Spectrum |
PRPD, PRPS, time-frequency spectrum, phase-specific clustering spectrum, etc. |
| Anti-interference |
Multi-band bandpass filtering technology |
| Single channel time-frequency clustering technology |
| Three-phase polarity identification analysis technology |
| Three-phase amplitude clustering and phasing techniques |
| Communication |
Optical fiber, network cable |
| EMC level |
GB17626, Level 4 |
| Power supply mode |
Rechargeable battery, power supply time ≥ 8 hours |
| sensor |
Transmission impedance ≥15mV/mA@50Ω impedance matching |
