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Substation Defect Diagnosis and Latent Fault Analysis System
Applications
The Substation Defect Diagnosis and Latent Fault Analysis System is applicable to intelligent and conventional substations with voltage levels of 110kV and above, achieving functions such as optical link anomaly diagnosis and latent fault identification. It is also applicable to projects in industries such as new energy power plants, petroleum and petrochemical, and rail transportation that require intelligent operation and maintenance of secondary systems.
System Composition
  • Multi-source Data Acquisition and Analysis Unit: Integrates multi-protocol communication interfaces and supports IEC61850 for multi-source data access and standardized processing.
  • Cross-vendor Alarm Information Mapping Unit: Built-in alarm semantic parsing rule library maps differentiated alarm descriptions from various vendors into unified standard terminology.
  • Optical Loop Topology Model: Dynamically constructs optical loop topology models.
  • Intelligent Diagnostic Logic Engine: Integrates expert rule libraries, real-time and historical trend data, and waveform comparison data to achieve intelligent diagnosis.



Functional Features
  • Based on SCD/SPCD files, it achieves dynamic visualization of virtual/real loops in intelligent substations, supporting port-level search and full-path tracing.
  • Establishes a cross-vendor alarm information standardization mapping system, constructs optical loop topology models, and implements logical diagnostic reasoning.
  • By integrating dual-set protection recording comparison analysis and trend evaluation of optical power/temperature/DC parameters, it accurately identifies latent equipment faults.
  • Through time-window alarm clustering and logical modeling, it achieves optical link anomaly diagnosis and root-cause fault localization.
Cases
  • Tieling 500kV fully independently controllable new-generation substation - latent fault alarm analysis system
  • Hangzhou Power Supply Company - 220kV Haichuang substation - optical circuit diagnosis and latent fault alarm analysis system
  • CEPRI - optical circuit diagnosis and latent fault identification system