Automated Generator Diagnostic System

The automated generator diagnostic system analyses process data in real time and warns operators about developing deviations. The project description records its use as part of the process-control system for Unit 1 at Kyiv CHP-6, monitoring a TVV-320 generator.

Diagnostic functions

• Checks whether stator- and rotor-current loading remains within allowable limits;
• Monitors permissible load imbalance;
• Assesses the thermal condition of the stator and rotor windings;
• Checks the gas tightness of the generator casing;
• Monitors the condition of the brush-contact assembly.

Data analysis and operator information

The system combines a process-data acquisition module, a database of operating rules and a diagnostic application. It compares generator operation with nominal and permissible temperature curves, classifying conditions as normal, abnormal or hazardous. Curves for individual temperature parameters and cooling distillate are established through tests on the equipment and reference the turbine-generator’s preceding five years of operating history.

Stored data supports comparisons across different periods. The system evaluates current thermal condition, calculates the information required for each operating zone and presents it to the operator with recommendations. By following parameter trends, it can forecast operation and alert staff when a power limitation may be needed.