ANIKRON BG-08

• Swiching to working mode with precision synchronization method; 
• Swiching to working mode with self-synchronization method (if necessary); 
• Voltage frequency adjustment and high-power circuit breaker initiation; 
• Excitation voltage boosting of given factor (at least 2) in case of the grid disturbances causing voltage reduction in a power-station bus system;
• Reactive power deloading; 
• Active power deloading;
• Precise generator voltage control not less than ±0,2 % of a given DC performance;
• Stable operation in transient and emergency modes (load surges and rejections, short circuits); 
• Bumpless switching between the main and reserve control units if the main unit fails without changing a generator mode; 
• Remote AEC setting;
• Generator voltage deviation and derivative / generator voltage frequency deviation and derivative/ generator excitation current derivative algorithms for generator excitation current regulation;
• Time-dependent excitation current overload protection;
• De-excitation in case of the grid disturbances causing voltage increase in a power-station bus system;
• Underexcitation mode;
• Limiting of consumed reactive power;
• Field suppression in emergency modes;
• Electrical braking of a hydraulic power pack (upon customer request);
• Sensor LCD to display oscillograms and service information;
• Synchronization with an external time source;
• Event log with extended recording capacity.

Protection algorithms:

1. Rotor overload protection;
2. Short-circuit protection of rectified voltage circuits; 
3. Overcurrent protection;
4. Stator voltage -rise protection in idling mode;
5. Phase asymmetry protection;
6. Protection from power-pack (thyristor bridge/PA) failures and internal faults;
7. Rotor/exciter overheat protection;
8. Protection from failed initial excitation;
9. Protection from the failure of both regulation channels;
10. Control and monitoring of main excitation system units.