Excitation system is a crucial key part of any power plant. The operation and output of power plant is greatly affected by Excitation system. Excitation system is lifeline equipment.
In the past, excitation systems were of analog type which had their inherent limitations, such as:
- Difficulty in spares availability.
- Problems in parallel operations and load sharing.
- Poor response during transient conditions.
- No storage or memory back up, making it difficult for fault diagnosis.
- Poor voltage regulation and accuracy.
Looking at its importance, a lot of research and development has gone into it. The latest technology offers fully digital Excitation Control system for Synchronous Generator / Motor Brushless Application.
Benefits
- Reduces setup time with state-of-the-art software that simplifies complex setup with simple drag-and-drop programmable logic, visual real-time strip chart capabilities and cutting edge auto PID selection capabilities.
- The revolutionary auto-tuning function automatically establishes optimum PID and gain settings, taking the guesswork out of the system setup, reducing commissioning time and cost while maximizing overall system performance.
- The Offline Simulator helps to identify and troubleshoot the logic without the expensive need for physical hardware.
- Flexible PWM power stage makes it easily adaptable to any system – shunt, auxiliary winding, permanent magnet or dc fed.
- The RMS sensing and rugged power stage creates an easy, worry-free solution for applications containing high waveform distortion caused by non-linear loading.
- The advanced microprocessor-based design provides visionary expand-ability, flexibility, and reliable operation for any system.
- The optional integrated power system stabilizer eases concerns about grid code compliance issues with its advanced power system performance and reliability, eliminating the need of external devices and wiring.
- Contains a full suite of generator and motor protection for accurate fault detection and clearing, eliminating damaging conditions to the generator or motor.
- Contains an extensive array of communication options which allows for easy integration into a wide variety of control systems.
- Network Load Sharing provides easy implementation in complex paralleled systems.
Features
- Outstanding voltage regulation accuracy.
- Precise excitation control for synchronous generator or synchronous motor applications.
- Full generator metering capabilities.
- Automatic Voltage Regulation or Field Current Regulation / Field Voltage Regulation, Power Factor and VAR modes of operation.
- Integrated Generator Protection with detection of – Loss of PMG, Field Short Circuit and Sync Check.
- Load sharing over Ethernet.
- Auto tuning feature with two PID stability groups.
- Optional integrated power system stabilizer (PSS).
- Configurable Protection.
- Over-excitation Limiting (with temperature compensation).
- Under-excitation Limiting.
- Stator Current Limiting (with temperature compensation).
- Var Limiting.
- Under-frequency Limiting or V/Hz Limiting.
- Exciter Diode Monitoring.
- Trending, Oscillography and Sequence of Events Recording.
Overall, it makes sense to invest in latest technology and reap its benefits for better returns on investments.
