scilicon control rectifier excitation for generator

This silicon control rectifier excitation system is suited for medium-small type turbine-generator unit to auto regulate its voltage and reactive power, and suit for operation of power system various run conditions. the excitation device is a product base on micro computer processor technology with advantages function.

Functions of regulator

•  All data need measuring by regulator, include voltage of generator UF, active power P , reactive power Q, voltage of excitation UL, current of excitation IL, voltage of grid network UX etc.
• Setup way of regulator working, constant voltage, constant current, constant reactive power.
• Digital regulate different
• Have manifold of excitation limit, such as forcing excitation ceiling value limit, V/f limit, over-excitation limit, under excitation limit, fail limit etc.
• Parallel running automatically track power grid voltage, quickly parallel running could realize.
• Online modified parameter and real time display data.
• Auto track include: track grid network, track running and backup, track running mode.

Main Technical Data

• When excitation current and excitation voltage is 1.1times rated value, the device can long time continue operation.
• Under the voltage variation range is –15%~+10% rated value, the frequency variation range is –3Hz~+2Hz condition, the device can long time continue operation.
• Within short time, the AC operational voltage variation range is 55%~120% rated value, the frequency variation range is 45Hz~55Hz, the device can long time continue operation, and guarantee forcing excitation and forcing decrease excitation action.
• the excitation system response time:
  rise(forcing excitation)≦0.1s
  down(quick decrease excitation, from ceiling voltage decrease to zero)≦0.15s
• Automatic voltage regulating range: 75%~120%.
• Manual voltage regulating range: 30%~130%.
• Quadrature current droop compensation:≤±10%.
• Steady-state voltage regulation: ≤±2.5%.
• At no load condition, if the frequency variation ±1%, the generator outlet voltage variation≤0.5%.
• noise level≤80dbA.
• Ceiling voltage (forcing excitation)times: When the stator voltage is 80% rated voltage, the ceiling voltage times ≥1.8.