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GE EX2100｜Excitation Control Systems｜
Core parameters
1. System performance
Control accuracy: Voltage regulation ± 0.25% (AVR), current regulation ± 2.0% (FCR).
Response speed: Voltage response time<10ms, meeting the PSS requirements of the power grid.
Control modes: Automatic Voltage Regulation (AVR), Reactive Power/Power Factor Control, Manual Excitation Current Control (FCR).
2. Electrical rating (typical large unit)
Excitation voltage: No load 166V, rated 563V.
Excitation current: No load 1866A, rated 5360A.
Top voltage: ≥ 2 times rated voltage, lasting for 10 seconds.
3. Environment and Physics
Temperature: -20 ℃~+60 ℃ (operation), -40 ℃~+85 ℃ (storage).
Size/Weight: The control cabinet measures approximately 600 × 800 × 2200mm and weighs around 500kg.
Function
Voltage/reactive power control: AVR maintains a constant terminal voltage; PSS (Power System Stabilizer) suppresses low-frequency oscillations and enhances grid damping.
Limitations and protections: Underexcitation limit (UEL), overexcitation protection (76), demagnetization protection (40), rotor grounding protection, PT disconnection detection (60).
Communication and diagnosis: Ethernet (Unit Data Highway) connected to Mark VIe/DCS; Support online diagnosis, fault recording, and remote parameter backup.
Application
Power generation: 9FA/HA class gas turbines, supercritical steam turbine generators, hydroelectric units
Industry: Large combined cycle power plants, self owned power plants, synchronous motor excitation.
EX2100
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