1. The central control unit of EXC9100 all-digital excitation system adopts the streamlined circuit construction with mainstream ARM + new FPGA chip as its core.
2. Adopting IEEE PSS-2Aaccelerating Power System Stabilizer with standard transfer function.
3. Current equalizing technology of intelligent power converter.
4. The CAN BUS technique.
5. Configuration Programming.
6. Intelligent Control Technology.
7. All-digital system.
8. Perfect friendly HMI.
9. various outlet interface.
10. Comprehensive debugging software.
11. good electromagnetic compatibility.
12. Completely independent microcomputer/analogue three-channel and two-module with redundancy configuration.
13. Multi-CPU mode,SMT and no-fan configuration is adopted in the regulator.
14. multi-course 3-dimentioned Chinese display.
15. Advanced and reliable core control device.
16. High-speed AC sampling technique
17. Independent and intelligent detection system and perfect fault detection function.
18. the high-frequency pulse train trigger technology, low residual fast Field flashing technology.
19. Intelligent power cabinet.
20. Current equalizing technology of intelligent power converter.
21. The high-voltage pulse transformer.
22. Powerful fans stop running ability.
23. Unique SCR jumper.
24. Improve communication function.
25. Intelligent commissioning.
Performance:
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No.
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Content
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Provision
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Performance
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1
|
Regulators performance indicators
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Force-excitation ceiling voltage and time
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100MW steam turbine：1.8 times of the rated voltage.
50MW turbine : 2 times of the rated voltage.
The duration of not less than 10S.
Ceiling voltage is calculated as 80% of the terminal voltage.
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Voltage response time
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Less than 0.1S
|
|
The accuracy of the regulator
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Less than ± 0.5%
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Droop Range
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Not less than ± 15%
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Frequency and voltage droop change
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When the frequency change of 1%, the voltage variation is not greater than ± 0.25% of rated
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10% phase step in the condition of no load
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Voltage overshoot amount of not more than 50% of the step, the oscillation is not more than 3 times, settling time is not greater than 10S
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Excitation field-flashing
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Voltage overshoot is not more than 15% of rated voltage, the oscillation is not more than 3 times, the adjustment time is not greater than 10S
|
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Rated load rejection
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Voltage overshoot is not more than 15% of rated voltage, the oscillation is not more than 3 times, the adjustment time is not greater than 10S
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The adjustment range
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AVR:70% to 110% rated voltage
FCRl: 20% no-load excitation current to 110% therated excitation current
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Given speed
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0.3%~1%/S
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Nominal response
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More than 50MW turbine and steam turbine 100MW of not less than two times per second rated excitation voltage, and the rest of not less than 1 times per second rated excitation voltage
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The generator static voltage droop
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Not more than ± 1%
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2
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The rectifier bridge
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Current coefficient
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Not less than 0.85
|
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Rectifier redundancy
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N-1
|
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The maximum instantaneous value of the output voltage of the rectifier
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1.1 times the rated excitation current, shall not exceed the amplitude of the voltage-to-ground voltage of 30%.
|
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3
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Inversion and overvoltage protection
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Deexcitation overvoltage
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Shall not be less than the factory test voltage to ground voltage amplitude of 30%, shall not exceed 50%.
|
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ZNO
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Chargeability of less than 60%, 20% of the capacity margin.
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4
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Power supply
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Operating frequency range
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45~82.5Hz
|
|
AC380V/220
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+10%~-15%
|
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DC220V/110V
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-15%~+10%
|
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5
|
System
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Forced removal rate of excitation system
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Not more than 0.2%
|