The generator Digital excitation regulator(AVR) is to use digital microprocessor and peripheral auxiliary circuit and control software to realize the function of the original analog excitation regulator to realize, and implement more complete, sophisticated control function of the device.With digital excitation regulator to replace analog excitation regulator, as shown in figure 1-1, just one Analog AVR in DER for Digital excitation controller (Digital Excited Regulator).The generator Digital AVR Compared with analog has many advantages:

FIG. 1-1 thyristor rectifier self shunt excitation system the main wiring diagram

(a), adopted computer control, making the complex control strategy can be implemented in the excitation control.Can realize linear analog controller PID adjustment, can also can realize PSS additional control and nonlinear adjustment, linear optimal control, adaptive control, etc., so as to enrich and strengthen the function of the excitation control, change

Good operation condition of the generator.

(2), accurate control, high precision, convenient online change parameters, the system can upgrade.Signal processing, adjust the software to complete the control law are mountain, simplifies the control device.Given, magnification and time constant voltage control parameters are set in the digital, than made of the simulation component link parameters accurately, to participate

High stability, strong adaptability to environment, signal processing and control precision is high.At the same time online adjustment convenient set parameters.

(3), flexible control, powerful, easy to realize remote monitoring and control.Digital excitation regulator can achieve complete in the excitation control of restriction and protection function, general and flexible system function, simple operation and fault diagnosis function.Can be easily implemented generator constant reactive power operation and constant power factor operation, choice of adjustable rate online, over excitation/low excitation limit, transient conditions, restricted stator current and strong excitation inverse time limit, voltage/frequency (V/F) and various protective functions.Through serial interface communication bus, or conventional analog way access power plant computer monitoring and control system, convenient and flexible to facilitate remote control and realize the calculation of generator set

Comprehensive coordination control.

(4), good reliability, long trouble-free working hours.Due to adjust the rule by the software implementation, reduced the hardware circuit and improve the reliability.Also can use double controller redundancy operation, automatic detection fault and automatically switch.

Excitation control system Have great influence to the stability of power system,Dongguan tuangcheng automation equipment co., LTD as a professional manufacturer of the AVR, create the most reliable, high-quality AVR products,positiveResearch and development of high-end digital AVR, the current research and development of DVR16 series and DVR336 series digital AVR progress smoothly, and can be sent to market is expected to end of April, and made its debut on the Shanghai power show in May, looking forward to everybody's attention.