engleski

Hydro generating unit digital control system

Hydro generating unit control system with four digital signal processors is presented in the paper. This digital control system is primarily designed for small hydro power plants. The system includes turbine governor, generator voltage control system and algorithm for unit synchronization to an electrical network. System is made up by means of 4 digital signal processors (DSP) ADMC300 (Analog Devices). All basic algorithms are performed at 14.4 kHz. Pulse width modulation (PWM) is running at 480 Hz. A thyristor converter and 2-phase AC motor are used as a turbine governor actuator. A two-quadrant transistor’ s (IGBT) chopper is used as a power converter for a generator exciter’ s excitation. Functions of the control system are experimentally verified on a hydro generating unit with double Pelton turbine and synchronous generator with DC exciter and sliding rings.

Generator excitation system; hydro generating unit control; digital control system

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