Research On Economical Excitation Equipment Of Small Hydropower

Hydropower is a renewable energy. Large-scale hydropower is traditional energy, and the small hydropower belongs to the new energy. In the support of national policy, China has small hydropower development is rapid, but there are some shortcomings. In order to improve the quality of the small hydropower generating and improve efficiency of resource utilization of hydropower station, this paper puts forward a set of specifically for small hydropower excitation device.This equipment not only pays attention to the economic cost and pays more attention to the function of intelligent. So, choose a new dsPIC30F6014 chip as economical small hydropower excitation system master core units. In this paper, we put on the excitation system of excitation controller and excitation of main loop. In hardware, this paper puts forward dsPIC30F6014 periphery connection circuit including switch quantity interface circuits, analog measurement and regulate circuit, double narrow pulse output circuit and communication interface circuit, etc. In software, gives the main excitation system program flowcharts, A/D conversion program flow chart, the current closed-loop PID adjustment procedure flow chart, pulse program flow chart and CAN communication program flowcharts, etc. In software and hardware design as far as possible on the small hydropower excitation device makes the automation level higher in some of the device, selection and circuit design as far as possible on the guarantee excitation system performance, under the precondition of considering its economy.Finally, through the laboratory test data and test waveforms and in field test data and waveform proof this topic research budget small hydropower excitation system of generator voltage of the machine has good control effect, has high excitation performance, software and hardware cooperate good time, stability, overshoot and oscillation frequency is obtained satisfactory results.