| Abstrakt: |
Research in the field of renewable energy continues to be a trending topic because issue of the depletion fossil energy reserves. Therefore, it is necessary to look for other alternative energies such as wind power plants, hydroelectric, photovoltaic, and biomass. In some countries, wind power plants are the most widely used to support the need for electrical energy supply. The wind speed that can be used for a wind power plant ranges from 5 m/s to 15 m/s, but in general simulations, average wind speed of 10 m/s is used. Pitch angle plays a role to control the rotational speed of wind turbine so that the power in the induction generator remains stable. However, the presence of the pitch angle can have an impact on the short-circuit fault current. The output power generated by the wind power plant consists of components of voltage, current, and power factor. In the event of a short circuit, the output current increases to 7 times the normal current. Furthermore, sorted into pitch angle affects the output power, and further affects the contribution of the output current. The purpose of this paper is to analyze the impact of the pitch angle of the wind power plant on the short-circuit fault current contribution produced by the wind power plant. The pitch angles used in this paper are 0°, 10°, 20°, 30°, and 40°. The fault current consists of several components, such as transient alternating current (AC), direct current (DC) components, and alternating current in rms. Transient AC shows a high increase in fault current in the subtranseint period of 0.5 cycles, then decreases and enters the transient period from 1.5 cycles to 4 cycles. In the end, the fault current enters steady state. The DC component affects the waveform from the subtransient period to the steady state period. The simulation results show that the higher the pitch angle, the lower the fault current contribution produced by the wind power plant and vice versa. [ABSTRACT FROM AUTHOR] |
