Calculation method of short-circuit current of new energy grid based on wind-solar phase characteristics
In view of the limitations of the traditional short-circuit current calculation method in the new energy grid,a short-circuit current calculation method for the new energy grid based on the wind-solar phase characteris-tics was proposed.A wind solar complementary model was constructed to determine the phase difference between wind and photovoltaic power generation.By discretizing the dynamic components in the equivalent model of the DC power grid,the trapezoidal integral method is used to perform numerical calculations.The improved node method was used to establish the network equation,and the short-circuit current values of the faulty branch at different times were solved through iterative calculation.The experimental results showed that the maximum error of the de-sign method was only 1.4%,indicating that the design method has higher accuracy and practicality in calculating short-circuit current in new energy grids.
taking into account the phase characteristics of wind and solar powernew energy gridtrapezoidal inte-gration methodshort circuit current calculation
万方数据
维普
