Research Onwind Effects On Xinjiang Turpan Power Grid Voltage Stability

In recent years, wind power to get fast development, not only the bigger power plant scale, but also the capacity of the single, therefore, need to consider the effects of wind power in the grid. Due to regional differences in our country, more in the wind power grid stability is not enough, the wind itself with a reactive performance, and the grid is for work, so need to consider when connected to the electricity grid wind power impact on the stability of power grid.This paper first theoretically analysis of wind power in the grid on the impact of power grid voltage, combined with the turpan power grid, the P, V-V-Q curve is analyzed, and model respectively, the grid voltage stability are simulated and compared respectively, through the research of time domain simulation of turpan power grid reach maximum wind power fault can be located according to the experimental results of the corresponding removal time; Then the SVC and STATCOM dynamic reactive power compensation device affect how wind power transient voltage stability; Finally, this paper discusses the wind power low voltage through the performance.Contrast found that according to the experimental results in the static and transient conditions, by the variable speed constant frequency doubly-fed induction generator wind turbines of wind farm access voltage stability than asynchronous motor of constant speed constant frequency wind power generating unit is better, in addition, SVC and STATCOM dynamic reactive power compensation device can significantly improve the transient voltage stability. In accordance with the requirements of turpan power grid, this paper determines the static and transient two different cases of quantitative indicators, and provide the basis for later access large wind power devices.