含大规模风电接入的电力系统动态特性模拟与分析

Simulation and Analysis of Dynamic Characteristic for Power System with Large Scale Wind Power

大规模风力发电接入对电力系统稳定运行有较大影响,研究含大规模风电接入的电力系统动态特性具有重要意义。论文分析了风力发电机组、水力发电机组和汽轮发电机组的工作原理并建立了对应的数学模型。在此基础上,构建了含风力发电机组、水力发电机组和汽轮发电机组的多源混合电力系统模型,在风速波动条件下,对该系统模型进行了仿真分析。仿真结果表明:当风电机组输出功率发生变化时,本文所提出的混合模型能够准确描述电力系统主要参数的动态特性。

It is of great importance to investigate the dynamic characteristics of power system with large scale wind power. Large scale wind power accessing to power system has significant influence on stable operation of power system. The principles of the wind turbine generation unit, hydraulic turbine generation unit and steam turbine generation unit are analyzed respectively, and the corresponding mathematical model are established. On the basis of the above, the model of multi-source hybrid electric power system including wind turbine generation unit, hydraulic turbine generation unit and steam turbine generation unit is constructed. This hybrid model is analyzed by simulation under the condition of wind speed fluctuation. The simulation results show that, the proposed hybrid model can accurately describe the dynamic characteristics of the main parameters of power system when the output power of the wind turbine changes.