摘要
风力的随机波动特性给电力系统动态运行带来了不良影响。目前,考虑风电不良影响的动态过程仿真方法和软件主要集中在电磁暂态和机电暂态过程,而对长过程问题的分析还比较缺乏。文中以异步风力发电机单机等值模型作为风电场的数学模型,以柔性自校正仿真方法为分析手段,对包含风电场的电力系统在不同风况和不同运行方式下的长过程动态行为进行了仿真分析。算例仿真结果表明,柔性自校正仿真方法能够适应含风电场的电力系统长过程动态行为仿真,风电的随机变化会给系统电压、频率、联络线功率等带来额外波动。
The random fluctuation characteristic of wind power generation brings harmful effect to dynamic operation of power grid. At present, most dynamic process simulation software and methods, which consider the harmful effect of wind power, pay attention to electromagnetic transients and electromechanical transients, and the analysis on long-term dynamic behavior of power grid containing wind farms is seldom reported. In this paper, serving the equivalent model of single asynchronous wind power generator as mathematical model of wind farm and the flexible self-correction simulation as the analysis tool, the simulative analysis on long-term dynamic behavior of power grid containing wind farms under various power gird operating modes and different wind condition is carried out. Results of calculation example show that flexible self-correction simulation method is applicable to the simulation of long-term dynamic behavior of power grid containing wind farms; the random variation of wind power brings extra fluctuation of system voltage, frequency and tie-line power.
出处
《电网技术》
EI
CSCD
北大核心
2009年第18期133-138,共6页
Power System Technology
基金
国家自然科学基金资助项目(50877014)~~
关键词
电力系统
风电场
长过程动态行为
仿真
柔性
自校正方法
power system
wind farms
long-term dynamic behavior
simulation
flexible self-correction method
