摘要
在不考虑暂态稳定情况下,为提高含大规模风电系统的运行经济性和电能质量,研究优化加装静止无功补偿器(SVC)的方法,改善含风电场电力系统的电压波动和系统降损问题。首先通过蒙特卡洛抽样得到风速和负荷状态,对每个状态进行潮流计算,获得各节点电压期望,以此确定补偿点的范围。在此基础上考虑降损效益、投资维护费用和电压偏移指标,采用场景分析法建立目标函数模型,在补偿范围内确定SVC的最佳补偿点和补偿容量,并采用改进的GA算法进行求解。以修正的IEEE30节点系统为例进行仿真计算,结果表明所提出的方法可有效抑制含风电电力系统的电压波动,提高系统运行的经济性。
In order to increase economy and voltage quality of the power system with the integration of large-scale wind farm,SVC is studied without considering the transient stability to reduce the voltage fluctuation and system loss.Through the obtaining of wind speed and load status using Monte Carlo sampling method,power flow is calculated under each operation state,and the voltage espected value on each buses are got,based on which the range of compensation location is determined.Then,the objective function model is built by considering of the loss-reduction benefit,cost of investment and maintenance,deviation of voltage,and the optimal SVC installed capacity and location are determined in the range of compensation.In addition,the optimal solutions are calculated by improved genetic algorithm.In the end,the effectiveness of the proposed method is verified with modified IEEE-30 bus system,and the results show that economy and voltage quality can be improved effectively by using of the proposed method.
出处
《现代电力》
北大核心
2012年第6期1-6,共6页
Modern Electric Power
关键词
静止无功补偿器
风电场
电压波动
场景分析
static var compensator（SVC）
wind farm
voltage fluctuations
scenario analysis
