摘要
多端柔性直流输电是在两端柔性直流输电基础上发展而来,用于解决大规模风电并网难题。该文阐述了一种风电场经VSC-MTDC并网的最优潮流计算模型,利用场景分析法模拟风电场出力的波动性,以火电机组总的发电成本最小为目标,采用预测-校正内点法求解。算例结果表明,该模型具有良好的收敛性,引入场景分析法后虽然火电机组总的发电成本增加,但火电机组的快速调节能力能有效应对风电出力波动性,从而保证电网的安全运行。
Voltage source converter based multi terminal direct current system(VSC-MTDC)is developed on the basis of flexible DC transmission at both ends,which is used to solve the problem of large-scale wind power grid connection.This paper expounds an optimal power flow(OPF)model for wind farms connected to the grid via VSC-MTDC.The scenario analysis method is used to simulate the fluctuation of wind farm output,and the predictioncorrection interior point method is used to solve the problem with the goal of minimizing the total generation cost of thermal power units.The example results show that the model has good convergence,and although the total generation cost of thermal power units increases after the scenario analysis method is introduced,the fast adjustment ability of thermal power units can effectively cope with the fluctuation of wind power output,thus ensuring the safe operation of the power grid.
作者
黄荣泽
HUANG Rongze(Dispatching Control Center of Baise New Aluminum Power Co.,Ltd.,Baise 533000,China)
出处
《黑龙江电力》
CAS
2022年第4期301-306,共6页
Heilongjiang Electric Power
