面向时间过程的特征最优潮流模型

A Characteristic Optimal Power Flow Model for Time Period

考虑运行约束的电网工况优化应该面向时间过程,针对单一时间断面的常规最优潮流不能满足此种需求。文中提出了面向时间过程的积分型最优潮流模型,为大幅度提高运算效率,进一步提出了面向时间过程的特征最优潮流模型。该模型用3个不同的特征断面分别表征目标函数和约束,在满足时间过程约束的条件下,确保了时间过程目标的最优化。14节点和118节点实验系统的算例验证了模型的合理性。实验结果表明特征最优潮流模型可以有效保证电力系统的安全运行和经济效益。

Power systems optimization considering operational constraints should be oriented to a time period,a demand the regular optimal power flow model focusing on single time span is unable to meet.This paper presents an integral optimal power flow model for the time period.To further increase the calculation efficiency,a characteristic optimal power flow model for time period is then proposed,which employs three different load characteristic patterns to respectively represent the objective function and operational constraints.This model is able to guarantee the systems'optimality on the premise of satisfying all operational constraints in the whole time period.Numerical tests based on 14-bus and 118-bus experimental systems have demonstrated the validity of the proposed models,and the results show that the characteristic optimal power flow model is able to effectively guarantee system security and economy.