多直流馈入受端电网的最大受电能力估计方法

Estimation Method for Maximum Power Receiving Capacity of Multi-infeed Receiving-end Power Grid

为保证多直流馈入受端电网稳定运行,提出一种静态稳定约束下多直流馈入受端电网的最大受电能力估计方法。首先,基于奇异值理论推导出多直流馈入受端电网静态电压稳定约束;然后,在考虑静态电压稳定性约束的情况下,建立多直流馈入受端电网优化调度模型;接着,给出一种计及静态电压稳定约束的优化调度模型分段线性求解方法,并基于该方法给出最大受电能力估计方法;最后,通过修改的IEEE39节点系统验证本文所提方法的有效性。

To guarantee the stable operation of a multi-infeed receiving-end power grid,an estimation method for its maximum power receiving capacity under static voltage stability constraints is proposed.First,the static voltage stability constraints are derived based on the singular value theory.Second,an optimal scheduling model for the multi-infeed receiving-end power grid considering static voltage stability constraints is established.Third,a piecewise linear solution method for the optimal scheduling model considering static voltage stability constraints is given,based on which an estimation method for the maximum power receiving capacity is put forward.Finally,a modified IEEE 39-bus system is tested to verify the effectiveness of the proposed method.