Power grid planning and design phase load model selecting method

• Main Authors: CHU ZHENRONG, LI HU, DOU FEI, ZHANG WENJIA, XIE ZHENJIAN, WANG HAIQIAN, CAO MINMIN, SHI DAJUN, YU XUAN
• Format: Patent
• Language: Chinese; English
• Published: 19.10.2016
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a power grid planning and design phase load model selecting method; the power grid comprises an induction motor; the method comprises the following steps: 1, building an induction motor load equation; 2, determining the sensitive voltage u1 of an induction motor model; 3, calculating corrected recovery voltage u2 of an element N-1 in the model; 4, comparing the recovery voltage u2 with the sensitive voltage u1, and selecting a static state load model when u2 >= u1. The novel method can determine conditions under which the static state model can be selected in the power grid planning and design phase. 本发明公开了种在电网规划设计阶段选取负荷模型的方法，所述电网包括感应电动机，包括以下步骤：(1)建立感应电动机的负荷方程；(2)确定感应电动机模型的敏感电压u；(3)计算模型中的个元件N-1校核后的恢复电压u；(4)将所述恢复电压u与所述敏感电压u进行比较；其中当所述恢复电压u大于或等于所述敏感电压u时，选用静态负荷模型。通过本发明提供的方法，可以解决在什么情况下在电网规划设计阶段可以选用静态模型的问题。