动静态负荷模型在电网暂态稳定计算中的应用

提出一种简单、实用的负荷动特性综合方法。结合广东电网的实测数据，建立了相应的动态负荷模型，并将这些模型和BPA静特性负荷模型分别应用于茂湛系统送出截面功率极限计算和广州水贝变电站事故仿真两个实际算例，结果表明：采用基于实测的动特性负荷模型计算所得的短路电流值比采用静态负荷模型更接近实际录波电流值；在计算截面稳定极限时，动态和静态模型得到的机电暂态结果比较吻合，且基于实测的动特性负荷模型计算出的功率极限稍大，极限切除时间略长。

Application of dynamic and static load models to transient stability calculation

A simple and practical method for synthesizing the dynamic characterization of load is proposed.Based on the data measured from Guangdong grid,the dynamic load models are established.These models and the BPA static load models are respectively used in the calculation of power limit for Mao-Zhan power system and the fault simulation for Shuibei substation.The results show that,the short-circuit currents calculated by the dynamic load models are closer to the measured values than those by the static load models.In the stability limit calculation,the transient conditions simulated by the dynamic and static load models are nearly identical,while the power limit and CCT(Critical Clean Time )calculated by the dynamic load models are slightly bigger.