配网侧接入电源对负荷建模的影响

Impact of Connecting Power Sources on Load Modeling in a Distribution Network

研究了配网侧接入电源对负荷建模的影响。发现当配网侧电源的发电容量逐渐增大时,原有的感应电动机并联恒阻抗、恒电流、恒功率(ZIP)模型的负荷模型将不再能很好地反映该区域的负荷特性,进而提出了一种新的负荷模型结构——异步发电机并联ZIP模型。通过仿真计算,验证了该新负荷模型的有效性,并进一步统一了上述2种负荷模型,称为异步机并联ZIP负荷模型。

This paper studies the impact of connecting power sources on the load modeling in a distribution network,finding that when the impact is not negligible,the composite induction motor load model will no longer be able to effectively describe the actual load characteristic.So a new load model is presented,which the authors choose to call the asynchronous generator plus ZIP model.The validity of this new load model is testified by simulation calculations.Furthermore,a composite load model for the induction motor and asynchronous generator plus ZIP model is presented.