基于校准导航的广域电力系统负荷模型校准

Load model calibration based on calibration navigator for wide-area power system

基于系统主导模式下功角稳定裕度关于各节点负荷参数的灵敏度分析,提出广域电力系统负荷模型的校准导航,以区分系统负荷模型的主导校准区域和主导校准参数,并分析节点的稳定群属特征。基于静态、动态负荷比例参数和负荷功率初值,讨论电力系统负荷模型主导校准区域的分布规律及其影响因素,结果表明该类参数的主导校准区域分布主要取决于扰动的位置和各节点负荷有功功率的大小,仿真和实际算例验证了其正确性。提出先选择主导校准区域,再对其中负荷节点进行分类,并对同类负荷节点采用相同的模型参数进行统一校准的方案,以提高广域电力系统负荷模型校准的效率和精度。

In order to rationally evaluate the impact of special user on the cost of distribution network,its connection fee and use fee on deep recovery mechanism are analyzed. The connection fee is the cost mainly caused by the premature network expansion due to the connection of special user and the use fee is the cost mainly caused by the network loss increase due to the connection of special user. Jacobi matrix is used to deduce the nodal marginal capacity cost matrix of distribution network with loop configuration for calculating the connection fee of special user on deep recovery mechanism. The nodal loss sensitivity of distribution network is used to research the use fee of special user on deep recovery mechanism. Case analysis verifies the effectiveness of the proposed method.