不同负荷模型对东北电网送电能力的影响分析

以2004年东北电网冬腰方式为例，对考虑配电网络的综合负荷模型(synthetic load model considering distribution network，SLM)以及各种常用的负荷模型进行了适应性分析。吉黑断面稳定极限和辽吉断面稳定极限的计算结果表明，采用考虑配电网络的综合负荷模型与II型马达、40%恒阻抗+60%恒功率的静态负荷模型以及30%恒阻抗+30%恒电流+40%恒功率的静态负荷模型计算结果比较接近。最后对考虑配电网络的综合负荷模型进行了参数灵敏度分析。

Analysis on Effects of Different Load Models on Transmitting Capacity of Northeast China Power Grid

Taking the intermediate load operation mode in the winter of 2004 for example, the analysis on adaptability of synthetic load model considering distribution network (SLM) and other commonly used load models are conducted. The calculation results of stability limit of the tie-line connecting Jilin power grid and Liaoning power grid and that of the tie-line connecting Jilin power grid and Heilongjiang power grid show that the calculation results by SLM are comparatively close to that by following load models respectively, they are: type II motor load model, static load model consisting of 40 percent of constant impedance load and 60 percent of constant power load and static load model consisting of 30 percent of constant current load, 30 percent constant impedance load and 40 percent of constant power load. Finally, sensitivity of parameters of SLM is analyzed.