考虑负荷时变性和动态补偿的电力系统负荷建模  

Load modeling of power system considering time-variant load and dynamic compensation

作　　者：杨强[1] 郝文斌 洪行旅 刘玉生[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]成都电业局,四川成都610021

出　　处：《电力系统保护与控制》2011年第17期17-21,59,共6页Power System Protection and Control

摘　　要：负荷模型的准确性对电力系统稳定性分析和控制有重要影响。由于电力系统负荷的时变性,常规的负荷模型难以准确描述真实负荷的动态特性。基于成都某变电站故障录波仪的实测数据,采用时变自适应的负荷模型(TVA负荷模型),对成都某大区负荷进行了建模。根据仿真结果,对TVA负荷模型结构做了改进,在模型结构中增加了动态补偿环节。根据实测的数据,改进的负荷模型仿真结果明显更接近于真实的负荷,验证了动态补偿环节的有效性。The accuracy of the load model is very important for power system stability analysis and control. Conventional load models can＇t accurately describe the dynamic characteristics of the real load, because power system load is time-variant. Based on measured data by a fault record instrument of a substation in Chengdu, a time-variant adaptive load model （TVA load model） is obtained. By adding a dynamic compensation in the structure of the model, an improved TVA load model is proposed in this paper. Simulation results show that the proposed load model is closer to the real power load, which illustrates the effectiveness of the dynamic compensation.

关 键 词：负荷建模 改进的TVA负荷模型 动态补偿 

分 类 号：TM743[电气工程—电力系统及自动化]