考虑负荷静态特性中负荷间关联的灵敏度计算  

Sensitivity Calculation Considering Load Interdependence in Static Characteristics of Loads

作　　者：苗峰显[1] 蔡忠勤[1] 郭志忠[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市150001

出　　处：《电网技术》2008年第15期52-55,61,共5页Power System Technology

摘　　要：建立了输入量与输出量之间的灵敏度计算模型,并给出了各个输入量之间相互不孤立时的灵敏度计算方法。指出了在计算电力系统灵敏度时,忽略负荷间的内在联系与实际物理状况不相符。基于灵敏度计算模型,给出了考虑负荷静态特性中负荷间相互关联的灵敏度计算方法。并通过IEEE 39节点系统对比了传统功率网络灵敏度与文中所提方法灵敏度值,指出按传统方法计算时会有较大误差,文中所提方法更符合实际物理状况,同时还指出了负荷静态模型对灵敏度计算的重要性。In this paper a model to calculate the sensitivety between input values and output values is established and the sensitivity calculation method is given while each several inputs are not isolated each other. It is pointed out that the calculation results of power system sensitivtity are not coincide with actual physical conditions while the internal relations among loads one another are neglected. Based on the sensititvity calculation model, a sensitivity calculation method which takes the load interdependence in static characteristics of loads into account is proposed. Taking IEEE 39-bus test system as the case, the sensitivity values calculated by the proposed method are compared with those obtained by traditional sensitivity calculation method, and the comprison results show that tranditional sensitivity calculation method brings about evident error, thus the proposed method does confirm to actual physical conditions, besides, the significance of choosing appropriate static load model and parameters is also pointed out.

关 键 词：灵敏度 负荷静态特性 功率网络 电力系统 潮流 

分 类 号：TM726.3[电气工程—电力系统及自动化]