考虑负荷特性的静态电压稳定性分析  

Static Voltage Stability Analysis to Consider Load Characteristics

作　　者：李林[1] 李运坤[1] 

机构地区：[1]德阳电业局变电检修中心,四川德阳618000

出　　处：《电气技术》2011年第11期33-36,共4页Electrical Engineering

摘　　要：电压稳定性在很大程度上受负荷特性的影响。本文分析了采用ZIP负荷模型改变了潮流方程,继而影响了电压的稳定性,通过IEEE30节点系统的仿真分析了ZIP负荷的不同比重对最大负荷因子、临界电压及相对应负荷功率变化情况的影响,得出临界电压值和相对应的功率不是单调的变化。说明了采用ZPI负荷模型相对于恒功率负荷而言,负荷的静态极限提高,系统电压的稳定性能提高。Voltage stability is largely affected by the load characteristics. This paper analyzes that power flow equations are changed by ZIP load model, then which affects voltage stability. The effect of maximum load factors, critical voltage and its load power are analyzed by different proportion of load in ZIP load model in the IEEE30 bus system, obtained that critical voltage and its load power do not monotonic change, and the static limit of load is increased, and voltage stability of the system is improved using ZIP load model relative to using the constant power load.

关 键 词：静态电压稳定 连续潮流 负荷特性 

分 类 号：TM712[电气工程—电力系统及自动化]