基于短路容量的电压稳定裕度指标在湖北电网中的应用分析  

Application Analysis on Voltage Stability Margin Index Based on Short-circuit Capacity in Hubei Power Grid

作　　者：覃芸[1] 王延纬[2] 徐箭[3] 

机构地区：[1]广东电网公司电网规划研究中心,广东广州510600 [2]广东电网电力调度控制中心,广东广州510600 [3]武汉大学气工程学院,湖北武汉430072

出　　处：《广东电力》2013年第2期10-15,共6页Guangdong Electric Power

基　　金：国家自然科学基金资助(51007067);教育部高等学校博士点基金资助(20100141120026);中央高校基本科研业务费专项资金资助(5082008)

摘　　要：基于短路容量的电压稳定裕度指标是利用系统运行参数在线计算负荷母线短路容量和保持电压稳定的最小短路容量来评估负荷母线电压稳定程度的一种方法,将该指标运用到湖北电网中,可有效判断系统的电压稳定性。通过比较考虑配电网和不考虑配电网两种负荷模型的电压稳定监测结果证明,在配电网阻抗较大的系统中,考虑配电网的电压稳定指标更能快速反应电压稳定问题。Voltage stability margin index based on short-circuit capacity is a method to calculate short-circuit capacity of load bus and minimum short-circuit capacity for keeping voltage stability by making use of system operational parameters to esti- mate voltage stability degree of load bus. To apply this index in Hubei power grid can effectively judge voltage stability. By comparing monitoring results of voltage stability of two kinds load models of which one is to consider distributed network while the other is irrespective of it, this paper shows that in system of bigger impedance, the voltage stability index consider- ing of distributed network may faster reflect voltage stability problems.

关 键 词：电压稳定性 电压稳定指标 短路容量 配电网阻抗 负荷聚合 

分 类 号：TM77[电气工程—电力系统及自动化]