基于区间潮流算法的低压配电网分散无功补偿优化方法  

Optimized method on distributed reactive power compensation in low-voltage distribution network based on interval power flow calculation

作　　者：陈宏岩 唐治国 陈琦 王永旭 吴路明 CHEN Hongyan;TANG Zhiguo;CHEN Qi;WANG Yongxu;WU Luming(Nanjing SAC Power Grid Automation Company Limited,Nanjing 211153,China)

机构地区：[1]南京国电南自电网自动化有限公司,南京211153

出　　处：《华电技术》2020年第6期1-5,共5页HUADIAN TECHNOLOGY

摘　　要：针对低压配电网线路呈辐射状分布,负荷分布不均匀,末端节点电压偏低,负荷变动不确定性较大的问题,提出了基于区间潮流算法的无功分散补偿优化方法。基于牛拉法潮流计算模型,引入区间算法并通过仿射运算进行收敛,根据区间潮流算法计算无功功率的缺额范围。通过对某个低压配电台区的计算分析,确定了分散布置的电容器组的容量及数量,验证了该优化方法可在负荷变动较大的情况下有效改善台区电压质量。The circuits are radially distributed in low-voltage distribution network.The loads are unevenly distributed and of great uncertain change,and the voltage of terminal nodes is low.Thus,an optimization method on distributed reactive power compensation in low-voltage distribution network based on interval power flow calculation is presented.The interval calculation is introduced based on Newton-Raphson power flow calculation model,and affine arithmetic is used in its convergence algorithm.The scope of reactive power shortage is calculated by interval power flow algorithm.The capacity and quantity of distributed capacitor banks of a low-voltage power distribution network was determined by calculation and analysis.It is proved that he proposed method can improve the voltage quality of distribution networks effectively with great load fluctuations.

关 键 词：低压配电网 负荷变动 无功分散补偿 潮流计算 区间算法 仿射运算 

分 类 号：TM727[电气工程—电力系统及自动化] TM744