基于潮流灵敏度的分布式电源优化配置方法  

POWER FLOW SENSITIVITY BASED OPTIMAL CONFIGURATION METHOD OF DISTRIBUTED GENERATION

作　　者：刘昇[1] 徐政[1] 华文[2] 黄弘扬[2] 

机构地区：[1]浙江大学电气工程学院,杭州310027 [2]国网浙江省电力公司电力科学研究院,杭州310014

出　　处：《太阳能学报》2015年第11期2802-2809,共8页Acta Energiae Solaris Sinica

基　　金：国家高技术研究发展(863)计划(2011AA05A119)

摘　　要：建立分布式电源优化配置的线性规划模型,该模型以改进的综合负荷指标和全网有功网损增量作为目标函数,采用节点有功功率和无功功率的增量为待优化变量,约束条件均为增量表达形式。结合系统潮流方程线性化后的灵敏度矩阵,目标函数和约束条件均可写为带优化变量的线性表达式,从而使得分布式电源优化配置问题转化为线性规划问题,该问题可采用内点法进行求解。通过典型33节点系统的不同场景对该方法进行测试,结果表明该方法可通过优化配置分布式电源提高系统电压水平并减少系统有功网损。A linear programming model for optimal placement and sizing of distributed generations was established, which adopts a modified qualified load index and network loss increment as the objective function, and optimization variables are active power increments and reactive power increments of each node. Besides, all the constraints of the model are in incremental forms. Combined with the sensitivity matrix of the linear power flow equations, the objective function and constraints can be transformed to linear equations, which makes the problem of optimal placement and sizing of distributed generations become a linear programming problem. This problem can be solved by the interior point method. The proposed method was tested on a typical 33 bus system under different conditions. The results showed that the system voltage profile can be improved and the network loss can be reduced by the proposed method.

关 键 词：分布式发电 优化 灵敏度 线性规划 电压分布 

分 类 号：TM74[电气工程—电力系统及自动化]