适用于计及负荷电压静态特性的配网潮流新型前推回代算法  

A new back /forward sweep algorithm for power flow calculation in distribution network considering load static voltage characteristics

作　　者：朱星阳[1] 张建华[1] 刘念[1] 陈加盛[1] 李振动[1] 

机构地区：[1]华北电力大学电力系统保护与动态安全监控教育部重点实验室,北京102206

出　　处：《电力系统保护与控制》2011年第20期93-97,共5页Power System Protection and Control

基　　金：国家自然科学基金(51007022,50877026);国家高技术研究发展计划(863计划)(2008AA05Z216)~~

摘　　要：鉴于当前配电网潮流计算采用恒功率负荷模型不能准确反映网络潮流分布,提出在潮流计算中考虑负荷静态电压特性。针对传统前推回代法在解决该问题时,存在算法效率降低、对负荷静态电压特性呈强敏感性的缺陷,将传统前推回代法中前推功率、回代电压改为前推回代都进行电压迭代,设计了一种新的前推回代法。IEEE36节点系统测试表明,所提算法能够准确、快速地求解配电网潮流,且算法效率对负荷静态电压特性变化具有弱敏感性。同时,通过潮流结果分析负荷静态电压特性变化对系统电压的影响。This paper puts forward power flow calculation considering load static voltage characteristics in that the result of traditional power flow calculation using constant power load models doesn＇t accurately reflect the distribution characteristics of network power flow. If we solve the problem by traditional back/forward sweep directly, the algorithmic efficiency would be low and sensitive to changes of load static voltage characteristics. In view of foregoing, a new back/forward sweep power flow algorithm is proposed in which the iteration is voltage sweep instead of forward power and back voltage sweep in traditional method. IEEE36 test example shows that the method proposed in this paper can calculate the distribution networks power flow accurately and quickly, and the algorithmic efficiency has weak sensitivity to changes of load static voltage characteristics. Finally, through simulation power flow result some analysis are carried out which is about the influence on system voltage by different load static voltage characteristics.

关 键 词：配电网 潮流 前推回代 负荷静态电压特性 

分 类 号：TM744[电气工程—电力系统及自动化]