配电网电压改善潜力的静态评估与应用  

Static Assessment of Voltage Improving Potential and Its Application to Distribution Systems

作　　者：白先红[1] 张勇军[2] 陈艳[2] 韦任佳 

机构地区：[1]广西电网公司计划发展部,广西南宁530023 [2]华南理工大学电力学院,广东广州510640 [3]广州市奔流电力科技有限公司,广东广州510640

出　　处：《现代电力》2014年第3期29-33,共5页Modern Electric Power

基　　金：国家自然科学基金项目(51377060);中央高校基本科研业务费专项资金(2013ZM0013)

摘　　要：为了实现对改善配电网电压的需求判断的评估,提出了配电网电压改善潜力的概念、评价指标及其定量评估体系。以配电线路主干线路末端节点作为评估点,末端电压幅值作为判据,在典型方式静态潮流下,计算通过适当的技术措施所能取得的电压改善率,视为电压改善潜力。基于微观(配电线路)-宏观(规模配电网)模式建立电压改善潜力评估体系,采用分散微观计算与集中宏观评估模式,通过对分类典型线路在不同措施下的电压改善潜力的静态分析,对规模配电网总体电压改善潜力进行定量评估,实现了配电网规划、运行与管理领域对电压优化的宏观量化评估。算例表明,多种措施综合运用才能充分挖掘线路的电压改善潜力。In order to assess demand judgment ot distribution networks voltage, the concept, evaluation criteria and quan titative evaluation system of distribution networks voltage are presented to improve voltage potential of distribution networks in the paper. The nodal at the end of the trunk feeder of distribution lines is used as assessment node, and its voltage profile is regarded as a criterion. The voltage im proving potential is calculated by suitable technique and measures under the static load flow of typical operation mode, which is defined as the voltage improving potential. The assessment system of voltage improving potential is pro posed based on micromacro （distribution lineslargescale distribution network） model. Taking the mode of distributed micro calculation and centralized macro assessment, by static analysis on voltage improving potential of classified typical lines under different measures, total voltage improving po tential of distribution networks is assessed quantitively. The proposed method can be used to realize the macro quantita tive evaluation for voltage optimization within the planning, operation and management domain of distribution systems. Example shows that the comprehensive application of a variety of measures can fully tap voltage improving potential of lines.

关 键 词：配电线路 配电网 分散微观计算 集中宏观评估 电压改善潜力 

分 类 号：TM715[电气工程—电力系统及自动化]