基于前推回代三相潮流的低压台区理论线损计算研究  

Study on the Theoretical Line Loss Calculation of Low-Voltage Transformer Areas Based on Forward-Back Sweep Three-Phase Power Flow Algorithm

作　　者：袁旭峰[1] 鹿振国 许文强[2] 陈文豪[1] 熊炜[1] 邹晓松[1] 

机构地区：[1]贵州大学电气工程学院,贵阳550025 [2]贵阳供电局,贵阳550001

出　　处：《电测与仪表》2014年第9期1-5,共5页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(510670001);贵州省科技厅基金资助项目(黔科合J字[2008]2212号);贵州大学博士基金资助项目(贵大人基合字2007-019号)

摘　　要：随着智能配电网的发展,低压配电网配置计量装置将越来越完善,为理论线损的准确计算奠定了基础,从而为制定节能降损措施提供了技术条件。首先,指出了目前常用的低压台区理论线损计算方法存在的问题;其次,在计量装置配置完善化前提下,提出了一种计及负荷波动、三相不平衡、低压无功补偿、单相/三相混合供电等情况的低压台区理论线损计算方法;最后,将所提方法应用于实际低压台区理论线损计算,能更为准确地反映三相负荷不平衡、负荷波动、低压无功补偿等因素对低压台区线损的影响,能更为有效地制定低压配电网节能降损措施。With the development of smart distribution grid,meter devices configured for low-voltage power distribution are improving over time,which lays foundation for accurate theoretical line loss calculation and provides technical conditions for energy conservation and loss reduction. First,various problems in theoretic line loss calculation methods for low-voltage distribution areas are analyzed. Second,assuming that low-voltage distribution areas are equipped with enough meter devices,the paper put forward a theoretical line loss calculation method for low-voltage transformer areas, which considers affecting factors such as load fluctuations,three-phase load unbalance,low-voltage reactive power compensation and single-phase / three-phase / three-phase four-wire hybrid power supply. Finally,the proposed method is applied to calculate theoretic line loss in real cases,and the calculation results can reflect more accurately the influence of load fluctuations,three-phase load unbalance,low-voltage reactive power compensation and other factors. Therefore,it is more effective for drawing up energy loss reduction measures for low-voltage distribution grid.

关 键 词：理论线损 低压台区 三相不平衡 前推回代 负荷波动 

分 类 号：TM744[电气工程—电力系统及自动化]