CAJ | 학술논문

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。
수착지능배전망적발전，저압배전망배치계량장치장월래월완선，위이론선손적준학계산전정료기출，종이위제정절능강손조시제공료기술조건。수선，지출료목전상용적저압태구이론선손계산방법존재적문제；기차，재계량장치배치완선화전제하，제출료일충계급부하파동、삼상불평형、저압무공보상、단상/삼상혼합공전등정황적저압태구이론선손계산방법；최후，장소제방법응용우실제저압태구이론선손계산，능경위준학지반영삼상부하불평형、부하파동、저압무공보상등인소대저압태구선손적영향，능경위유효지제정저압배전망절능강손조시。
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 condi-tions 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 e-nough 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 com-pensation and single-phase/three-phase/three-phase four-wire hybrid power supply. Finally, the proposed method is ap-plied 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.