配电网台区低压损耗分析与计算
杨乐新，尹成，杜力，李佩，孙哲琳
（国网安徽省电力有限公司芜湖供电公司，安徽 芜湖 241000）
摘 要：配电网台区低压损耗通常只有定性分析，没有定量计算，无法准确指导配变台区改造工作。分析了配电网台区低压损耗的原因，给出了在工程实际中的低压损耗计算方法。通过实例计算可知，配变低压损耗率呈现先下降再上升的走势，说明配变台区在变压器轻载和重载的情况下总损耗均偏高。指出在对配电网台区进行改造时，配变容量、低压导线型号的选择要与负荷需求相匹配，避免配变容量过大或过小，造成配电网资源的浪费。
关键词：配电网；台区；低压损耗；计算
中图分类号：TM727 文献标识码：A 文章编号：1007-3175(2018)04-0024-04
Analysis and Calculation of Low Voltage Loss of Distribution Network Courts
YANG Le-xin, YIN Cheng, DU Li, LI Pei, SUN Zhe-lin
（Wuhu Power Supply Company, State Grid Anhui Electric Power Limited Company, Wuhu 241000, China）
Abstract: The low voltage loss of distribution network courts are usually with only qualitative analysis but quantitative calculation, which can not accurately guide the reconstruction work of distribution network courts. This paper analyzed the reason of low pressure loss distribution network courts and gave the calculation method of low pressure loss in engineering practice. The living example calculation shows that the low pressure loss rate of distribution transformer declines at first and has the rising trend later, which means that the total loss of the transformer is high when the transformer is with both light load and heavy load. It is pointed out that when the distribution network court is carried out transformation, the selection of distribution transformer capacity and low voltage conductor type should be matched with the load demand to avoid too big or too small of distribution transformer capacity, so as to lead to the waste of distribution network resources.
Key words: distribution network; courts; low voltage loss; calculation
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