配电网变电所提高变压器负荷率的探讨  

The Discuss on Enhancing the Transformer Load Rate for the Substation of Power Distribution Network

作　　者：白亚非 沈中奇 BAI Ya-fei;SHEN Zhong-qi(Tianjin Electric Power Design Institute, Tianjin 300400, China;Tianjin Shengyou Science and Technology Ltd., Tianjin 300384, China)

机构地区：[1]天津电力设计院,天津300400 [2]天津盛友科技有限公司,天津300384

出　　处：《电力勘测设计》2017年第4期47-51,共5页Electric Power Survey & Design

摘　　要：探讨在配电网变电所中采用3个单相组成一台三相变压器+备用单相变压器自动组合的方法,当三相主变任何一相故障自动切除备用单相变压器投入恢复主变三相继续供电;用备单相替代站内以往主变间的备用容量配置准则(即变压器间N-1准则)、提出三相变压器接近满负荷运行,降低了变电所主变压器总体安装容量、降低了电源线路的备用运行容量,提高了电源线路输送容量。This paper discusses in an automatic combined method on using three groups of Single-phase Transformerto be composed into a main set of Three-phase transformer on the power distribution network,In case of any failure atany Single-phase transformers in the main set,an auto switch by means of another additional Single-phase transformerto be supplementary equipped.the supplementary could be able to instead of the fault automatically to restore Threephasepower supply.Meanwhile,if there is any close to approaching full load operation on Three-phase supplies,thesupplementary can be applied ability to reserve capacity resolved from the main set as configuration(N-1criterionbetween transformers),in order to reduce the total operating capacities for the power substation,the above simulatedresults show the validity of this kind of method.

关 键 词：变电所 负荷率 变压器 

分 类 号：TM63[电气工程—电力系统及自动化]