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基于变负荷的变压器最优运行效率分析与计算

来源于: 发表时间:2016-12-02 16:12 编辑:fzy

倪素娟(国网河北省电力公司检修分公司,石家庄市 050070)

李洪涛(中核第四研究设计工程有限公司,石家庄市 050021)
Analysis and Calculation of Optimal Operation Efficiency of Transformers Based on Variable Load
NI Sujuan(Maintenance Branch of State Grid Hebei Electric Power Company,Shijiazhuang 050070,China)
LI Hongtao(The Fourth Research and Design Engineering Corporation of CNNC,Shijiazhuang 050021,China)
 
    Abstract:Transformers are widely used in transformation and distribution system and the transformer loss takes a rather large proportion in the total system loss. Therefore,on the premise of scheme reasonableness,low-loss energy-conservation transformers shall be used. Detailed analysis is carried out on the features of optimal operation efficiencies of active,reactive and comprehensive power transmission of transformers. By assuming the load to be constant,the critical criterion for economical operation of selected transformer capacity is given. As load changes constantly in actual application,another form of criterion for transformer capacity is derived according to the variation features of load and the features of transformers.
    Key words:transformer;operation efficiency;energy saving;variable load;economical operation;loss;model selection;optimal operation
 
    摘 要:变压器在变配电系统中应用量较大,变压器损耗在整个系统的损耗中占据较大部分,因此,在考虑方案合理的前提下有必要采用低损耗节能变压器。分别对变压器的有功功率传输、无功功率传输以及综合功率传输的最优运行效率特性进行详细分析。在假定负荷恒定时给出选定变压器容量的经济运行临界判据;在工程实际中负荷是不断变动的,依据负荷的变化特征及变压器本身特性,推导出变压器容量判据的另外一种形式。
    关键词:变压器;运行效率;节能;变负荷;经济运行;损耗;选型;最优运行
    中图分类号:TU852            文献标识码:A
     doi:10. 3969 / j. issn. 1003 - 8493. 2016. 11. 003

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