三相不平衡条件下有载调容变压器经济调容方法  

Economic capacity regulation method of on-load capacity regulating transformer under three-phase imbalance conditions

作　　者：陶顺[1] 孙志鹏 Tao Shun;Sun Zhipeng(School of Electrical and Electronic Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《电测与仪表》2023年第9期151-156,共6页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金面上项目(51777066)。

摘　　要：文中针对低压配电网中有载调容变压器三相不平衡运行时原门限值调容法经济性较差的问题,提出了一种基于负荷序电流的新型调容方法。该调容方法根据三相不平衡下变压器损耗计算模型建立了有载调容变压器不同容量的损耗临界函数,通过三相不平衡负荷的序电流与临界函数的关系得出调容变的经济运行容量。通过实际算例将文中方法与门限值调容法进行了调容状态和损耗电量的对比,验证了文中方法的准确性和经济性。In this paper,a novel capacity regulation method based on load sequence current is proposed to solve the problem of the poor economy of the original threshold value capacity regulation method when the on-load capacity regulating transformer is in three-phase imbalanced operation in low-voltage distribution network.According to the loss calculation model of the transformer under three-phase imbalance,the loss critical functions of different capacities of the on-load capacity regulating transformer are firstly established,and then,the economic operation capacity of the capacity regulating transformer is obtained through the relationship between the sequence current of the three-phase imbalance load and the critical function.Finally,through practical examples,the proposed method is compared with the threshold value capacity regulation method in terms of capacity adjustment results and power consumption,which verifies the accuracy and economy of the capacity regulation method proposed in this paper.

关 键 词：三相不平衡 有载调容变压器 调容方法 经济性分析 

分 类 号：TM421[电气工程—电器]