对称双芯移相变压器阻抗计算及仿真建模研究  

Research on Impedance Calculation and Simulation Modeling of Symmetrical Two-core Phase-shifting Transformer

作　　者：郭家鹏 郝正航[1] 陈卓[1] 邓朴[2] GUO Jiapeng;HAO Zhenghang;CHEN Zhuo;DENG Pu(School of Electrical Engineering,Guizhou University,Guiyang 550025,China;Power Grid Planning and Research Center,Guizhou Power Grid Corporation,Guiyang 550025,China)

机构地区：[1]贵州大学电气工程学院,贵阳550025 [2]贵州电网公司有限责任公司电网规划研究中心,贵阳550025

出　　处：《高压电器》2022年第4期80-86,共7页High Voltage Apparatus

基　　金：国家自然科学基金资助项目(51567005);贵州省科技计划项目[2018]5615。

摘　　要：与普通电力变压器相比,移相变压器能够对电力线路上的潮流进行调节,具有独特的设计和结构,运行工况也更为复杂。研究人员对移相变压器进行建模时,铭牌信息不足以提供建模所需的相关参数。这就使得移相变压器的仿真模型无法与实际的技术参数相对应,后续进行仿真分析时,结果与实际情况相差较大。为了解决这一问题,文中在介绍对称双芯移相变压器的基本原理和拓扑结构的基础上,推导出其总阻抗与单相绕组阻抗的关系和正序、负序及零序阻抗的计算方法,并通过MATLAB/Simulink的仿真结果与实际对称双芯移相变压器技术参数的对比,验证了所提计算方法的可行性和准确性。Phase-shifting transformers,compared with general power transformers,can regulate the power flow of power lines,have unique designs and structures as well as more complicated operating conditions.In case of modeling the phase-shifting transformer by the researchers,the information on the nameplate is insufficient to provide relevant parameters required for the modeling.This makes the simulation model of the phase-shifting transformer unable to correspond to the actual technical parameters.When the subsequent simulation analysis is performed,the result is quite different from the actual situation.In order to solve this problem,based on the introduction of the basic principle and topology of the symmetrical two-core phase-shifting transformer,the relationship between its total impedance and the impedance of the single-phase winding as well as the calculation method of positive sequence,negative sequence and zero sequence impedance are derived.The feasibility and accuracy of the proposed calculation method is verified by way of comparison between the simulation results of MATLAB/Simulink and the technical parameters of the actual symmetrical two-core phase-shifting transformer.

关 键 词：移相变压器 绕组阻抗 序网络 仿真 

分 类 号：TM41[电气工程—电器]