考虑等效阻抗影响的对称双芯移相变压器仿真建模研究  

Study on Simulation Modeling of Symmetrical Dual-core Phase Shifting Transformer Considering Equivalent Impedance

作　　者：杨鹏 程慧琳 赵娴 苗泽裕 隋璐 卢志刚[3] YANG Peng;CHENG Huilin;ZHAO Xian;MIAO Zeyu;SUI Lu;LU Zhigang(Electric Power Research Institute of State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050000,China;Shijiazhuang Power Supply Company,State Grid Hebei Electric Power Co.,Ltd.,Shijiazhuang 050000,China;Key Laboratory of Power Electronics for Energy Conservation and Drive Control of Hebei Province,Yanshan University,Hebei Qinhuangdao 066004,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,石家庄050000 [2]国网河北省电力有限公司石家庄供电分公司,石家庄050000 [3]燕山大学电力电子节能与传动控制河北省重点实验室,河北秦皇岛066004

出　　处：《高压电器》2025年第2期73-82,共10页High Voltage Apparatus

基　　金：国网河北省电力有限公司科技项目(kj2022-016)。

摘　　要：随着新能源渗透率的不断提高,配电网合环不停电转供逐渐成为研究热点,移相变压器(phase shifting transformer,PST)作为重要的潮流调节手段受到广泛关注。在现有对PST的建模与计算方法中,往往忽略等效阻抗对移相效果的影响,导致在某些情况下的分析结果与实际情况存在偏差,影响系统安全稳定运行。为此,文中考虑了移相变压器功能的多样性以及结构的多变性,计及等效阻抗产生的电压降,建立了考虑等效阻抗影响的双芯对称型移相变压器模型,并且推导出相应的潮流计算模型,使得理论分析的结果更加准确。最后在PSDEdit中建立了仿真系统模型,结果表明PST的数学模型中是否考虑等效阻抗对稳态环境下线路传输有功功率以及暂态过程中系统受冲击程度的相关计算结果影响较大,考虑等效阻抗影响更有利于提高分析结果的准确性。With the continuous improvement of new energy permeability,loop switching in distribution network is becoming a hot topic of study,and phase shifting transformer(PST)is widely concerned as an important means of power flow regulation.In the existing modeling and calculation methods to PST,the effect of the equivalent impedance on the phase shift effect is often ignored,which,in some cases,leads to the deviation between the analysis results and the actual situation and affects safe and stable operation of system.On this basis,in this paper a dual-core symmetrical phase-shifting transformer model considering the influence of equivalent impedance is set up by way of considering the diversity of functions and the variability of structure of phase-shifting transformer together with the voltage drop generated by equivalent impedance.The corresponding power flow calculation model is derived,which makes the theoretical analysis results more accurate.Finally,a simulation system model is set up in PSDEdit.The results show that whether the equivalent impedance is considered in the mathematical model of PST has a great influence on the calculation results of the active power transmitted by the line in the steady-state environment and the impact degree of the system in the transient process.Consideration of the effect of the equivalent impedance is more conducive to improve the accuracy of the analysis results.

关 键 词：双芯对称型移相变压器 等效阻抗 潮流控制 合环转供 

分 类 号：TM40[电气工程—电器]