摘要
为求出三绕组降压变压器分接头的全部解,对于有载逆调压和无载顺调压三绕组降压变压器,采用不等式组的方法确定高压侧和中压侧分接头。算例表明:对于有载逆调压三绕组降压变压器,不但可以求得已知解,还可以找到丢失的解;对于无载顺调压三绕组降压变压器,在无解时不但可以求得已知近似解,还可以找到丢失的近似解。对于三绕组降压变压器分接头的选择,采用不等式组方法优于常用的平均数法。
In order to find out the complete solution of the three-winding step-down transformer tap,the inequality method was used to determine tap-changers on the high-voltage and medium-voltage side of the OLTC and NLTC three-winding step-down transformer.The calculation shows that not only the known solution but also the lost solution can be found for the three-winding OLTC step-down transformer,and for the threewinding NLTC step-down transformer,not only the known approximate solution but also the lost approximate solution can be found when there is no solution.In a word,the inequalities method is superior to the average method for the tap changers selection of three-winding step-down transformer.
作者
吕博宇
徐志友
邱巍
徐聪
王海越
LYU Boyu;XU Zhiyou;QIU Wei;XU Cong;WANG Haiyue(School of Electric Power,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;Shenyang Borui Power Technology Co.,Ltd.,Shenyang 110000,Liaoning Province;Inner Mongolia Shangdu Power Plant,Xilinguole 027200,Inner Mongolia)
出处
《沈阳工程学院学报（自然科学版）》
2023年第4期51-55,共5页
Journal of Shenyang Institute of Engineering:Natural Science
基金
沈阳工程学院2023大创项目(X202311632139)。
关键词
三绕组降压变压器
有载调压
无载调压
不等式组
Three-winding step-down transformer
on-load tap changer(OLTC)
no-load tap changer(NLTC)
inequalities
