超高压移相变压器的特性分析及其拓扑参数优化设计  

Characteristics Analysis and Parameter Optimization Design of Ultra-high Voltage Phase Shifting Transformer

作　　者：金维刚 刘航亚 翟志峰 袁佳歆[2] JIN Weigang;LIU Hangya;ZHAI Zhifeng;YUAN Jiaxin(Central China Branch of State Grid Corporation of China,Wuhan,Hubei 430077,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan,Hubei 430072,China)

机构地区：[1]国家电网有限公司华中分部,湖北武汉430077 [2]武汉大学电气与自动化学院,湖北武汉430072

出　　处：《广东电力》2025年第1期91-100,共10页Guangdong Electric Power

基　　金：国家电网有限公司华中分部科技项目(52140023000N)。

摘　　要：随着电力系统互联规模不断扩大,潮流分布不合理的现象极易出现,移相变压器则在全球范围内广泛用于解决潮流分布问题,因此对移相变压器的性能或成本进行优化有着广泛的现实需求。首先,对移相变压器拓扑结构和调节特性进行分析,建立其电路模型,推导分析计算双心对称型移相变压器内阻抗对移相角的影响,提出优化绕组的配置方法,便于控制策略的制定;其次,针对移相变压器的本体模型问题,基于统一磁路法,提出双心对称型移相变压器的电磁模型,通过有限元仿真进行空载和短路测试可知,移相器模型的关键性能指标达到预期,内阻抗的计算误差降低到1.92%;最后,采用改进型差分进化算法对PST的结构参数进行多目标优化。有限元仿真结果表明:在保证输出特性不变的前提下,优化后的体积减小约12.04%;铜耗降低约10.6%,铁心损耗下降约6.9%。With the continuous expansion of power system interconnection scale,the phenomenon of unreasonable power flow distribution is prone to occur,and phase shifting transformers are widely used worldwide to solve the problem of power flow distribution.Therefore,there is a wide practical demand for optimizing the performance or cost of phase-shifting transformers.Firstly,this paper analyzes the topology and regulation characteristics of the phase-shifting transformer,and establishes its circuit model.It also derives,analyzes and calculates the influence of the internal impedance of the symmetrical phase-shifting transformer on the phase shifting angle.Then it proposes an optimized winding configuration method to facilitate the formulation of control strategies.Secondly,in response to the problem of the body model of the phase shifting transformer,based on the unified magnetic circuit method,the paper proposes an electromagnetic model of a dual center symmetrical phase shifting transformer.Through finite element simulation,no-load and short-circuit tests are carried out so as to ensure the key performance indicators of the phase shifting model meet expectations,reducing the calculation error of internal impedance to 1.92%.Finally,the paper uses an improved differential evolution algorithm for multi-objective optimization of the structural parameters of PST.The finite element simulation results show that while ensuring the output characteristics remain unchanged,the optimized volume reduces by about 12.04%.Copper loss decreased by about 10.6%,and iron core loss decreased by about 6.9%.

关 键 词：移相变压器 电磁模型 内阻抗 参数优化设计 潮流调控 

分 类 号：TM41[电气工程—电器]