摘要
电力电子变压器(power electronic transformer,PET)可以实现多电压等级和电能形态的变换,将在柔性配电网中发挥重要作用。文中对高频隔离型电力电子变压器加速仿真关键技术进行介绍和展望。首先,结合PET电磁暂态仿真的特点分析其面临的瓶颈与挑战,并与模块化多电平换流器进行直观对比。接着,提出适用于高频隔离型PET的电磁暂态等效建模框架,并以双有源桥变换器为例,对端口解耦、节点导纳矩阵预处理和多端口参数矩阵转换这3种现有的提速思路进行分析,通过仿真对比,指出各自的优缺点和适用场景。最后,对PET等效建模与实时仿真的研究方向进行展望。
Power electronic transformer(PET),which can realize transformation of multiple voltage levels and electrical energy forms,has become the core equipment of flexible distribution network.This paper introduced the key technology and prospects of the electromagnetic transient(EMT)equivalent modelling and fast simulation of various types of PET.First,the urgent challenges of the EMT simulation of PETs were summarized by comparing with the equivalent modelling algorithms of the HVDC modular multilevel converters(MMC).Then the equivalent modelling framework of the PET was given.Taking the dual active bridge(DAB)converter as an example,three equivalent models(EM)using port decoupling,preprocessing of node admittance matrix and conversion of multiple port parameter matrix were analyzed.Through simulation comparison,the advantages and disadvantages and applicable scenarios of the three models were pointed out.Finally,the research direction of PET equivalent modeling and real-time simulation was prospected.
作者
许建中
高晨祥
丁江萍
冯谟可
王晓婷
赵成勇
XU Jianzhong;GAO Chenxiang;DING Jiangping;FENG Moke;WANG Xiaoting;ZHAO Chengyong(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2021年第10期3466-3479,共14页
Proceedings of the CSEE
基金
国家重点研发计划资助项目(2018YFB0904600)。
关键词
电力电子变压器
电磁暂态
等效建模
快速仿真
power electronic transformer(PET)
electromagnetic transient
equivalent modelling
fast simulation
作者简介
许建中(1987),男,副教授,博士生导师,研究方向为高压直流输电和直流电网等,xujianzhong@ncepu.edu.cn;高晨祥(1997),男,硕士研究生,研究方向为高压直流输电MMC电磁暂态建模,chenxianggao@ncepu.edu.cn;丁江萍(1997),女,硕士研究生,研究方向为高压直流输电MMC电磁暂态建模,jiangpingding@ncepu.edu.cn;冯谟可(1996),男,硕士研究生,研究方向为高压直流输电与柔性直流输电技术,fengmoke1996@163.com;王晓婷(1998),女,硕士研究生,研究方向为高压直流输电MMC电磁暂态建模,825409549@qq.com;通信作者:赵成勇(1964),男,教授,博士生导师,研究方向为直流输电、电能质量分析与控制等,chengyongzhao@ncepu.edu.cn。
