南方电网技术2024，Vol.18Issue(2)：12-20,9.DOI:10.13648/j.cnki.issn1674-0629.2024.02.002
基于电流注入法的模块化多电平换流器损耗建模
Modelling of Modular Multilevel Converter Loss Based on Current Injection Method
摘要
Abstract
The valve body loss of the modular multilevel converter(MMC)is relatively large,and the refined electromagnetic transient simulation of the MMC based high voltage direct current(MMC-HVDC)requires more accurate simulation of the valve body loss for system efficiency study.Aiming at the problems of virtua losses caused by the use of equivalent models in existing MMC-HVDC electromagnetic transient simulation,a MMC-HVDC electromagnetic transient modeling method with valve body loss based on current injection method is proposed,which includes accurate automatic calculation of valve body losses under different operating conditions using the finite sampling method.Referring to the calculation results,the current injection method is used to compensate for losses in the modeling and dynamic tracking and simulation of converter valve losses are realized.Finally,the ac-curacy of the proposed method is verified by constructing a MMC-HVDC electromagnetic transient simulation model in PSCAD.The research results can be used to accurately simulate MMC-HVDC electromagnetic transient modeling with valve body losses,and further research on loss reduction measures can be carried out through simulation.关键词
模块化多电平换流器/电流注入法/换流阀损耗/柔性直流输电Key words
modular multilevel converter/current injection method/converter valve loss/MMC-HVDC transmission分类
动力与电气工程引用本文复制引用
彭光强,黄之笛,苏蕊,武霁阳,何竞松,燕京,沈卓轩,邢月..基于电流注入法的模块化多电平换流器损耗建模[J].南方电网技术,2024,18(2):12-20,9.基金项目
国家重点研发计划资助项目(2021YFB2400902) （2021YFB2400902）
中国南方电网有限责任公司科技项目(012000KK52210026(CGYKJXM2021 0128)).Supported by the National Key Research and Development Program of China(2021YFB2400902) （012000KK52210026(CGYKJXM2021 0128）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(012000KK52210026(CGYKJXM20210128)). （012000KK52210026(CGYKJXM20210128）
