山东电力技术2026，Vol.53Issue(1)：109-120,12.DOI:10.20097/j.cnki.issn1007-9904.250003
基于梯形积分的储能型模块化多电平变流器等值建模
Equivalence for Modular Multilevel Converter With Energy Storage System Submodules Based on Trapezoidal Integrals
摘要
Abstract
Energy storage systems have a huge market prospect in the new power system,which can greatly improve the power quality and stability of the grid,and the reliability of the power supply.In recent years,energy storage converters,integral to energy storage systems,have undergone rapid development.Among these,the modular multilevel converter with energy storage systems(MMC-ESS)has emerged as a prominent choice for energy storage power stations.MMC-ESS contain a large number of switching elements,which puts a great burden on electromagnetic simulation,and the utilization of MMC-ESS increases the number of electrical nodes,so how to equate MMC-ESS to improve the system computation speed is an urgent problem that needs to be solved nowadays.Addressing this pressing issue,this study proposes an innovative MMC-ESS submodule equivalence scheme based on trapezoidal integration and Thevenin equivalence methods.This article proceeds by initially outlining the topology of MMC-ESS.Secondly,considering that the energy storage system is connected to the sub-module through the DC/DC converter,MMC-ESS equivalent method is given in detail.Finally,the MMC-ESS equivalent model is built on the PSCAD/EMTDC platform to verify its feasibility and accuracy.Compared with the existing methods,the proposed scheme retains the simulation speed and accuracy while considering the practical application of MMC-ESS.关键词
储能/模块化多电平变流器/梯形积分法/等值模型/PSCAD/EMTDC仿真Key words
energy storage system/modular multilevel converter(MMC)/trapezoidal integration/equivalence model/PSCAD/EMTDC simulation分类
信息技术与安全科学引用本文复制引用
汪志强,刘邦金,吴斌,张敏,张乃文..基于梯形积分的储能型模块化多电平变流器等值建模[J].山东电力技术,2026,53(1):109-120,12.基金项目
国家自然科学基金(U23B20126) （U23B20126）
南瑞集团计划外项目"储能变流器多机并联谐振分析及抑制研究"(4500627224).National Natural Science Foundation of China(U23B20126) （4500627224）
The unplanned technology project of NARI Group"Analysis and Research on Multi-machine Parallel Resonance of Energy Storage Converter and Its Suppression"(4500627224). （4500627224）
