中国电机工程学报2025，Vol.45Issue(8)：2956-2968,中插9,14.DOI:10.13334/j.0258-8013.pcsee.232084
新能源多电压等级纯直流汇集系统母线扰动分析及母线间协调控制研究
Disturbance Analysis of Renewable Energy Multi Flexible DC Bus Converge System and Multi-bus Coordinative Control for Disturbance Rejection
摘要
Abstract
The development of flexible power electronics technology has made the new energy DC collection system an important solution choice.The pure DC collection of new energy presents the characteristics of multiple voltage levels,and the bus voltage is often controlled by a single ended converter station.When there is load disturbance in the system,the bus voltage undergoes significant fluctuations,which affects the stable operation of the system.In response to this issue,this article models and analyzes the voltage disturbance characteristics of multi voltage level DC buses,and proposes a coordinated control method between multi voltage level buses.The task of DC bus voltage control is assigned to the DC transformers at both ends of the bus through a coordinated control strategy,achieving effective suppression of DC bus voltage fluctuations.The research results indicate that the proposed bus coordinated control can effectively improve the anti-interference and stability characteristics of DC bus voltage.Finally,the correctness and effectiveness of the proposed coordinated control strategy were verified through Matlab/Simulink software simulation and the establishment of a low-voltage experimental platform.关键词
直流汇集/多电压等级/母线电压波动/母线协调控制Key words
DC collection/multiple-voltage grades/bus voltage fluctuation/bus coordination control分类
动力与电气工程引用本文复制引用
田艳军,杨迪,陆翌,陈骞,裘鹏,刘黎,王毅..新能源多电压等级纯直流汇集系统母线扰动分析及母线间协调控制研究[J].中国电机工程学报,2025,45(8):2956-2968,中插9,14.基金项目
国网浙江省电力有限公司科技项目(5211DS230005) （5211DS230005）
河北省自然科学基金项目(E2022502032).Project Supported by Science and Technology Project of State Grid Zhejiang Electric Power Co,Ltd.(5211DS230005) （E2022502032）
Natural Science Foundation of Hebei Province(E2022502032). （E2022502032）
