摘要
为更好实现新型电力系统背景下特高压大容量外部直流电力在受端电网的配置优化,减少短路电流馈入,提高网架适应性及兼容性,基于安徽第二直流工程,提出一种接入受端电网的多端混合直流模型设计方法。文章分析多端混合柔直换流站与常规直流换流站的主要结构差异,以及接入受端电网后对提升不同极之间功率支援、短路电流限制等作用。采用PSD-BPA平台搭建受端电网仿真数据,通过机电暂态仿真验证上述理论研究内容,并给出研究结论。
In order to optimize the configuration of high-capacity external HVDC with receiving grid at the context of new power systems,reduce the short-circuit current input,and improve the adaptability and compatibility of the grid.A design method of multi-terminal receiving hybrid DC model connecting to power grid was proposed based on the Anhui NO.2 HVDC project.This paper analyzes the main structural differences between the multi-terminal hybrid flexible converters and conventional DC converters.Researching the effects of connecting to the receiving power network on enhancing the power support between different poles,and short circuit current control.The simulation system was built based on PSD-BPA,and the theoretical research content was verified by electromechanical transient simulation.Lastly,the research conclusion was given.
作者
屠勇
李玉良
习秀丽
祝青
TU Yong;LI Yuliang;XI Xiuli;ZHU Qing(China Energy Engineering Group Anhui Electric Power Design Institute Co.,Ltd.,Hefei 230601,China)
出处
《电力勘测设计》
2024年第8期36-40,78,共6页
Electric Power Survey & Design
关键词
特高压直流
受端电网
多端混合
HVDC
receiving-end grid
multi-terminal hybrid
