采用交流耗能的新能源孤岛柔直送出方案及仿真研究  

Study on the scheme of islanded renewable energy delivered by VSC-HVDC using alternating current chopper

作　　者：卢宇[1] 汪楠楠[1] 刘鹏[1] 王柯[1] LU Yu;WANG Nannan;LIU Peng;WANG Ke(NR Electric Co.,Ltd,Nanjing 211102)

机构地区：[1]南京南瑞继保电气有限公司,南京211102

出　　处：《电气技术》2022年第5期18-24,共7页Electrical Engineering

基　　金：国家电网公司总部科技项目(5100-202118029A-0-0-00)。

摘　　要：柔性直流输电(VSC-HVDC)为大规模可再生能源的开发和利用提供了一种有效的解决方案。本文介绍了新能源孤岛方式接入柔性直流电网存在故障范围扩大的问题,比较了多种功率盈余控制方案,选择采用交流耗能装置的方案实现故障穿越,通过快速投退交流耗能装置解决新能源孤岛方式下的功率盈余问题,通过仿真分析,证明了采用交流耗能装置实现新能源孤岛方式下柔直系统故障穿越的可行性。The voltage source converter based high voltage direct current(VSC-HVDC)power grid provides an effective solution for the development and utilization of large-scale renewable energy.This paper introduces the problem of renewable energy integrated into VSC-HVDC in the island mode,which causes the fault range to expand,and through the comparison of several power surplus control schemes,the scheme of AC chopper is selected to realize fault ride through.The configuration scheme solves the power surplus problem in the new energy island mode by the fast switching of AC chopper,and the feasibility of using AC chopper to realize the fault ride through under the new energy island mode is verified by simulation.

关 键 词：孤岛方式 交流耗能装置 故障穿越 

分 类 号：TM721.1[电气工程—电力系统及自动化]