多端柔性直流电网工程用直流转换开关设计  

Design of DC transfer switch in multi-terminal VSC-based HVDC grid project

作　　者：杨帆 王浩 王杰峰 任军辉 李璐 YANG Fan;WANG Hao;WANG Jiefeng;REN Junhui;LI Lu(Xi’an XD Power System Co.,Ltd.,Xi'an 710065,China)

机构地区：[1]西安西电电力系统有限公司

出　　处：《电气应用》2019年第12期95-101,共7页Electrotechnical Application

摘　　要：直流转换开关是柔性直流电网中可实现故障隔离及运行方式转换的重要设备,其运行工况与常规直流输电工程存在差别。首先对柔性直流电网与常规直流输电中的直流转换开关配置进行了介绍,对其在各自系统中的作用进行了对比分析;然后对直流转换开关转换过程进行了分析,提出了各部件的关键技术要求;最后对其关键运行工况进行了仿真分析,完成了柔性直流电网工程用直流转换开关的设计。对柔性直流系统用直流转换开关设计具有一定的借鉴作用。The DC transfer switch is an important device for fault isolation and operation mode conversion in multi-terminal VSC-based HVDC power grid,which is different from the operating conditions in classical HVDC power transmission projects.The configuration of DC transfer switch in VSC-bascd HVDC grid and classical DC power transmissions is first introduced,the functions in VSC and classical HVDC systems are compared.Then the key requirements of each component of DC transfer switch arc analyzed.Finally the key operating conditions are simulated,and the design of the DC transfer switch for four terminals VSC-based power grid is completed.It has certain reference for the design of the switch in flexible DC system.

关 键 词：柔性直流电网 直流转换开关 开断装置 振荡回路 仿真计算 

分 类 号：TM7[电气工程—电力系统及自动化]