柔性低频输电系统两相运行特性分析

针对基于M3C(模块化多电平矩阵式变换器)的柔性低频输电系统的两相运行方式,建立了低频系统复合序网,对常规控制策略下低频输电线路和M3C的稳态运行特性进行分析.分析表明,线路中将出现与正序电流等幅反相的零序电流,同时也会出现零序电压和负序电压;采用低频侧定功率控制和负序电流抑制策略的M3C子换流器间电容电压不均衡,M3C电容电压平均值存在2倍频振荡分量.在PSCAD/EMTDC中搭建双端型柔性低频输电系统仿真模型,验证了所得结论的正确性....

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Published in浙江电力 Vol. 41; no. 12; pp. 98 - 105
Main Authors 陆翌, 华文, 金玉琪, 董玮, 倪晓军, 邹强, 吴小丹
Format Journal Article
LanguageChinese
Published 国网浙江省电力有限公司电力科学研究院,杭州 310014%国网浙江省电力有限公司,杭州 310007%南京南瑞继保电气有限公司,南京 310027 25.12.2022
Subjects
柔性低频输电
两相运行
复合序网
Online AccessGet full text
ISSN1007-1881
DOI10.19585/j.zjdl.202212012

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Abstract 针对基于M3C(模块化多电平矩阵式变换器)的柔性低频输电系统的两相运行方式,建立了低频系统复合序网,对常规控制策略下低频输电线路和M3C的稳态运行特性进行分析.分析表明,线路中将出现与正序电流等幅反相的零序电流,同时也会出现零序电压和负序电压;采用低频侧定功率控制和负序电流抑制策略的M3C子换流器间电容电压不均衡,M3C电容电压平均值存在2倍频振荡分量.在PSCAD/EMTDC中搭建双端型柔性低频输电系统仿真模型,验证了所得结论的正确性.
AbstractList 针对基于M3C(模块化多电平矩阵式变换器)的柔性低频输电系统的两相运行方式,建立了低频系统复合序网,对常规控制策略下低频输电线路和M3C的稳态运行特性进行分析.分析表明,线路中将出现与正序电流等幅反相的零序电流,同时也会出现零序电压和负序电压;采用低频侧定功率控制和负序电流抑制策略的M3C子换流器间电容电压不均衡,M3C电容电压平均值存在2倍频振荡分量.在PSCAD/EMTDC中搭建双端型柔性低频输电系统仿真模型,验证了所得结论的正确性.
Author 邹强
华文
金玉琪
陆翌
吴小丹
董玮
倪晓军
AuthorAffiliation 国网浙江省电力有限公司电力科学研究院,杭州 310014%国网浙江省电力有限公司,杭州 310007%南京南瑞继保电气有限公司,南京 310027
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WU Xiaodan
LU Yi
DONG Wei
HUA Wen
NI Xiaojun
ZOU Qiang
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两相运行
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