HVDC用直流滤波电容器组均压技术研究
Study on Grading Technology of DC-filter Capacitor Bank for HVDC
左强林 1赵彦军 1孙振瑜2
作者信息
- 1. 无锡赛晶电力电容器有限公司,江苏 无锡 214100
- 2. 广西大学,南宁 530000
- 折叠
摘要
本文从HVDC用直流滤波电容器的台架结构出发,研究了台架设计对直流电压分配的影响,研究了电容器外壳连接元件串联段数、泄漏比与直流电压不均匀系数的关系,得出元件串联段数越多直流电压分配越不均匀的结论;结合电容器单元的特点,得出电容器的电时间常数是一个仅与ρε相关的常数的结论,并依据上述结论分析了大容量直流电容器组运行不理想的原因,给出了直流滤波电容器组的设计建议.
Abstract
In this paper,the influence of bench design on DC voltage distribution is studied on the basis of bench structure of DC filter capacitor for HVDC,the relationship among the number of series segments,leakage ratio and DC voltage non-uniform coefficient of capacitor shell connection elements is studied,and the conclusion that the more the number of series segments of the elements,the more the non-uniform of the DC voltage distribution is concluded;In combination with the characteristics of the capacitor unit,it is concluded that the electric time constant of the capacitor is only a constant which is only related to ρε and,on the basis of above conclusion,the reasons for the unsatisfactory operation of the large-capacity DC capacitor bank are analyzed,and the design recommendations for DC filter capacitor banks are given.
关键词
HVDC/直流滤波电容器/均压措施/直流电压不均匀系数/泄漏比/电时间常数Key words
HVDC/DC-filter capacitor/grading measures/DC voltage non-uniform coefficient/leakage ratio/electric time constant引用本文复制引用
出版年
2024
NETL
NSTL
万方数据