摘要
直流滤波电容器运行于直流输电系统直流侧,长期耐受系统直流电压并吸收谐波电流。对于金属化膜电容器,电容器中流过谐波电流时,会引起电容器内部温度升高使得介质加速老化,引起电容器寿命下降。针对拟设计的圆柱形干式直流滤波电容器,对其均方根电流通流能力进行理论计算分析,并通过计算分析影响电容器通流能力的因素,为干式直流滤波电容器参数设计提供参考。
The DC filter capacitor operates on the DC side of HVDC transmission system and it should withstand DC voltage in long term and absorb the harmonic current. In case of harmonic current passing through metalized film capacitor,the internal temperature in capacitor will rise resulting in speeding up dielectric aging and leading life reduction of capacitor. In this paper, the theoretical calculation and analysis of root-mean-square current carrying capability to a dry-type DC filter capacitor with cylindrical construction are made and the factors affecting current carrying capability of capacitor are also analysed, which can be as a reference to the parameter design of dry-type DC filter capacitor.
出处
《电力电容器与无功补偿》
2014年第4期36-40,61,共6页
Power Capacitor & Reactive Power Compensation
关键词
直流滤波
电容器
通流性能
DC filtering
capacitor
current carrying capability
