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苏联OMB-A型半导体最小励磁限制装置及运行经验
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作者 黄顺礼 《华中电力》 1991年第2期87-90,共4页
苏联当代电力系统发展的特点是电力传输的距离越来越长,额定电压越来越高。众所周知,高压电输线路的电容性电纳很大,使得电力系统运行在某些(如晚上、节假日)工况下电压水平偏高。为了保持电压在允许的范围内,须将最小励磁限制器投入运... 苏联当代电力系统发展的特点是电力传输的距离越来越长,额定电压越来越高。众所周知,高压电输线路的电容性电纳很大,使得电力系统运行在某些(如晚上、节假日)工况下电压水平偏高。为了保持电压在允许的范围内,须将最小励磁限制器投入运行,使电厂的发电机进入消耗无功功率的工况。 展开更多
关键词 运行经验 OMB-A 励磁 投入运行 电力系统发展 限制器 电容性电纳 电力系统运行 电压水平 电力传输
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Recent advances in flexible supercapacitors based on carbon nanotubes and graphene 被引量:3
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作者 李康 张进涛 《Science China Materials》 SCIE EI CSCD 2018年第2期210-232,共23页
Owing to the rapidly growing market for flexible electronics, there is an urgent demand to develop flexible energy storage devices. Flexible supercapacitors have received much attention due to their good flexibility, ... Owing to the rapidly growing market for flexible electronics, there is an urgent demand to develop flexible energy storage devices. Flexible supercapacitors have received much attention due to their good flexibility, fast charge/discharge rate and long lifecycle times. Carbon nanotubes(CNTs) and graphene have good mechanical properties, which make them suitable for flexible supercapacitors. Based on different nanostructures of CNTs and graphene, we summarized the recent progress in CNTs-and graphene-based flexible supercapacitors with a brief description of the basic principles for evaluating their performance. Special emphasis was given to fabrication methods, capacitive performance and electrode configurations of different flexible supercapacitors.Furthermore, the remaining challenges and future research directions for CNTs-and graphene-based flexible supercapacitors have also been discussed. 展开更多
关键词 flexible supercapacitor carbon nanotubes GRAPHENE NANOSTRUCTURE
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