共查询到19条相似文献,搜索用时 637 毫秒
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蓄电池组被称为“发电厂、变电所的心脏”。但阀控铅酸电池 (VRLAB)进入电力系统的历史并不太长 ,主要发展已是 90年代后期的事。因而了解研究电力应用特性和需求 ,是电池设计、制造和运行维护的必要知识。本文论述了电力系统中直流等级、电池组数、个数、容量计算选择和电池充放特性曲线应用及对电池的要求 ,也介绍了有关充电装置要求 ,以利于满足电力用电池的设计、制造和应用 相似文献
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混合型燃料电池汽车电力系统的设计与仿真 总被引:1,自引:0,他引:1
介绍了一种混合型燃料电池汽车电力系统的开发与设计,分析了燃料电池的电压-电流特性,给出了燃料电池的模型参数,通过仿真计算,对燃料电池汽车电力系统的运行模式进行了分析。实验验证了所设计的电力系统能满足基本的运行要求。 相似文献
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电网负荷有高峰和低谷特性。针对电力系统的负荷峰谷特性,探讨了如何用电池贮能系统调节电力负荷,从而提高电力系统的经济效益。认为用蓄电池调节电网的峰谷负荷差在技术上是可行的;还介绍了日本在这方面的概况。 相似文献
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介绍储能技术分类及其在电力系统中的应用,对抽水蓄能、压缩空气、飞轮、超导、超级电容器、二次电池、液流电池和钠硫电池储能技术的特性进行了分析和比较,阐述了各种储能技术的适用领域。 相似文献
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世界高能电力产品、通讯市场和工程技术服务等设备用电力系统产品的供应商美国Ultralife电池公司,近日,在华盛顿举行的AUSA展览会上展示了新一代锂离子电池UBBL10,该产品专门为恶劣条件下使用的电子设备、便携电子设备和军事应用系统等产品设计. 相似文献
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Michio Okamura 《Electrical Engineering in Japan》1996,116(3):40-51
Storage batteries or pumped hydraulic power stations have been used to store electric energy. However, there are problems with storage batteries, e.g., long charging time, limited cycle life, low Coulomb efficiency, and inaccurate residual power meters. Because of these problems, practical power applications have not been achieved. To solve these problems, a complex system of capacitors and electronic circuits called the ECS (Energy Capacitor System) is proposed. The capacitor part of the ECS is a group of electric double-layer capacitors of increased energy density. The circuits part is built around switching regulators. Although the capacitors alone are not capable of delivering stable output, the accompanying circuits compensate for various characteristics throughout the charge and discharge cycle. This combination of capacitors and electronic circuits increases the energy density by about 16 times that of the conventional electric double-layer capacitors, close to the level of lead-acid batteries but with lower output resistance and better voltage stability. The ECS inherently features short charging time, very long cycle life, and good Coulomb efficiency. The cells are completely sealed and made from materials which are not harmful to the environment. 相似文献
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