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太阳能光伏电站蓄电池技术要求探讨 总被引:2,自引:0,他引:2
1太阳能光伏发电系统用蓄电池种类太阳能光伏发电系统用蓄电池主要是用来贮能,将太阳电池提供的电能转化为化学能贮存在蓄电池中。我国西部地区的独立光伏电站,一般白天由太阳电池方阵给蓄电池充电,夜晚由蓄电池给负载供电,蓄电池处于半浮充充电状态。太阳能光伏发电系统用蓄电池主要包括镉镍蓄电池和铅酸蓄电池。镉镍蓄电池只用一种,即开口式、需补充电解液的蓄电池,单体标称电压为1.2V。铅酸蓄电池包括汽车蓄电池、摩托车蓄电池、固定型防酸式铅酸蓄电池和阀控式密封铅酸蓄电池(简称VRLA电池)。VRLA电池按电解液吸附方式… 相似文献
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光伏发电系统用蓄电池包括镉镍蓄电池和铅酸蓄电池,其中镉镍电池正逐步被淘汰。铅酸蓄电池包括富液式和贫液式两类。早期的太阳能光伏发电系统一般使用富液式铅酸蓄电池,它在使用过程中伴随有酸雾产生,污染环境。而阀控式密封铅酸(VRLA)蓄电池是最近十几年才在我国发展起来的贫液式铅酸蓄电池,由于它具有不需补加酸水、无酸雾析出、可任意放置使用、搬运方便、使用清洁等优点,近几年在光伏发电系统中得到广泛的应用。 相似文献
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1引言独立光伏发电系统中的蓄电池,是保证系统正常运行的重要储能设备。目前在独立光伏发电系统中常选用的是价格较低的铅酸蓄电池,由于铅酸蓄 相似文献
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2021年“两会”上,碳达峰、碳中和被首次写入《政府工作报告》,新能源发电备受关注。以风电、光伏发电为主要形式的非化石能源将逐渐占据电力系统的主体地位,光伏电站用储能电池的发展和应用意义重大。为了更好地调峰填谷,解决光伏发电、风电并网影响电网稳定的问题,需要对各类储能电池的发展和应用进行梳理和研究,分析了中国光伏电站用储能电池的发展现状与趋势,对铅酸蓄电池、磷酸铁锂电池、镍氢电池、全钒液流电池、钠硫电池、超级电容器等不同光伏电站用储能电池的工作原理和应用场景、典型项目、性能进行了介绍和对比,并对未来光伏电站用储能电池在中国的发展进行了展望。 相似文献
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鉴于汽车启动电源铅酸电池存在严重环境污染隐患,本文采用环保型32650圆柱磷酸铁锂电池组装成25.6 V/65 A•h电池组代替铅酸电池应用于汽车启动电源,并分别对磷酸铁锂电池组的常温和低温启动能力、倍率性能和低温放电性能等进行测试。实验结果表明,电池组0.33 C放电容量为67.028 A•h,3 C放电容量为0.33 C放电容量的98.24%,电池组具有较好的倍率性能;电池组在 −30℃放电容量为额定容量的84.7%,具有良好的低温性能;电池组在25℃和 −20℃下以600 A电流放电,单串电池电压均高于放电保护电压;电池组在25℃搁置28 d之后,容量恢复率为99.37%;磷酸铁锂电池组性能均满足汽车启动电源性能要求,可以代替铅酸电池作为汽车启动电源。 相似文献
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介绍了铅酸电池储能系统组成,包括铅酸电池组、电池管理系统(BMS)和储能变流器(PCS),对铅酸电池储能系统的并网PQ控制、离网v/F控制、并离网切换控制和恒压浮充控制等控制策略开展研究,在此基础上研制了250kW/800kW·h铅酸电池储能系统,应用于扬州经济技术开发区智能电网综合示范项目中,试验证明所采用的控制策略能够满足运行要求。 相似文献
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Policies and laws encouraging the development of renewable energy systems in China have led to rapid progress in the past 2 years, particularly in the solar cell (photovoltaic) industry. The development of the photovoltaic (PV) and wind power markets in China is outlined in this paper, with emphasis on the utilization of lead-acid batteries. The storage battery is a key component of PV/wind power systems, yet many deficiencies remain to be resolved. Some experimental results are presented, along with examples of potential applications of valve regulated lead-acid (VRLA) batteries, both the absorbed glass mat (AGM) and gelled types. 相似文献
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China and India are embarking on ambitious initiatives over the next decade to expand solar photovoltaic (PV) power in underserved regions. China proposes adding 1.6 GW of solar capacity by 2020, while India plans 12 GW in addition to 20 million solar lanterns by 2022. These technologies rely heavily on lead-acid batteries (LABs) for storage. China and India’s lead mining, battery production, and recycling industries are relatively inefficient—33% and 22% environmental loss rates, respectively. Based on the quantity of lead batteries employed in existing PV systems, we estimate environmental lead emissions in China and India for new units installed under their solar energy goals. The average loss rates are 12 kg (China) and 8.5 kg (India) of lead lost per kW-year of installed PV capacity in these countries. The planned systems added in China and India will be responsible for 386 and 2030 kt of environmental lead loss, respectively, over their lifespan—equal to 1/3 of global lead production in 2009. Investments in environmental controls in lead smelting, battery manufacturing, and recycling industries along with improvements in battery take-back policies should complement deployment of solar PV systems to mitigate negative impacts of lead pollution. 相似文献
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文章提出了一种光伏电力混合储能系统的能量管理控制策略,主要应用于含有光伏电源(Photovoltaic,PV)、电池能量存储(Battery Energy Storage, BES)和交流负载的发电网络系统中。该策略能够充分利用电力系统中组合架构之间的连接关系,有效缓解了目前电网中BES系统存在的过充电、欠充电等问题,并将充放电电流控制在一个相对稳定的范围内,延长了电池的使用寿命。分别在含有传统铅酸和锂离子电池的混合能量系统中使用6 kVA电源转换器进行实验,结果证明了所提出的能量管理策略的正确性和有效性。 相似文献
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考虑倍率特性的调频用储能电池优化配置 总被引:1,自引:0,他引:1
提出一种考虑储能电池倍率特性的容量配置方法,以各类储能电池充/放电时间与倍率的关系为约束,以储能电池容量/功率最小为目标进行优化配置。以某实际电网典型工况为算例,结合不同倍率下作用时间的等效折算方法,对考虑与不考虑倍率特性的磷酸铁锂电池进行容量配置,验证该方法的优势,并从不同电池类型角度对磷酸铁锂、钛酸锂、铅酸电池的容量配置进行对比分析,最后结合3种常用的一次调频控制策略对考虑倍率特性的钛酸锂电池进行容量配置。结果验证了该方法的可行性和有效性。 相似文献
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In this paper a new design of a container is detailed for sealed lead-acid battery operating overboard of a submersible vehicle in conditions of increased ambient pressure. Such a container is both a battery jar and a pressure compensator. It has been shown that a mandatory requirement for such container use is an application of a gelled-electrolyte. Authors have offered a two-stage technology of filling of accumulators without using vacuum pumping. 相似文献
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C. Armenta-Deu 《Renewable Energy》1998,13(2):215-225
Lead-acid batteries are, between all types of batteries, the most used today as storage systems for photovoltaic applications. The sizing of the lead-acid batteries is based on some external parameters, solar irradiation and load consumption, and some battery characteristics, charge capacity and efficiency, depth of discharge, operating voltage, and ageing effects. The improvement of any of these parameters will result in an improvement of the sizing of the lead-acid battery and, consequently, of the sizing of the photovoltaic array. We have studied in this paper the influence of the improved capacity of lead-acid batteries with electrolyte circulation onto the sizing of the lead-acid battery and the PV array. The experimental results have shown that the lead-acid battery capacity can be improved as much as 20% if electrolyte circulation is used. The improvement results in a reduction of up to 30% in the size of the battery if combined with the improvement in the reduction of the battery capacity due to annual cycling and ageing, another beneficial effect of the electrolyte circulation. The reduction of size is extended to the PV array which is affected not only by the above mentioned effects, but also by the higher charge efficiency of the electrolyte circulation battery. The reduction in sizing the PV array can be as much as 41% for the most exigent operating conditions, deep depth of discharge and high discharge rate. The use of an electrolyte circulation system is especially useful in lead-acid batteries for PV systems which must operate at very deep cycling and require a minimum size of the battery block. 相似文献
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在储能系统和光伏发电相结合的统筹规划中,电池储能投资成本、光伏装机容量、光伏并网价格以及热电联产(CHP)的采用对电池储能的容量配置和电池充放电策略具有显著影响。基于分时电价下的光伏储能系统,将电池储能的容量和功率的配置转化为根据电价时段划分的约束优化问题。以某工业园区为研究对象,建立光伏-储能系统功率流模型,优化计算得到经济效益最优化的电池容量和功率配置结果及电池充放电策略。基于内部收益率、光伏自我消纳率等指标,根据光伏上网价格和电网谷段电价的关系划分场景,通过光伏发电容量和电池价格的变化探究光伏-储能系统中电池储能的容量配置、经济效益的变化规律和热电联产对系统的影响。 相似文献