新能源风力发电系统中储能技术的实践应用

由于风力发电系统具有不稳定性、不可控性等特点,在系统发电过程中,输出功率的波动及负载突变,会直接引起直流母线电压的不稳定,从而影响供电的电能质量及电网的安全性。文章从储能技术应用角度进行分析,介绍风力发电系统中常见的储能技术类型,分别概括蓄电池储能、电解氢储能、压缩空气储能等技术手段的生效机制和优势局限,通过引入风力发电系统建设实例,分析储能系统设计、风速及功率预测、风电机储能容积设计、空压机参数设计要点,以此来确保输出电压较为平稳,保障电能质量。     

新形势下电力人才培养探索与实践

我国进入了新发展阶段,新形势下为贯彻落实党中央能源发展战略及“双碳”目标要求,电力行业提出建设“新型电力系统”。电力企业为了能够应对市场竞争和市场需求对人才培养提出了更高的要求,促进人才培养供给侧和产业需求侧结构要素全方位融合,是人才培养的必然趋势。然而当前电力人才培养仍存在诸多问题,为此深入探究了当前人才发展形势,并结合人才培养现状,提出了相应的对策建议,有助于推动人才培养供给侧和产业需求侧无缝衔接。     

电化学与蓄热储能技术在可再生能源领域的应用

分析了电化学与蓄热储能的发展情况,从安全性、使用寿命、应用领域、环境友好性、回收再利用等5个维度对比了锂离子电池和熔融盐储能两种储能形式的优劣势,同时重点分析了两者在可再生能源领域应用的投入产出比,为其应用提供参考.     

电网大规模电池储能技术的发展机遇与挑战

随着新能源、智能电网和电动汽车的迅速发展,大规模储能技术在电力系统发电侧、电网侧、用户侧都有较强的应用需求,各种特点的电池储能技术相互竞争,大规模储能技术面临着巨大的发展机遇,受到了广泛关注。在电池储能技术的相关技术背景、应用需求及应用现状、产业政策及行业发展动向方面进行介绍,指出储能技术及行业发展上的着重点。     

高端人才资源对储能技术创新的推动力北大核心CSCD

随着科学技术的持续发展,储能技术为顺应时代发展,对相关技术进行了高效调整,在很大程度上保障了储能技术的稳定性和安全性,同时也大幅度提高了储能行业的生产效率。在目前资源紧缺的制约背景下,为充分改变当今资源匮乏的局势与现状,储能行业开展了相应的新型技术研发工作。近年来,新能源储能电站的试验成功,在很大程度上标志着我国储能技术有了重要突破,但目前来说,我国储能技术仍存在着一些不足,并且局限性很大。在可持续发展的背景下,未来要创新出性能高、成本低的储能技术,全面推动与促进储能行业更快更好地发展。     

我国储能技术与国际水平的差距

目前的储能技术在世界范围内还没有胜出者。在储能领域,各国都处于产业应用的初级阶段,我国与国际先进水平差别不大,加大储能技术的研发力度有助于我国在未来的国际竞争中占据有利地位。目前储能技术的开发远远落后于风能和太阳能的发展,各国都急于发展储能技术。国内储能技术存在的问题是技术成熟度低、示范应用经验少。     

我国可再生能源与盐穴氢储能技术耦合发电的分析与展望北大核心CSCD

本文结合我国目前可再生能源与氢能的发展趋势,对国内外当前地下盐穴储氢技术的发展现状进行了综述,指出江苏省拥有丰富的可再生能源与地下盐穴资源,其可再生资源与储能地址的重合性较好可作为发展该技术路线的理想选址。并对可再生能源与盐穴氢储能耦合发电技术的可行性与该技术路线全周期的发电成本进行了系统分析。这一技术路线通过可再生能源电解水制氢以化学能形式回收可再生能源,然后通过地下盐穴大规模储能,并在需要时利用燃料电池再发电将可再生能源重新利用。本文综合考虑和分析了制氢成本、储氢成本以及再发电成本,对该技术路线再发电的度电成本进行了初步分析。结果表明:当前该方式再发电的度电成本较高,为1.88元/kWh左右,其中电费成本和设备成本分别占总成本的61.1%和25.6%。若利用可再生能源发电的过盈电能进行电解水制氢且技术路线中的相关设备成本降低至当前的50%,则该技术路线的度电成本可降低至0.49元/kWh。想要进一步降低该技术路线的发电成本则还需要依赖于技术和制造水平的进步将燃料电池的发电效率进一步提高,若燃料电池效率提升至60%,则该技术路线的度电成本能够进一步降低至0.43元/kWh,基本与当前电价持平,具有实际应用价值。同时该技术路线的发展能够促进相关制造业的发展与技术进步,提高我国能源安全与在国际能源领域的竞争力,并助力我国尽快实现能源结构优化转型和“双碳”目标。随着未来电解槽和燃料电池等设备的技术水平与效率的提升,该技术路线将具有极高的应用前景。     

信息类人才“3.5+0.5”的人才培养模式探索与实践

信息时代的飞速发展,给信息人才培养带来了很大的挑战,高校是人才培养的重要基地,但高校相对封闭的办学模式、传统课程体系下培养的学生已不能适应社会需求。信息人才培养和企业间要求的供需矛盾,促使我们反思人才培养目标和做法。信息类人才培养的"3.5+0.5"培养模式,在大学本科教育中,利用了半年时间让学生在相关企业中去参加实践,通过实践成为企业发展相适应的人才,这种人才培养模式与经济建设相适应。     

打造新余光伏人才培养创新实验区

<正>当前,全球性的能源危机日益加剧,化石能源的储量日益减少,太阳能等可再生能源的应用越来越受到世界各国的重视。为解决世界性的能源危机和全球气候变化问题,光伏产业得到了迅猛的发展。近几年,光伏产业在我国同样也得到了快速发展,中国已成为世界第一大太阳电池生产国。我国光伏产业尽管起步晚,但发展快,人才需求量大、质量     

Saft lithium-ion energy and power storage technology

Since they were first introduced in the early 1990s, lithium-ion batteries have enjoyed unprecedented growth and success in the consumer marketplace. Combining excellent performance with affordability, they have become the product of choice for portable computers and cellular phones. Building on the same energy and life cycle attributes which marked their consumer market success, but adding new high power storage capability, lithium-ion technology is now poised to play a similar role in the transportation sector. With major programmes in both high capacity and high power lithium-ion technology, Saft has developed a family of products which can address the power and energy storage needs for vehicles, utilities, aviation, satellites, and other applications where light weight, long life, and excellent energy or power storage capabilities are needed. Although further development and refinements are underway, Saft has made a major commitment to bring this technology to the market with the establishment of a major pilot and research facility in Bordeaux France. This paper discusses the performance of this family of products and their potential applications.     

MSWI bottom ash for thermal energy storage: An innovative and sustainable approach for its reutilization

The management of Municipal Solid Waste (MSW) is a very important issue that must be dealt by the perspective of the 3 Rs (Reuse, reduce, recycle. MSW incineration bottom ash (BA) accounts for 85–95% of the total solids that remained after incineration. Finding suitable alternatives for its revalorization is very attractive, especially in terms of environmental sustainability. Thermal energy storage (TES) is a complementary technology of renewable energy. The aim of this study is to evaluate the thermophysical properties of weathered BA (WBA) in order to find suitable alternatives for its valorisation. Several samples of WBA were collected from a waste-to-energy facility located in Tarragona (Spain). This facility sieved to different size fractions. Each size fraction was characterized with respect its physicochemical properties and the energy density (ρ_en) was calculated. The results obtained showed that this residue is a suitable alternative candidate material for TES as it presents an energy density of 1461.2 kJ m⁻³ K⁻¹ for the 1–2 mm fraction. In addition, the low cost of this type of residue (0.6€ per t) and its high production rate per year makes it an attractive and sustainable alternative for TES.     

蓄冷节能技术在冷库中的应用研究

对蓄冷节能技术在冷库中的应用进行了方案的可行性探讨,并通过实例进行了经济性分析。结果表明：蓄冷节能技术在冷库中的应用是可行的,但必然增加初投资,蓄冷系统投资额的增加能在3年左右通过运行电费的节省加以回收。     

New technology and possible advances in energy storage

Energy storage technologies may be electrical or thermal. Electrical energy stores have an electrical input and output to connect them to the system of which they form part, while thermal stores have a thermal input and output. The principal electrical energy storage technologies described are electrochemical systems (batteries and flow cells), kinetic energy storage (flywheels) and potential energy storage, in the form of pumped hydro and compressed air. Complementary thermal storage technologies include those based on the sensible and latent heat capacity of materials, which include bulk and smaller-capacity hot and cold water storage systems, ice storage, phase change materials and specific bespoke thermal storage media.     

飞轮储能技术及关键问题解决措施

飞轮储能具有大储能、高效率、无污染、长寿命及可实现连续工作等一系列优点,是一种具有极高研究价值和广阔的未来应用前景的新型储能技术,已受到社会的普遍关注(包括科技界、企业界),成为国际上在能源方面的热点。对飞轮储能的原理、工作模式和五个关键技术进行了较全面的阐述,指出了飞轮储能存在的关键问题(解决安全性、提高储能效率、降低成本及研究过程中制定模型的仿真方案问题)及解决对策,为进一步研究提供参考。     

A review of collector and energy storage technology for intermediate temperature applications

The technology and thermal performance of intermediate temperature solar collectors is summarized and the status of thermal and thermo-chemical storage methods is reviewed. It is concluded that collector technology is commercially available to achieve delivery temperatures up to 350°F at averaged yearly efficiencies better than 30 per cent in good solar climates and that linear parabolic, single-axis tracking troughs are the best types of collectors currently available for intermediate temperature applications. On the other hand, energy storage options commercially available today are generally limited to sensible heat systems, which are bulky and expensive for long-term storage. More research is necessary to develop new storage concepts, such as intermediate temperature chemical heat pumps based on reversible reactions, suitable for intermediate temperature solar systems with significant storage capability.     

潮流能开发技术研究进展

储量丰富、清洁无污染的潮流能近年成为人类研究开发的热点。西方发达国家在潮流能利用技术方面处于领先地位,已经进入商业化运行前期阶段。文章综述了国内外潮流能技术开发的进展和发电装置的研究现状、潮流能开发的相关技术难题,比较分析了不同潮流能水轮机的技术特点;通过对国内外潮流能利用技术的综合分析,对我国潮流能开发利用现状提出了建议。     

调峰电站及其蓄能技术

介绍了调峰电站在电力供应、电网调峰方面的作用和意义 ,概述了调峰电站的主要类型以及国内外的应用现状 ,指出寻找新的蓄能方法的重要性 ,并列举了目前几种主要的蓄能方法     

热能存储及转化技术进展与展望

能量的消耗、转换与利用伴随着人类社会的各种生产及生活活动.随着社会的持续发展,世界范围内的能源危机与环境污染问题对能源的高效合理利用及存储技术提出了更高要求.热能是最常见及最重要的能量形式,深入分析目前热能的主要来源、利用、存储方式及特点,促进热能的合理高效利用对当代社会的可持续发展至关重要.本文主要从热能来源形式及利...