Results 21 to 30 of about 1,591 (104)
, 2023 在推动中国新能源高质量跃升式发展背景下，大规模新能源开发、汇集和远距离输送成为新能源建设的重要路径之一，特大型新能源基地成为未来的重要形态。由于缺少常规交流同步发电机组和可靠备用容量，特大型新能源基地稳定性挑战、新能源利用率与供电充裕性矛盾凸显，其形态结构及演化路径成为当前关切的热点问题。系统梳理了当前最新学术研究成果，研判特大型新能源基地未来可能的源网形态并做特征分析；进一步，面向特大型新能源基地系统强度弱、灵活性不足、源网协调运行矛盾突出等挑战，针对性提出源网协调规划 ...
张玮 +5 more
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Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
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Study on Identification of Lexical Meaning in E-C Translation of English for Electric Power [PDF]
, 2019 As one of the branch of English for Science and Technology, English for Electric Power bears the characteristic of professionalism in meaning and flexible in lexis.
Jiang, Xue
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Research on Fault Current Controller of DC Microgrid [PDF]
, 2023 [Introduction] With the rapid development of AC/DC distribution networks and distributed generation technology, the role of DC microgrids in distribution networks is becoming increasingly important and will become an important component of future ...
Cong LIN, Fang GUO, Xiangfeng LI
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Electricity Transmission Strategy Research Based on Wind-Coal-Battery-Hydrogen-CCUS Multi Energy Coupling and Bundling System [PDF]
, 2023 [Introduction] In order to guarantee urban power supply and offshore wind power utilization without building new power lines, the paper aims to establish a electricity transmission strategy based on wind-coal-battery- hydrogen -CCUS multi energy coupling
Jiamin YIN +7 more
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, 2023 大容量试验是检验电力装备性能，保障装备安全可靠运行的重要环节。现有的大容量试验回路主要依靠人工操作，存在流程复杂、效率低且易出错的问题。针对大容量试验回路智能化控制的难题，研究建立了冲击发电机单电机短路模型和双电机并联短路模型，分析了发电机短路特性，结合典型大容量试验回路设计了一键顺控方案，提出试验回路一键顺控操作流程。通过对发电机短路模型和大容量试验回路系统的仿真 ...
吴益飞 +7 more
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Summary of Desert Photovoltaic Power Transmission Technology [PDF]
To achieve carbon peaking and carbon neutrality goals and improve energy efficiency, new energy plays a major role in China strategic deployment. However, as centralized photovoltaic is located in desert areas, photovoltaic power transmission has become ...
CHU Shuai +5 more
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The Analysis of Impact on Per Capita Real GDP of Provinces in Western Region by Western Region Development Program [PDF]
, 2016 自改革开放以来，我国经济发展取得了巨大成就，但同时地区间经济发展水平的差距也越来越大，为了促进我国区域经济协调发展，缩小东西部地区发展差距，2000年国家正式实施了“西部大开发”战略。在政策实施15年积累了足够多数据的基础上，本文首先分析了“西部大开发”对西部省份人均实际GDP增长率的影响，在此基础上分析了“西部大开发”对我国经济收敛性的影响，从这相互联系的两方面对“西部大开发”的政策效果进行了评价，结论是“西部大开发”基本实现了其战略目标。 在政策绩效评价广泛应用的“反事实”方法中 ...
孙天柱
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Rare Metals, EarlyView.ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo +6 more
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Gaoya dianqi, 2020 高压直流断路器是多端直流输电及高压直流系统联网的基础和安全保障,它不仅要能够开断短路电流而且要能够开断小负载电流,实现对高压直流系统的保护及控制功能。文中在振荡回路中对机械式高压直流断路器开断大电流及小电流的性能进行了测试。分别测试机械式高压直流断路器开断17.5 kA和开断50 A电流时的恢复电压值和恢复电压变化率。在试验中发现机械式高压直流断路器开断17.5 kA电流时可以在叠加高频振荡电流后的第1次过零点处开断,但是在开断50 A电流时需要在第2次电流过零点处才能开断。开断50 ...
高俊珍 +4 more
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