Results 41 to 50 of about 9,855 (131)
Gaoya dianqi, 2022 交流滤波器回路是特高压换流变电站的重要设备回路，但其特殊的结构特征导致其在强震作用下易发生破坏。为研究交流滤波器回路的地震易损性，文中通过有限元数值仿真计算的方法，对某800 kV换流站交流滤波器回路进行了数值建模，基于数值模型进行了模态分析和地震响应时程计算，并进行了回路地震易损性分析。结果表明：交流滤波器回路中的高压电容器和电阻器支柱绝缘子根部应力水平较高，有破坏风险；软母线的轴拉力远低于其计算拉断力；考虑母线耦联作用后，高压电容器和电阻器等应力较高的设备地震响应有所降低；PGA高于0.4g时 ...
李强, 田松丰, 张世洪
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International Journal of Urban and Regional Research, Volume 50, Issue 1, Page 191-220, January 2026.Abstract Henry George advocated for capturing land value increases for public ends. The active approach of public authorities organizing and financing land development can help capture higher land value increases, as Hartman and Spit indicate. However, this approach hardly happens in developing countries, where the coalition of private developers and ...
Nannan Xu
wiley +1 more source
Gaoya dianqi, 2022 换流变压器是换流变电站中的重要设备，但在历次地震中破坏严重。因此为研究±600 kV换流变压器回路的抗震性能，找寻回路中的薄弱环节，文中根据某工程建立了换流变压器回路的精细化有限元模型，并对回路进行了动力特性和地震响应分析。发现了地震作用下该回路的薄弱位置，得到了部件的连接方式和结构形式是影响结构响应的关键因素。通过将换流变压器单体和回路进行对比分析发现耦联体系可以明显减小设备在地震作用下的结构响应，同时金具内的铝绞线可以消耗由于地震作用产生的能量，起到耗能减震的作用 ...
张秀丽, 吕艳梅
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Passing on the red genes: Communism nostalgia in online fictions and ideological governance in China
Regulation &Governance, Volume 20, Issue 1, Page 119-133, January 2026.Abstract How does communism as an ideology fare in the post‐reform digital age China? What are the implications for China's ideological governance? Through online ethnographic work and text analysis, this paper identifies and analyzes how communism as an ideation and a practice is (re)memorized, (re)presented, and (re)interpreted in popular online ...
Rongbin Han
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交流1000kV与500kV/220kV同塔四回线路的潜供电流问题研究
Gaoya dianqi, 2017 同塔四回线路回路多、间距小,线路间电磁耦合作用更强,使得潜供电流问题更加突出。针对这一问题,分析了同塔四回线路潜供电流产生机理,采用电磁暂态仿真软件ATP-EMTP建立了交流双回1 000 kV和500 kV/220 kV线路同塔四回线路的模型并计算得到多种运行方式下各电压等级线路的潜供电流与恢复电压。结果表明,500 kV/220 kV线路对1 000 kV线路潜供电流及恢复电压影响较小,但1 000 kV线路对500 kV/220 kV线路影响较大。在此基础上提出各电压等级线路的单相重合闸的推荐时间。
童涛 +4 more
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New Directions for Child and Adolescent Development, Volume 2026, Issue 1, 2026.Background Working memory updating is crucial in bilingual children′s second language (L2) reading comprehension. A robust updating ability is a cognitive key for children to successfully master L2 reading comprehension. Objective This study is aimed at investigating the effect of updating ability on the L2 Chinese reading comprehension among Uyghur ...
Guangxin Li +3 more
wiley +1 more source
Gaoya dianqi, 2020 回路电阻测试是高压断路器检修工作的重要环节,文中结合一起瓷柱式断路器回路电阻超标的实例进行分析。通过对断路器进行解体检查,发现灭弧室动、静触头接触部位正常,在接线座与法兰导电接触面存在积水与锈蚀现象。根据法兰结构建立了等效电路模型,计算分析了法兰导电接触面间积水、锈蚀等因素对断路器回路电阻的影响规律,研究发现法兰导电接触面间积水是导致回路电阻超标的一种原因,应用法兰结构的等效电路模型能够较好的解释断路器回路电阻测量结果。文中研究结果可为该类断路器回路电阻超标问题提供计算和分析支撑,具有一定的借鉴意义。
杨为 +4 more
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World Water Policy, Volume 11, Issue 4, Page 1048-1064, November 2025.ABSTRACT Groundwater governance is complex due to several externalities associated with groundwater being an invisible natural resource tied to the land with millions of extractors and limited means of exclusion. The paper traces the evolution of groundwater irrigation in India and the corresponding change in groundwater laws and policies to address ...
Anindita Sarkar, Amrita Sarkar
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Influences on cannabis policy design and adaptation in the American states
Policy Studies Journal, Volume 53, Issue 3, Page 723-746, August 2025.Abstract Despite federal prohibitions, three‐quarters of states had implemented medical marijuana laws (MML) and one‐third had implemented recreational cannabis laws (RCL) by 2020. State policy designs varied considerably, and we focus on policy development and maturation in policy implementation, examining factors influencing design features of policy
Grant W. Neeley +1 more
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Gaoya dianqi为换流站系统的核心组件，直流场通常由多个支柱类设备和导线连接组成耦联回路，其高度柔性的特点使其在地震作用下容易产生损伤。文中旨在分析换流站直流场支柱类设备耦联回路的地震易损性及地震失效风险，以500 kV直流场耦联回路为对象，建立了精细化的仿真模型并开展了抗震性能评估，采用增量动力分析法和非线性最小二乘法拟合了回路设备的易损性曲线，提出了基于蒙特卡洛抽样的地震危险性分析方法，对比分析了回路中关键设备和整体耦联回路的地震失效风险。结果表明，支柱绝缘子PI1-2、PI1 ...
姜渭鹏, 郗家峰, 龙启, 彭仕游
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