Results 81 to 90 of about 1,562 (168)
Gaoya dianqi, 2003 限流开断装置（CLID）是断路器本质功能向高层次发展的产物,将有触头开关（或触发间隙）与无触头器件（GTO,超导材料、热敏材料等）、储能元件（L,C）及吸能元件（如ZnO,R）等恰当配置而构成的混合式阻抗转换与调节装置是开关设备发展的必然结果。笔者从剖析几种典型的CLID构成原理入手,对这种趋势作了分析,呼吁开关制造业应加大该类设备研制和开发的力度。
王章启 +5 more
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Constraint adjustment and computational resource allocation strategies for decomposition-based large-scale optimization of ship cabin structures [PDF]
ObjectiveTo enhance the application effectiveness of the decomposition-based optimization method in the large-scale optimization design of ship cabin structures, a constraint progressive relaxation adjustment strategy and a computational resource ...
Jun LIU +3 more
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Shiyou jixie, 2014 为满足中东地区温度0～55 ℃、湿度100%的沙漠环境钻井作业要求，研制了在使用油基钻井液条件下能够正常工作的沙漠快速移运钻机固控系统。系统采用独特的罐底设计和清砂结构，满足零排放的要求，储备罐、混合橇采用自背橇式结构，吸入罐和振动筛罐能实现整体快速移运，同时该固控系统还配套了消防系统，满足HSE的要求。试验和现场应用结果表明，该固控系统整体性能良好、搬家快捷、符合HSE规范，完全满足沙漠地区钻井作业需求。
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Site Selection of Slope-Based Gravity Energy Storage Systems Using Fuzzy Analytic Hierarchy Process [PDF]
[Objective] Slope-based gravity energy storage (SGES), an emerging mechanical energy storage technology, can effectively enhance the local consumption of renewable energy, mitigate the intermittency and volatility of wind and solar power.
Fan ZHANG +3 more
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Multi-Area Interconnected Integrated Energy System Planning Considering Cloud Energy Storage [PDF]
ObjectivesIn order to promote the efficient utilization of energy storage and user-side resources and improve the level of clean energy consumption, a multi-area interconnected integrated energy system planning model considering cloud energy storage was ...
FAN Ming +3 more
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Shuitu Baochi Xuebao目的通过分析不同气候区自然植被的植被碳储量（VCS）和土壤碳储量（SCS）的变化趋势与环境要素对碳储量变化的驱动机制，以期为研究区制定适应气候变化的植被管理策略提供依据。方法通过构建基于LPJ-GUESS模型和随机森林方法的混合模型，模拟1851—2100年中国典型自然植被VCS和SCS的动态变化，结合Mann-Kendall趋势检验和Sen's斜率估计方法，分析碳储量动态变化与趋势特征。结果1）混合模型模拟自然植被的VCS和SCS的决定系数分别为0.83和0.61，均方根误差分别为2.42、3.73 ...
吴阳, 张杰琳, 彭守璋
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Gaoya dianqi, 2020 基于电磁斥力机构的快速机械开关是混合式高压直流断路器的核心设备之一,其几毫秒内分闸到位的速动性对直流断路器至关重要,然而其速动性对开关的缓冲提出了更高要求。文中提出了一种适用于电磁斥力机构分闸过程的电磁缓冲方法,介绍了电磁斥力机构和电磁缓冲的基本工作原理,并建立电磁斥力机构电磁缓冲装置的有限元模型,结合其原理仿真分析了缓冲储能电容容量、初始电压和缓冲触发时间对电磁缓冲性能的影响规律。最后对舟山示范工程200 kV直流断路器用快速机械开关进行了电磁缓冲试验,验证了仿真分析的正确性 ...
曾南薰 +6 more
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Typical feature extraction and modeling of complex power dynamic load signals [PDF]
The scale of clean energy and electric energy substitution is expanding with the rapid development of China's new power system and the steady introduction of “dual carbon” strategic goals.
Jing WANG, Jingxia CHEN
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Multi-Time Scale Optimization Strategy for New Distribution System Oriented to Photovoltaic Consumption and Low Carbon Demand Response of Ice Storage Air Conditioning Groups [PDF]
ObjectivesIn view of the limitations of the traditional distribution network demand response model in regulating the flexible and controllable resources on the load side, especially ignoring the unique and efficient resources such as ice storage air ...
GUO Junhong +5 more
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Shuitu Baochi Xuebao, 2008 采用实地调查和水浸法,研究了王朗保护区7种典型生态系统(草地(GL)、灌丛(SH)、白桦林(BF)、混交林(MF)、冷杉林(FF)、云杉林(SF)和方枝柏林(CF)的地被物层贮量吸水过程与最大储水量,并以此为基础评价该区域地被物层的水源涵养能力。结果表明:(1)不同生态系统地被物层贮量及其最大储水能力差异较大,其顺序依次为SF>FF>MF>CF>BF>SH>GL和SF>FF>MF>CF>SH>BF>GL;(2)在地被物的吸水过程中,储水量(Q)和吸水速率(S)与浸泡时间(t)的关系可分别用Q=c ln ...
鲜骏仁 +4 more
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