Results 51 to 60 of about 6,670 (169)
Gaoya dianqi, 2020 随着智能电网的发展和电网规模的迅速增长,及时、准确地掌握电力设备的状态面临巨大的问题和挑战,电网设备的精准运维检修对电力设备真实状态透明化提出了迫切的需求,新一代信息技术"云大物移智"等发展给传统电力设备的智能化提供了基础条件。文中依据现代控制理论、可靠性工程理论,结合电力设备运维检修的需要和国内外的研究现状,通过理论分析的方法,提出基于故障模式分析的电力设备状态空间模型的建立方法,基于故障模拟试验数据修正的电力设备工程仿真计算模型的建立方法,基于电力设备全景数据指纹库的电力设备状态评估模型的建立方法 ...
彭在兴, 王颂, 陈曦
doaj
A Technology and Application of Fiber Temperature Sensor for High Voltage Circuit Breaker [PDF]
, 2015 随着中国经济的高速发展，电网规模的日益庞大，高压断路器作为电力系统中必不可少的电气设备之一，其工作状态是否正常关乎整个电力系统能否安全高效地运行。为了避免高压断路器因电阻过大或其他故障引起的局部温度超过国家标准而引发停电、火灾等大规模事故，对高压断路器的温度进行实时监测是十分必要的。 针对10KV断路器在线温度监测难的问题，本文提出一种基于反射式强度调制的光纤温度传感系统。本温度传感系统具有非接触、抗电磁干扰能力强、安装便利、性能稳定等优点，此外，本文选用双金属片作为温度敏感元件，价格低廉 ...
单晓宇
core
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Tellurium (Te), emerging as a promising alternative to sulfur (S) and selenium (Se), offers significant advantages for potassium (K) ion storage due to its comparable theoretical volumetric capacity (2619 mAh cm−3) and higher electronic conductivity (∼102 S m−1), which promotes rapid charge transfer and improves reaction kinetics.
Sung Woo Cho +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Fe‐based amorphous alloys are attractive soft magnetic materials for next‐generation power electronics, yet simultaneously achieving high saturation magnetic flux density (Bs), low coercivity (Hc), and low core loss under scalable processing conditions remains challenging.
Zhi‐Jun Guo +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT A major challenge in fabricating eutectic NiTiNb alloys is the incomplete melting of Nb due to its much higher melting point than the NiTi matrix. In this work, a novel electron‐beam freeform additive manufacturing strategy is developed to eliminate unmelted Nb particles and achieve a fully eutectic structure through independent dual‐wire ...
Qing‐Da Zhang +9 more
wiley +1 more source
The Study of Fabrication Technology for Absorption Layer and Mo Electrode based CIGS Thin-Film Solar Cell [PDF]
, 2015 铜铟镓硒薄膜太阳电池是现今薄膜太阳电池领域发展前景最好的电池之一。在当前的薄膜电池产业化领域中，溅射后硒化技术适合于大面积规模化制备CIGS薄膜电池。本论文分两部分内容，第一部分是围绕溅射后硒化法两步工艺制备高质量的Cu(In1-xGax)Se2(CIGS)薄膜，并对CIGS薄膜性能进行了研究。第二部分是，在CIGS吸收层与Mo电极整合过程中，系统研究了Mo电极的制备工艺在硒化热处理中存在的技术问题。 第一部分利用CuGa(3:1at%)合金靶和单质In靶双靶交替磁控溅射制备CuInGa金属预制层 ...
陈伟
core
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du +9 more
wiley +1 more source
Design and Implementation of State Estimation and Management for a Power Enterprise [PDF]
, 2015 电力系统运行的安全性和可靠性直接关系到国家经济的发展，同时也是维系国家安全和社会稳定的重要因素，因此电力一直是国家的支柱能源和经济命脉。目前电力系统运行的各种约束条件日益强化，其运行方式和网架结构也越来越复杂，这是因为电力行业向大系统、超高压、远距离、大容量方向发展。为了给调度工作人员提供相关技术支持，通常采用电网能量管理系统(EMS)来集成各种数据。EMS能够为电网的安全运行奠定良好的基础。作为EMS的不可或缺的重要部分之一，状态估计能够为系统提供可靠完整的信息和系统状态数据 ...
莫明江.阿不力克木
core
Rare Metals, Volume 45, Issue 2, February 2026.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
wiley +1 more source