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500kV直流断路器快速机械开关典型故障特性及可靠性提升方法研究 [PDF]
, 2023 直流断路器是构建柔性直流电网不可或缺的关键设备。快速机械开关是直流断路器中承载电流、实现快速分合闸、耐受分闸恢复电压的核心组件，其结构复杂、动作速度快、电气应力严酷、可靠性要求高，因而设计研制难度大，任一环节出现问题均会影响直流断路器乃至柔直电网的安全可靠运行。然而，目前快速机械开关由于存在设计选型不合理、工艺管控不严格、试验考核不完善等问题，导致在实际工程应用中故障率较高。针对已应用于张北柔性直流电网试验示范工程的500 kV直流断路器，分析了直流断路器研制、调试 ...
张涛 +4 more
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基于小波变换和随机森林算法的高压断路器机构机械特性监测技术研究
Gaoya dianqi, 2022 针对高压断路器弹簧机构机械特性监测数据类型单一、机械特性状态识别准确率低等问题，以平高集团有限公司CT601-2型弹簧操动机构为基础，提出一种小波变换与随机森林算法结合的高压断路器弹簧机构机械特性监测与状态识别方法。文中首先详细分析了机构机械故障类型，其次通过小波变换对电流、行程信号进行预处理，最后采用随机森林算法实现断路器机械状态识别。通过大量的仿真与试验表明，该高压断路器弹簧机构机械特性状态识别方法识别准确率达到94.67%，具备准确率高、实用性强等优点，可为高压断路器机构机械特性方面的研究提供参考，
李文艺 +3 more
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Gaoya dianqi, 2022 环境温度变化对液压操动机构的机械特性(含缓冲特性)影响较大，特别是温度较低的运行环境，甚至会影响到产品的可靠运行。文中通过液压弹簧操动机构仿真建模，对其机械特性进行了仿真分析，研究了液压弹簧操动机构在不同温度下的机械特性(含缓冲特性)，重点对低温工况下的低温特性进行了分析和试验研究，为液压弹簧操动机构的优化设计以及运维提供了依据。
梁传涛, 贾丽丽
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Gaoya dianqi, 2023 真空断路器机械特性试验是配电网安全稳定运行的重要保证，传统的人工试验方式由于劳动强度大、效率低且试验质量难以保证，已不能满足配电网发展的需求。针对这一问题，文中开展了基于激光位移传感器的真空断路器机械特性机器人试验平台的研究。结合机器人试验平台的实际情况，提出了利用激光位移传感器实现真空断路器行程测量的方法；分析了激光和滑线电阻位移传感器在真空断路器机械特性测试的异同性，研究并解释了滑线电阻位移传感器的万向接头间隙对真空断路器分闸反弹幅值测试的影响机理 ...
王俊波 +5 more
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Mechanoluminescent Mixed‐Anion Borate Sr2B5O9Cl:Eu for Dynamic Anticounterfeiting
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mechanoluminescence (ML)—the emission of light in response to mechanical stimuli—offers a direct and visually intuitive route for transducing mechanical information into optical signals. Herein, we report a mixed‐anion strategy to prepare mixed‐anion borate Sr2B5O9Cl:Eu phosphors through a facile, low‐temperature, and ambient‐atmosphere solid ...
Yuhong Han +7 more
wiley +1 more source
Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT The development of structurally stable anodes with high capacities and long cycle lives is essential for the development of potassium–ion batteries. Conversion‐type anodes have attracted considerable attention in potassium–ion batteries (PIBs) due to their high theoretical capacities.
Jeong Ho Na +7 more
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou +5 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan +9 more
wiley +1 more source
Gaoya dianqi, 2017 笔者在理论分析操作机构标准和异常机械特性曲线基础上,对40.5、252、1 100 kV 3个电压等级的高压断路器液压弹簧和弹簧操作机构的机械特性进行了测试,同时研究了操作机构机械特性参数变化对操作机构机械性能的影响。理论及试验研究表明:操作机构的机械特性能够反映机构的机械状态,通过对操作机构机械特性的分析可以评估操作机构的运行状况,研究结果对断路器操作机构状态评估具有一定的指导意义。
付荣荣 +7 more
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