Results 41 to 50 of about 24,205 (164)

Failure analysis of four tube in power station boiler [PDF]

open access: yes, 2015
火力发电厂是我国供电主体,约占总体发电量的70%。大型火电厂的安全事关电网的安全运行,而火电厂中的锅炉运行的可靠性是影响发电厂运行可靠性的首要因素,尤其是锅炉四小管的损坏泄漏对机组的安全运行影响最大,是火力发电厂的常见事故,一般占机组故障的60%-70%。锅炉经常由于四小管设计、制造、安装、运行、修理改造、管理等环节的问题以及长期在高温、高压、腐蚀、冲刷等恶劣条件下运行等原因而造成爆管并导致停炉。只有掌握四小管各种类型爆管的失效机理,才能有的放矢开展监督检验工作,寻找有效的管理和技术防治对策 ...
左仁红
core  

Synergizing Public Incentives and Private Capital: A Hybrid RAB‐RBF Framework for Low‐Carbon Energy Infrastructure Access in Low‐ and Middle‐Income Countries

open access: yesJournal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.
ABSTRACT Regulated asset base (RAB) and results‐based financing (RBF) are key emerging infrastructure finance models, offering stable returns (RAB) and outcome‐based incentives (RBF). This perspective proposes a hybrid RAB‐RBF model to bridge the “viability gap” in developing regions and catalyze low‐carbon energy infrastructure access where cost ...
Hafiz Ahmed
wiley   +1 more source

CANbus System Research and Application on the Industrial Vehicle Based on J1939 Potocol [PDF]

open access: yes, 2015
随着科技创新的不断发展,特别是近些年电子技术的日新月异,以及微电子 技术的广泛应用,越来越多的电子产品应用的车辆技术中,工程车辆领域也不例 外。越来越多的电子技术应用到其中。特别是CAN总线技术的广泛应用,给工 程车辆的电气控制技术带来了很大的技术革新。 本文将以本人的工作性质,即开发设计工程车辆的电气系统,根据目前的集 装箱空箱堆高机的技术落后的现状,采用当前引领技术潮流的J1939协议总线技 术,开发适合堆高机总线控制电气系统,对工程车辆将来的技术发展和创新有积 极的意义 ...
周维和
core  

Realizing Ultrahigh Dielectric Constant With Ultrawide Temperature Stability in Dual‐Phase BNT‐BST Ceramics by SPS Sintering

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Ceramic capacitors are critical components in advanced electronic devices, primarily due to their multi‐functionalities in energy/information storage and conversion. However, poor temperature stability remains a long‐standing challenge for practical applications, especially at extremely high‐ or low‐temperature conditions (e.g., > 200°C or ...
Zhi‐Peng Li   +7 more
wiley   +1 more source

Control strategy research for PV DC microgrid with hybrid storage system [PDF]

open access: yes, 2016
以光伏、风电等可再生能源为主的分布式发电技术因为其随机性、不稳定性,对配电网潮流改变带来的安全性等问题,其发展得到一定的制约。微电网被广泛认为是解决分布式发电技术应用瓶颈的有效解决方案,而直流微电网以直流形式传输电能,控制结构简单,不需考虑频率和相位,系统损耗小,效率高,也更加适合越来越多的直流电器的接入,因此具有很强的推广实用价值。本文在研究了直流微电网的国内外研究发展现状、架构,以及包括控制技术、储能技术、保护技术等关键技术基础上,对包含有蓄电池和超级电容器在内的光伏直流微电网系统进行了研究 ...
杨贇
core  

Achieving Crack‐Free Laser Powder Bed Fusion of AlxFeCoCrNi Alloys With B2‐Decorated Substructures via Low‐Al In Situ Alloying

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT The B2 phase is a critical strengthening constituent in AlxFeCoCrNi high‐entropy alloys (HEAs), and introducing such phases onto the nanoscale cellular substructures is an ideal pathway for strengthening alloys fabricated by laser powder bed fusion (L‐PBF).
Xiangjian Zhu   +5 more
wiley   +1 more source

Design and Implementation of Intelligent Monitoring System for Power Distribution Room [PDF]

open access: yes, 2016
随着我国经济实力的不断增强,电力系统也取得了显著的成就。当前我国电网规模不断扩充。居民对于供电的可靠性与质量要求大幅提高。因此,如何确保提供经济安全、优质可靠的电力是我国电力系统在未来发展中面临的重要挑战之一。配电室作为电力系统中的重要组成元素,担负着电能的变压分流的重任,传统的配电室管理手段主要是依靠人工定时对电力仪表进行检查并形成报表,其工作效率低下,无法适应迅速发展的供电规模与居民的用电需求。如何利用信息技术与网络传输技术对配电室电力设备的运转状态进行远程实时监控,提高配电室管理的信息化水平 ...
姜维伟
core  

The Role of the European Union in Managing African Crises Between Development Aid and Geopolitical Interests

open access: yesWorld Affairs, Volume 189, Issue 1, Spring 2026.
ABSTRACT This study conducts a comprehensive and critical examination of the interplay between development assistance and strategic geopolitical objectives in the European Union's (EU) engagement with African crises. Although the EU positions itself as a normative power committed to advancing peace, development, and human rights, its practices often ...
Edmond Chick   +1 more
wiley   +1 more source

浅析高压SF6断路器可靠性研究的特点和难点

open access: yesGaoya dianqi, 2013
高压SF6断路器是电网中的重要元件,它对电网运行的可靠性有着重要影响。笔者以高压SF6断路器为分析目标,讨论了高压SF6断路器可靠性研究的目的,并论述了可靠性研究的发展现状。结合高压SF6断路器的技术特点,讨论了高压SF6断路器进行可靠性研究的特点;针对高压SF6断路器的开合、绝缘、载流、静态结构、机构及传动、辅助和控制回路等6个功能模块,分析了对其进行可靠性研究的难点;最后,总结了对高压SF6断路器密封元件进行可靠性评估的可能手段和方法。
魏泉   +6 more
doaj  

Smart LED Lighting with brightness control and adjustable color temperature [PDF]

open access: yes, 2015
光带给人类以光明与希望。LED光源更是在照明领域崭露头角,与传统的照明方式相比,LED照明不仅能简单地进行亮度调节,还能进行各种色彩与色温调节。本论文根据市场对节能、健康、舒适和智能照明的需求,设计并实现了一款调光调色温球泡灯智能控制系统。设计开发了一款10W的2.4G射频智能调光调色温LED照明驱动系统,可实现30米距离的遥控控制。该驱动系统所涉及功率范围能功率因数大于0.8。在此基础上提出一种基于PWM的算法对两路白光LED进行独立的调光调色温,完成了控制电路和遥控器的整套系统集成 ...
陈巧敏
core  

Home - About - Disclaimer - Privacy