Results 11 to 20 of about 1,797 (167)
LCC-HVDC Converter Station Reactive Power Optimization and Two-Layer Coordination Strategy Research Based on Synchronous Sondenser [PDF]
, 2023 [Introduction] Under the existing converter station reactive power compensation scheme, the synchronous condenser only provides transient reactive power support, and the AC (Alternating Current) filter undertakes steady-state reactive power compensation ...
Dongqing ZHANG +3 more
core +1 more source
Gaoya dianqi, 2022 随着国内外光伏发电系统的大规模推广和应用，光伏并网逆变器短路故障耐受性能关乎人身安全和系统安全，已经成为设备安全性考核最重要的指标。为了研究逆变器内部短路故障的试验方法以及短路故障对其结构工艺的影响，文中通过对光伏逆变器常规电气性能试验回路、大容量短路试验回路以及相关标准测试要求的研究分析，建立了一种光伏逆变器内部短路故障耐受性能试验方法，并通过搭建试验回路，对该测试方法进行了验证，进一步对试验结果进行了分析。结果表明：设计的试验回路能够实现逆变器内部故障短路试验要求 ...
张长春 +4 more
doaj
全球能源互联网, 2018 架空线柔性直流电网是实现大规模可再生能源广域协调互补和可靠送出的有效解决方案，是未来高压大容量柔性直流输电的重要应用方向。直流线路短路电流是柔性直流电网中换流阀、直流断路器及电抗器等关键主设备参数选取的重要依据之一。通过建立双极柔性直流电网单个换流站在直流线路不同短路故障类型下的等效电路数学模型，构建了故障时刻双极柔性直流电网等效电路网络模型，提出了一种适用于双极柔性直流电网的单极接地、单极接中性线及双极短路的暂态短路电流定量分析方法，实现了双极柔性直流电网直流线路任意故障类型 ...
裴翔羽 +5 more
doaj +1 more source
Dianci bileiqi, 2023 短路故障和断线故障是配电网常见的线路故障，对配电网安全稳定运行有重要影响。本研究以不接地配电系统为对象，提出在线路绝缘子内部集成陶瓷电容，通过电容分压检测配电网线路故障的暂态电压信号，进而实现配电线路故障检测的新方法。采用PSCAD/EMTDC软件建立了短路故障和断线故障情况下配电系统的仿真模型，研究了典型故障工况下绝缘子内置电容分压器监测的线路电压特征。结果表明：对于低阻和中阻接地故障，线路故障相电压迅速减小至稳定值，健全线路对应相的电压欠阻尼振荡衰减至稳定值，故障线路与健全线路的暂态高频信号特征明显；
黄继盛, 刘红文, 唐钊, 张春丽
doaj
Research on the Design of Operating Condition of Multi-Resistance Superconducting DC Current Limiter [PDF]
, 2023 [Introduction] The working principle of the resistive superconducting current limiter is based on the zero resistance effect of the superconductor, which is connected in series in the line and basically has no resistance during normal operation. When the
Jinchuan GUO, Qin YIN
core +1 more source
Research on Fault Current Controller of DC Microgrid [PDF]
, 2023 [Introduction] With the rapid development of AC/DC distribution networks and distributed generation technology, the role of DC microgrids in distribution networks is becoming increasingly important and will become an important component of future ...
Cong LIN, Fang GUO, Xiangfeng LI
core +1 more source
Gaoya dianqi, 2021 由于采用管道密封绝缘输电,GIL系统受地形、天气和外界环境干扰较小,采用架空线—GIL混合系统输电会变得越来越普遍。当混合系统短路故障时,其电流分布将异于正常输电线路。为了明晰混合系统短路电流分流问题,文中首先建立了架空线—GIL混合输电系统模型,通过开关闭合操作模拟设置输电侧导线发生接地短路故障,GIL管廊内三相导线电流的增强倍数在1.01～2.08倍之间,且当发生三相接地短路故障时的电流增强倍数最高;设置GIL管廊内部导线发生接地短路故障,GIL管廊内三相导线电流的增强倍数在1.05～21 ...
汤亮亮 +5 more
doaj
Power System Transient Stability Preventive Control Optimization Method Driven by Stacking Ensemble Learning [PDF]
, 2023 Aiming at the contradiction between the rapidity requirement of online calculation of transient stability preventive control and the computational complexity of time-domain equations, a stacking ensemable learning driven optimization method for power ...
HU Wei +7 more
core +1 more source
水电科技在电网运行工程中，因为诸多因素的影响经常会出现这样或那样的问题，对于10KV电网来说也是如此，为了及时排除故障，恢复电力，电力企业必须要予以高度的重视，对配电线路发生故障的原因进行仔细的检查，通过科学的定位技术在第一时间锁定故障发生的位置，结合其他先进技术解及时予以有效的解决，缩短停电的时间，提高电网运行的效率。
小存 吴
semanticscholar +1 more source
Application of Magnetic Coupling Resonance Wireless Power Transfer in Power System [PDF]
, 2022 Wireless power transfer (WPT) can transmit electric wirelessly. It performs better under some paticular circumstances compared with the traditonal transmission mode.
HE Hao +4 more
core +1 more source