Guangtongxin yanjiu, 2017 针对超高压直流输电系统对光纤的特殊要求,研究了适用于超（特）高压直流输电测量和控制系统的几种特种光纤的主要性能指标。对光纤的芯层/包层直径、衰减值和最小弯曲半径等光学特性和阻燃等材料特性进行了研究,为寻找适用于超（特）高压直流输电测量和控制系统中不同应用环境且性价比较优的特种光纤提供了参考。通过实验分析得知,光纤的芯径越小,光纤在850nm的衰减值越小。因而在超（特）高压直流输电测量和控制系统应用中,当数据传输量较大、对传输信号带宽有一定要求时,倾向于选择小芯径（约62.5μm）的光纤 ...
林睿 +6 more
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Method and application of carbon emission calculation for ultra-high voltage (UHV) project construction [PDF]
, 2023 [Objective] As one of the seven key areas of “new infrastructure” development during China’s 14th Five-Year Plan period, the ultra-high voltage (UHV) projects are the backbone of China’s new power system and is of great significance to the transmission ...
CHEN Xiaohong, FU Yipeng, HUANG Chengdong, WANG Yangjie
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Research on Lightning Performance and Protective Measures of ±800 kV UHVDC Power Transmission Line [PDF]
, 2023 [Introduction] Lightning strike is the primary cause of failures of ±800 kV UHVDC power transmission lines, and the lightning protection assessment of power transmission lines is critical to the safe and stable operation of the system.
Youjun GONG, Zhiwen HE, Ziwei YAN
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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
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支撑新能源基地电力外送的电源组合优化配置策略研究 [PDF]
, 2023 新能源基地化开发和电力外送是实现能源电力清洁低碳转型的重要途径。新能源发电间歇性和波动性以及有限的输电走廊资源要求基地配置调节电源以提高新能源电力外送工程的可靠性和源网利用率。提出了基于广域长期历史气象数据，采用时序生产模拟电源扩展优化模型，进行不同送电方案下调节电源与新能源装机优化组合策略的研究方法。以内蒙古沙漠地区新能源基地为例的研究表明，电化学储能为代表的无源型调节电源应配置为外送通道容量的35%左右，从而实现合理的通道利用率和基地发输电经济性；配置有源型调节电源，可实现更高的外送通道利用率 ...
刘泽洪, 周原冰, 金晨
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Analysis on Influence Factors of Temporary Overvoltage of Load Rejection Fault of Offshore Wind Power Transmission System of Permanent Magnet Synchronous Generator [PDF]
, 2022 In order to evaluate the temporary overvoltage level of the wind power transmission system based on permanent magnet synchronous generator (PMSG) in case of load rejection, it is necessary to clarify the temporary overvoltage characteristics and its ...
CHEN Qiyu +6 more
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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
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, 2023 大容量试验是检验电力装备性能，保障装备安全可靠运行的重要环节。现有的大容量试验回路主要依靠人工操作，存在流程复杂、效率低且易出错的问题。针对大容量试验回路智能化控制的难题，研究建立了冲击发电机单电机短路模型和双电机并联短路模型，分析了发电机短路特性，结合典型大容量试验回路设计了一键顺控方案，提出试验回路一键顺控操作流程。通过对发电机短路模型和大容量试验回路系统的仿真 ...
吴益飞 +7 more
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全球能源互联网, 2020 模块化多电平换流器高压直流输电（modular multilevel converter based high voltage direct current，MMCHVDC）系统中链路延时对系统动态性能影响较大，如果延时设计不合理，会导致系统的稳定性变差。随着电压等级的提升，子模块数量相应增加，如何降低控制及保护的延时成为挑战。研究分析昆柳龙直流工程柳北换流站极1换流阀阀控下行、过流保护和上行3种链路延时的组成，提出了相应的测试方法，完成测试并提出优化方向。阀控下行、过流保护和上行链路延时分别小于40 ...
胡煜 +4 more
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Discharge characteristics and discharge simulation model of long air gaps containing a floating conductor [PDF]
, 2022 Long air gaps containing a floating conductor are common insulation types in power grids. During the transmission line live-line work, the process of lineman entering the transmission line air gap constitutes a live-line work combined air gap, which is a
Gao, Jiachen <1995>
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