Research on the Key Parameters and Device Capacity Decoupling Analysis of Full Bridge MMC DC Ice-Melting Device [PDF]
, 2023 [Introduction] This article aims to study the issue of the melting capacity and reactive output capacity of the full bridge modular multi-level converter (MMC) type DC (Direct Current) melting ice device under different operating modes.
Rui HE, Xiaogang WU
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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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考虑谐波谐振和电压稳定的海上风电场无功优化配置方法 [PDF]
, 2023 海上风电经长距离高压交流海底电缆接入电网，海底电缆容升效应显著，容易引起工频过电压，同时电力电子器件和线路电容引起的谐波谐振问题也严重影响着电网电能质量，因此进行海上风电场无功配置时应充分考虑过电压和谐波谐振问题。针对上述问题，建立了海上风电场谐波模型，对海上风电场的谐波模态阻抗进行扫描，继而分析海上风电场的谐振特性；然后研究了海上风电场无功特性，计算各种发电出力水平和并网点电压下的风电场无功缺额；接着以降低综合成本为目标，以静态电压稳定裕度、最小补偿容量、谐波谐振及过电压为约束 ...
杜婉琳*, 梅桂华, 王玲, 马明
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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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, 2023 含高比例新能源的直流外送系统由于送端发电设备支撑能力薄弱，在直流故障发生后新能源发电设备面临着过电压脱网风险。为了防止新能源脱网事故的发生，首先建立新能源直流外送系统仿真模型分析新能源机端暂态过电压形成机理，其次根据无功传输规律分析常规机组、调相机、电气距离等因素对新能源脱网的影响，定量分析常规机组的电压调节灵敏度，在此基础上利用新能源短路比指标对新能源脱网情况进行量化分析，最后根据分析结果提出了提高短路容量、提高风机高压穿越能力等预防直流故障后新能源脱网的策略 ...
严欢 +5 more
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Application and Prospect of Flexible Transmission and Distribution Technology in Internet Data Center [PDF]
, 2023 [Introduction] As an important thrust of China's "new infrastructure", internet data centers have ushered in opportunities for vigorous development and become new areas of energy use, putting forward higher requirements for the power supply level and ...
Deyang CHEN +7 more
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, 2023 在推动中国新能源高质量跃升式发展背景下，大规模新能源开发、汇集和远距离输送成为新能源建设的重要路径之一，特大型新能源基地成为未来的重要形态。由于缺少常规交流同步发电机组和可靠备用容量，特大型新能源基地稳定性挑战、新能源利用率与供电充裕性矛盾凸显，其形态结构及演化路径成为当前关切的热点问题。系统梳理了当前最新学术研究成果，研判特大型新能源基地未来可能的源网形态并做特征分析；进一步，面向特大型新能源基地系统强度弱、灵活性不足、源网协调运行矛盾突出等挑战，针对性提出源网协调规划 ...
张玮 +5 more
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Wireless Autonomous Power Flow Control in Converter-Fed Microgrids [PDF]
, 2014 When total apparent power of the energy storage system (ESS) interfacing converter is fixed, the higher the requirement on reactive power in the microgrid system with distributed multiple converters, the weaker the ability of ESS to balance theactive ...
Guerrero, Josep M. +4 more
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Research on Construction Mode of Large-Scale Offshore Wind Power Centralized Transmission [PDF]
, 2023 [Introduction] Offshore wind power has become a research hotspot in the development of global wind power. China's offshore wind power is still in its infancy, the current operation mode is not conducive to the large-scale centralized transmission of ...
Ni LI +3 more
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New Generation High-Performance VSC-HVDC Back-to-Back Technology and Application in Project [PDF]
, 2023 [Introduction] Due to the dense load, complex grid structure, and close electrical connections in the Guangdong power grid area, there are three major problems for a long time: the risk of large-scale power outages, the interaction between AC and DC, and
Bo ZHU +5 more
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