Results 1 to 10 of about 23,320,538 (256)

A Collaborative Governance Strategy for Power Quality in AC/DC Distribution Networks Considering the Coupling Characteristics of Both Sides

Sensors, 2023
The interactions between power quality in the AC-DC distribution network segments contribute to the distributed propagation of power quality anomalies throughout the entire network.
Jiang Wang, Liang Qin, Yang Xiang, Penghui Ren, Xu Tang, Jiangjun Ruan, Kaipei Liu   +6 more
doaj   +1 more source

Reliability Evaluation of Wind Power Converter Under Fault-tolerant Control Scheme with Quantification of Temperature and Humidity Effects

Journal of Modern Power Systems and Clean Energy, 2023
Wind power converter (WPC) is a key part of a wind power unit which delivers electric energy to power grid. Because of a large number of semiconductors, WPC has a high failure rate.
Xueying Yu, Bo Hu, Kaigui Xie, Changzheng Shao, Yunjie Bai, Wenyuan Li, Jinfeng Ding   +6 more
doaj   +1 more source

Evaluation of Electric Field Integral Voltage Measurement Method of Transmission Line Based on Error Transmission and Uncertainty Analysis

Sensors, 2021
Electric field numerical integration algorithms can realize the non-contact measurement of transmission line voltage effectively. Although there are many electric field numerical integration algorithms, lack of a comprehensive comparison of accuracy and ...
Jiarui Fan, Cheng Ai, Aofei Guo, Xiaojun Yan, Jingang Wang   +4 more
doaj   +1 more source

A Review: Application of Terahertz Nondestructive Testing Technology in Electrical Insulation Materials

IEEE Access, 2022
As the voltage level of the grid continuously rises, more and more new insulating materials with better performance are put into use. Nevertheless, air gaps often appear in insulating materials due to poor material quality, structural design flaws, etc ...
Chenjun Guo, Wenlong Xu, Mingming Cai, Shufan Duan, Jianbiao Fu, Xinlong Zhang   +5 more
doaj   +1 more source

Optimisation method for efficiently determining feed parameters of phased array antenna in microwave wireless power transmission

IET Microwaves, Antennas & Propagation, 2023
In the microwave wireless power transmission (MWPT) system, to improve the beam collection efficiency (BCE) and decrease the impact of microwave on the ecological environment outside the receiving area, it is necessary to optimise the beam pattern of ...
Dongping Xiao, Liangliang Tian, Huaiqing Zhang, Xin Wang   +3 more
doaj   +1 more source

Operation State Identification Method for Converter Transformers Based on Vibration Detection Technology and Deep Belief Network Optimization Algorithm

Actuators, 2021
The converter transformer is a special power transformer that connects the converter bridge to the AC system in the HVDC transmission system. Due to the special structure of the converter transformer, it is necessary to test its operation state during ...
Yongye Wu, Zhanlong Zhang, Rui Xiao, Peiyu Jiang, Zijian Dong, Jun Deng   +5 more
doaj   +1 more source

Dynamic Cascading Failure Model for Blackout Risk Assessment of Power System With Renewable Energy [PDF]

E3S Web of Conferences, 2021
To assess the blackout risk of power system with high penetration of renewable, the existing cascading failure models need to be improved for capturing the dynamics and relays of renewable generation.
Wang Leibao, Hu Bo, Xie Kaigui
doaj   +1 more source

The Adsorption and Sensing Performances of Ir-modified MoS₂ Monolayer toward SF₆ Decomposition Products: A DFT Study

Nanomaterials, 2021
In this paper, the Ir-modified MoS2 monolayer is suggested as a novel gas sensor alternative for detecting the characteristic decomposition products of SF6, including H2S, SO2, and SOF2.
Hongcheng Liu, Feipeng Wang, Kelin Hu, Tao Li, Yuyang Yan, Jian Li   +5 more
doaj   +1 more source

Anti-Overturning Fully Symmetrical Triboelectric Nanogenerator Based on an Elliptic Cylindrical Structure for All-Weather Blue Energy Harvesting

Nano-Micro Letters, 2022
Triboelectric nanogenerators (TENGs) have shown promising potential for large-scale blue energy harvesting. However, the lack of reasonable designs has largely hindered TENG from harvesting energy from both rough and tranquil seas.
Dujuan Tan, Qixuan Zeng, Xue Wang, Songlei Yuan, Yanlin Luo, Xiaofang Zhang, Liming Tan, Chenguo Hu, Guanlin Liu   +8 more
doaj   +1 more source

Reliability modelling and analysis on MMC for VSC-HVDC by considering the press-pack IGBT and capacitors failure

The Journal of Engineering, 2019
Modular multi-level converter (MMC) with press-packing IGBT devices is the popular and key equipment of VSC-HVDC system, its reliability is directly related to the equipment safe operation.
Li Hui, Zheng Meimei, Yao Ran, Lai Wei, Deng Jili, Long Haiyang, Qu Haitao   +6 more
doaj   +1 more source