Results 11 to 20 of about 130,007 (263)

Pilot Protection Scheme of Submarine Cable in Flexible Low-Frequency Transmission System Based on Cross Entropy Algorithm

Zhongguo dianli, 2023
There are power electronic converters on both sides of the AC submarine line of flexible low-frequency transmission system, and the fault current characteristics are determined by the converter control strategy, which is different from the traditional ...
Weixuan HE, Zhengzhen FAN, Yaotong HUO, Yingyu LIANG   +3 more
doaj   +1 more source

Fault Characteristic Analysis and a Novel Pilot Protection Scheme for Pole-to-Ground Fault in Flexible DC Distribution Network

IEEE Access, 2023
Due to the pseudo-bipolar structure of the flexible DC distribution network, the short-circuit current caused by a pole-to-ground fault is weak. The fault characteristics, particularly the steady-state fault characteristics, are not prominent. Therefore,
Hao Qi, Wei Chen, Zhenlan Dou, Jiexiang Han, Pei Sun, Zhe Zhang, Xianggen Yin   +6 more
doaj   +1 more source

Enhancing Resilience and Reliability of Active Distribution Networks through Accurate Fault Location and Novel Pilot Protection Method

Energies, 2023
The integration of distributed generation (DG) into the decentralized access of the distribution network transforms the existing structure into an active distribution network.
Lin Xu, Songhai Fan, Hua Zhang, Jiayu Xiong, Chang Liu, Site Mo   +5 more
doaj   +1 more source

Parameter Evaluation Procedure for Gapped Core Current Transformers Considering Accuracy Requirements under Transient Conditions [PDF]

E3S Web of Conferences, 2020
Particular features of gapped core current transformers and characteristics of transient phenomena inside them are under consideration; a procedure is proposed that allows for evaluating the excitation limiting e.m.f.
Vorobiev Victor, Moskalenko Vadim, Rasshcheplyaev Anton, Nudelman Goda, Navolochny Alexander, Onisova Olga, Naumov Ivan   +6 more
doaj   +1 more source

Non-Pilot Protection of the Inverter- Dominated Microgrid [PDF]

IEEE Access, 2019
Without utilizing costly communication systems, the existing protection strategies fail to reliably detect the occurrence and direction of faults in the inverter-dominated microgrid. To address this issue, this paper introduces a selective and reliable non-pilot protection strategy for the inverter-dominated microgrid. The proposed protection strategy (
Houman Lahiji, Firouz Badrkhani Ajaei, Ryan E. Boudreau   +2 more
openaire   +2 more sources

Mechanically-assisted crevice corrosion and its effect on materials degradation

Corrosion Communications, 2023
Mechanically-assisted crevice corrosion (MACC) is a synergistic combination of wear and crevice corrosion. The major differences between tribocorrosion, fretting corrosion and MACC relate to the relative scale of motion and contact area, are clarified in
Weichen Xu, Binbin Zhang, Owen Addison, Xiutong Wang, Baorong Hou, Fei Yu   +5 more
doaj   +1 more source

Microstructure Refinement on Crevice Corrosion of High-Speed Rail Steel U75V Visualized by an In Situ Monitoring System

Frontiers in Materials, 2022
Rail foot covered by a fastener will suffer from crevice corrosion, leading to thinning and localized attack of crevice interior posing a risk of failure. This work investigated crevice corrosion behavior of a typical pearlitic high-speed rail steel U75V,
Jian Wang, Jian Wang, Jian Wang, Binbin Zhang, Binbin Zhang, Binbin Zhang, Weichen Xu, Weichen Xu, Weichen Xu, Jie Zhang, Jie Zhang, Jie Zhang, Lihui Yang, Lihui Yang, Lihui Yang, Zhongbo Peng, Baorong Hou, Baorong Hou, Baorong Hou   +18 more
doaj   +1 more source

The Pilling-Bedworth Ratio of Oxides Formed From the Precipitated Phases in Magnesium Alloys

Frontiers in Materials, 2021
The Pilling-Bedworth ratio of oxides preferentially formed from the precipitated phases in magnesium alloys were calculated. The results showed that the PBR value of Nd2O3 preferentially formed from Mg12Nd was 1.0584, and the PBR value of Y2O3 ...
Quantong Jiang, Quantong Jiang, Quantong Jiang, Dongzhu Lu, Dongzhu Lu, Dongzhu Lu, Chang Liu, Chang Liu, Chang Liu, Nazhen Liu, Nazhen Liu, Nazhen Liu, Baorong Hou, Baorong Hou, Baorong Hou   +14 more
doaj   +1 more source

Two metabolic stages of SRB strain Desulfovibrio bizertensis affecting corrosion mechanism of carbon steel Q235

Corrosion Communications, 2023
Desulfovibrio bizertensis (D. bizertensis), an SRB isolated and cultured from the rust layer of the South China Sea, is widespread in the corrosive microbial communities on steel surface.
Xucheng Dong, Xiaofan Zhai, Jing Yang, Fang Guan, Yimeng Zhang, Jizhou Duan, Baorong Hou   +6 more
doaj   +1 more source

Exceptional atmospheric corrosion inhibition performance of super-hydrophobic films based on the self-propelled jumping behavior of water droplets

Corrosion Communications, 2021
Super-hydrophobic surfaces have attracted much attention for their potential applications based on the lotus effect, especially in corrosion protection. However, the lotus effect has limited application given its high dependence on external forces, such ...
Peng Wang, Xiaotong Chen, Tianping Li, Haoyuan Cai, Dun Zhang   +4 more
doaj   +1 more source