Results 1 to 10 of about 248,694 (310)

Impact of Power Transformer Oil-Temperature on the Measurement Uncertainty of All-Acoustic Non-Iterative Partial Discharge Location. [PDF]

Materials (Basel), 2021
Polužanski V, Kartalović N, Nikolić B.   +2 more
europepmc   +3 more sources

High-Frequency Current Ripple Sample Anti-Aliasing Strategy of Digitally Controlled Converter Based on Notch Filter

IEEE Access, 2023
The digital controller of the grid-connected converter achieves closed-loop control by sampling key voltage and current signals. High-frequency switching of power electronic switches introduces high-frequency ripples into the signals, which may cause ...
Ma Chunyan, Duan Qing, Sheng Wanxing, Li Yuguo, Wang Haoqing   +4 more
doaj   +1 more source

Three-Phase Four-Wire OPF-Based Collaborative Control of PV Inverter and ESS for Low-Voltage Distribution Networks With High Proportion PVs

Frontiers in Energy Research, 2021
The use of photovoltaic reactive power and energy storage active power can solve the problems of voltage violation, network loss, and three-phase unbalance caused by photovoltaic connection to low-voltage distribution networks.
Jinwei Fu, Tianrui Li, Shilei Guan, Yan Wu, Kexin Tang, Yan Ding, Zhi Song   +6 more
doaj   +1 more source

Loop-to-Loop Magnetic Coupling Through a Circular Aperture in a Planar PEC Screen of Finite Thickness

IEEE Access, 2022
An analytical formulation for magnetic field penetration through a circular aperture in a thin perfect electric conductor (PEC) screen with finite-thickness is developed.
Feiyan Zhou, Yan Wu, Zhixin Zhang, Lingyun Gu, Xuefeng Bai, Yan Wu, Chongqing Jiao   +6 more
doaj   +1 more source

Evaluation Index and Evaluation Method of Three-Phase Imbalance Treatment Effect Based on Commutation

IEEE Access, 2022
With the construction and development of the distribution Internet of things in China, the three-phase imbalance treatment in the distribution area has gradually attracted attention as an optional function, and a large number of intelligent terminal ...
Jie Chen, Feiyan Zhou, Lingyun Gu, Hui Yin, Li Zhang, Chaofei Gao   +5 more
doaj   +1 more source

Study on Oil Flow Surging and Protection Optimization for on Load Tap Changer of Converter Transformer

Frontiers in Energy Research, 2022
The on-load tap changer (OLTC) is one of the key components of converter transformer. The energy generated during tap switching process of the OLTC will cause thermal expansion and surging of the insulating oil in the chamber, resulting in the mis ...
Haibin Zhou, Zhicheng Xie, Xing Chen, Qinggang Guan, Jun Deng, Guanwei Liu, Xiaojiang Yan   +6 more
doaj   +1 more source

A Multiport Electric Energy Routing Scheme Applied to Battery Energy Storage System

Journal of Engineering, 2021
In this paper, the research status of topology and control strategy of energy storage grid-connected system is analyzed, and aiming at the working characteristics of the repurposed battery, a cascade power electronic transformer (CPET) with independent ...
Guanglin Sha, Qing Duan, Wanxing Sheng, Aiqiang Pan, Zhe Liu, Chunyan Ma, Caihong Zhao, Jiaxun Teng, Lumin Fu, Yi Zheng   +9 more
doaj   +1 more source

Research on new energy vehicle charging prediction based on Monte Carlo algorithm and its impact on distribution network

Frontiers in Energy Research, 2023
With the vigorous promotion of new energy policies, the large-scale charging of new energy vehicles has put forward higher requirements for the safety and stability of the distribution network.
Zheng Li, Chuan Li, Baoqiang Zhang, Qing Duan, Lu Liu, Guoqiang Zu, Qian Li   +6 more
doaj   +1 more source

Combined Duval Pentagons: A Simplified Approach

Energies, 2020
The paper describes a newly proposed combination of the two existing Duval Pentagons method utilized for the identification of mineral oil-insulated transformers. The aim of the combination is to facilitate automatic fault identification through computer
Luiz Cheim, Michel Duval, Saad Haider
doaj   +1 more source

Introduction on Current Application of Voltage Transformer [PDF]

E3S Web of Conferences, 2023
As an important equipment, voltage transformer is widely used in power grid to obtain voltage signal and protect the system. In this paper, the voltage transformers in power system are classified according to the working principle.
Yang Jun, Fan Ziming, Yang Yue, Zhao Xiayao   +3 more
doaj   +1 more source