Results 71 to 80 of about 2,664 (218)

Tradeoffs between AC power quality and DC bus ripple for 3-phase 3-wire inverter-connected devices within microgrids

, 2011
Visions of future power systems contain high penetrations of inverters which are used to convert power from dc (direct current) to ac (alternating current) or vice versa.
Roscoe, Andrew, Burt, Graeme, Finney, Stephen J., Stephen J. Finney, Finney, Stephen, Burt, Graeme M., Andrew J. Roscoe, Graeme M. Burt, Roscoe, Andrew J.   +8 more
core   +1 more source

Enhancing the protection of photovoltaic-based DC microgrids using circuit breaker operation sequence

International Journal of Electrical Power & Energy Systems
The advancement of direct current (DC) microgrids is limited by insufficient operational experience, the inadequacy of suitable protective devices, and the absence of effective fault analysis methods.
Nahid Zamani, Mehdi Bigdeli, Amir Ghorbani, Heba Ahmed Hassan   +3 more
doaj   +1 more source

Defects‐Triggered In Situ Reconstruction in Metal‐Halide Perovskites for Photo‐Rechargeable Lithium‐Ion Batteries

Interdisciplinary Materials, EarlyView.
This work presents a strategy for the in situ formation of heterostructures in bifunctional photoelectrodes for photo‐rechargeable lithium‐ion batteries (PRLIBs). Defect‐driven reconstruction in metal‐halide perovskites (MHP) activates Cu+/Cu2+ leaching from the current collector, thereby enabling the in situ formation of CuO/CuI‐MHP heterojunctions ...
Zihan Liu, Xin Chen, Hancheng Ma, Wen Li, Fang Liu, Wei Yang, Xiangning Chen, Zhenghuai Sun, Xuyun Guo, Yuhang Dai, Ze He, Yao Ding, Qinyou An   +12 more
wiley   +1 more source

Optimal Adjustment of Dualsetting Overcurrent Relays in Inverter-Based Microgrids [PDF]

Iranian Journal of Electrical and Electronic Engineering, 2023
Increasing the penetration of distributed generation (DG) systems in power systems has many advantages, but it also has problems, including interference with the proper functioning of the protection systems.
Seyed Masoud Barakati, Farzad Tahmasebi
doaj  

Frequency Shaping for Improving a Trade‐Off Between Control and Privacy Performance: Beyond Differential Privacy

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT In privacy protection of control systems, a trade‐off between control performance and privacy level is often pointed out. Our goal in this paper is to improve this trade‐off by shaping the frequency of noise added for privacy protection when the control objective is to track a reference signal, which is taken as a piece of information whose ...
Rintaro Watanabe, Yu Kawano, Nobutaka Wada, Ming Cao   +3 more
wiley   +1 more source

Advanced protection technologies for microgrids: Evolution, challenges, and future trends

Energy Strategy Reviews
This paper delves into the evolution of microgrid protective devices, addressing the critical challenge of ensuring a robust protection system for modern grids.
Priya Ranjan Satpathy, Vigna K. Ramachandaramurthy, Sanjeevikumar Padmanaban   +2 more
doaj   +1 more source

Bidirectional Power Flow Control in AC/DC Hybrid System under AC and DC Fault Conditions

JAREE (Journal on Advanced Research in Electrical Engineering), 2019
This paper presents a hybrid AC-DC microgrid to reduce the process of multiple conversions in an individual AC microgrid or DC microgrid. The proposed hybrid microgrid compose of both AC microgrid and DC microgrid connected together by bidirectional ...
Wai Wai Hnin
doaj   +1 more source

A Protection Method for Inverter-based Microgrid Using Current-only Polarity Comparison

Journal of Modern Power Systems and Clean Energy, 2020
The design of an effective protection system for inverter-based microgrids is a complicated engineering challenge. This is due to the fact that inverters have limited fault current capabilities, and that the conventional overcurrent protection is not ...
Bin Wang, Liuming Jing
doaj   +1 more source

Investigating the performance of non‐standard characteristics‐based overcurrent relays and their optimum coordination in distributed generators connected networks

IET Generation, Transmission & Distribution, 2023
To handle the challenges attributed to the distributed generators, the protection system of distribution networks needs to be evolved. Recent protection schemes modify the standard characteristics of overcurrent relays, called non‐standard ...
Tejas M. Vala, Vipul N. Rajput, Ameena Saad Al‐Sumaiti   +2 more
doaj   +1 more source

Probing the Energy Trilemma Pillars: Do Innovation Pathways Deliver Cleaner and More Equitable Energy Systems?

Sustainable Development, EarlyView.
ABSTRACT Balancing reliable energy supply, equitable access, and environmental sustainability is a central challenge of the global energy transition. This study examines how innovation influences the energy trilemma by shaping energy security, energy equity, and environmental sustainability across 115 countries from 2011 to 2023.
Kingsley Imandojemu, Omozele Lynda Showunmi, Felix Orole, Damilola Felix Eluyela, Hammed Oluwaseyi Musibau, Romanus Osabohien   +5 more
wiley   +1 more source